Overview

overview

10

Static

static

4e07acab11...72.exe

windows7-x64

10

4e07acab11...72.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4e07acab1178209379b2f3926e63da1a3002c9640667907db610216bd6e02e72

  • Size

    606KB

  • Sample

    221130-s7f37sfh6z

  • MD5

    c23863e0d7186334ca69903c6653ae06

  • SHA1

    6040256f4dabd5ee5dee6560e04c56f699532db6

  • SHA256

    4e07acab1178209379b2f3926e63da1a3002c9640667907db610216bd6e02e72

  • SHA512

    b9a7ffaa9a01a488efd29a9f9162c95a8c50f25d2183679f4783ce900319d81f4d375518667959b89bf8df002a869736a2c47bccae3b8ec5844f8f31c2fa7759

  • SSDEEP

    12288:HDNN+IaAFB0OLrdd5xSx8G3cK6TsrId6dd4WCWd9nNxtSR9UcN+Pjv:HDr+FqVvL5x4RcKYd83CWd9+UPv

Score
10/10
quasarvenomrathackedevasionpersistenceratrootkitspywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

hacked

C2

23.105.131.178:7812

Mutex

VNM_MUTEX_cFzA15c8rYLW8gVTCh

Attributes
  • encryption_key

    VGvtyILUmmcgl2gY0sSm

  • install_name

    Windows Security Health Service.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    SubDir

Targets

    • Target

      4e07acab1178209379b2f3926e63da1a3002c9640667907db610216bd6e02e72

    • Size

      606KB

    • MD5

      c23863e0d7186334ca69903c6653ae06

    • SHA1

      6040256f4dabd5ee5dee6560e04c56f699532db6

    • SHA256

      4e07acab1178209379b2f3926e63da1a3002c9640667907db610216bd6e02e72

    • SHA512

      b9a7ffaa9a01a488efd29a9f9162c95a8c50f25d2183679f4783ce900319d81f4d375518667959b89bf8df002a869736a2c47bccae3b8ec5844f8f31c2fa7759

    • SSDEEP

      12288:HDNN+IaAFB0OLrdd5xSx8G3cK6TsrId6dd4WCWd9nNxtSR9UcN+Pjv:HDr+FqVvL5x4RcKYd83CWd9+UPv

    Score
    10/10
    quasarvenomrathackedevasionpersistenceratrootkitspywarestealertrojan

    • 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

      evasiontrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • VenomRAT

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

      ratrootkitstealervenomrat

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • 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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

2
T1089

Install Root Certificate

1
T1130

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks