General

  • Target

    Loader.bat

  • Size

    1KB

  • Sample

    240702-2vbgmatglh

  • MD5

    cbce3af3a092d1666c4cd71eb154f67e

  • SHA1

    48330f2c01816272bc779509c8f1b4ab52a0db3b

  • SHA256

    3945619c240ea627ece0b2e090f073d71c5a66a046d64ce84cb6177fa52bd6ce

  • SHA512

    91cfe541598ffb3eaa4c1f8bdc0e82401bf3d3024d829a3d61c39c5e072c0c8b1c6554fc39fd9fcbba9b5894bec0dddfb07db509dd9a0834d148ceb008bd55f5

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

xworm

C2

super-nearest.gl.at.ply.gg:17835

best-bird.gl.at.ply.gg:27196

wiz.bounceme.net:6000

aes.plain

Extracted

Family

asyncrat

Botnet

Default

C2

finally-grande.gl.at.ply.gg:25844

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

quasar

Version

3.1.5

Botnet

Slave

C2

stop-largely.gl.at.ply.gg:27116

Mutex

$Sxr-kl1r656AGsPQksTmi8

Attributes
  • encryption_key

    CjDCAPF1JiLswgFipef3

  • install_name

    $77Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Start-Up Application

  • subdirectory

    $77

Targets

    • Target

      Loader.bat

    • Size

      1KB

    • MD5

      cbce3af3a092d1666c4cd71eb154f67e

    • SHA1

      48330f2c01816272bc779509c8f1b4ab52a0db3b

    • SHA256

      3945619c240ea627ece0b2e090f073d71c5a66a046d64ce84cb6177fa52bd6ce

    • SHA512

      91cfe541598ffb3eaa4c1f8bdc0e82401bf3d3024d829a3d61c39c5e072c0c8b1c6554fc39fd9fcbba9b5894bec0dddfb07db509dd9a0834d148ceb008bd55f5

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Detect Xworm Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Async RAT payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • 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

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Tasks