Analysis

  • max time kernel
    130s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    28/03/2022, 15:34

General

  • Target
    3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe
  • Size 670KB
  • Sample220328-sz3bgafgap
  • SHA256 3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • DarkVNC

    DarkVNC is a malicious version of the famous VNC software.

  • suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon

    suricata: ET MALWARE VNCStartServer BOT Variant CnC Beacon

  • suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon

    suricata: ET MALWARE VNCStartServer USR Variant CnC Beacon

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

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe
    "C:\Users\Admin\AppData\Local\Temp\3a9397af4dfc720df6b8d7c2949bcac307fd5c2540ca114904f43c162e0f4a4b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe
      2⤵
        PID:4124

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/3456-134-0x0000000002BE0000-0x0000000003170000-memory.dmp

          memory/3456-135-0x0000000000400000-0x00000000004AD000-memory.dmp

          memory/3456-139-0x0000000000400000-0x00000000004AD000-memory.dmp

          memory/3456-140-0x0000000000400000-0x00000000004AD000-memory.dmp

          memory/3456-141-0x0000000003840000-0x0000000003980000-memory.dmp