General

  • Target

    e3c6a1546ff708f99122b730baeba4692769e0efeb9a3ccc58b215f9ab9fe8e8

  • Size

    977KB

  • Sample

    220521-cd4dmsdga2

  • MD5

    9ddfef3c6faa7f0b608baaaa9ec35c5c

  • SHA1

    785e715e3cff00c8d787184e932c0db4bca27357

  • SHA256

    e3c6a1546ff708f99122b730baeba4692769e0efeb9a3ccc58b215f9ab9fe8e8

  • SHA512

    1d2c87481d066bc4792eba5b81fba9ca823c05df85d9de69e4728ea09c53b8366717b46afb55c490dc436ace0b2bc57acc588497bb13af2ee08401ff9f71320f

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\F95B724EDE\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.2.0 ################################################################# ### 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 5:02:04 AM MassLogger Started: 5/21/2022 5:01:48 AM Interval: 6 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PI 200000679 Rev 3_pdf.exe As Administrator: True

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    evra12345

Targets

    • Target

      PI 200000679 Rev 3_pdf.exe

    • Size

      1.1MB

    • MD5

      87084086939792c1a2ccbb561c4fd598

    • SHA1

      3f52ccd6b2ab2618ce47e83bdc858cebea390544

    • SHA256

      a2a4fc12990dcf4a9778f96840b49be84f9563edd2b5209b6dac1ffb2ed8e38d

    • SHA512

      1a8b214bdfa2d9ef2243b3ab874947625b7074f09a3a2c0d8e6ba33697f8723c9ce145756600b1fd2c3119b0deda311f42ab7de64034f8d445a6ac44a472048d

    • 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.

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • 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