General

  • Target

    21b45cf293c8b1587d29f4a641b448ff3f817d6c99fa114841858208a0e2ae0a

  • Size

    2.0MB

  • Sample

    220323-jyv2bsedap

  • MD5

    c82df801338046f40c951adc0f3a18f1

  • SHA1

    c30e8ae474b0a4f8a81fe80a2f1c622dd1935479

  • SHA256

    21b45cf293c8b1587d29f4a641b448ff3f817d6c99fa114841858208a0e2ae0a

  • SHA512

    4554c619cfe8eca12cf0d053ad6ac25bda20df3889a073b50f39eac3478df97d11c79ad4efcb29ceadba082f276c41036a59c1bedfae4f9702076da6f08533f4

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

      21b45cf293c8b1587d29f4a641b448ff3f817d6c99fa114841858208a0e2ae0a

    • Size

      2.0MB

    • MD5

      c82df801338046f40c951adc0f3a18f1

    • SHA1

      c30e8ae474b0a4f8a81fe80a2f1c622dd1935479

    • SHA256

      21b45cf293c8b1587d29f4a641b448ff3f817d6c99fa114841858208a0e2ae0a

    • SHA512

      4554c619cfe8eca12cf0d053ad6ac25bda20df3889a073b50f39eac3478df97d11c79ad4efcb29ceadba082f276c41036a59c1bedfae4f9702076da6f08533f4

    • Azorult

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

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • suricata: ET MALWARE W32/Quasar 1.3/Venom RAT Connectivity Check 3

      suricata: ET MALWARE W32/Quasar 1.3/Venom RAT Connectivity Check 3

    • 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

    • 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 v6

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

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

2
T1120

Remote System Discovery

1
T1018

Tasks