Analysis

  • max time kernel
    133s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-01-2024 05:43

General

  • Target

    20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe

  • Size

    65KB

  • MD5

    269de662c8b796f35e614a1aa807d769

  • SHA1

    43f32f0e0d952dba0bc2cb3c0657291f0930ec8a

  • SHA256

    20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

  • SHA512

    4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

  • SSDEEP

    1536:CjNlIZUY1sIzYi7D10Py7kCZnA37TuPAn:JZUYxYID6DUnArTuC

Malware Config

Signatures

  • Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
    "C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4864
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4576

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

    Filesize

    65KB

    MD5

    269de662c8b796f35e614a1aa807d769

    SHA1

    43f32f0e0d952dba0bc2cb3c0657291f0930ec8a

    SHA256

    20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7

    SHA512

    4d99243d079668e08342dc015e8f0749b452fd0ae4a1f7b7d047a1b499289ca6044691641db661f90978082e8262e43bcb6230f9e87e0f7f770d568d9b381009

  • memory/4576-18-0x0000000001150000-0x0000000001160000-memory.dmp

    Filesize

    64KB

  • memory/4576-19-0x0000000075290000-0x0000000075841000-memory.dmp

    Filesize

    5.7MB

  • memory/4576-17-0x0000000075290000-0x0000000075841000-memory.dmp

    Filesize

    5.7MB

  • memory/4576-21-0x0000000075290000-0x0000000075841000-memory.dmp

    Filesize

    5.7MB

  • memory/4864-0-0x0000000075290000-0x0000000075841000-memory.dmp

    Filesize

    5.7MB

  • memory/4864-2-0x0000000001010000-0x0000000001020000-memory.dmp

    Filesize

    64KB

  • memory/4864-1-0x0000000075290000-0x0000000075841000-memory.dmp

    Filesize

    5.7MB

  • memory/4864-16-0x0000000075290000-0x0000000075841000-memory.dmp

    Filesize

    5.7MB