Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240425-yvacsaea8s

  • MD5

    c9732d408949b3d82ac9a957d399e0bb

  • SHA1

    413c3d019088c910fd0bf9566c970bbe6757c33b

  • SHA256

    733436d5bc6464c09757584b8609fa28898f2622412e55421ebdab550e02e4ea

  • SHA512

    1f3d9b8cc4e04fdc6e56f687e7dd69a964581adf5f3f6b2ee03484d33d70f6487005046ff07cc2fbccb9be9ac80fc2c20906da07b4f0afcbb54581c42a9da45d

  • SSDEEP

    49152:avUt62XlaSFNWPjljiFa2RoUYIocRJ6UbR3LoGdW01THHB72eh2NT:avI62XlaSFNWPjljiFXRoUYIocRJ6e

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

ZE:4782

Mutex

911e182a-c76f-4c94-979c-4ba6b3b24941

Attributes
  • encryption_key

    EFF71D9D44DB5A6D9B14E191FC8CC16A1F4043B2

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      c9732d408949b3d82ac9a957d399e0bb

    • SHA1

      413c3d019088c910fd0bf9566c970bbe6757c33b

    • SHA256

      733436d5bc6464c09757584b8609fa28898f2622412e55421ebdab550e02e4ea

    • SHA512

      1f3d9b8cc4e04fdc6e56f687e7dd69a964581adf5f3f6b2ee03484d33d70f6487005046ff07cc2fbccb9be9ac80fc2c20906da07b4f0afcbb54581c42a9da45d

    • SSDEEP

      49152:avUt62XlaSFNWPjljiFa2RoUYIocRJ6UbR3LoGdW01THHB72eh2NT:avI62XlaSFNWPjljiFXRoUYIocRJ6e

    Score
    10/10
    quasaroffice04spywaretrojan

    • 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.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks