General

  • Target

    encoder.dll.exe

  • Size

    1.0MB

  • Sample

    230519-n6xmcadf49

  • MD5

    9a642dd3ee4e9547f28956afe81584ed

  • SHA1

    1cfcf880cdb9b877264701c89aa7b782007b06c4

  • SHA256

    46d36b84f0f8eb9da5b5a3247466f416885da77349f723cfbb7fb3a8031bda14

  • SHA512

    78d584f648969c8ce624d3800c9d7b04f367bb38603c4e3bfc8bf2eab79315c27f3fa9152ec386156270a64dd3b69322efc2c007e77276bb5b2ff171d40a6ad2

  • SSDEEP

    24576:3yupIF0+zjzVrMsIHYETbaGIJTUjnvp1iJyRKZ:Cup6zjzVrMJVn73icRK

Malware Config

Extracted

Family

redline

Botnet

muser

C2

77.91.68.253:19065

Attributes
  • auth_value

    ab307a8e027ba1296455e3d548f168a3

Targets

    • Target

      encoder.dll.exe

    • Size

      1.0MB

    • MD5

      9a642dd3ee4e9547f28956afe81584ed

    • SHA1

      1cfcf880cdb9b877264701c89aa7b782007b06c4

    • SHA256

      46d36b84f0f8eb9da5b5a3247466f416885da77349f723cfbb7fb3a8031bda14

    • SHA512

      78d584f648969c8ce624d3800c9d7b04f367bb38603c4e3bfc8bf2eab79315c27f3fa9152ec386156270a64dd3b69322efc2c007e77276bb5b2ff171d40a6ad2

    • SSDEEP

      24576:3yupIF0+zjzVrMsIHYETbaGIJTUjnvp1iJyRKZ:Cup6zjzVrMJVn73icRK

    • Modifies Windows Defender Real-time Protection settings

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Windows security modification

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks