Overview

overview

10

Static

static

1

New1.bat

windows10-2004-x64

10

New1.bat

windows11-21h2-x64

10

Sharing

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General

  • Target

    New1.bat

  • Size

    1002KB

  • Sample

    240527-3g3vdsea7w

  • MD5

    f6d5bfaee8a55ff72c7b453fda066d62

  • SHA1

    7d737d53013990e5d05076b7206e43eb4793fc7f

  • SHA256

    3ff8b6a041a96625d730dfe770eb6e84be8ce99fc50a0027724e48394f053308

  • SHA512

    e300c15bef9e898e7abd4ecf6759c0e60829e8d9b507e257359b0c0342c56d56adf7924c76ffbbee4c42e1b1ea229b7032d177849d2668720090780190b7f284

  • SSDEEP

    12288:NzPPeJOTZMGuIl99I2FxGwvYXDSeengmfn5tKvy0H5JbcGfRZIJZ32hxnQxCGaF9:NDeYum99IGP8f2rRO5JFPIJZ8GaF8XmB

Score
10/10
quasarvideoexecutionspywaretrojan

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

quasar

Version

3.1.5

Botnet

Video

C2

runderscore00-25501.portmap.host:25501

Mutex

$Sxr-oWTh3ZS9htfe80iIl5

Attributes
  • encryption_key

    zK8u0rpHf4TJzGf65Flt

  • install_name

    Win11.exe

  • log_directory

    $sxr-Logs

  • reconnect_delay

    3000

  • startup_key

    Windows 11 Boot

  • subdirectory

    Win11

Targets

    • Target

      New1.bat

    • Size

      1002KB

    • MD5

      f6d5bfaee8a55ff72c7b453fda066d62

    • SHA1

      7d737d53013990e5d05076b7206e43eb4793fc7f

    • SHA256

      3ff8b6a041a96625d730dfe770eb6e84be8ce99fc50a0027724e48394f053308

    • SHA512

      e300c15bef9e898e7abd4ecf6759c0e60829e8d9b507e257359b0c0342c56d56adf7924c76ffbbee4c42e1b1ea229b7032d177849d2668720090780190b7f284

    • SSDEEP

      12288:NzPPeJOTZMGuIl99I2FxGwvYXDSeengmfn5tKvy0H5JbcGfRZIJZ32hxnQxCGaF9:NDeYum99IGP8f2rRO5JFPIJZ8GaF8XmB

    Score
    10/10
    quasarvideoexecutionspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Checks BIOS information in registry

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

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

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

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks