Malware Analysis Report

2025-01-18 04:11

Sample ID 241029-3erz4ssakh
Target PermWoofer.exe
SHA256 03bc2c340a1081e1521a5c4b92c38756f4de234ac1b1a578556d83737972e343
Tags
quasar office04 spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

03bc2c340a1081e1521a5c4b92c38756f4de234ac1b1a578556d83737972e343

Threat Level: Known bad

The file PermWoofer.exe was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar RAT

Quasar family

Quasar payload

Executes dropped EXE

Unsigned PE

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-29 23:25

Signatures

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-29 23:25

Reported

2024-10-29 23:28

Platform

win10v2004-20241007-en

Max time kernel

134s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe

"C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "ahhaa" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "ahhaa" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
N/A 192.168.1.28:4782 tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
N/A 192.168.1.28:4782 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 99.209.201.84.in-addr.arpa udp
N/A 192.168.1.28:4782 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
N/A 192.168.1.28:4782 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
N/A 192.168.1.28:4782 tcp
N/A 192.168.1.28:4782 tcp

Files

memory/4264-0-0x00007FFAF29E3000-0x00007FFAF29E5000-memory.dmp

memory/4264-1-0x0000000000C00000-0x0000000000F24000-memory.dmp

memory/4264-2-0x00007FFAF29E0000-0x00007FFAF34A1000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5 b4ac68d3c6cc89ae97e519b9a7241bba
SHA1 ced8a4dec2238bc5f2b7ca9ef9fdac0a6cd9108f
SHA256 03bc2c340a1081e1521a5c4b92c38756f4de234ac1b1a578556d83737972e343
SHA512 8870741c08574945ea43055e6031394af96290348e4e55d3570f937020c49020fc7d61517d9ab9dd42fc65066ba113cb8a31f2d45cff7f7301f8e865d52aa1d5

memory/4264-9-0x00007FFAF29E0000-0x00007FFAF34A1000-memory.dmp

memory/1996-10-0x00007FFAF29E0000-0x00007FFAF34A1000-memory.dmp

memory/1996-11-0x00007FFAF29E0000-0x00007FFAF34A1000-memory.dmp

memory/1996-12-0x000000001C4B0000-0x000000001C500000-memory.dmp

memory/1996-13-0x000000001C5C0000-0x000000001C672000-memory.dmp

memory/1996-14-0x00007FFAF29E0000-0x00007FFAF34A1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-29 23:25

Reported

2024-10-29 23:28

Platform

win7-20240903-en

Max time kernel

126s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe

"C:\Users\Admin\AppData\Local\Temp\PermWoofer.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "ahhaa" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "ahhaa" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
N/A 192.168.1.28:4782 tcp
N/A 192.168.1.28:4782 tcp
N/A 192.168.1.28:4782 tcp
N/A 192.168.1.28:4782 tcp
N/A 192.168.1.28:4782 tcp
N/A 192.168.1.28:4782 tcp

Files

memory/548-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

memory/548-1-0x0000000001120000-0x0000000001444000-memory.dmp

memory/548-2-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5 b4ac68d3c6cc89ae97e519b9a7241bba
SHA1 ced8a4dec2238bc5f2b7ca9ef9fdac0a6cd9108f
SHA256 03bc2c340a1081e1521a5c4b92c38756f4de234ac1b1a578556d83737972e343
SHA512 8870741c08574945ea43055e6031394af96290348e4e55d3570f937020c49020fc7d61517d9ab9dd42fc65066ba113cb8a31f2d45cff7f7301f8e865d52aa1d5

memory/2012-8-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

memory/2012-10-0x00000000012E0000-0x0000000001604000-memory.dmp

memory/548-9-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

memory/2012-11-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

memory/2012-12-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp