General

  • Target

    a84a6a7eb96698a85d9506da6d3e6eb99cb05544c1a178a7c3348486f66942a2

  • Size

    786KB

  • Sample

    220521-b1j3vacgf5

  • MD5

    1f707f750c71abef0bf6a667d6677313

  • SHA1

    be112b5bcf18a63a5004e4a280e97ee060c476a7

  • SHA256

    a84a6a7eb96698a85d9506da6d3e6eb99cb05544c1a178a7c3348486f66942a2

  • SHA512

    d9928b66cfd3d91d37772d8b3b57f26ae4c6040b8f818ee69e84d04d00adbeb706be8e0745d5f8975513e13ca0f8bfa0fd56472f435e2ddf54aff57febd99d59

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Cotton2019*

Targets

    • Target

      Purchase order No# PO-38001830013 dt 10-05-20.exe

    • Size

      879KB

    • MD5

      14e4f7e80b29919cb9e669f2b4f92599

    • SHA1

      6bf307456d4881bd68dfd64b9a0cf20b9f0e5909

    • SHA256

      ad8cb5298f8a5a5cfdef92b5aee76f05e43d9e81fabfe79e0f880adc6690821b

    • SHA512

      d19909fb2a2135c838bc0f53d8593dc417962f84e121f79c3e44a1951046b752d3fb003f00b94a8cb794befceb181c52efff8a66259f66e3a5dde9834b65be33

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    • MassLogger

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

    • 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