Overview

overview

10

Static

static

1

ren_installer.exe.vbs

windows7-x64

10

ren_installer.exe.vbs

windows10-2004-x64

10

Sharing

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General

  • Target

    ren_installer.exe.vbs

  • Size

    4.4MB

  • Sample

    230529-mkzn5sbg9x

  • MD5

    536ac26b63fe850c37ba9bed94792656

  • SHA1

    2ed38ec15f4d9c2f3f62b9e76f7e867708be52a2

  • SHA256

    ecb6ddd0b697ef6d270088b45d347254cc79cda47ad7bde0b02ac50f4b668ea0

  • SHA512

    95eda90758885dddc514cf7a71bb186fa566827d1dceeee1dafb554dc6081fb3f794b276612154679df3c86c1537114b9003543420bdab761d2eeb04e1b47900

  • SSDEEP

    24576:NLSIeHVl7qq8Kpz3e4WlOnNHYadMpdJp2n1WT1L4whffYob7zdqx0nllmZw3/PLe:RYp7SThIEHcsleGEZZAn7i4Ch

Score
10/10
quasarreservicesspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

ReServices

C2

185.65.134.175:55498

Mutex

86e242cc-399d-4e30-a743-e89f0418f106

Attributes
  • encryption_key

    B451C26057A2AEFC83990793720D2316EA48C49A

  • install_name

    renservice.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    renservice

  • subdirectory

    servicerenk

Targets

    • Target

      ren_installer.exe.vbs

    • Size

      4.4MB

    • MD5

      536ac26b63fe850c37ba9bed94792656

    • SHA1

      2ed38ec15f4d9c2f3f62b9e76f7e867708be52a2

    • SHA256

      ecb6ddd0b697ef6d270088b45d347254cc79cda47ad7bde0b02ac50f4b668ea0

    • SHA512

      95eda90758885dddc514cf7a71bb186fa566827d1dceeee1dafb554dc6081fb3f794b276612154679df3c86c1537114b9003543420bdab761d2eeb04e1b47900

    • SSDEEP

      24576:NLSIeHVl7qq8Kpz3e4WlOnNHYadMpdJp2n1WT1L4whffYob7zdqx0nllmZw3/PLe:RYp7SThIEHcsleGEZZAn7i4Ch

    Score
    10/10
    quasarreservicesspywaretrojan

    • 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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks