Screen Capture
Adversaries may attempt to take screen captures of the desktop to gather information over the course of an operation. Screen capturing functionality may be included as a feature of a remote access tool used in post-compromise operations. Taking a screenshot is also typically possible through native utilities or API calls, such as CopyFromScreen, xwd, or screencapture.(Citation: CopyFromScreen .NET)(Citation: Antiquated Mac Malware)
Procedure Examples |
|
| Name | Description |
|---|---|
| Pteranodon |
Pteranodon can capture screenshots at a configurable interval.(Citation: Palo Alto Gamaredon Feb 2017)(Citation: Unit 42 Gamaredon February 2022) |
| GRIFFON |
GRIFFON has used a screenshot module that can be used to take a screenshot of the remote system.(Citation: SecureList Griffon May 2019) |
| JHUHUGIT |
A JHUHUGIT variant takes screenshots by simulating the user pressing the "Take Screenshot" key (VK_SCREENSHOT), accessing the screenshot saved in the clipboard, and converting it to a JPG image.(Citation: Unit 42 Playbook Dec 2017)(Citation: Talos Seduploader Oct 2017) |
| Agent Tesla |
Agent Tesla can capture screenshots of the victim’s desktop.(Citation: Talos Agent Tesla Oct 2018)(Citation: DigiTrust Agent Tesla Jan 2017)(Citation: Fortinet Agent Tesla April 2018)(Citation: Fortinet Agent Tesla June 2017)(Citation: Bitdefender Agent Tesla April 2020) |
| Dragonfly |
Dragonfly has performed screen captures of victims, including by using a tool, scr.exe (which matched the hash of ScreenUtil).(Citation: US-CERT TA18-074A)(Citation: Symantec Dragonfly Sept 2017)(Citation: Gigamon Berserk Bear October 2021) |
| Pupy |
Pupy can drop a mouse-logger that will take small screenshots around at each click and then send back to the server.(Citation: GitHub Pupy) |
| TURNEDUP |
TURNEDUP is capable of taking screenshots.(Citation: FireEye APT33 Sept 2017) |
| Trojan.Karagany |
Trojan.Karagany can take a desktop screenshot and save the file into |
| FinFisher |
FinFisher takes a screenshot of the screen and displays it on top of all other windows for few seconds in an apparent attempt to hide some messages showed by the system during the setup process.(Citation: FinFisher Citation)(Citation: Microsoft FinFisher March 2018) |
| Cobian RAT |
Cobian RAT has a feature to perform screen capture.(Citation: Zscaler Cobian Aug 2017) |
| BADNEWS |
BADNEWS has a command to take a screenshot and send it to the C2 server.(Citation: Forcepoint Monsoon)(Citation: PaloAlto Patchwork Mar 2018) |
| Ramsay |
Ramsay can take screenshots every 30 seconds as well as when an external removable storage device is connected.(Citation: Antiy CERT Ramsay April 2020) |
| BlackEnergy |
BlackEnergy is capable of taking screenshots.(Citation: Securelist BlackEnergy Nov 2014) |
| Carbanak |
Carbanak performs desktop video recording and captures screenshots of the desktop and sends it to the C2 server.(Citation: FireEye CARBANAK June 2017) |
| ObliqueRAT |
ObliqueRAT can capture a screenshot of the current screen.(Citation: Talos Oblique RAT March 2021) |
| Clambling |
Clambling has the ability to capture screenshots.(Citation: Trend Micro DRBControl February 2020) |
| PcShare |
PcShare can take screen shots of a compromised machine.(Citation: Bitdefender FunnyDream Campaign November 2020) |
| Empire |
Empire is capable of capturing screenshots on Windows and macOS systems.(Citation: Github PowerShell Empire) |
| Mispadu |
Mispadu has the ability to capture screenshots on compromised hosts.(Citation: SCILabs Malteiro 2021)(Citation: SCILabs URSA/Mispadu Evolution 2023)(Citation: ESET Security Mispadu Facebook Ads 2019)(Citation: Metabase Q Mispadu Trojan 2023) |
| CrossRAT |
CrossRAT is capable of taking screen captures.(Citation: Lookout Dark Caracal Jan 2018) |
| Prikormka |
Prikormka contains a module that captures screenshots of the victim's desktop.(Citation: ESET Operation Groundbait) |
| BRONZE BUTLER |
BRONZE BUTLER has used a tool to capture screenshots.(Citation: Secureworks BRONZE BUTLER Oct 2017)(Citation: Trend Micro Tick November 2019) |
| BISCUIT |
BISCUIT has a command to periodically take screenshots of the system.(Citation: Mandiant APT1 Appendix) |
| MacMa |
MacMa has used Apple’s Core Graphic APIs, such as `CGWindowListCreateImageFromArray`, to capture the user's screen and open windows.(Citation: ESET DazzleSpy Jan 2022)(Citation: Objective-See MacMa Nov 2021) |
| BADHATCH |
BADHATCH can take screenshots and send them to an actor-controlled C2 server.(Citation: BitDefender BADHATCH Mar 2021) |
| njRAT |
njRAT can capture screenshots of the victim’s machines.(Citation: Trend Micro njRAT 2018) |
| Turian |
Turian has the ability to take screenshots.(Citation: ESET BackdoorDiplomacy Jun 2021) |
| Gamaredon Group |
Gamaredon Group's malware can take screenshots of the compromised computer every minute.(Citation: ESET Gamaredon June 2020) |
| Cannon |
Cannon can take a screenshot of the desktop.(Citation: Unit42 Cannon Nov 2018) |
| Zebrocy |
A variant of Zebrocy captures screenshots of the victim’s machine in JPEG and BMP format.(Citation: Unit42 Cannon Nov 2018)(Citation: ESET Zebrocy Nov 2018)(Citation: Unit42 Sofacy Dec 2018)(Citation: ESET Zebrocy May 2019)(Citation: Accenture SNAKEMACKEREL Nov 2018)(Citation: CISA Zebrocy Oct 2020) |
| TajMahal |
TajMahal has the ability to take screenshots on an infected host including capturing content from windows of instant messaging applications.(Citation: Kaspersky TajMahal April 2019) |
| Cobalt Strike |
Cobalt Strike's Beacon payload is capable of capturing screenshots.(Citation: cobaltstrike manual)(Citation: Amnesty Intl. Ocean Lotus February 2021)(Citation: Cobalt Strike Manual 4.3 November 2020) |
| SharpStage |
SharpStage has the ability to capture the victim's screen.(Citation: Cybereason Molerats Dec 2020)(Citation: BleepingComputer Molerats Dec 2020) |
| InvisiMole |
InvisiMole can capture screenshots of not only the entire screen, but of each separate window open, in case they are overlapping.(Citation: ESET InvisiMole June 2018)(Citation: ESET InvisiMole June 2020) |
| OilRig |
OilRig has a tool called CANDYKING to capture a screenshot of user's desktop.(Citation: FireEye APT34 Webinar Dec 2017) |
| APT28 |
APT28 has used tools to take screenshots from victims.(Citation: ESET Sednit Part 2)(Citation: XAgentOSX 2017)(Citation: DOJ GRU Indictment Jul 2018)(Citation: Secureworks IRON TWILIGHT Active Measures March 2017) |
| RedLeaves |
RedLeaves can capture screenshots.(Citation: FireEye APT10 April 2017)(Citation: Accenture Hogfish April 2018) |
| SILENTTRINITY |
SILENTTRINITY can take a screenshot of the current desktop.(Citation: GitHub SILENTTRINITY Modules July 2019) |
| RDAT |
RDAT can take a screenshot on the infected system.(Citation: Unit42 RDAT July 2020) |
| Zeus Panda |
Zeus Panda can take screenshots of the victim’s machine.(Citation: GDATA Zeus Panda June 2017) |
| ZxShell |
ZxShell can capture screenshots.(Citation: FireEye APT41 Aug 2019) |
| MoustachedBouncer |
MoustachedBouncer has used plugins to take screenshots on targeted systems.(Citation: MoustachedBouncer ESET August 2023) |
| POORAIM |
POORAIM can perform screen capturing.(Citation: FireEye APT37 Feb 2018) |
| RCSession |
RCSession can capture screenshots from a compromised host.(Citation: Profero APT27 December 2020) |
| UPPERCUT |
UPPERCUT can capture desktop screenshots in the PNG format and send them to the C2 server.(Citation: FireEye APT10 Sept 2018) |
| Brute Ratel C4 |
Brute Ratel C4 can take screenshots on compromised hosts.(Citation: Palo Alto Brute Ratel July 2022) |
| GOLD SOUTHFIELD |
GOLD SOUTHFIELD has used the remote monitoring and management tool ConnectWise to obtain screen captures from victim's machines.(Citation: Tetra Defense Sodinokibi March 2020) |
| LitePower |
LitePower can take system screenshots and save them to `%AppData%`.(Citation: Kaspersky WIRTE November 2021) |
| BadPatch |
BadPatch captures screenshots in .jpg format and then exfiltrates them.(Citation: Unit 42 BadPatch Oct 2017) |
| Aria-body |
Aria-body has the ability to capture screenshots on compromised hosts.(Citation: CheckPoint Naikon May 2020) |
| Cuckoo Stealer |
Cuckoo Stealer can run `screencapture` to collect screenshots from compromised hosts. (Citation: Kandji Cuckoo April 2024) |
| Valak |
Valak has the ability to take screenshots on a compromised host.(Citation: Cybereason Valak May 2020) |
| DUSTTRAP |
DUSTTRAP can capture screenshots.(Citation: Google Cloud APT41 2024) |
| Rover |
Rover takes screenshots of the compromised system's desktop and saves them to |
| Lizar |
Lizar can take JPEG screenshots of an infected system.(Citation: Threatpost Lizar May 2021)(Citation: BiZone Lizar May 2021) |
| Magic Hound |
Magic Hound malware can take a screenshot and upload the file to its C2 server.(Citation: Unit 42 Magic Hound Feb 2017) |
| Peppy |
Peppy can take screenshots on targeted systems.(Citation: Proofpoint Operation Transparent Tribe March 2016) |
| Daserf |
Daserf can take screenshots.(Citation: Trend Micro Daserf Nov 2017)(Citation: Secureworks BRONZE BUTLER Oct 2017) |
| TinyZBot |
TinyZBot contains screen capture functionality.(Citation: Cylance Cleaver) |
| MuddyWater |
MuddyWater has used malware that can capture screenshots of the victim’s machine.(Citation: Securelist MuddyWater Oct 2018) |
| Crimson |
Crimson contains a command to perform screen captures.(Citation: Proofpoint Operation Transparent Tribe March 2016)(Citation: Kaspersky Transparent Tribe August 2020)(Citation: Cisco Talos Transparent Tribe Education Campaign July 2022) |
| Winter Vivern |
Winter Vivern delivered PowerShell scripts capable of taking screenshots of victim machines.(Citation: CERT-UA WinterVivern 2023) |
| CHOPSTICK |
CHOPSTICK has the capability to capture screenshots.(Citation: DOJ GRU Indictment Jul 2018) |
| ZLib |
ZLib has the ability to obtain screenshots of the compromised system.(Citation: Cylance Dust Storm) |
| CosmicDuke |
CosmicDuke takes periodic screenshots and exfiltrates them.(Citation: F-Secure Cosmicduke) |
| Attor |
Attor's has a plugin that captures screenshots of the target applications.(Citation: ESET Attor Oct 2019) |
| Silence |
Silence can capture victim screen activity.(Citation: SecureList Silence Nov 2017)(Citation: Group IB Silence Sept 2018) |
| metaMain |
metaMain can take and save screenshots.(Citation: SentinelLabs Metador Sept 2022)(Citation: SentinelLabs Metador Technical Appendix Sept 2022) |
| Volt Typhoon |
Volt Typhoon has obtained a screenshot of the victim's system using the gdi32.dll and gdiplus.dll libraries.(Citation: CISA AA24-038A PRC Critical Infrastructure February 2024) |
| SVCReady |
SVCReady can take a screenshot from an infected host.(Citation: HP SVCReady Jun 2022) |
| PowerSploit |
PowerSploit's |
| Flame |
Flame can take regular screenshots when certain applications are open that are sent to the command and control server.(Citation: Kaspersky Flame) |
| StrifeWater |
StrifeWater has the ability to take screen captures.(Citation: Cybereason StrifeWater Feb 2022) |
| VERMIN |
VERMIN can perform screen captures of the victim’s machine.(Citation: Unit 42 VERMIN Jan 2018) |
| Manjusaka |
Manjusaka can take screenshots of the victim desktop.(Citation: Talos Manjusaka 2022) |
| Ursnif |
Ursnif has used hooked APIs to take screenshots.(Citation: TrendMicro Ursnif Mar 2015)(Citation: TrendMicro BKDR_URSNIF.SM) |
| Cobalt Strike |
Cobalt Strike's "beacon" payload is capable of capturing screenshots.(Citation: cobaltstrike manual) |
| Woody RAT |
Woody RAT has the ability to take a screenshot of the infected host desktop using Windows GDI+.(Citation: MalwareBytes WoodyRAT Aug 2022) |
| LookBack |
LookBack can take desktop screenshots.(Citation: Proofpoint LookBack Malware Aug 2019) |
| ECCENTRICBANDWAGON |
ECCENTRICBANDWAGON can capture screenshots and store them locally.(Citation: CISA EB Aug 2020) |
| Mafalda |
Mafalda can take a screenshot of the target machine and save it to a file.(Citation: SentinelLabs Metador Sept 2022) |
| Kivars |
Kivars has the ability to capture screenshots on the infected host.(Citation: TrendMicro BlackTech June 2017) |
| Sliver |
Sliver can take screenshots of the victim’s active display.(Citation: GitHub Sliver Screen) |
| DOGCALL |
DOGCALL is capable of capturing screenshots of the victim's machine.(Citation: FireEye APT37 Feb 2018)(Citation: Unit 42 Nokki Oct 2018) |
| Group5 |
Malware used by Group5 is capable of watching the victim's screen.(Citation: Citizen Lab Group5) |
| SysUpdate |
SysUpdate has the ability to capture screenshots.(Citation: Trend Micro Iron Tiger April 2021) |
| HyperBro |
HyperBro has the ability to take screenshots.(Citation: Unit42 Emissary Panda May 2019) |
| FunnyDream |
The FunnyDream ScreenCap component can take screenshots on a compromised host.(Citation: Bitdefender FunnyDream Campaign November 2020) |
| APT39 |
APT39 has used a screen capture utility to take screenshots on a compromised host.(Citation: Symantec Chafer February 2018)(Citation: FBI FLASH APT39 September 2020) |
| Chrommme |
Chrommme has the ability to capture screenshots.(Citation: ESET Gelsemium June 2021) |
| FruitFly |
FruitFly takes screenshots of the user's desktop.(Citation: objsee mac malware 2017) |
| Remcos |
Remcos takes automated screenshots of the infected machine.(Citation: Riskiq Remcos Jan 2018) |
| NightClub |
NightClub can load a module to call `CreateCompatibleDC` and `GdipSaveImageToStream` for screen capture.(Citation: MoustachedBouncer ESET August 2023) |
| FlawedAmmyy |
FlawedAmmyy can capture screenshots.(Citation: Korean FSI TA505 2020) |
| Matryoshka |
Matryoshka is capable of performing screen captures.(Citation: ClearSky Wilted Tulip July 2017)(Citation: CopyKittens Nov 2015) |
| Raccoon Stealer |
Raccoon Stealer can capture screenshots from victim systems.(Citation: S2W Racoon 2022)(Citation: Sekoia Raccoon2 2022) |
| DustySky |
DustySky captures PNG screenshots of the main screen.(Citation: Kaspersky MoleRATs April 2019) |
| Bandook |
Bandook is capable of taking an image of and uploading the current desktop.(Citation: Lookout Dark Caracal Jan 2018)(Citation: CheckPoint Bandook Nov 2020) |
| Hydraq |
Hydraq includes a component based on the code of VNC that can stream a live feed of the desktop of an infected host.(Citation: Symantec Hydraq Jan 2010) |
| RainyDay |
RainyDay has the ability to capture screenshots.(Citation: Bitdefender Naikon April 2021) |
| Kasidet |
Kasidet has the ability to initiate keylogging and screen captures.(Citation: Zscaler Kasidet) |
| KONNI |
KONNI can take screenshots of the victim’s machine.(Citation: Talos Konni May 2017) |
| gh0st RAT |
gh0st RAT can capture the victim’s screen remotely.(Citation: Nccgroup Gh0st April 2018) |
| Kazuar |
Kazuar captures screenshots of the victim’s screen.(Citation: Unit 42 Kazuar May 2017) |
| EvilGrab |
EvilGrab has the capability to capture screenshots.(Citation: PWC Cloud Hopper Technical Annex April 2017) |
| HALFBAKED |
HALFBAKED can obtain screenshots from the victim.(Citation: FireEye FIN7 April 2017) |
| Metamorfo |
Metamorfo can collect screenshots of the victim’s machine.(Citation: FireEye Metamorfo Apr 2018)(Citation: ESET Casbaneiro Oct 2019) |
| yty |
yty collects screenshots of the victim machine.(Citation: ASERT Donot March 2018) |
| Micropsia |
Micropsia takes screenshots every 90 seconds by calling the Gdi32.BitBlt API.(Citation: Radware Micropsia July 2018) |
| SMOKEDHAM |
SMOKEDHAM can capture screenshots of the victim’s desktop.(Citation: FireEye Shining A Light on DARKSIDE May 2021)(Citation: FireEye SMOKEDHAM June 2021) |
| PlugX |
PlugX allows the operator to capture screenshots.(Citation: CIRCL PlugX March 2013) |
| KeyBoy |
KeyBoy has a command to perform screen grabbing.(Citation: PWC KeyBoys Feb 2017) |
| Socksbot |
Socksbot can take screenshots.(Citation: TrendMicro Patchwork Dec 2017) |
| XAgentOSX |
XAgentOSX contains the takeScreenShot (along with startTakeScreenShot and stopTakeScreenShot) functions to take screenshots using the CGGetActiveDisplayList, CGDisplayCreateImage, and NSImage:initWithCGImage methods.(Citation: XAgentOSX 2017) |
| KEYMARBLE |
KEYMARBLE can capture screenshots of the victim’s machine.(Citation: US-CERT KEYMARBLE Aug 2018) |
| ConnectWise |
ConnectWise can take screenshots on remote hosts.(Citation: Anomali Static Kitten February 2021) |
| LunarMail |
LunarMail can capture screenshots from compromised hosts.(Citation: ESET Turla Lunar toolset May 2024) |
| ROKRAT |
ROKRAT can capture screenshots of the infected system using the `gdi32` library.(Citation: Talos ROKRAT)(Citation: Talos ROKRAT 2)(Citation: Securelist ScarCruft May 2019)(Citation: NCCGroup RokRat Nov 2018)(Citation: Malwarebytes RokRAT VBA January 2021) |
| Revenge RAT |
Revenge RAT has a plugin for screen capture.(Citation: Cylance Shaheen Nov 2018) |
| Derusbi |
Derusbi is capable of performing screen captures.(Citation: FireEye Periscope March 2018) |
| NETWIRE |
NETWIRE can capture the victim's screen.(Citation: McAfee Netwire Mar 2015)(Citation: FireEye NETWIRE March 2019)(Citation: Red Canary NETWIRE January 2020)(Citation: Proofpoint NETWIRE December 2020) |
| Proton |
Proton captures the content of the desktop with the screencapture binary.(Citation: objsee mac malware 2017) |
| CHIMNEYSWEEP |
CHIMNEYSWEEP can capture screenshots on targeted systems using a timer and either upload them or store them to disk.(Citation: Mandiant ROADSWEEP August 2022) |
| AppleSeed |
AppleSeed can take screenshots on a compromised host by calling a series of APIs.(Citation: Malwarebytes Kimsuky June 2021)(Citation: KISA Operation Muzabi) |
| Dragonfly 2.0 |
Dragonfly 2.0 has performed screen captures of victims, including by using a tool, scr.exe (which matched the hash of ScreenUtil).(Citation: US-CERT TA18-074A)(Citation: Symantec Dragonfly Sept 2017) |
| Remexi |
Remexi takes screenshots of windows of interest.(Citation: Securelist Remexi Jan 2019) |
| SHUTTERSPEED |
SHUTTERSPEED can capture screenshots.(Citation: FireEye APT37 Feb 2018) |
| PoetRAT |
PoetRAT has the ability to take screen captures.(Citation: Talos PoetRAT April 2020)(Citation: Dragos Threat Report 2020) |
| Cadelspy |
Cadelspy has the ability to capture screenshots and webcam photos.(Citation: Symantec Chafer Dec 2015) |
| T9000 |
T9000 can take screenshots of the desktop and target application windows, saving them to user directories as one byte XOR encrypted .dat files.(Citation: Palo Alto T9000 Feb 2016) |
| CharmPower |
CharmPower has the ability to capture screenshots.(Citation: Check Point APT35 CharmPower January 2022) |
| Carberp |
Carberp can capture display screenshots with the screens_dll.dll plugin.(Citation: Prevx Carberp March 2011) |
| BLUELIGHT |
BLUELIGHT has captured a screenshot of the display every 30 seconds for the first 5 minutes after initiating a C2 loop, and then once every five minutes thereafter.(Citation: Volexity InkySquid BLUELIGHT August 2021) |
| MacSpy |
MacSpy can capture screenshots of the desktop over multiple monitors.(Citation: objsee mac malware 2017) |
| SLOTHFULMEDIA |
SLOTHFULMEDIA has taken a screenshot of a victim's desktop, named it "Filter3.jpg", and stored it in the local directory.(Citation: CISA MAR SLOTHFULMEDIA October 2020) |
| RogueRobin |
RogueRobin has a command named |
| Chaes |
Chaes can capture screenshots of the infected machine.(Citation: Cybereason Chaes Nov 2020) |
| POWERSTATS |
POWERSTATS can retrieve screenshots from compromised hosts.(Citation: FireEye MuddyWater Mar 2018)(Citation: TrendMicro POWERSTATS V3 June 2019) |
| jRAT |
jRAT has the capability to take screenshots of the victim’s machine.(Citation: jRAT Symantec Aug 2018)(Citation: Kaspersky Adwind Feb 2016) |
| RemoteUtilities |
RemoteUtilities can take screenshots on a compromised host.(Citation: Trend Micro Muddy Water March 2021) |
| Dark Caracal |
Dark Caracal took screenshots using their Windows malware.(Citation: Lookout Dark Caracal Jan 2018) |
| POWRUNER |
POWRUNER can capture a screenshot from a victim.(Citation: FireEye APT34 Dec 2017) |
| AsyncRAT |
AsyncRAT has the ability to view the screen on compromised hosts.(Citation: AsyncRAT GitHub) |
| Azorult |
Azorult can capture screenshots of the victim’s machines.(Citation: Unit42 Azorult Nov 2018) |
| HotCroissant |
HotCroissant has the ability to do real time screen viewing on an infected host.(Citation: Carbon Black HotCroissant April 2020) |
| StoneDrill |
StoneDrill can take screenshots.(Citation: Kaspersky StoneDrill 2017) |
| Catchamas |
Catchamas captures screenshots based on specific keywords in the window’s title.(Citation: Symantec Catchamas April 2018) |
| NKAbuse |
NKAbuse can take screenshots of the victim machine.(Citation: NKAbuse SL) |
| FIN7 |
FIN7 captured screenshots and desktop video recordings.(Citation: DOJ FIN7 Aug 2018) |
| Cardinal RAT |
Cardinal RAT can capture screenshots.(Citation: PaloAlto CardinalRat Apr 2017) |
| XCSSET |
XCSSET saves a screen capture of the victim's system with a numbered filename and |
| Octopus |
Octopus can capture screenshots of the victims’ machine.(Citation: Securelist Octopus Oct 2018)(Citation: Security Affairs DustSquad Oct 2018)(Citation: ESET Nomadic Octopus 2018) |
| RTM |
RTM can capture screenshots.(Citation: ESET RTM Feb 2017)(Citation: Unit42 Redaman January 2019) |
| QuietSieve |
QuietSieve has taken screenshots every five minutes and saved them to the user's local Application Data folder under `Temp\SymbolSourceSymbols\icons` or `Temp\ModeAuto\icons`.(Citation: Microsoft Actinium February 2022) |
| Machete |
Machete captures screenshots.(Citation: ESET Machete July 2019)(Citation: Securelist Machete Aug 2014)(Citation: Cylance Machete Mar 2017)(Citation: 360 Machete Sep 2020) |
| Janicab |
Janicab captured screenshots and sent them out to a C2 server.(Citation: f-secure janicab)(Citation: Janicab) |
| MarkiRAT |
MarkiRAT can capture screenshots that are initially saved as ‘scr.jpg’.(Citation: Kaspersky Ferocious Kitten Jun 2021) |
Mitigations |
|
| Mitigation | Description |
|---|---|
| Screen Capture Mitigation |
Blocking software based on screen capture functionality may be difficult, and there may be legitimate software that performs those actions. Instead, identify potentially malicious software that may have functionality to acquire screen captures, and audit and/or block it by using whitelisting (Citation: Beechey 2010) tools, like AppLocker, (Citation: Windows Commands JPCERT) (Citation: NSA MS AppLocker) or Software Restriction Policies (Citation: Corio 2008) where appropriate. (Citation: TechNet Applocker vs SRP) |
Detection
Monitoring for screen capture behavior will depend on the method used to obtain data from the operating system and write output files. Detection methods could include collecting information from unusual processes using API calls used to obtain image data, and monitoring for image files written to disk. The sensor data may need to be correlated with other events to identify malicious activity, depending on the legitimacy of this behavior within a given network environment.
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