Overview

overview

10

Static

static

1

14733fd559...19.exe

windows7-x64

10

14733fd559...19.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    14733fd5597f39704c5029997540be19.exe

  • Size

    1.8MB

  • Sample

    230423-hch9zadc5x

  • MD5

    14733fd5597f39704c5029997540be19

  • SHA1

    8b546cb9b43b8e163faa425e8807a17151210d9b

  • SHA256

    0767b70abcbe52dde7d3997f689bbd65db1feeaf4f2861e85b3ca869c4017dc0

  • SHA512

    8aab246c9835cd66705a3935d964b3701fba5d2301057c24dd1cb173065e6d5f632e094b8370d7d7cfc01072c876039a09ca3adf655318e5b596f0237a1e5e55

  • SSDEEP

    24576:O+rC4mU6rP8/8fFNjy+W/wjFdUwIolLQKfIASWWeT/rZ2zEhosJqNZsWYoDmYzG0:OKO8ku6LUJep2AhRJqv0wzWjO

Score
10/10
quasarrevengeratgoogleevasionpersistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Google

C2

kas22.kro.kr:25565

Mutex

GoogleCrashHandler

Attributes
  • encryption_key

    0VhXsd7kmDzOXpW90Kp9

  • install_name

    GoogleCrashHandler.exe

  • log_directory

    GoogleLogs

  • reconnect_delay

    5000

  • startup_key

    GoogleCrashHandler

  • subdirectory

    Google

Targets

    • Target

      14733fd5597f39704c5029997540be19.exe

    • Size

      1.8MB

    • MD5

      14733fd5597f39704c5029997540be19

    • SHA1

      8b546cb9b43b8e163faa425e8807a17151210d9b

    • SHA256

      0767b70abcbe52dde7d3997f689bbd65db1feeaf4f2861e85b3ca869c4017dc0

    • SHA512

      8aab246c9835cd66705a3935d964b3701fba5d2301057c24dd1cb173065e6d5f632e094b8370d7d7cfc01072c876039a09ca3adf655318e5b596f0237a1e5e55

    • SSDEEP

      24576:O+rC4mU6rP8/8fFNjy+W/wjFdUwIolLQKfIASWWeT/rZ2zEhosJqNZsWYoDmYzG0:OKO8ku6LUJep2AhRJqv0wzWjO

    Score
    10/10
    quasarrevengeratgoogleevasionpersistencespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • RevengeRAT

      Remote-access trojan with a wide range of capabilities.

      trojanrevengerat

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • 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.

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

      evasion

    • 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 NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks