Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2024 21:31

General

  • Target

    974cac47e7b631754c9184e8bc84905f_JaffaCakes118.exe

  • Size

    322KB

  • MD5

    974cac47e7b631754c9184e8bc84905f

  • SHA1

    da80a570cf19a35babb40226d1e3907251f6b286

  • SHA256

    e03354e8c2cb5ae108a2806ecffe8758eb91830884b810c16e7f743e53ce238d

  • SHA512

    5fe9df9504c0c4bc413b8372c33c11886a54a767cc2c1cb49cbacb38492782bab83e6b3aacda311b207ab7ad851e43f379c8b8898a32eccae9482f650849f88e

  • SSDEEP

    6144:51TFYFW3qr6mdDe377FTJEC1h0EaS8Md10cphn6E3grMJencJxoz6wGlLi:5U6qzRy77FlEC12Enj3Q3cW6/l

Malware Config

Extracted

Family

darkcomet

Botnet

Normal

C2

carbonfibers.myftp.biz:1656

carbonfibers.linkpc.net:1656

Mutex

DC_MUTEX-5GX4X3J

Attributes
  • InstallPath

    System Services\svchost.exe

  • gencode

    ocw5E1nj2p5Z

  • install

    true

  • offline_keylogger

    true

  • password

    92496

  • persistence

    true

  • reg_key

    System Services Host

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 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.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 20 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\974cac47e7b631754c9184e8bc84905f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\974cac47e7b631754c9184e8bc84905f_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3736
    • C:\Users\Admin\AppData\Local\Temp\974cac47e7b631754c9184e8bc84905f_JaffaCakes118.exe
      974cac47e7b631754c9184e8bc84905f_JaffaCakes118
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2840
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\974cac47e7b631754c9184e8bc84905f_JaffaCakes118.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:396
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\974cac47e7b631754c9184e8bc84905f_JaffaCakes118.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:3288
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2612
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:468
      • C:\Users\Admin\AppData\Roaming\System Services\svchost.exe
        "C:\Users\Admin\AppData\Roaming\System Services\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1248
        • C:\Users\Admin\AppData\Roaming\System Services\svchost.exe
          svchost
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4700
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:5076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\System Services\svchost.exe

    Filesize

    322KB

    MD5

    974cac47e7b631754c9184e8bc84905f

    SHA1

    da80a570cf19a35babb40226d1e3907251f6b286

    SHA256

    e03354e8c2cb5ae108a2806ecffe8758eb91830884b810c16e7f743e53ce238d

    SHA512

    5fe9df9504c0c4bc413b8372c33c11886a54a767cc2c1cb49cbacb38492782bab83e6b3aacda311b207ab7ad851e43f379c8b8898a32eccae9482f650849f88e

  • memory/2840-3-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-6-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-7-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-8-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-9-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-11-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/2840-45-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/3736-0-0x0000000074632000-0x0000000074633000-memory.dmp

    Filesize

    4KB

  • memory/3736-1-0x0000000074630000-0x0000000074BE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3736-2-0x0000000074630000-0x0000000074BE1000-memory.dmp

    Filesize

    5.7MB

  • memory/3736-10-0x0000000074630000-0x0000000074BE1000-memory.dmp

    Filesize

    5.7MB

  • memory/4700-50-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-63-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-53-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-52-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-69-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-56-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-55-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-57-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-59-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-61-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-51-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-65-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/4700-67-0x0000000000400000-0x00000000004BA000-memory.dmp

    Filesize

    744KB

  • memory/5076-54-0x00000000012D0000-0x00000000012D1000-memory.dmp

    Filesize

    4KB