Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2024 04:34

General

  • Target

    b4cce273471670645904d27d781edbc7_JaffaCakes118.exe

  • Size

    935KB

  • MD5

    b4cce273471670645904d27d781edbc7

  • SHA1

    7a569c50fc13f4833fad070d9c47a6b8417fceea

  • SHA256

    de2cb68fa4b68d9d472ed823ac7124e5c9d0a8232a7407ac710547a26af38599

  • SHA512

    1e104a8218b352de7d2f0d787c8e53fccb683d6a7fc9118a2c10136463c83bd86ecce97b21d557d48868918a0bd1fb8bc749cd6691c869fc806548a1926a9774

  • SSDEEP

    24576:ZCNZK65lu9ye0NwPR93/ynv54TeeC4MC0:w265l+y8f36nvSF

Malware Config

Extracted

Family

darkcomet

Botnet

möpn

C2

194.166.90.128:1604

Mutex

DC_MUTEX-WAZ1JK5

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    82L5220nX277

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Darkcomet family
  • 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 3 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 2 IoCs
  • Themida packer 13 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4cce273471670645904d27d781edbc7_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b4cce273471670645904d27d781edbc7_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\b4cce273471670645904d27d781edbc7_JaffaCakes118.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\b4cce273471670645904d27d781edbc7_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2908
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2772
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2656
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2868
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Identifies Wine through registry keys
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2648
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Identifies Wine through registry keys
        • Adds Run key to start application
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1420
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1896

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    935KB

    MD5

    b4cce273471670645904d27d781edbc7

    SHA1

    7a569c50fc13f4833fad070d9c47a6b8417fceea

    SHA256

    de2cb68fa4b68d9d472ed823ac7124e5c9d0a8232a7407ac710547a26af38599

    SHA512

    1e104a8218b352de7d2f0d787c8e53fccb683d6a7fc9118a2c10136463c83bd86ecce97b21d557d48868918a0bd1fb8bc749cd6691c869fc806548a1926a9774

  • memory/1420-40-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/1896-81-0x00000000001C0000-0x00000000001C1000-memory.dmp

    Filesize

    4KB

  • memory/2532-38-0x0000000007D60000-0x0000000007F73000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-2-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-7-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-8-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-83-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-1-0x0000000000401000-0x000000000044F000-memory.dmp

    Filesize

    312KB

  • memory/2532-26-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-3-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-35-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-0-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-4-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2532-36-0x0000000007D60000-0x0000000007F73000-memory.dmp

    Filesize

    2.1MB

  • memory/2648-37-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2648-42-0x0000000000400000-0x0000000000613000-memory.dmp

    Filesize

    2.1MB

  • memory/2868-10-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2868-25-0x0000000000190000-0x0000000000191000-memory.dmp

    Filesize

    4KB