Malware Analysis Report

2025-04-14 04:54

Sample ID 241213-l55v8avmat
Target testingfile.exe
SHA256 cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77
Tags
office04 quasar spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SendNotifyMessage

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-13 10:07

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: behavioral1

Detonation Overview

Submitted

2024-12-13 10:07

Reported

2024-12-13 10:10

Platform

win7-20240903-en

Max time kernel

146s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\testingfile.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

Enumerates physical storage devices

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\testingfile.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A 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\testingfile.exe

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

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "wod2" /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 "wod2" /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 testinghigger-42471.portmap.host udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp

Files

memory/2320-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

memory/2320-1-0x0000000000080000-0x00000000003A4000-memory.dmp

memory/2320-2-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

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

MD5 4489c3282400ad9e96ea5ca7c28e6369
SHA1 91a2016778cce0e880636d236efca38cf0a7713d
SHA256 cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77
SHA512 adaeab8aa666057ff008e86f96ae6b9a36ff2f276fdd49f6663c300357f3dc10f59fac7700bb385aa35887918a830e18bddaa41b3305d913566f58aa428a72b0

memory/2396-8-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

memory/2320-9-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

memory/2396-10-0x0000000000EF0000-0x0000000001214000-memory.dmp

memory/2396-11-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

memory/2396-12-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-13 10:07

Reported

2024-12-13 10:10

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\testingfile.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

Enumerates physical storage devices

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\testingfile.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A 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\testingfile.exe

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "wod2" /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 "wod2" /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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 testinghigger-42471.portmap.host udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 testinghigger-42471.portmap.host udp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
DE 193.161.193.99:42471 testinghigger-42471.portmap.host tcp
US 8.8.8.8:53 udp

Files

memory/2204-0-0x00007FFF30AC3000-0x00007FFF30AC5000-memory.dmp

memory/2204-1-0x0000000000EA0000-0x00000000011C4000-memory.dmp

memory/2204-2-0x00007FFF30AC0000-0x00007FFF31581000-memory.dmp

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

MD5 4489c3282400ad9e96ea5ca7c28e6369
SHA1 91a2016778cce0e880636d236efca38cf0a7713d
SHA256 cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77
SHA512 adaeab8aa666057ff008e86f96ae6b9a36ff2f276fdd49f6663c300357f3dc10f59fac7700bb385aa35887918a830e18bddaa41b3305d913566f58aa428a72b0

memory/2204-10-0x00007FFF30AC0000-0x00007FFF31581000-memory.dmp

memory/4972-9-0x00007FFF30AC0000-0x00007FFF31581000-memory.dmp

memory/4972-11-0x00007FFF30AC0000-0x00007FFF31581000-memory.dmp

memory/4972-12-0x000000001C9E0000-0x000000001CA30000-memory.dmp

memory/4972-13-0x000000001CAF0000-0x000000001CBA2000-memory.dmp

memory/4972-14-0x00007FFF30AC0000-0x00007FFF31581000-memory.dmp