Overview

overview

10

Static

static

10

R0X-Built.exe

windows10-1703-x64

10

R0X-Built.exe

windows10-2004-x64

10

R0X-Built.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    R0X-Built.exe

  • Size

    409KB

  • Sample

    240502-ztj19sfd3z

  • MD5

    a0f5aa5764c4f66eee82f857f9f447b6

  • SHA1

    3c3a780d020cb3eb3088223443fe813abb95dccd

  • SHA256

    43c6b9b6c241dbd6ad1bde7980026235373374d5e836fb6c794354a15e678ef3

  • SHA512

    458c03ae490e409598b8e9e89911b0757fb61411fbc45a60ecefed3c13d0fc96b7bc205afe1fb3e0f7585eb163f102754ec9259691eca1bfa00b028f74eb8384

  • SSDEEP

    6144:RMX2pJAJcC0B61K6qZ1fQ57P/EwXhb4azmosb+lfXdOIFyoOOfTA3pwF:lpyJcC+uK6qZ1G8QJjbfNOSOObA3pwF

Score
10/10
quasarslavespywaretrojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

C2

even-lemon.gl.at.ply.gg:33587

Mutex

$Sxr-3vDee7FzoJnhqjuE3n

Attributes
  • encryption_key

    KaNwItdY6wlv5nCN4prL

  • install_name

    $srr-powershell.exe

  • log_directory

    Logs

  • reconnect_delay

    1000

  • startup_key

    $srr-powershell

  • subdirectory

    Windows

Targets

    • Target

      R0X-Built.exe

    • Size

      409KB

    • MD5

      a0f5aa5764c4f66eee82f857f9f447b6

    • SHA1

      3c3a780d020cb3eb3088223443fe813abb95dccd

    • SHA256

      43c6b9b6c241dbd6ad1bde7980026235373374d5e836fb6c794354a15e678ef3

    • SHA512

      458c03ae490e409598b8e9e89911b0757fb61411fbc45a60ecefed3c13d0fc96b7bc205afe1fb3e0f7585eb163f102754ec9259691eca1bfa00b028f74eb8384

    • SSDEEP

      6144:RMX2pJAJcC0B61K6qZ1fQ57P/EwXhb4azmosb+lfXdOIFyoOOfTA3pwF:lpyJcC+uK6qZ1G8QJjbfNOSOObA3pwF

    Score
    10/10
    quasarslavespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2behavioral3

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

4
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks