Overview

overview

10

Static

static

3

9f052ffa94...7e.exe

windows7-x64

6

9f052ffa94...7e.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9f052ffa940763ede6b28dc1ebd4757e

  • Size

    654KB

  • Sample

    231222-qkpqqafgeq

  • MD5

    9f052ffa940763ede6b28dc1ebd4757e

  • SHA1

    0a4f3e7f6a573c0fe321ebf46aee344e08a28e25

  • SHA256

    c2361c29db867d86c9f6d361b3d3394d0d847775ebcb84422c095369ccde5acd

  • SHA512

    ebc566c0794b9edd8a7373636c065e3d67ee0156b33969a30950116b984cad81c352d96290cf4607fec7d3c2bf2e7a1d87f6231db6543a74df26da63ff5cbbbc

  • SSDEEP

    12288:c6bJhnrd2Qsm/+/dnGz7O0Y244sMYcoFMVyMg+Yy1Wcwemn58GVuv:ckJhngpn9kNsMwbMgkK58guv

Score
10/10
quasarvenomratsep05evasionpersistenceratrootkitspywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

SEP05

C2

23.105.131.187:7812

Mutex

VNM_MUTEX_ea14HLQ5adxyrFdD2X

Attributes
  • encryption_key

    jUWfdDb1toPE0KAlGJWH

  • install_name

    Windows Security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update Service

  • subdirectory

    Windows Security Update

Targets

    • Target

      9f052ffa940763ede6b28dc1ebd4757e

    • Size

      654KB

    • MD5

      9f052ffa940763ede6b28dc1ebd4757e

    • SHA1

      0a4f3e7f6a573c0fe321ebf46aee344e08a28e25

    • SHA256

      c2361c29db867d86c9f6d361b3d3394d0d847775ebcb84422c095369ccde5acd

    • SHA512

      ebc566c0794b9edd8a7373636c065e3d67ee0156b33969a30950116b984cad81c352d96290cf4607fec7d3c2bf2e7a1d87f6231db6543a74df26da63ff5cbbbc

    • SSDEEP

      12288:c6bJhnrd2Qsm/+/dnGz7O0Y244sMYcoFMVyMg+Yy1Wcwemn58GVuv:ckJhngpn9kNsMwbMgkK58guv

    Score
    10/10
    persistencequasarvenomratsep05evasionratrootkitspywarestealertrojan

    • 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

    • 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 v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

3
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Credential Access

Discovery

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks