Overview

overview

10

Static

static

19311fa543...f0.exe

windows7_x64

10

19311fa543...f0.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    19311fa543ef6d6eca7d344c9eb1903634ed126452f5cb824867e5aed0ee86f0

  • Size

    3.8MB

  • Sample

    220222-r9lwssabd6

  • MD5

    3b27377743fc96fe8ddc6aa68ba64366

  • SHA1

    b1391a4a9d29246c6e8f758024a91aeb031f11cb

  • SHA256

    19311fa543ef6d6eca7d344c9eb1903634ed126452f5cb824867e5aed0ee86f0

  • SHA512

    d58f3037620ee4f84b392a10be9738d7f31f93fac0ae89f6ec40f3825e598b123aab7b7d20c2bff83600cb727a2550691bf3995cbc704472dfc52ed26807bb68

Score
10/10
quasarsys32persistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Sys32

C2

184.105.238.80:4782

Mutex

QSR_MUTEX_IBj5UlCqsXE96x1jgF

Attributes
  • encryption_key

    mZfAUjkKkw53M41DGa6d

  • install_name

    System32.exe

  • log_directory

    Sys32Logs

  • reconnect_delay

    3000

  • startup_key

    System32

  • subdirectory

    SubDir

Targets

    • Target

      19311fa543ef6d6eca7d344c9eb1903634ed126452f5cb824867e5aed0ee86f0

    • Size

      3.8MB

    • MD5

      3b27377743fc96fe8ddc6aa68ba64366

    • SHA1

      b1391a4a9d29246c6e8f758024a91aeb031f11cb

    • SHA256

      19311fa543ef6d6eca7d344c9eb1903634ed126452f5cb824867e5aed0ee86f0

    • SHA512

      d58f3037620ee4f84b392a10be9738d7f31f93fac0ae89f6ec40f3825e598b123aab7b7d20c2bff83600cb727a2550691bf3995cbc704472dfc52ed26807bb68

    Score
    10/10
    quasarsys32persistencespywaretrojan

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks