Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-06-2024 13:50

General

  • Target

    163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe

  • Size

    332KB

  • MD5

    163b14745b63876196be7dd7e91c1be2

  • SHA1

    c7c6940cf4f05ad67b5cb141d98c7c208b2e6885

  • SHA256

    083e6e89198bd3088d2798d4e22e72e577666cbc16884e464766504c70ef4276

  • SHA512

    795cfb77ef725c34aa62757cf6c321cf671c10825d832325c687b96bebbd9ccaf4db90df917d58d0a0d4ab50985dce174dee47836ea62eb916312bce2cfc9da6

  • SSDEEP

    6144:sYLtU7Ixhnhz5qLZWBRyve1+HxhV+baign+kuERMEnBa:7sI3lQK71870baign+kRXnI

Malware Config

Extracted

Family

darkcomet

Botnet

One-Dz

C2

fucksuck.myftp.org:100

Mutex

DC_MUTEX-BV4T666

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    isDoctiQ3i8k

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

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
  • 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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3644
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:964
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\163b14745b63876196be7dd7e91c1be2_JaffaCakes118.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:3476
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:712
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:1136
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      PID:1052
    • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
      "C:\Windows\system32\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • 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:3672
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
          PID:2080
        • C:\Windows\explorer.exe
          "C:\Windows\explorer.exe"
          3⤵
            PID:3928
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            3⤵
              PID:3584

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

          Filesize

          332KB

          MD5

          163b14745b63876196be7dd7e91c1be2

          SHA1

          c7c6940cf4f05ad67b5cb141d98c7c208b2e6885

          SHA256

          083e6e89198bd3088d2798d4e22e72e577666cbc16884e464766504c70ef4276

          SHA512

          795cfb77ef725c34aa62757cf6c321cf671c10825d832325c687b96bebbd9ccaf4db90df917d58d0a0d4ab50985dce174dee47836ea62eb916312bce2cfc9da6

        • memory/1052-5-0x00000000006D0000-0x00000000006D1000-memory.dmp

          Filesize

          4KB

        • memory/3584-64-0x00000000009F0000-0x00000000009F1000-memory.dmp

          Filesize

          4KB

        • memory/3644-0-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3644-1-0x00000000007C0000-0x00000000007C1000-memory.dmp

          Filesize

          4KB

        • memory/3644-66-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-72-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-75-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-70-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-71-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-68-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-73-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-74-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-69-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-76-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-77-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-78-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-79-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-80-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB

        • memory/3672-81-0x0000000000400000-0x00000000004E6000-memory.dmp

          Filesize

          920KB