Overview

overview

10

Static

static

10

svchost.exe

windows7-x64

10

svchost.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    svchost.exe

  • Size

    3.1MB

  • Sample

    240602-rgg25sfb66

  • MD5

    26959ef393fbd309059d5e43041c4fb6

  • SHA1

    c3ce55ccf75e8f505bc5ff0b3013a9ae54904b42

  • SHA256

    900e126e8d56ee42be9bf08c083366e7b4d1ce8d4764ab70e8c45f1fa73a75cd

  • SHA512

    8f87ac4586e538e7adf399eda06c7565e628baab961b23c11f5f4cf24c1439014c7d83f9725d3494910227f78074d0bc2899b9e35040f04a9f53bcc15700f03d

  • SSDEEP

    49152:Ov8t62XlaSFNWPjljiFa2RoUYITUZ3larzLoGdOTHHB72eh2NT:OvA62XlaSFNWPjljiFXRoUYIK3G

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

5.tcp.eu.ngrok.io:10972

Mutex

b028487a-6e45-4b66-9e91-3d4903e32b6c

Attributes
  • encryption_key

    91137B461EAD4C8D03DB7ED595191162855E87F2

  • install_name

    DRIVER32.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    DRIVER32

  • subdirectory

    SYSWOW

Targets

    • Target

      svchost.exe

    • Size

      3.1MB

    • MD5

      26959ef393fbd309059d5e43041c4fb6

    • SHA1

      c3ce55ccf75e8f505bc5ff0b3013a9ae54904b42

    • SHA256

      900e126e8d56ee42be9bf08c083366e7b4d1ce8d4764ab70e8c45f1fa73a75cd

    • SHA512

      8f87ac4586e538e7adf399eda06c7565e628baab961b23c11f5f4cf24c1439014c7d83f9725d3494910227f78074d0bc2899b9e35040f04a9f53bcc15700f03d

    • SSDEEP

      49152:Ov8t62XlaSFNWPjljiFa2RoUYITUZ3larzLoGdOTHHB72eh2NT:OvA62XlaSFNWPjljiFXRoUYIK3G

    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.

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    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

2
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks