Overview

overview

10

Static

static

3

thesigma.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    thesigma.exe

  • Size

    1.6MB

  • Sample

    240422-wny2fsec91

  • MD5

    7689437063c4eb4aab919fd25de6702d

  • SHA1

    36252a4df082fef51b2a1ab07f771e17860986d1

  • SHA256

    440271ab4c5959d7679fe00e6b223bcb8401a869e72d464cde8f880ff62f58da

  • SHA512

    13b874366ae7c25ba70f79cc3bd36af8668f3a0c750696c149a8cc15ee6cb850b002612ee519188910884b391b41667f1b072dac2d7a3a44a265f25201c22145

  • SSDEEP

    24576:0IjFRSPYlrMKgc6bN5WV63pDWWb6ohTLzeUtfjldLNvyvI:1jDaYlrM/NhLfdLNMI

Score
10/10
quasarslavespywaretrojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

C2

nugget1234-38628.portmap.host:38628

Mutex

$Sxr-AYc4tpo0KefMRW4CpM

Attributes
  • encryption_key

    O77hjXYiXiE656Wt67Lm

  • install_name

    System.exe

  • log_directory

    Logs

  • reconnect_delay

    1000

  • startup_key

    WindowsAudioHelper

  • subdirectory

    Windows

Targets

    • Target

      thesigma.exe

    • Size

      1.6MB

    • MD5

      7689437063c4eb4aab919fd25de6702d

    • SHA1

      36252a4df082fef51b2a1ab07f771e17860986d1

    • SHA256

      440271ab4c5959d7679fe00e6b223bcb8401a869e72d464cde8f880ff62f58da

    • SHA512

      13b874366ae7c25ba70f79cc3bd36af8668f3a0c750696c149a8cc15ee6cb850b002612ee519188910884b391b41667f1b072dac2d7a3a44a265f25201c22145

    • SSDEEP

      24576:0IjFRSPYlrMKgc6bN5WV63pDWWb6ohTLzeUtfjldLNvyvI:1jDaYlrM/NhLfdLNMI

    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

    • Looks up external IP address via web service

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

    behavioral1

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

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks