Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2025, 18:39

General

  • Target

    9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe

  • Size

    306KB

  • MD5

    96cf8a8e1a535ce7aabd257142b2d240

  • SHA1

    b18c90bda95cbf32f7ab1970868952cfcaab3273

  • SHA256

    9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fb

  • SHA512

    89ee8c8aa55f2ba1e06b0ea278432bf51a149d198b56ca9d4c2437d31e90bc25a2e2d3e14dbd58cfa5aba483ef43a9cf48154f89ef1ef1e0eb5ec30e3152c682

  • SSDEEP

    6144:uuQDRdq7Ww4MthMtPckBP6T08z/zxWPxZuuOyU:uu2Rw7WwREzolWZZuvR

Malware Config

Extracted

Family

darkcomet

Botnet

FarCry

C2

octopus01.airdns.org:2404

octopus01.ddns.net:2404

Mutex

DC_MUTEX-YGBUNDC

Attributes
  • InstallPath

    Ubisoft\FarCry\FCupdate.exe

  • gencode

    jv2Y4dfih9vp

  • install

    true

  • offline_keylogger

    true

  • password

    V10tt0PC

  • persistence

    true

  • reg_key

    FCUpdate

rc4.plain

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 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.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 25 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 use of AdjustPrivilegeToken 48 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\9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe
    "C:\Users\Admin\AppData\Local\Temp\9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5484
    • C:\Users\Admin\AppData\Local\Temp\9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe
      "C:\Users\Admin\AppData\Local\Temp\9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe"
      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:2140
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4592
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fbN.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:4892
      • 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:4564
        • 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:4920
      • C:\Users\Admin\AppData\Local\Temp\Ubisoft\FarCry\FCupdate.exe
        "C:\Users\Admin\AppData\Local\Temp\Ubisoft\FarCry\FCupdate.exe"
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4772
        • C:\Users\Admin\AppData\Local\Temp\Ubisoft\FarCry\FCupdate.exe
          "C:\Users\Admin\AppData\Local\Temp\Ubisoft\FarCry\FCupdate.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3028
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:312

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Ubisoft\FarCry\FCupdate.exe

    Filesize

    306KB

    MD5

    96cf8a8e1a535ce7aabd257142b2d240

    SHA1

    b18c90bda95cbf32f7ab1970868952cfcaab3273

    SHA256

    9063a7361e3b891e9692af5b87de8fd65e14894f75ae4a0069e732446e5d47fb

    SHA512

    89ee8c8aa55f2ba1e06b0ea278432bf51a149d198b56ca9d4c2437d31e90bc25a2e2d3e14dbd58cfa5aba483ef43a9cf48154f89ef1ef1e0eb5ec30e3152c682

  • memory/312-81-0x00000000009C0000-0x00000000009C1000-memory.dmp

    Filesize

    4KB

  • memory/2140-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2140-2-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2140-4-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2140-5-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2140-6-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2140-7-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2140-8-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-78-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-85-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-95-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-79-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-77-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-94-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-80-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-93-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-82-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-83-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-84-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-92-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-86-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-87-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-88-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-89-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/3028-91-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/4772-72-0x0000000000570000-0x00000000005BA000-memory.dmp

    Filesize

    296KB

  • memory/4772-73-0x0000000000570000-0x00000000005BA000-memory.dmp

    Filesize

    296KB

  • memory/5484-1-0x0000000002470000-0x00000000024BA000-memory.dmp

    Filesize

    296KB

  • memory/5484-0-0x0000000002470000-0x00000000024BA000-memory.dmp

    Filesize

    296KB