Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250410-en
  • resource tags

    arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18/04/2025, 03:27

General

  • Target

    JaffaCakes118_bc5e9d6c42c4a7a8f3e399628b35edc6.exe

  • Size

    792KB

  • MD5

    bc5e9d6c42c4a7a8f3e399628b35edc6

  • SHA1

    89467555b70aa69a09f2a9b6068d851bc6da3730

  • SHA256

    37f71d92f06d6db3a5660d2029e0828277f5970942554372c0405eeb5daec278

  • SHA512

    f85ba3ccf4a76412a53d286b8dd6ab02feca4736c27e2b5a6ed6b158543bf5780ceef3c213613727f0b9ddeb267bb5ad1bb79fc70ecc5c2610c7b0ec9624d5ff

  • SSDEEP

    24576:XlvYrG9qagUztjgUVWdxfYEbKQZ87bqeA4L9j/A:eK9qagUO2wO7bXA4

Malware Config

Extracted

Family

darkcomet

Botnet

Mooose

C2

masha.zapto.org:1604

Mutex

DC_MUTEX-9HH2WSZ

Attributes
  • InstallPath

    Windupdt\winupdate.exe

  • gencode

    iUjv.BRt=lEN

  • 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 6 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Checks BIOS information in registry 2 TTPs 3 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Windows security modification 2 TTPs 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 12 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc5e9d6c42c4a7a8f3e399628b35edc6.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc5e9d6c42c4a7a8f3e399628b35edc6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6016
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc5e9d6c42c4a7a8f3e399628b35edc6.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc5e9d6c42c4a7a8f3e399628b35edc6.exe"
      2⤵
      • 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
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3836
      • C:\Users\Admin\Documents\Windupdt\winupdate.exe
        "C:\Users\Admin\Documents\Windupdt\winupdate.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5988
        • C:\Users\Admin\Documents\Windupdt\winupdate.exe
          "C:\Users\Admin\Documents\Windupdt\winupdate.exe"
          4⤵
          • 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
          PID:5096
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3888
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:4904
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\Windupdt\winupdate.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Users\Admin\Documents\Windupdt\winupdate.exe
      C:\Users\Admin\Documents\Windupdt\winupdate.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1128
      • C:\Users\Admin\Documents\Windupdt\winupdate.exe
        C:\Users\Admin\Documents\Windupdt\winupdate.exe
        3⤵
        • 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 behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2112

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat

    Filesize

    119B

    MD5

    760784e390ae008a654e492285f01072

    SHA1

    8c524fdd6567eae87d811b681098193dcdeff6c3

    SHA256

    eb80e56c9bead57fd9305f00357547afae43beac03d41f6f60a73001f1bb88f9

    SHA512

    478302a4d38cc154f4ed328b3c63b492a9c302803b4485a443b4eacb7987d4f57ac51d1e34e8a4ed7a8dd0e34b58a589eac2835353c18e24d3f055055835033b

  • C:\Users\Admin\Documents\Windupdt\winupdate.exe

    Filesize

    792KB

    MD5

    bc5e9d6c42c4a7a8f3e399628b35edc6

    SHA1

    89467555b70aa69a09f2a9b6068d851bc6da3730

    SHA256

    37f71d92f06d6db3a5660d2029e0828277f5970942554372c0405eeb5daec278

    SHA512

    f85ba3ccf4a76412a53d286b8dd6ab02feca4736c27e2b5a6ed6b158543bf5780ceef3c213613727f0b9ddeb267bb5ad1bb79fc70ecc5c2610c7b0ec9624d5ff

  • memory/2112-47-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-45-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-54-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-53-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-20-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-26-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-24-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-25-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-23-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-27-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-52-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-51-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-50-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-49-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-48-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-41-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-46-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-42-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-43-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/2112-44-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/3836-0-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/3836-3-0x0000000002840000-0x0000000002841000-memory.dmp

    Filesize

    4KB

  • memory/3836-1-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/3836-19-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/3836-2-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/3836-4-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/5096-36-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/5096-34-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/5096-35-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB

  • memory/5096-33-0x0000000000400000-0x00000000004C8000-memory.dmp

    Filesize

    800KB