Overview

overview

10

Static

static

1

BLToolsMod.exe

windows7-x64

10

BLToolsMod.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    BLToolsMod.exe

  • Size

    763KB

  • Sample

    230205-tq2h9aaa94

  • MD5

    869037e716218fb7551d84b8ce7d0ae7

  • SHA1

    12cb776519eeb2d5e6a7ab1ddce3a09f143d5f18

  • SHA256

    305cfdd7d464938cabe66fcf3116df431c10742c775a4a588d38349ea18a7fb6

  • SHA512

    6840e10d1daeacd169dba4a0049bc3b9087726dd45551b9a9587d57ec45d926356ce1656a39fdf35c1acb4020c564ec1f6a910fd83cde99e3ff75195728c72d2

  • SSDEEP

    12288:SAZdPU5ttcsREhy5IYU8OaNISOvsk0gnT467zpmw7OfimWm/YfdFxfJ:S2UVc+EhyuAOaNIBXnT46fpmiOfimWy4

Score
10/10
purecrypterquasarrevengeratoffice04downloaderloaderpersistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office04

C2

youhackernetpaingodxd.duckdns.org:5557

blablashitspreading.ddns.net:5557
Mutex

xEoEv3HHdyEIYwJRFM

Attributes
  • encryption_key

    w3WfcmWh1iXT9cxeKFEX

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      BLToolsMod.exe

    • Size

      763KB

    • MD5

      869037e716218fb7551d84b8ce7d0ae7

    • SHA1

      12cb776519eeb2d5e6a7ab1ddce3a09f143d5f18

    • SHA256

      305cfdd7d464938cabe66fcf3116df431c10742c775a4a588d38349ea18a7fb6

    • SHA512

      6840e10d1daeacd169dba4a0049bc3b9087726dd45551b9a9587d57ec45d926356ce1656a39fdf35c1acb4020c564ec1f6a910fd83cde99e3ff75195728c72d2

    • SSDEEP

      12288:SAZdPU5ttcsREhy5IYU8OaNISOvsk0gnT467zpmw7OfimWm/YfdFxfJ:S2UVc+EhyuAOaNIBXnT46fpmiOfimWy4

    Score
    10/10
    purecrypterquasarrevengeratoffice04downloaderloaderpersistencespywaretrojan

    • Detect PureCrypter injector

      loader

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

      loaderdownloaderpurecrypter

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • RevengeRAT

      Remote-access trojan with a wide range of capabilities.

      trojanrevengerat

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks