General

  • Target
    Payload.exe
  • Size 55KB
  • Sample261031-etlvmsgz9s
  • SHA256 cf22bd8e3ea7ec65e7537b4424ea6756d455f6a2aa0db6bf4e2c97bd2f776c63
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • njrat

Version
  • <- NjRAT 0.7d Horror Edition ->

Botnet
  • HacKed by vrmy

C2
  • 8.tcp.cpolar.cn:13954

Mutex
  • 15c13215b41cae9a25f9cb6dbc2c565c

Attributes
  • reg_key

    15c13215b41cae9a25f9cb6dbc2c565c

  • splitter

    Y262SUCZ4UJJ

Targets

    • Target
      Payload.exe
    • Size 55KB
    • SHA256 cf22bd8e3ea7ec65e7537b4424ea6756d455f6a2aa0db6bf4e2c97bd2f776c63
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Modifies system executable filetype association

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v16

Tasks