Analysis

  • max time kernel
    147s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    23/05/2022, 07:49

General

  • Target
    df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731.exe
  • Size 100KB
  • Sample220523-jnm8qsffcm
  • SHA256 df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • arkei

Botnet
  • Default

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

    suricata: ET MALWARE Base64 Encoded Stealer Config from Server - APPDATA or USERPROFILE Environment Variable M4

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731.exe
    "C:\Users\Admin\AppData\Local\Temp\df4876573295b4e7beb618db31a015ea617f61b811978bb168d432c4052f7731.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      2⤵
        PID:4216

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1684-130-0x00000000005F0000-0x000000000060E000-memory.dmp

          memory/1684-131-0x0000000005550000-0x0000000005AF4000-memory.dmp

          memory/1684-132-0x0000000005040000-0x00000000050D2000-memory.dmp

          memory/1684-133-0x0000000004FC0000-0x0000000004FCA000-memory.dmp

          memory/4216-135-0x0000000000400000-0x000000000043D000-memory.dmp

          memory/4216-137-0x0000000000400000-0x000000000043D000-memory.dmp

          memory/4216-138-0x0000000000400000-0x000000000043D000-memory.dmp