General

  • Target
    PO# 2001840394 - NEW ORDER.exe
  • Size 1.2MB
  • Sample201109-3dkq75rjqa
  • SHA256 b88b1caee334cbd27f17d4310f2b51c26a5a9411452ad2f4b7fa17e1e81b59fb
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\Temp\5FADD7138A\Log.txt

  • masslogger

Ransom Note
  • ################################################################# MassLogger v1.3.7.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Professional 64bit Windows Serial Key: HYF8J-CVRMY-CM74G-RPHKF-PW487 CPU: Persocon Processor 2.5+ GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 11/11/2020 3:03:31 AM MassLogger Started: 11/11/2020 3:03:25 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RegAsm.exe MassLogger Melt: true MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Path
  • C:\Users\Admin\AppData\Local\Temp\CC3AB4D6D6\Log.txt

  • masslogger

Ransom Note
  • ################################################################# MassLogger v1.3.7.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 11/11/2020 3:03:24 AM MassLogger Started: 11/11/2020 3:03:20 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RegAsm.exe MassLogger Melt: true MassLogger Exit after delivery: false As Administrator: True Processes:

Targets

    • Target
      PO# 2001840394 - NEW ORDER.exe
    • Size 1.2MB
    • SHA256 b88b1caee334cbd27f17d4310f2b51c26a5a9411452ad2f4b7fa17e1e81b59fb
    • MD5 SHA1 SHA512
    • MassLogger

      Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

    • MassLogger Main Payload

    • MassLogger log file

      Detects a log file produced by MassLogger.

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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

MITRE ATT&CK Enterprise v6

Tasks