Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2024 07:49

General

  • Target

    f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe

  • Size

    333KB

  • MD5

    f30715126b5c27f3f4ac6152c13e55a7

  • SHA1

    4885bfc1ca02b739027e092bc5b1d83ea43590fc

  • SHA256

    ba05f15f416a924ad9c2d6a07624e1c79955de3ed89b929d4f285d325a52950a

  • SHA512

    8d6edf247449e1748ecb8353018a4ad788c1a74caaaf32324af1271ce421e77aa580c315f3f7c235c596e6a32da714e08427ce494e76998e1b3fa10f31d1367c

  • SSDEEP

    6144:k4KXklFaM3Y2NOoZmaTt7Lbt4eJMJOq1SQ3NIFGcp9tLJboTMBpdsGK/ttx:RKXfamaRn54eJMU0dIFP/7sTemGm

Malware Config

Signatures

  • Darkcomet

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

  • 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 3 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 28 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 55 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4712
    • C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4404
      • C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Checks computer location settings
        • Adds Run key to start application
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1244
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2912
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe" +s +h
            5⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:2492
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:772
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
            5⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:4176
        • C:\driver\webloader.exe
          "C:\driver\webloader.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:2864
          • C:\driver\webloader.exe
            "C:\driver\webloader.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:904
            • C:\driver\webloader.exe
              "C:\driver\webloader.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:4960
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\f30715126b5c27f3f4ac6152c13e55a7_JaffaCakes118.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1612
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 5
            5⤵
            • Runs ping.exe
            PID:464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\vAjboefhf3reil643aua.tmp

    Filesize

    3KB

    MD5

    95f62965058baacadb83c2da94ca47de

    SHA1

    b3115c8b56105e1eae02fda8b3536b3bf38436ca

    SHA256

    d76b2bde3f59d34dbf1bba5917bfd17470703801b17984ad90b6cebcf914deb9

    SHA512

    9fbd110938f1c0a97b1f2742c8233e28a7e2802477f9222d3e0db95c1959ed3a1183b57ca1c92f006e6dbdf3ab03297cba0c6e06e2e2778a6dfa1e4ac2d7cb77

  • C:\driver\webloader.exe

    Filesize

    333KB

    MD5

    f30715126b5c27f3f4ac6152c13e55a7

    SHA1

    4885bfc1ca02b739027e092bc5b1d83ea43590fc

    SHA256

    ba05f15f416a924ad9c2d6a07624e1c79955de3ed89b929d4f285d325a52950a

    SHA512

    8d6edf247449e1748ecb8353018a4ad788c1a74caaaf32324af1271ce421e77aa580c315f3f7c235c596e6a32da714e08427ce494e76998e1b3fa10f31d1367c

  • memory/1244-8-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1244-9-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1244-10-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1244-12-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/1244-13-0x0000000000670000-0x0000000000671000-memory.dmp

    Filesize

    4KB

  • memory/1244-78-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4404-4-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4404-6-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4404-7-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4960-94-0x00000000006D0000-0x00000000006D1000-memory.dmp

    Filesize

    4KB

  • memory/4960-105-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-93-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-96-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-95-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-91-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-97-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-98-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-102-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-103-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-104-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-92-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-106-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-107-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-108-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-109-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-110-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-111-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-112-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-113-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-114-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-115-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-116-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4960-117-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB