Analysis

  • max time kernel
    120s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    07-01-2025 13:41

General

  • Target

    7b285af2b805ee66eeb295e1e27987988e5becc3a1a07238425d5d525506a395N.exe

  • Size

    757KB

  • MD5

    79f0d2b7aee2d18ed14fe11170404850

  • SHA1

    2fdfbd047d4b560418ca91a8d6b507350714f6bc

  • SHA256

    7b285af2b805ee66eeb295e1e27987988e5becc3a1a07238425d5d525506a395

  • SHA512

    6c34b9a691bcb18301e074cc3bf823c837d97d50fba92f8b5d03a4d9a5389e9749e3322b0bb938593cb1133929951e60caaae51a093757b6b6c539a5340f5c51

  • SSDEEP

    12288:79AFlAd0Z+89cxTGzO4AucTD8QP2lmFSrVs9LqnKy:pAQ6Zx9cxTmOrucTIEFSpOG

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
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7b285af2b805ee66eeb295e1e27987988e5becc3a1a07238425d5d525506a395N.exe
    "C:\Users\Admin\AppData\Local\Temp\7b285af2b805ee66eeb295e1e27987988e5becc3a1a07238425d5d525506a395N.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks BIOS information in registry
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • 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:2040
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      PID:1416
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\SysWOW64\explorer.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Checks BIOS information in registry
      • 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
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Windows\SysWOW64\notepad.exe
        C:\Windows\SysWOW64\notepad.exe
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windupdt\winupdate.exe

    Filesize

    757KB

    MD5

    79f0d2b7aee2d18ed14fe11170404850

    SHA1

    2fdfbd047d4b560418ca91a8d6b507350714f6bc

    SHA256

    7b285af2b805ee66eeb295e1e27987988e5becc3a1a07238425d5d525506a395

    SHA512

    6c34b9a691bcb18301e074cc3bf823c837d97d50fba92f8b5d03a4d9a5389e9749e3322b0bb938593cb1133929951e60caaae51a093757b6b6c539a5340f5c51

  • memory/1416-2-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/1416-29-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB

  • memory/1476-34-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1476-37-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/1476-36-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/1476-32-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/1476-45-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/1476-44-0x00000000001A0000-0x00000000001A1000-memory.dmp

    Filesize

    4KB

  • memory/1476-43-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/1476-38-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/1476-82-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/2040-0-0x0000000000310000-0x0000000000311000-memory.dmp

    Filesize

    4KB

  • memory/2040-39-0x0000000013140000-0x000000001320F000-memory.dmp

    Filesize

    828KB

  • memory/2228-81-0x00000000001F0000-0x00000000001F1000-memory.dmp

    Filesize

    4KB