General

  • Target

    b8c1012ee15a746b67962168115e165e638c337d2fa305741b57752218827d7e

  • Size

    828KB

  • Sample

    220521-nck2fsddh6

  • MD5

    5b9d19e3b977a867e51e076ad3536048

  • SHA1

    ef5faec831bbd8f234f295985499eacc15e43f23

  • SHA256

    b8c1012ee15a746b67962168115e165e638c337d2fa305741b57752218827d7e

  • SHA512

    7d9baa7a26349f18044dc4e4e8f6415618a086856628570e70697c1e7ff75a506434aed06b4dec74f0cf6a9bdc5a382dcc15f107e0f4615e6b8ad19f61d12a37

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\F293CD6622\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.3.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 1:35:03 PM MassLogger Started: 5/21/2022 1:34:52 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe As Administrator: True

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Dmacdavid

Targets

    • Target

      RFQ #0605176.exe

    • Size

      1.4MB

    • MD5

      c711fc1c2e67bfa34d1117e526365033

    • SHA1

      842f0492db652ad8da1553b98240a5dd0a439de2

    • SHA256

      3027dc21e325fddbc9e6cd21b0491f3270190f219776de4971e510c4490d3c25

    • SHA512

      95e1628a6249fe7a0059f699c4e61a6f132c67c76c669056ecb37d36afc11e88d3f1cddcc5c7d72763c3f32f137c4b22c21231197c9078229265a04ed6d9db8b

    • MassLogger

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

    • 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.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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