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

    240328-x1en1sfa49

  • MD5

    bb7a42f4595499e4cd801eacb252cae8

  • SHA1

    bd19e59cd8203d29fa232ea026189d245e07e886

  • SHA256

    f1360aa4d9adeff9ccff753f2996be1b827d7bc3a79549cc6635346ce3eb1da2

  • SHA512

    29f160c2a84e8b3dd86ba62e65e8d91d782f7b347900eb72198012af40353986e2ce01a85cbf288a6146192cdb12450e0ec72024a675509ee6c9e6d089bb2449

  • SSDEEP

    49152:mvRuf2NUaNmwzPWlvdaKM7ZxTwkQRJ6FbR3LoGd/ITHHB72eh2NT:mvsf2NUaNmwzPWlvdaB7ZxTwkQRJ6X

Score
10/10
quasarslavespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Slave

C2

140.238.91.110:38899

uk2.localto.net:38899:38899
Mutex

276d9dc6-b19c-4958-8ac3-89586bd3b515

Attributes
  • encryption_key

    ABCF70C37D1A79A01712038122D1532DF20DF72A

  • install_name

    Client.exe

  • log_directory

    Error Logs

  • reconnect_delay

    3000

  • startup_key

    WOS64

  • subdirectory

    Windows

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      bb7a42f4595499e4cd801eacb252cae8

    • SHA1

      bd19e59cd8203d29fa232ea026189d245e07e886

    • SHA256

      f1360aa4d9adeff9ccff753f2996be1b827d7bc3a79549cc6635346ce3eb1da2

    • SHA512

      29f160c2a84e8b3dd86ba62e65e8d91d782f7b347900eb72198012af40353986e2ce01a85cbf288a6146192cdb12450e0ec72024a675509ee6c9e6d089bb2449

    • SSDEEP

      49152:mvRuf2NUaNmwzPWlvdaKM7ZxTwkQRJ6FbR3LoGd/ITHHB72eh2NT:mvsf2NUaNmwzPWlvdaB7ZxTwkQRJ6X

    Score
    10/10
    quasarslavespywaretrojan

    • 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

    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

Impact

Resource Development

Reconnaissance

Tasks