Malware Analysis Report

2025-01-18 04:12

Sample ID 241030-mgevkaspdk
Target f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN
SHA256 f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd
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

f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd

Threat Level: Known bad

The file f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar RAT

Quasar family

Quasar payload

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of SendNotifyMessage

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-30 10:25

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: behavioral1

Detonation Overview

Submitted

2024-10-30 10:25

Reported

2024-10-30 10:28

Platform

win7-20240903-en

Max time kernel

119s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.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\System.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\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\System.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2648 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe C:\Windows\system32\schtasks.exe
PID 2648 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe C:\Windows\system32\schtasks.exe
PID 2648 wrote to memory of 2704 N/A C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe C:\Windows\system32\schtasks.exe
PID 2648 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe C:\Users\Admin\AppData\Roaming\SubDir\System.exe
PID 2648 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe C:\Users\Admin\AppData\Roaming\SubDir\System.exe
PID 2648 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe C:\Users\Admin\AppData\Roaming\SubDir\System.exe
PID 2996 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Roaming\SubDir\System.exe C:\Windows\system32\schtasks.exe
PID 2996 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Roaming\SubDir\System.exe C:\Windows\system32\schtasks.exe
PID 2996 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Roaming\SubDir\System.exe C:\Windows\system32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe

"C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe"

C:\Windows\system32\schtasks.exe

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

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

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

C:\Windows\system32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 adnan1453.duckdns.org udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 adnan1453.duckdns.org udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp

Files

memory/2648-0-0x000007FEF5B33000-0x000007FEF5B34000-memory.dmp

memory/2648-1-0x0000000000290000-0x00000000005B4000-memory.dmp

memory/2648-2-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

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

MD5 fed9a2c4913364c73e04d7a2e818e5b0
SHA1 20cd6c16f76950da6cff2d638360cc4dd1959b96
SHA256 f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd
SHA512 1484733be349db43da7eba830e130b9f3c1071982ba128536c0920eaa491339bfa30c7659a8de41c4696c784d195123d966fc1542370f831cf593dde7c7b5ffe

memory/2996-10-0x0000000000C80000-0x0000000000FA4000-memory.dmp

memory/2996-9-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

memory/2996-11-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

memory/2648-8-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

memory/2996-12-0x000007FEF5B30000-0x000007FEF651C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-30 10:25

Reported

2024-10-30 10:28

Platform

win10v2004-20241007-en

Max time kernel

120s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.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\System.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\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\System.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe

"C:\Users\Admin\AppData\Local\Temp\f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bdN.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
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 adnan1453.duckdns.org udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 26.69.169.192.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 adnan1453.duckdns.org udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 adnan1453.duckdns.org tcp
US 192.169.69.26:7000 tcp

Files

memory/3480-0-0x00007FFC0DE63000-0x00007FFC0DE65000-memory.dmp

memory/3480-1-0x0000000000DC0000-0x00000000010E4000-memory.dmp

memory/3480-2-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

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

MD5 fed9a2c4913364c73e04d7a2e818e5b0
SHA1 20cd6c16f76950da6cff2d638360cc4dd1959b96
SHA256 f6de94ee28d98ffb171eca1c8716b4577a3546bac44e41596fe5e1c84d8970bd
SHA512 1484733be349db43da7eba830e130b9f3c1071982ba128536c0920eaa491339bfa30c7659a8de41c4696c784d195123d966fc1542370f831cf593dde7c7b5ffe

memory/3480-9-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

memory/5108-10-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

memory/5108-11-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp

memory/5108-12-0x000000001C600000-0x000000001C650000-memory.dmp

memory/5108-13-0x000000001C710000-0x000000001C7C2000-memory.dmp

memory/5108-14-0x00007FFC0DE60000-0x00007FFC0E921000-memory.dmp