Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-06-2024 13:55

General

  • Target

    1a6031959d62cc35e0c9d95a8eadfa38_JaffaCakes118.exe

  • Size

    1.3MB

  • MD5

    1a6031959d62cc35e0c9d95a8eadfa38

  • SHA1

    4d43f9240f1b5ecc103a71b67c094fe7fc4a3944

  • SHA256

    420aac924ab38220b5cab5fe6eb895a82efae97eab224b79881677c1bdf9dae0

  • SHA512

    23569a850a163b8d7b0b6b650491f0c065e7484d43c47c66e5b22caa0753b25f5e91ccc506a2c8219bf7ab6c253b9261d491c040bbb98e53198ac5a326f7e8f3

  • SSDEEP

    24576:FsnygoKvHFEd1C0CLO/mavED5e8Ni20VJ+LQxjSYcfjZTY:mygblogavMTNYVJ1IYcr2

Malware Config

Extracted

Family

darkcomet

Botnet

yahoo

C2

wootwootrs.no-ip.org:1604

Mutex

DC_MUTEX-N7S20QG

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    iUg418ipEAXJ

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    Windows Live Messenger

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 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs
  • System policy modification 1 TTPs 6 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a6031959d62cc35e0c9d95a8eadfa38_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1a6031959d62cc35e0c9d95a8eadfa38_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3856
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1440
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:4928
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2976
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:3044
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
          PID:4344
        • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
          "C:\Windows\system32\MSDCSC\msdcsc.exe"
          3⤵
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • Disables RegEdit via registry modification
          • Executes dropped EXE
          • Windows security modification
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:2992
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            4⤵
              PID:4932
        • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe
          C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe
          2⤵
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • Disables RegEdit via registry modification
          • Executes dropped EXE
          • Windows security modification
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:4924

      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

      7
      T1112

      Impair Defenses

      3
      T1562

      Disable or Modify Tools

      2
      T1562.001

      Disable or Modify System Firewall

      1
      T1562.004

      Hide Artifacts

      2
      T1564

      Hidden Files and Directories

      2
      T1564.001

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\img5221.exe
        Filesize

        921KB

        MD5

        8407d2c081cb10ac4c62950097e2a2b3

        SHA1

        9ad0c385b9bcdf1e346678d0d28a4304e4434fe2

        SHA256

        e00ecdf22fe850b0f115a20532169f2cfd280c94c2aba5f541bc202880bc369a

        SHA512

        a14555f3071968ac8ed2d57ae756e70f4860c6004fb3c8e62148b0411be610ef5feaeba5f6726ec4590ab078809eb95721aa37f3928657ee2f88dcbe3c21ef85

      • memory/2992-85-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-89-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-79-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-80-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-88-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-76-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-77-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-78-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-87-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-86-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-82-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-81-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-83-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/2992-84-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/3856-7-0x0000000002310000-0x0000000002311000-memory.dmp
        Filesize

        4KB

      • memory/3856-70-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/4344-10-0x00000000003B0000-0x00000000003B1000-memory.dmp
        Filesize

        4KB

      • memory/4924-72-0x0000000000400000-0x00000000004F3000-memory.dmp
        Filesize

        972KB

      • memory/4932-69-0x0000000001080000-0x0000000001081000-memory.dmp
        Filesize

        4KB