Overview

overview

10

Static

static

1

R0X-Built.bat

windows10-1703-x64

10

R0X-Built.bat

windows10-2004-x64

10

R0X-Built.bat

windows11-21h2-x64

10

Sharing

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General

  • Target

    R0X-Built.bat

  • Size

    326KB

  • Sample

    240502-zq16dafc91

  • MD5

    d967ead2d930328fe784be4e199cca49

  • SHA1

    cfe200ede38b0c10638d181d64ce202c58b01ba1

  • SHA256

    fcedeca6396c7c129f169f635085b84a0af4ab5d1043affe837c96640642230a

  • SHA512

    b63459d12140f400539b7233cf8854df6f2805f9f09a902df6fe20649b8af27be408ae667b4101444ce5b1848e4b37383a309c4962e55709c2fe11410a47ee71

  • SSDEEP

    6144:bx2lEdv93qPAK5WiwSRae50rX3cvmZi8pSOeAxqDpWStZ9qnR:b1dYPmmH5Tm88pnecqDp3AR

Score
10/10
quasarslaveexecutionpersistencespywaretrojan

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.bat

    • Size

      326KB

    • MD5

      d967ead2d930328fe784be4e199cca49

    • SHA1

      cfe200ede38b0c10638d181d64ce202c58b01ba1

    • SHA256

      fcedeca6396c7c129f169f635085b84a0af4ab5d1043affe837c96640642230a

    • SHA512

      b63459d12140f400539b7233cf8854df6f2805f9f09a902df6fe20649b8af27be408ae667b4101444ce5b1848e4b37383a309c4962e55709c2fe11410a47ee71

    • SSDEEP

      6144:bx2lEdv93qPAK5WiwSRae50rX3cvmZi8pSOeAxqDpWStZ9qnR:b1dYPmmH5Tm88pnecqDp3AR

    Score
    10/10
    quasarslaveexecutionspywaretrojanpersistence

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Sets service image path in registry

      persistence

    • 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

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Discovery

Query Registry

5
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks