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MITRE ATT&CK - Инструмент Cyclops Blink
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Cyclops Blink
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Cyclops Blink

Cyclops Blink is a modular malware that has been used in widespread campaigns by Sandworm Team since at least 2019 to target Small/Home Office (SOHO) network devices, including WatchGuard and Asus. Cyclops Blink is assessed to be a replacement for VPNFilter, a similar platform targeting network devices.(Citation: NCSC Cyclops Blink February 2022)(Citation: NCSC CISA Cyclops Blink Advisory February 2022)(Citation: Trend Micro Cyclops Blink March 2022)
ID: S0687
Type: MALWARE
Platforms: Windows
Version: 1.1
Created: 03 Mar 2022
Last Modified: 15 Aug 2024

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

Cyclops Blink can download files via HTTP and HTTPS.(Citation: NCSC Cyclops Blink February 2022)(Citation: Trend Micro Cyclops Blink March 2022)
Enterprise T1037 .004 Boot or Logon Initialization Scripts: RC Scripts

Cyclops Blink has the ability to execute on device startup, using a modified RC script named S51armled.(Citation: NCSC Cyclops Blink February 2022)
Enterprise T1132 .002 Data Encoding: Non-Standard Encoding

Cyclops Blink can use a custom binary scheme to encode messages with specific commands and parameters to be executed.(Citation: NCSC Cyclops Blink February 2022)
Enterprise T1573 .002 Encrypted Channel: Asymmetric Cryptography

Cyclops Blink can encrypt C2 messages with AES-256-CBC sent underneath TLS. OpenSSL library functions are also used to encrypt each message using a randomly generated key and IV, which are then encrypted using a hard-coded RSA public key.(Citation: NCSC Cyclops Blink February 2022)
Enterprise T1562 .004 Impair Defenses: Disable or Modify System Firewall

Cyclops Blink can modify the Linux iptables firewall to enable C2 communication on network devices via a stored list of port numbers.(Citation: NCSC Cyclops Blink February 2022)(Citation: Trend Micro Cyclops Blink March 2022)
Enterprise T1070 .006 Indicator Removal: Timestomp

Cyclops Blink has the ability to use the Linux API function `utime` to change the timestamps of modified firmware update images.(Citation: NCSC Cyclops Blink February 2022)
Enterprise T1036 .005 Masquerading: Match Legitimate Name or Location

Cyclops Blink can rename its running process to [kworker:0/1] to masquerade as a Linux kernel thread. Cyclops Blink has also named RC scripts used for persistence after WatchGuard artifacts.(Citation: NCSC Cyclops Blink February 2022)
Enterprise T1542 .002 Pre-OS Boot: Component Firmware

Cyclops Blink has maintained persistence by patching legitimate device firmware when it is downloaded, including that of WatchGuard devices.(Citation: NCSC Cyclops Blink February 2022)
Enterprise T1090 .003 Proxy: Multi-hop Proxy

Cyclops Blink has used Tor nodes for C2 traffic.(Citation: NCSC CISA Cyclops Blink Advisory February 2022)

Groups That Use This Software
ID Name References
G0034 Sandworm Team

(Citation: NCSC CISA Cyclops Blink Advisory February 2022) (Citation: Trend Micro Cyclops Blink March 2022)

References

  1. Haquebord, F. et al. (2022, March 17). Cyclops Blink Sets Sights on Asus Routers. Retrieved March 17, 2022.
  2. NCSC, CISA, FBI, NSA. (2022, February 23). New Sandworm malware Cyclops Blink replaces VPNFilter. Retrieved March 3, 2022.
  3. NCSC. (2022, February 23). Cyclops Blink Malware Analysis Report. Retrieved March 3, 2022.
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