Overview

overview

10

Static

static

10

fpsFIX.exe

windows10-1703-x64

10

Sharing

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General

  • Target

    fpsFIX.exe

  • Size

    534KB

  • Sample

    240209-bmxf1sdf8s

  • MD5

    68e20c59e6398f9fe522cc509d440698

  • SHA1

    5259db943f684f654c66ca277b28c410877494ad

  • SHA256

    6542a4adb925c38ae9fd6ddd0d5f838ac60b90e2db1e71ed71916fd6a988feb6

  • SHA512

    c25860340c9fd2b60a61490837febbe87d7912487cf6fbed0d31bd943c561767302be89c0309bc6e19df391e25adff5c4f6186a1b7f7fd181732c95da9a1ad09

  • SSDEEP

    6144:N8fGtiZAjx7ZgCUODKULTMMkbKGofLPRU9BZIbHtZLLLK1hI8MjXOZ3y7z2Qnp3Q:yexVgCUU5/MMdKB0Z/G1hyW3ApRa

Score
10/10
quasarvenomratoffice04evasionratrootkitspywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

127.0.0.1:4782

4.tcp.us-cal-1.ngrok.io:12688
Mutex

VNM_MUTEX_c2q7y2ayYutZ2XaYe7

Attributes
  • encryption_key

    JuBNDSQCyglnSfq0cvJE

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      fpsFIX.exe

    • Size

      534KB

    • MD5

      68e20c59e6398f9fe522cc509d440698

    • SHA1

      5259db943f684f654c66ca277b28c410877494ad

    • SHA256

      6542a4adb925c38ae9fd6ddd0d5f838ac60b90e2db1e71ed71916fd6a988feb6

    • SHA512

      c25860340c9fd2b60a61490837febbe87d7912487cf6fbed0d31bd943c561767302be89c0309bc6e19df391e25adff5c4f6186a1b7f7fd181732c95da9a1ad09

    • SSDEEP

      6144:N8fGtiZAjx7ZgCUODKULTMMkbKGofLPRU9BZIbHtZLLLK1hI8MjXOZ3y7z2Qnp3Q:yexVgCUU5/MMdKB0Z/G1hyW3ApRa

    Score
    10/10
    quasarvenomratoffice04evasionratrootkitspywarestealertrojan

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Modify Registry

2
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks