Overview

overview

10

Static

static

1

7a6db8aecc...d7.exe

windows7-x64

10

7a6db8aecc...d7.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    7a6db8aecc2376ec7dfc50085757841523fb69135e364b70c7319bf7a39209d7.zip

  • Size

    1.3MB

  • Sample

    230321-r3x1gsde21

  • MD5

    5a1f117b8063cd32664bef7d8d18b752

  • SHA1

    ba17eb47dd751942d30be20c7902a8a5f6164cce

  • SHA256

    2528083cb53974b2448747433aa256e6b440042cbb3afeeae4f4ddc99b601d01

  • SHA512

    743fc085f87a38b8a6970d155b074951da548650b18d1bc8cfc10b8498e7c3b51cb6cadf6da6087cc92ba5c8057b05ff1ce0dffd721f8f66a03249fbd31f248b

  • SSDEEP

    24576:4uPWJYfaYYJZwG9S1hykuvpypYS6G+TplAO0hBr2u0RsU9YQK:9uJVkWdypYSeU5Dz0Kd

Score
10/10
quasarsuccesspersistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

SUCCESS

C2

41.185.97.216:4782

Mutex

MUTEX_QAxMFzrXWG2cbIHPGK

Attributes
  • encryption_key

    4DwUV8AnxPgmXSMeThKb

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    cmd

  • subdirectory

    SubDir

Targets

    • Target

      7a6db8aecc2376ec7dfc50085757841523fb69135e364b70c7319bf7a39209d7.exe

    • Size

      2.9MB

    • MD5

      68a23c2fc62bddad0a2c6cf36003577b

    • SHA1

      67a19bf734520933adfa28afc017c3af1d6a3d5b

    • SHA256

      7a6db8aecc2376ec7dfc50085757841523fb69135e364b70c7319bf7a39209d7

    • SHA512

      0386671ee83c0825f80a0c95b4e21eb23054878546aff5d8ef63a3bcc6a32c53a61397009aee8e8c5fc171b1ed0e9b69a31111eb1b860e1ff67264fcac806cef

    • SSDEEP

      24576:plubLwtFDS7FYNYD7264xnRhc/LSXxH227hqRCeFcOziFJLUfdKTgWA22222222:gZ7h4xnRhcGXxHxOqdq1pup

    Score
    10/10
    quasarsuccesspersistencespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • 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

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks