Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    20-06-2024 15:18

General

  • Target

    07333f628bd2373ed0dc2caa31650538_JaffaCakes118.exe

  • Size

    660KB

  • MD5

    07333f628bd2373ed0dc2caa31650538

  • SHA1

    53f8c21d51ad6c951fa4d2ed1fdac50fdfb2589d

  • SHA256

    0c8bcb0016f30222a02051d413d8663eaf7298e8c7b0abbb1852a029a67357c9

  • SHA512

    61d7cbe500db356c85ebaf6e3914bdd0836755e051a9449e4369b9f0e5a18f117e8be4d3498806ef99133684a3b9db7586f22ffe213e2be64b8f6d915b4ec098

  • SSDEEP

    12288:x9AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKXM:HAQ6Zx9cxTmOrucTIEFSpOGV

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\07333f628bd2373ed0dc2caa31650538_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\07333f628bd2373ed0dc2caa31650538_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of SetThreadContext
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Adds Run key to start application
      • Drops file in System32 directory
      PID:2416
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\SysWOW64\explorer.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Checks BIOS information in registry
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2676
      • C:\Windows\SysWOW64\notepad.exe
        C:\Windows\SysWOW64\notepad.exe
        3⤵
          PID:2536
      • C:\Windows\SysWOW64\notepad.exe
        C:\Windows\SysWOW64\notepad.exe
        2⤵
        • Deletes itself
        PID:2836

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Privilege Escalation

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Create or Modify System Process

    2
    T1543

    Windows Service

    2
    T1543.003

    Defense Evasion

    Modify Registry

    5
    T1112

    Impair Defenses

    2
    T1562

    Disable or Modify Tools

    1
    T1562.001

    Disable or Modify System Firewall

    1
    T1562.004

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\Windupdt\winupdate.exe
      MD5

      d41d8cd98f00b204e9800998ecf8427e

      SHA1

      da39a3ee5e6b4b0d3255bfef95601890afd80709

      SHA256

      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

      SHA512

      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

    • C:\Windows\SysWOW64\Windupdt\winupdate.exe
      Filesize

      660KB

      MD5

      07333f628bd2373ed0dc2caa31650538

      SHA1

      53f8c21d51ad6c951fa4d2ed1fdac50fdfb2589d

      SHA256

      0c8bcb0016f30222a02051d413d8663eaf7298e8c7b0abbb1852a029a67357c9

      SHA512

      61d7cbe500db356c85ebaf6e3914bdd0836755e051a9449e4369b9f0e5a18f117e8be4d3498806ef99133684a3b9db7586f22ffe213e2be64b8f6d915b4ec098

    • memory/2348-56-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2348-0-0x0000000000290000-0x0000000000291000-memory.dmp
      Filesize

      4KB

    • memory/2416-29-0x0000000000400000-0x0000000000401000-memory.dmp
      Filesize

      4KB

    • memory/2416-2-0x00000000000C0000-0x00000000000C1000-memory.dmp
      Filesize

      4KB

    • memory/2676-38-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2676-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2676-34-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2676-59-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2676-58-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2676-60-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2676-61-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2676-104-0x0000000013140000-0x00000000131F7000-memory.dmp
      Filesize

      732KB

    • memory/2836-55-0x0000000000020000-0x0000000000021000-memory.dmp
      Filesize

      4KB