Overview

overview

10

Static

static

10

a9e84520f8...4c.exe

windows7-x64

10

a9e84520f8...4c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a9e84520f8f8fd1383b54b297044ed2ca34e23172c7b6719a9185527b6fa194c.exe

  • Size

    3.1MB

  • Sample

    240316-c6rkjsbh22

  • MD5

    2386d1e1a35e51b0c869655580ab6431

  • SHA1

    44de49d3050793f1cea18a62fc7649c96deebaa7

  • SHA256

    a9e84520f8f8fd1383b54b297044ed2ca34e23172c7b6719a9185527b6fa194c

  • SHA512

    69d99d6d9d85c83f3d5029cec04abfddc54142044d39078799ba77fcec2715d41bbf4b114981fa697a8ee1afd9aa796733897e6d337ef1941e72d88631da5946

  • SSDEEP

    49152:nv+lL26AaNeWgPhlmVqvMQ7XSKOEoDkE2HBk/+F5oGd1LTHHB72eh2NT:nvuL26AaNeWgPhlmVqkQ7XSKroDKX

Score
10/10
quasaroffice01spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office01

C2

www.exiles.site:14782

192.151.244.144:14782
Mutex

32d6a0e2-190a-4f87-8d62-64ccb78f703b

Attributes
  • encryption_key

    A1F8672246A55DFAFA317BFDC5F14C91A5B344B9

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      a9e84520f8f8fd1383b54b297044ed2ca34e23172c7b6719a9185527b6fa194c.exe

    • Size

      3.1MB

    • MD5

      2386d1e1a35e51b0c869655580ab6431

    • SHA1

      44de49d3050793f1cea18a62fc7649c96deebaa7

    • SHA256

      a9e84520f8f8fd1383b54b297044ed2ca34e23172c7b6719a9185527b6fa194c

    • SHA512

      69d99d6d9d85c83f3d5029cec04abfddc54142044d39078799ba77fcec2715d41bbf4b114981fa697a8ee1afd9aa796733897e6d337ef1941e72d88631da5946

    • SSDEEP

      49152:nv+lL26AaNeWgPhlmVqvMQ7XSKOEoDkE2HBk/+F5oGd1LTHHB72eh2NT:nvuL26AaNeWgPhlmVqkQ7XSKroDKX

    Score
    10/10
    quasaroffice01spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables containing common artifacts observed in infostealers

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks