Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2025, 03:20

General

  • Target

    JaffaCakes118_31412729528ff5bc80c5582bbe784628.exe

  • Size

    315KB

  • MD5

    31412729528ff5bc80c5582bbe784628

  • SHA1

    26bc7dc6a6d763a96925f41f34d78ca6157ee4fc

  • SHA256

    1e1fe04cd20a5b8b47be1188c98ce2979b4c56257967f3bff3218a194b9d5efb

  • SHA512

    3628cc231e19dfaa66466d17b02db07967cad08068a57e002c4bd070490232d2450848ac0d2fa900553f108abc8ef0691c11b2109b5034ba21014790e072847b

  • SSDEEP

    6144:LSTv34CFfifD2gVKVTQQ249HZ52KTh9XKOCgLJacj5/AZtRsO:LEPXgr8VMQDT52WXKq9fj5/AZjv

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

fugitif.no-ip.org:2702

Mutex

DC_MUTEX-GJKJZWL

Attributes
  • InstallPath

    driver\winupdate.exe

  • gencode

    EQ=TzK#norn1

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    winupdater

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
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • UPX packed file 33 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 6 IoCs

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

  • 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
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 51 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31412729528ff5bc80c5582bbe784628.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31412729528ff5bc80c5582bbe784628.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31412729528ff5bc80c5582bbe784628.exe
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2196
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_31412729528ff5bc80c5582bbe784628.exe
        3⤵
        • Modifies WinLogon for persistence
        • Checks BIOS information in registry
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2864
        • C:\Windows\SysWOW64\explorer.exe
          "C:\Windows\SysWOW64\explorer.exe"
          4⤵
            PID:2812
          • C:\driver\winupdate.exe
            "C:\driver\winupdate.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2700
            • C:\driver\winupdate.exe
              5⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:2032
              • C:\driver\winupdate.exe
                6⤵
                • Modifies firewall policy service
                • Windows security bypass
                • Checks BIOS information in registry
                • Executes dropped EXE
                • Windows security modification
                • System Location Discovery: System Language Discovery
                • Checks processor information in registry
                • Enumerates system info in registry
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                PID:2972

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\driver\winupdate.exe

      Filesize

      315KB

      MD5

      31412729528ff5bc80c5582bbe784628

      SHA1

      26bc7dc6a6d763a96925f41f34d78ca6157ee4fc

      SHA256

      1e1fe04cd20a5b8b47be1188c98ce2979b4c56257967f3bff3218a194b9d5efb

      SHA512

      3628cc231e19dfaa66466d17b02db07967cad08068a57e002c4bd070490232d2450848ac0d2fa900553f108abc8ef0691c11b2109b5034ba21014790e072847b

    • memory/2032-68-0x0000000000400000-0x000000000040A000-memory.dmp

      Filesize

      40KB

    • memory/2032-56-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2196-23-0x0000000000400000-0x000000000040A000-memory.dmp

      Filesize

      40KB

    • memory/2196-4-0x0000000000400000-0x000000000040A000-memory.dmp

      Filesize

      40KB

    • memory/2196-7-0x0000000000400000-0x000000000040A000-memory.dmp

      Filesize

      40KB

    • memory/2308-3-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2308-6-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2308-0-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2700-51-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2700-50-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2700-48-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2700-49-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2700-54-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2700-45-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2700-44-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2700-43-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2864-24-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-11-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-35-0x00000000039D0000-0x00000000039DC000-memory.dmp

      Filesize

      48KB

    • memory/2864-26-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-42-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-25-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-27-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-12-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-14-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2864-18-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-20-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-19-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2864-29-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2972-81-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2972-73-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2972-71-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-72-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-70-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-75-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-78-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-79-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-77-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-76-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-74-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-80-0x0000000000020000-0x000000000002C000-memory.dmp

      Filesize

      48KB

    • memory/2972-82-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-83-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-84-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-85-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-86-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-87-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-88-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-89-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-90-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-91-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB

    • memory/2972-92-0x0000000000400000-0x00000000004B5000-memory.dmp

      Filesize

      724KB