Overview

overview

10

Static

static

10

cc.exe

windows10-2004-x64

10

cc.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    cc.exe
  • Size 3.1MB
  • Sample260725-pvwfksxtdv
  • SHA256 5ec8ce33933ab9374f9bc7d830cca7bb7633c7f487310a254f7344714fadc839
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04adwarediscoveryexecutionpersistenceprivilege_escalationspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 192.168.0.228:4782

Mutex

  • abf5883b-f1d5-415f-9b2f-7d8b10de1a08

Attributes
  • encryption_key

    3BE4283C3D339995D4C093A83B4F7A364D57206B

  • install_name

    scvhost.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    scvhost.exe

  • subdirectory

    scvhost

Targets

    • Target
      cc.exe
    • Size 3.1MB
    • SHA256 5ec8ce33933ab9374f9bc7d830cca7bb7633c7f487310a254f7344714fadc839
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    adwareoffice04discoveryexecutionquasarpersistenceprivilege_escalationspywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Modifies system executable filetype association

      persistence

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Event Triggered Execution

2
T1546

Change Default File Association

1
T1546.001

Component Object Model Hijacking

1
T1546.015

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Event Triggered Execution

2
T1546

Change Default File Association

1
T1546.001

Component Object Model Hijacking

1
T1546.015

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

3
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks