General

  • Target

    pdf-readers565.exe

  • Size

    1.0MB

  • Sample

    230521-m3fnzshf46

  • MD5

    60bb31528c97d9c52b0db0fe05c55a4b

  • SHA1

    a832db2e136737db2b57c94d29739fa39df8114f

  • SHA256

    caa744c8e12d2e63bad721fc8703218fa753d6e9ebffc4445366f3d57197e4ef

  • SHA512

    43747b03b7426dd5365eff6e1b23b512ff3b15222ac85eb815aff25cf95c7ad293e5e2f38e22500ce3ec31e8ffee53286fa14849b59b5ad8c3a3ec592f64c670

  • SSDEEP

    24576:ryMo2fYVymxN1nqvynTrsewrjlPnsMhPMuWsjbW4RE/tw:ed3XRqvyT/wvRsMRWsjs/

Malware Config

Extracted

Family

redline

Botnet

mixa

C2

185.161.248.37:4138

Attributes
  • auth_value

    9d14534b25ac495ab25b59800acf3bb2

Targets

    • Target

      pdf-readers565.exe

    • Size

      1.0MB

    • MD5

      60bb31528c97d9c52b0db0fe05c55a4b

    • SHA1

      a832db2e136737db2b57c94d29739fa39df8114f

    • SHA256

      caa744c8e12d2e63bad721fc8703218fa753d6e9ebffc4445366f3d57197e4ef

    • SHA512

      43747b03b7426dd5365eff6e1b23b512ff3b15222ac85eb815aff25cf95c7ad293e5e2f38e22500ce3ec31e8ffee53286fa14849b59b5ad8c3a3ec592f64c670

    • SSDEEP

      24576:ryMo2fYVymxN1nqvynTrsewrjlPnsMhPMuWsjbW4RE/tw:ed3XRqvyT/wvRsMRWsjs/

    • Modifies Windows Defender Real-time Protection settings

    • RedLine

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

    • RedLine payload

    • 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