Analysis

  • max time kernel
    120s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    23/10/2024, 17:12

General

  • Target

    b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe

  • Size

    964KB

  • MD5

    55ef299dc3a3c80f25554923566ac6a0

  • SHA1

    55313910c1e6c2c8b9aaf718032abec535827f7b

  • SHA256

    b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9

  • SHA512

    ecb41fa1838b88205ea28514d2483044e36057a67743e712f8653497e5e24fe56ac9662fd2b05de634eaa945d639cc29e516323e906aff67725420d9800fc557

  • SSDEEP

    24576:O/9tT24rAjDLG50Xot0fvF+2rGVvELMR2mA6O:OrUL4taI2O52xL

Malware Config

Extracted

Family

darkcomet

Botnet

FUD Crypt

C2

wcrat2.no-ip.org:201

Mutex

DC_MUTEX-F9SVRHH

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    j6CuqwUwAD5D

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    msdcsc.exe

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • AutoIT Executable 10 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
    "C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe
      "C:\Users\Admin\AppData\Local\Temp\b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9N.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2888
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3024
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.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
          PID:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

    Filesize

    964KB

    MD5

    55ef299dc3a3c80f25554923566ac6a0

    SHA1

    55313910c1e6c2c8b9aaf718032abec535827f7b

    SHA256

    b8fdffbc9feea0a09a486ef190122efa7defd7a41bf3e3dacdc6ac6c4f5d38d9

    SHA512

    ecb41fa1838b88205ea28514d2483044e36057a67743e712f8653497e5e24fe56ac9662fd2b05de634eaa945d639cc29e516323e906aff67725420d9800fc557

  • C:\Users\Admin\AppData\Local\Temp\pjdnbdi

    Filesize

    35KB

    MD5

    f6ad8ad2d6df0a7b2274367c266e1ee2

    SHA1

    755025c72d2042639ef8d735eb45f1a0712afee2

    SHA256

    c94d25a9d3c8b0233c7c69e21fb257103f0bedd618331d7587f1e7b34852c2a4

    SHA512

    34774dffc31c4087f242242f069add248d0622a7148dfb97ceb41d0e387dc72b258f34229a5ff1e7d41f80872c7cfcbf6e0b1c1376259b70f694e2e93228ddfe

  • memory/1492-42-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/1492-3-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/1492-2-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/1492-1-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/1492-121-0x0000000003D80000-0x0000000003ED4000-memory.dmp

    Filesize

    1.3MB

  • memory/1492-0-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/1492-43-0x0000000003D80000-0x0000000003ED4000-memory.dmp

    Filesize

    1.3MB

  • memory/2628-112-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-116-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-125-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-124-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-123-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-122-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-120-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-119-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-118-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-117-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-115-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-114-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-113-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-109-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-111-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-110-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-108-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2628-107-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-39-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-63-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-37-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-33-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-44-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-45-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-40-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-31-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-29-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-35-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-25-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-23-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-27-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2888-46-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/3024-85-0x0000000003820000-0x0000000003974000-memory.dmp

    Filesize

    1.3MB

  • memory/3024-59-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/3024-60-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/3024-58-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/3024-64-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB

  • memory/3024-106-0x0000000000400000-0x0000000000554000-memory.dmp

    Filesize

    1.3MB