Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2025, 12:14

General

  • Target

    ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.exe

  • Size

    306KB

  • MD5

    e1d8cb76cd0f3542094d22d31ed0a745

  • SHA1

    6e69107c2a66f5ba99e5afcefcc76ffb74cb75fc

  • SHA256

    ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50

  • SHA512

    710740a7a38a5ce555844d21be452c817919894a291c012eecc1ed425867a7ab299e4049cedbfc9eb1a48de8c16a7b734d167582f149ec2bafb01fc5176b1524

  • SSDEEP

    6144:uuQDRdq7Ww4MthMtPckBP6T08z/zxWPxZuuOyU:uu2Rw7WwREzolWZZuvh

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 26 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\ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.exe
    "C:\Users\Admin\AppData\Local\Temp\ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.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:1596
    • C:\Users\Admin\AppData\Local\Temp\ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.exe
      "C:\Users\Admin\AppData\Local\Temp\ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.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:5060
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4688
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1428
      • 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:4624
        • 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:2976
      • 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:876
        • 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:968
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:3308

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

    e1d8cb76cd0f3542094d22d31ed0a745

    SHA1

    6e69107c2a66f5ba99e5afcefcc76ffb74cb75fc

    SHA256

    ce7cfc1461bfed84d592ecce5a97019032c20c23c75fe2cf923772143b7dbc50

    SHA512

    710740a7a38a5ce555844d21be452c817919894a291c012eecc1ed425867a7ab299e4049cedbfc9eb1a48de8c16a7b734d167582f149ec2bafb01fc5176b1524

  • memory/876-72-0x0000000000560000-0x00000000005AA000-memory.dmp

    Filesize

    296KB

  • memory/876-73-0x0000000000560000-0x00000000005AA000-memory.dmp

    Filesize

    296KB

  • memory/968-89-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-96-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-95-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-94-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-93-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-92-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-91-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-84-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-77-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-79-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-78-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-80-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-88-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-83-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-87-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-82-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-85-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/968-86-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/1596-1-0x00000000006A0000-0x00000000006EA000-memory.dmp

    Filesize

    296KB

  • memory/1596-0-0x00000000006A0000-0x00000000006EA000-memory.dmp

    Filesize

    296KB

  • memory/3308-81-0x0000000000D70000-0x0000000000D71000-memory.dmp

    Filesize

    4KB

  • memory/5060-5-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/5060-2-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/5060-71-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/5060-4-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/5060-8-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/5060-6-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/5060-7-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB