Malware Analysis Report

2025-01-18 04:07

Sample ID 241103-avd4zazcmh
Target 7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178
SHA256 7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178
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: 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

7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178

Threat Level: Known bad

The file 7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178 was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar RAT

Quasar family

Quasar payload

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 00:31

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

2024-11-03 00:31

Reported

2024-11-03 00:34

Platform

win7-20240903-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.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\Windows\svchost.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\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Windows\svchost.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2272 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe C:\Windows\system32\schtasks.exe
PID 2272 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe C:\Windows\system32\schtasks.exe
PID 2272 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe C:\Windows\system32\schtasks.exe
PID 2272 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe C:\Users\Admin\AppData\Roaming\Windows\svchost.exe
PID 2272 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe C:\Users\Admin\AppData\Roaming\Windows\svchost.exe
PID 2272 wrote to memory of 1724 N/A C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe C:\Users\Admin\AppData\Roaming\Windows\svchost.exe
PID 1724 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\Windows\svchost.exe C:\Windows\system32\schtasks.exe
PID 1724 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\Windows\svchost.exe C:\Windows\system32\schtasks.exe
PID 1724 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\Windows\svchost.exe C:\Windows\system32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe

"C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe"

C:\Windows\system32\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\Windows\svchost.exe

"C:\Users\Admin\AppData\Roaming\Windows\svchost.exe"

C:\Windows\system32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp

Files

memory/2272-0-0x000007FEF5983000-0x000007FEF5984000-memory.dmp

memory/2272-1-0x0000000000820000-0x0000000000B44000-memory.dmp

memory/2272-2-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

C:\Users\Admin\AppData\Roaming\Windows\svchost.exe

MD5 878be87c49bd5b989fbf5464d225430a
SHA1 40149c47a14f317807fa3926318c6c975bba92d8
SHA256 7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178
SHA512 9756cb149de4fbc267b82dc0a6dc0fa1724091ce04676568c1874896d4876c79533f234b74566b676edd0a3fd1a609c9e8b9530ce60bb04ce1766befadf365fe

memory/1724-10-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

memory/1724-9-0x0000000001390000-0x00000000016B4000-memory.dmp

memory/1724-11-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

memory/2272-8-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

memory/1724-12-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 00:31

Reported

2024-11-03 00:34

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.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\Windows\svchost.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\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Windows\svchost.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe

"C:\Users\Admin\AppData\Local\Temp\7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\Windows\svchost.exe

"C:\Users\Admin\AppData\Roaming\Windows\svchost.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
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 26.69.169.192.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 34.144.22.2.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.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 26.35.223.20.in-addr.arpa udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 havucmarul.duckdns.org udp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 192.169.69.26:1604 havucmarul.duckdns.org tcp
US 8.8.8.8:53 udp

Files

memory/1976-0-0x00007FFA21443000-0x00007FFA21445000-memory.dmp

memory/1976-1-0x0000000000F80000-0x00000000012A4000-memory.dmp

memory/1976-2-0x00007FFA21440000-0x00007FFA21F01000-memory.dmp

C:\Users\Admin\AppData\Roaming\Windows\svchost.exe

MD5 878be87c49bd5b989fbf5464d225430a
SHA1 40149c47a14f317807fa3926318c6c975bba92d8
SHA256 7ed40bf99a35a45a00db1ad472ffbcce1758f5b92491378b89f0559170d8f178
SHA512 9756cb149de4fbc267b82dc0a6dc0fa1724091ce04676568c1874896d4876c79533f234b74566b676edd0a3fd1a609c9e8b9530ce60bb04ce1766befadf365fe

memory/1756-9-0x00007FFA21440000-0x00007FFA21F01000-memory.dmp

memory/1976-10-0x00007FFA21440000-0x00007FFA21F01000-memory.dmp

memory/1756-11-0x000000001D250000-0x000000001D2A0000-memory.dmp

memory/1756-12-0x000000001D360000-0x000000001D412000-memory.dmp

memory/1756-13-0x00007FFA21440000-0x00007FFA21F01000-memory.dmp