Overview

overview

10

Static

static

invoice.exe

windows7_x64

invoice.exe

windows10-2004_x64

10

Sharing

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General

  • Target
    invoice.exe
  • Size 57KB
  • Sample220330-j79k3saef9
  • SHA256 1e36ddf6a89595dcc254a9688efec067f1292e962d3d62e3ab4b369ab8f9caa8
  • MD5 SHA1 SHA512
Score
10/10
wshratpersistencetrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://66.154.98.209:4498

Targets

    • Target
      invoice.exe
    • Size 57KB
    • SHA256 1e36ddf6a89595dcc254a9688efec067f1292e962d3d62e3ab4b369ab8f9caa8
    • MD5 SHA1 SHA512
    Score
    10/10
    wshratpersistencetrojan

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

      trojanwshrat

    • WSHRAT Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks