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Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2022, 15:19

General

  • Target

    04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe

  • Size

    143KB

  • MD5

    66839a5f934952806eea150d2a022140

  • SHA1

    f727ff85a05706b1f36ff9aa8eedba1547768ceb

  • SHA256

    04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87

  • SHA512

    40846ef26183488b0e5e6b4840da89d5e4137a912712c6024a95650205ccc1dddaf65cae7982f8655a2426ed082009fa06c0c33d123efce6207ce1854d25b17b

  • SSDEEP

    3072:YCm/+JvYipDHV4pG6XM8ouZ3bsrDVtWp1MDyGDQcPgOAJocmBeAyBdXRPXyNx7kP:YCm/+JvrDHVGG6X6uZ3bsrJtWp1MDyG7

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

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

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

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe
    "C:\Users\Admin\AppData\Local\Temp\04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3944
    • C:\Users\Admin\AppData\Local\Temp\mamidou.exe
      "C:\Users\Admin\AppData\Local\Temp\mamidou.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1412
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\mamidou.exe" "mamidou.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:220

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\mamidou.exe

    Filesize

    143KB

    MD5

    66839a5f934952806eea150d2a022140

    SHA1

    f727ff85a05706b1f36ff9aa8eedba1547768ceb

    SHA256

    04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87

    SHA512

    40846ef26183488b0e5e6b4840da89d5e4137a912712c6024a95650205ccc1dddaf65cae7982f8655a2426ed082009fa06c0c33d123efce6207ce1854d25b17b

  • C:\Users\Admin\AppData\Local\Temp\mamidou.exe

    Filesize

    143KB

    MD5

    66839a5f934952806eea150d2a022140

    SHA1

    f727ff85a05706b1f36ff9aa8eedba1547768ceb

    SHA256

    04f7a8e9a8a1031fe34496d0729f8eef3f9fa6d04b9369116fdd7aeab95a3e87

    SHA512

    40846ef26183488b0e5e6b4840da89d5e4137a912712c6024a95650205ccc1dddaf65cae7982f8655a2426ed082009fa06c0c33d123efce6207ce1854d25b17b

  • memory/1412-138-0x0000000074AC0000-0x0000000075071000-memory.dmp

    Filesize

    5.7MB

  • memory/1412-139-0x0000000074AC0000-0x0000000075071000-memory.dmp

    Filesize

    5.7MB

  • memory/3944-132-0x0000000074AC0000-0x0000000075071000-memory.dmp

    Filesize

    5.7MB

  • memory/3944-136-0x0000000074AC0000-0x0000000075071000-memory.dmp

    Filesize

    5.7MB