Malware Analysis Report

2025-01-18 04:18

Sample ID 240104-yzv52sbbb7
Target L.exe
SHA256 3e0d4f245349526b3213f2790efab2e61f18d0266f972e244c5813f839f1dad7
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

3e0d4f245349526b3213f2790efab2e61f18d0266f972e244c5813f839f1dad7

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar RAT

Quasar family

Quasar payload

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-04 20:13

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

2024-01-04 20:13

Reported

2024-01-04 20:18

Platform

win10v2004-20231215-en

Max time kernel

208s

Max time network

208s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\L.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\L.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\L.exe N/A

Processes

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

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

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 20.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 19.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
HU 89.134.3.9:1441 tcp
GB 104.91.71.134:80 tcp
US 8.8.8.8:53 udp
GB 96.17.179.43:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 138.91.171.81:80 tcp
GB 96.17.179.43:80 tcp
GB 96.17.179.43:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 52.111.227.14:443 tcp
N/A 204.79.197.203:443 tcp
US 8.8.8.8:53 udp
US 192.229.221.95:80 tcp
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 183.1.37.23.in-addr.arpa udp
N/A 20.54.110.119:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 104.91.71.140:80 tcp
N/A 104.91.71.140:80 tcp
N/A 104.91.71.140:80 tcp
N/A 104.91.71.140:80 tcp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.143:80 tcp
US 8.8.8.8:53 udp
GB 104.91.71.134:80 tcp
GB 104.91.71.134:80 tcp
US 8.8.8.8:53 udp
GB 104.91.71.134:80 tcp
GB 87.248.205.0:80 tcp
GB 87.248.205.0:80 tcp
HU 89.134.3.9:1441 tcp
GB 104.91.71.134:80 tcp
US 8.8.8.8:53 udp
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 udp
N/A 20.42.65.88:443 tcp
US 192.229.221.95:80 tcp
US 8.8.8.8:53 udp
HU 89.134.3.9:1441 tcp
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 udp
GB 104.91.71.134:80 tcp
US 8.8.8.8:53 udp
HU 89.134.3.9:1441 tcp

Files

memory/4776-0-0x00000000007C0000-0x0000000000AE4000-memory.dmp

memory/4776-1-0x00007FFFA49D0000-0x00007FFFA5491000-memory.dmp

memory/4776-2-0x0000000002C30000-0x0000000002C40000-memory.dmp

memory/4776-3-0x000000001C1E0000-0x000000001C230000-memory.dmp

memory/4776-4-0x000000001C2F0000-0x000000001C3A2000-memory.dmp

memory/4776-5-0x00007FFFA49D0000-0x00007FFFA5491000-memory.dmp

memory/4776-6-0x0000000002C30000-0x0000000002C40000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-04 20:13

Reported

2024-01-04 20:17

Platform

win11-20231222-en

Max time kernel

124s

Max time network

142s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\L.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\L.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\L.exe N/A

Processes

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

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

Network

Country Destination Domain Proto
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
HU 89.134.3.9:1441 tcp
N/A 20.223.35.26:443 tcp
HU 89.134.3.9:1441 tcp
GB 96.17.179.43:80 tcp
GB 96.17.179.43:80 tcp
N/A 20.223.36.55:443 tcp
HU 89.134.3.9:1441 tcp
HU 89.134.3.9:1441 tcp
N/A 52.111.227.14:443 tcp
US 8.8.8.8:53 udp
HU 89.134.3.9:1441 tcp
US 8.8.8.8:53 udp
N/A 20.103.156.88:443 tcp

Files

memory/3700-0-0x0000000000170000-0x0000000000494000-memory.dmp

memory/3700-1-0x00007FFCD0BD0000-0x00007FFCD1692000-memory.dmp

memory/3700-2-0x0000000000DC0000-0x0000000000DD0000-memory.dmp

memory/3700-3-0x000000001BEE0000-0x000000001BF30000-memory.dmp

memory/3700-4-0x000000001BFF0000-0x000000001C0A2000-memory.dmp

memory/3700-5-0x00007FFCD0BD0000-0x00007FFCD1692000-memory.dmp

memory/3700-6-0x0000000000DC0000-0x0000000000DD0000-memory.dmp