Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-12-2024 03:03

General

  • Target

    f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe

  • Size

    443KB

  • MD5

    f1fba390156ecf5fd54a788ce6014017

  • SHA1

    52f0f84f2a3c3e749a748a2a3e5532eff7500463

  • SHA256

    f004d8af06d317be8c725af9f0a0b07ad8e7232da8d96d95e773b8e28e6acfec

  • SHA512

    b4c91fffcb0d88012799b6f880cfe2ee82b2a632cab0370285a6751b0df4ab3bbd67fa8c588689ab01f65250a9e45074ad7bb411ec5deee26e66eeac31ab041d

  • SSDEEP

    6144:0CJUBApDw9gDsBhMKA72UYI1W82cODU/3SZwmLRlHzX5ljFJlh2t:0ZBMDw9RBaKcXsinq/lZ32t

Malware Config

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 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • UPX packed file 29 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 12 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • 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\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4860
      • C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe"
        3⤵
        • 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:4348
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe" +s +h
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2164
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe" +s +h
            5⤵
            • Sets file to hidden
            • System Location Discovery: System Language Discovery
            • Views/modifies file attributes
            PID:4644
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2480
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
            5⤵
            • Sets file to hidden
            • System Location Discovery: System Language Discovery
            • Views/modifies file attributes
            PID:2720
        • C:\driver\webloader.exe
          "C:\driver\webloader.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:384
          • C:\driver\webloader.exe
            "C:\driver\webloader.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5004
            • C:\driver\webloader.exe
              "C:\driver\webloader.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:2900
        • 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\f1fba390156ecf5fd54a788ce6014017_JaffaCakes118.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:4440
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 5
            5⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:4492

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\d4ld8ld4ha4tM4afD.tmp

    Filesize

    3KB

    MD5

    38d772c709a466b033975fe42fd3889f

    SHA1

    9c8f5690bd11ddefa36a3566bc19c50d07392f4a

    SHA256

    2c8e8f06744c8a3de87b37ce22c3e8a3625adcb51ee3daa8084f97f243646c42

    SHA512

    e303f8689703a9dba74b614f134db591dc9787532b708be48604d08a7d567d6973e03eec288e83f762623296cc84db956fe5b82eff929e9985a391b6435b33f0

  • C:\driver\webloader.exe

    Filesize

    443KB

    MD5

    f1fba390156ecf5fd54a788ce6014017

    SHA1

    52f0f84f2a3c3e749a748a2a3e5532eff7500463

    SHA256

    f004d8af06d317be8c725af9f0a0b07ad8e7232da8d96d95e773b8e28e6acfec

    SHA512

    b4c91fffcb0d88012799b6f880cfe2ee82b2a632cab0370285a6751b0df4ab3bbd67fa8c588689ab01f65250a9e45074ad7bb411ec5deee26e66eeac31ab041d

  • memory/2900-105-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-112-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-111-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-110-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-109-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-108-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-93-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-107-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-96-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-106-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-92-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-90-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-91-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-94-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-114-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-95-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-113-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-101-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-100-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-102-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-103-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/2900-104-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-13-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-79-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-14-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-12-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-11-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-10-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4348-8-0x0000000000400000-0x00000000004B8000-memory.dmp

    Filesize

    736KB

  • memory/4860-6-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4860-4-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/4860-7-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB