Cервис управления информационной безопасностью
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MITRE ATT&CK - Инструмент AppleSeed
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AppleSeed

AppleSeed is a backdoor that has been used by Kimsuky to target South Korean government, academic, and commercial targets since at least 2021.(Citation: Malwarebytes Kimsuky June 2021)
ID: S0622
Type: MALWARE
Platforms: Windows
Version: 1.1
Created: 10 Jun 2021
Last Modified: 15 Mar 2022

Techniques Used
Domain ID Name Use
Enterprise T1071 .001 Application Layer Protocol: Web Protocols

AppleSeed has the ability to communicate with C2 over HTTP.(Citation: Malwarebytes Kimsuky June 2021)(Citation: KISA Operation Muzabi)
Enterprise T1560 .001 Archive Collected Data: Archive via Utility

AppleSeed can zip and encrypt data collected on a target system.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1547 .001 Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

AppleSeed has the ability to create the Registry key name EstsoftAutoUpdate at HKCU\Software\Microsoft/Windows\CurrentVersion\RunOnce to establish persistence.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1059 .001 Command and Scripting Interpreter: PowerShell

AppleSeed has the ability to execute its payload via PowerShell.(Citation: Malwarebytes Kimsuky June 2021)
.007 Command and Scripting Interpreter: JavaScript

AppleSeed has the ability to use JavaScript to execute PowerShell.(Citation: Malwarebytes Kimsuky June 2021)

Enterprise T1074 .001 Data Staged: Local Data Staging

AppleSeed can stage files in a central location prior to exfiltration.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1070 .004 Indicator Removal: File Deletion

AppleSeed can delete files from a compromised host after they are exfiltrated.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1056 .001 Input Capture: Keylogging

AppleSeed can use GetKeyState and GetKeyboardState to capture keystrokes on the victim’s machine.(Citation: Malwarebytes Kimsuky June 2021)(Citation: KISA Operation Muzabi)
Enterprise T1036 .005 Masquerading: Match Legitimate Name or Location

AppleSeed has the ability to rename its payload to ESTCommon.dll to masquerade as a DLL belonging to ESTsecurity.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1027 .002 Obfuscated Files or Information: Software Packing

AppleSeed has used UPX packers for its payload DLL.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1566 .001 Phishing: Spearphishing Attachment

AppleSeed has been distributed to victims through malicious e-mail attachments.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1218 .010 System Binary Proxy Execution: Regsvr32

AppleSeed can call regsvr32.exe for execution.(Citation: Malwarebytes Kimsuky June 2021)
Enterprise T1204 .002 User Execution: Malicious File

AppleSeed can achieve execution through users running malicious file attachments distributed via email.(Citation: Malwarebytes Kimsuky June 2021)

Groups That Use This Software
ID Name References
G0094 Kimsuky

(Citation: Malwarebytes Kimsuky June 2021) (Citation: KISA Operation Muzabi)

References

  1. Jazi, H. (2021, June 1). Kimsuky APT continues to target South Korean government using AppleSeed backdoor. Retrieved June 10, 2021.
  2. KISA. (2021). Phishing Target Reconnaissance and Attack Resource Analysis Operation Muzabi. Retrieved March 8, 2024.
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