Malware Analysis Report

2024-10-19 08:35

Sample ID 240728-tlhkkswand
Target 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3
SHA256 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3
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

1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3

Threat Level: Known bad

The file 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3 was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar family

Quasar RAT

Executes dropped EXE

Unsigned PE

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-28 16:08

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

2024-07-28 16:08

Reported

2024-07-28 16:11

Platform

win10v2004-20240704-en

Max time kernel

149s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe"

Signatures

Quasar RAT

trojan spyware 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\browser\edge.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\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\browser\edge.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe

"C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\browser\edge.exe

"C:\Users\Admin\AppData\Roaming\browser\edge.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 18.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
DE 193.42.11.9:4329 tcp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 9.11.42.193.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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
US 8.8.8.8:53 28.173.189.20.in-addr.arpa udp

Files

memory/2284-0-0x00007FFA55E33000-0x00007FFA55E35000-memory.dmp

memory/2284-1-0x00000000001A0000-0x00000000004C4000-memory.dmp

memory/2284-2-0x00007FFA55E30000-0x00007FFA568F1000-memory.dmp

C:\Users\Admin\AppData\Roaming\browser\edge.exe

MD5 e3e1f7fa42dd68f410bb885f0aefe5e3
SHA1 d51edc519d86a11e6533cd4cac8f190dd3f7d4bb
SHA256 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3
SHA512 92ac0379074366a4dbb9235d8c61935be6d8086629611dbcdecdaf680a0a8636f7810d4f6394dbdee5b1e463842284ab9855534da4627677965557e8eb609aa3

memory/2344-8-0x00007FFA55E30000-0x00007FFA568F1000-memory.dmp

memory/2284-9-0x00007FFA55E30000-0x00007FFA568F1000-memory.dmp

memory/2344-10-0x00007FFA55E30000-0x00007FFA568F1000-memory.dmp

memory/2344-11-0x000000001BCF0000-0x000000001BD40000-memory.dmp

memory/2344-12-0x000000001BE00000-0x000000001BEB2000-memory.dmp

memory/2344-15-0x0000000002B00000-0x0000000002B12000-memory.dmp

memory/2344-16-0x000000001BD80000-0x000000001BDBC000-memory.dmp

memory/2344-17-0x00007FFA55E30000-0x00007FFA568F1000-memory.dmp

memory/2344-18-0x00007FFA55E30000-0x00007FFA568F1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-28 16:08

Reported

2024-07-28 16:11

Platform

win11-20240709-en

Max time kernel

145s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe"

Signatures

Quasar RAT

trojan spyware 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\browser\edge.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\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\browser\edge.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe

"C:\Users\Admin\AppData\Local\Temp\1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

C:\Users\Admin\AppData\Roaming\browser\edge.exe

"C:\Users\Admin\AppData\Roaming\browser\edge.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
DE 193.42.11.9:4329 tcp
US 8.8.8.8:53 9.11.42.193.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
DE 195.201.57.90:443 ipwho.is tcp

Files

memory/4816-0-0x00007FF9FE7D3000-0x00007FF9FE7D5000-memory.dmp

memory/4816-1-0x0000000000B10000-0x0000000000E34000-memory.dmp

memory/4816-2-0x00007FF9FE7D0000-0x00007FF9FF292000-memory.dmp

C:\Users\Admin\AppData\Roaming\browser\edge.exe

MD5 e3e1f7fa42dd68f410bb885f0aefe5e3
SHA1 d51edc519d86a11e6533cd4cac8f190dd3f7d4bb
SHA256 1d686b05f745875e28939abe357baedd169b59f5a0d8825b602fd803a6303ba3
SHA512 92ac0379074366a4dbb9235d8c61935be6d8086629611dbcdecdaf680a0a8636f7810d4f6394dbdee5b1e463842284ab9855534da4627677965557e8eb609aa3

memory/2424-8-0x00007FF9FE7D0000-0x00007FF9FF292000-memory.dmp

memory/4816-9-0x00007FF9FE7D0000-0x00007FF9FF292000-memory.dmp

memory/2424-10-0x00007FF9FE7D0000-0x00007FF9FF292000-memory.dmp

memory/2424-11-0x000000001C890000-0x000000001C8E0000-memory.dmp

memory/2424-12-0x000000001C9A0000-0x000000001CA52000-memory.dmp

memory/2424-15-0x000000001C910000-0x000000001C922000-memory.dmp

memory/2424-16-0x000000001D0B0000-0x000000001D0EC000-memory.dmp

memory/2424-17-0x00007FF9FE7D0000-0x00007FF9FF292000-memory.dmp

memory/2424-18-0x00007FF9FE7D0000-0x00007FF9FF292000-memory.dmp