Overview

overview

10

Static

static

10

Client-built.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240627-18pqqstgqb

  • MD5

    dc2017d875a294af1881e553b11b8717

  • SHA1

    40b4ab857db967b61d4708943f157f248c49b844

  • SHA256

    5605c73c546e1dc58135d9f966e449d4acf0e791f4095989f4b746522e726f27

  • SHA512

    faf2982b82dade07c2c88425bdc8f77ee4ee6e28d850f612db7e370547afd2c6337b6cc5b0087685a199e1e83d6666fcaae0109aa89bf6ea4ca2d150b9972262

  • SSDEEP

    49152:PvEt62XlaSFNWPjljiFa2RoUYIkdyRfDKoGdf+THHB72eh2NT:PvY62XlaSFNWPjljiFXRoUYIkdyRfm

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

0.tcp.eu.ngrok.io:12165

Mutex

fbfe2df1-f4ca-4d07-920f-4075f27bc8a1

Attributes
  • encryption_key

    B22432E943AA88394E5F97387369DCA7D8B67608

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    system 32

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      dc2017d875a294af1881e553b11b8717

    • SHA1

      40b4ab857db967b61d4708943f157f248c49b844

    • SHA256

      5605c73c546e1dc58135d9f966e449d4acf0e791f4095989f4b746522e726f27

    • SHA512

      faf2982b82dade07c2c88425bdc8f77ee4ee6e28d850f612db7e370547afd2c6337b6cc5b0087685a199e1e83d6666fcaae0109aa89bf6ea4ca2d150b9972262

    • SSDEEP

      49152:PvEt62XlaSFNWPjljiFa2RoUYIkdyRfDKoGdf+THHB72eh2NT:PvY62XlaSFNWPjljiFXRoUYIkdyRfm

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks