Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 12:11

General

  • Target

    f5bdb0bb069c87b7efff6e3b83890187_JaffaCakes118.exe

  • Size

    744KB

  • MD5

    f5bdb0bb069c87b7efff6e3b83890187

  • SHA1

    4d1ad24b615fdba85dde5279517e186484c8f712

  • SHA256

    ce52276672f31f36d89450798b7bf3a129f82290eb4c8d5dd756f10026953bc6

  • SHA512

    2d5086d499ef21fb3a4340e1f49f09b57d044fe73913fe6ac84f69626300ba87be6519dcfe1394aa3183aa962b18a32e8597cb5e1621716f72420422a580a30f

  • SSDEEP

    12288:xD4MsN/6Mhaty8mvwYsh09ZfNQBghCIEo4VNA05HxEpF1QPB5HlSR8FxfGw:mMsN/6MhaFmoJu9ZfHhHES0mFKlSGfB

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 2 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.

  • 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 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f5bdb0bb069c87b7efff6e3b83890187_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f5bdb0bb069c87b7efff6e3b83890187_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Users\Admin\AppData\Local\Temp\f5bdb0bb069c87b7efff6e3b83890187_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\f5bdb0bb069c87b7efff6e3b83890187_JaffaCakes118.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1364
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Adds Run key to start application
        PID:4540
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\SysWOW64\explorer.exe"
        3⤵
        • Drops file in System32 directory
        • Suspicious use of SetWindowsHookEx
        PID:1052
      • C:\Users\Admin\AppData\Roaming\Windupdt\mstsx.exe
        "C:\Users\Admin\AppData\Roaming\Windupdt\mstsx.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2032
        • C:\Users\Admin\AppData\Roaming\Windupdt\mstsx.exe
          C:\Users\Admin\AppData\Roaming\Windupdt\mstsx.exe
          4⤵
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • Disables RegEdit via registry modification
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Windows security modification
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2332
          • C:\Windows\SysWOW64\notepad.exe
            C:\Windows\SysWOW64\notepad.exe
            5⤵
              PID:3256
        • C:\Windows\SysWOW64\notepad.exe
          C:\Windows\SysWOW64\notepad.exe
          3⤵
          • Deletes itself
          PID:1504

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Windupdt\mstsx.exe

      Filesize

      744KB

      MD5

      f5bdb0bb069c87b7efff6e3b83890187

      SHA1

      4d1ad24b615fdba85dde5279517e186484c8f712

      SHA256

      ce52276672f31f36d89450798b7bf3a129f82290eb4c8d5dd756f10026953bc6

      SHA512

      2d5086d499ef21fb3a4340e1f49f09b57d044fe73913fe6ac84f69626300ba87be6519dcfe1394aa3183aa962b18a32e8597cb5e1621716f72420422a580a30f

    • memory/1052-11-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/1052-13-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/1052-89-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB

    • memory/1364-2-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/1364-3-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/1364-4-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/1364-5-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/1364-6-0x0000000002230000-0x0000000002231000-memory.dmp

      Filesize

      4KB

    • memory/1364-90-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/1504-74-0x00000000004A0000-0x00000000004A1000-memory.dmp

      Filesize

      4KB

    • memory/2332-86-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/2332-83-0x00000000026F0000-0x00000000026F1000-memory.dmp

      Filesize

      4KB

    • memory/2332-84-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/2332-82-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/2332-87-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/2332-88-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/2332-81-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/2332-91-0x0000000013140000-0x00000000131F7000-memory.dmp

      Filesize

      732KB

    • memory/3256-85-0x00000000012A0000-0x00000000012A1000-memory.dmp

      Filesize

      4KB

    • memory/4540-8-0x00000000004D0000-0x00000000004D1000-memory.dmp

      Filesize

      4KB