General

  • Target

    4fd443f6964f2cb310c2311c5141181f1d117edbf6d6eefaebced5088d2d9c53

  • Size

    2.0MB

  • Sample

    240502-1m49asfg2t

  • MD5

    2f23c714782f98b0d627093a6a55b0e4

  • SHA1

    c41f71f4f7deb065e36de6dfbbb850e7b854b759

  • SHA256

    4fd443f6964f2cb310c2311c5141181f1d117edbf6d6eefaebced5088d2d9c53

  • SHA512

    531c736f93f3aab31020dd6c1da54ab0392e03342acfb690a82ef69a8cb6a222365c4605fa8c43a2d36a3e6a61bd7a47727338760ec4f135292ab23d0fe3def1

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYE:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y2

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

EbayProfiles

C2

5.8.88.191:443

sockartek.icu:443

Mutex

QSR_MUTEX_0kBRNrRz5TDLEQouI0

Attributes
  • encryption_key

    MWhG6wsClMX8aJM2CVXT

  • install_name

    winsock.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    win defender run

  • subdirectory

    SubDir

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

Targets

    • Target

      4fd443f6964f2cb310c2311c5141181f1d117edbf6d6eefaebced5088d2d9c53

    • Size

      2.0MB

    • MD5

      2f23c714782f98b0d627093a6a55b0e4

    • SHA1

      c41f71f4f7deb065e36de6dfbbb850e7b854b759

    • SHA256

      4fd443f6964f2cb310c2311c5141181f1d117edbf6d6eefaebced5088d2d9c53

    • SHA512

      531c736f93f3aab31020dd6c1da54ab0392e03342acfb690a82ef69a8cb6a222365c4605fa8c43a2d36a3e6a61bd7a47727338760ec4f135292ab23d0fe3def1

    • SSDEEP

      24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYE:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9Y2

    • Azorult

      An information stealer that was first discovered in 2016, targeting browsing history and passwords.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

2
T1120

Remote System Discovery

1
T1018

Tasks