General

  • Target

    e.exe

  • Size

    10.4MB

  • Sample

    220525-g4lzhacebr

  • MD5

    621c28cd39d9d6f9a3377b8da8a8849b

  • SHA1

    5a025ed5f5baae77496e27fb2996fcb22d67ed40

  • SHA256

    54c1dc44cd458da7ec96343973fa7f350df27517715f41483f9cab748d3a9203

  • SHA512

    b5600b871ac950ec10d7bd0c38bb242a9921b1bccd2dacaa709471475a4c410eb2b43b693e2c18db40349f5c8e15b2c0ee93dde4eb3cbce2f47db880fe48033f

Malware Config

Extracted

Family

quasar

Mutex

Attributes
  • encryption_key

  • install_name

  • log_directory

  • reconnect_delay

    3000

  • startup_key

  • subdirectory

Extracted

Family

redline

Botnet

AwsR

C2

siyatermi.duckdns.org:17044

Extracted

Family

quasar

Version

2.1.0.0

Botnet

V/R/B

C2

siyatermi.duckdns.org:1518

Mutex

VNM_MUTEX_mJ6pCWZMe3OMOha5bj

Attributes
  • encryption_key

    g1Bi32PXFGwyBI9DJGTD

  • install_name

    Start Process.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Browser Module

  • subdirectory

    Sys Resources

Targets

    • Target

      e.exe

    • Size

      10.4MB

    • MD5

      621c28cd39d9d6f9a3377b8da8a8849b

    • SHA1

      5a025ed5f5baae77496e27fb2996fcb22d67ed40

    • SHA256

      54c1dc44cd458da7ec96343973fa7f350df27517715f41483f9cab748d3a9203

    • SHA512

      b5600b871ac950ec10d7bd0c38bb242a9921b1bccd2dacaa709471475a4c410eb2b43b693e2c18db40349f5c8e15b2c0ee93dde4eb3cbce2f47db880fe48033f

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • RedLine

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

    • RedLine Payload

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • suricata: ET MALWARE Common RAT Connectivity Check Observed

      suricata: ET MALWARE Common RAT Connectivity Check Observed

    • Executes dropped EXE

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Deletes itself

    • 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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v6

Tasks