Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    24/02/2024, 15:14

General

  • Target

    a229acff4e0605ad24eaf3d9c44fdb1b.exe

  • Size

    1.4MB

  • MD5

    a229acff4e0605ad24eaf3d9c44fdb1b

  • SHA1

    997612876080a0446d25a5587f3c8f8fa9b3dca6

  • SHA256

    a809e73a913bb35e9ca2368fcedd4e7311a4a651ed9edd081593b81bac03f605

  • SHA512

    3c73d379cbd711e32d6384739347b88c5e914ed573a7455714304cbaa853139a172c282f54ab96aa6cd556cf7a90e61d0d9a9013a1e41e5bcdd110ce69fb32f7

  • SSDEEP

    24576:yAEENIq8XwyVPQclDq/+WnpsST+7qNXz6:yAEsw722Wnmoz

Malware Config

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Drops file in Drivers directory 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 2 IoCs
  • Loads dropped DLL 6 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe
    "C:\Users\Admin\AppData\Local\Temp\a229acff4e0605ad24eaf3d9c44fdb1b.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Drivers directory
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1844
    • C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE
      "C:\Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:3056
    • C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      2⤵
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\[TGS]CAPUB V1.11.EXE

    Filesize

    27KB

    MD5

    33231ad6c7ffecc7a034488afad248cf

    SHA1

    ee0602f71af134e0180bb41d89287e28465ddd7a

    SHA256

    6c3c027daf830f992c17220ce827bcecfc2d9113f5f847001f4404156bb8cbf7

    SHA512

    0487fa712c7f8307904cdb1da23b2b84b1983ecff97685866e1332953f15864b9e300a8e2d125c6db10c52934238a8311ba2819ffff02c73c691674eabb65c97

  • \Windupdt\winupdate.exe

    Filesize

    1.4MB

    MD5

    a229acff4e0605ad24eaf3d9c44fdb1b

    SHA1

    997612876080a0446d25a5587f3c8f8fa9b3dca6

    SHA256

    a809e73a913bb35e9ca2368fcedd4e7311a4a651ed9edd081593b81bac03f605

    SHA512

    3c73d379cbd711e32d6384739347b88c5e914ed573a7455714304cbaa853139a172c282f54ab96aa6cd556cf7a90e61d0d9a9013a1e41e5bcdd110ce69fb32f7

  • memory/1844-0-0x0000000000400000-0x0000000000560000-memory.dmp

    Filesize

    1.4MB

  • memory/1844-1-0x00000000003F0000-0x00000000003F1000-memory.dmp

    Filesize

    4KB

  • memory/1844-26-0x0000000000400000-0x0000000000560000-memory.dmp

    Filesize

    1.4MB

  • memory/1844-19-0x0000000004100000-0x0000000004260000-memory.dmp

    Filesize

    1.4MB

  • memory/2560-25-0x0000000000400000-0x0000000000560000-memory.dmp

    Filesize

    1.4MB

  • memory/2560-27-0x0000000000B40000-0x0000000000CA0000-memory.dmp

    Filesize

    1.4MB

  • memory/2560-28-0x0000000000400000-0x0000000000560000-memory.dmp

    Filesize

    1.4MB