Malware Analysis Report

2025-01-18 04:06

Sample ID 241027-xvpxssylcj
Target 62NOU_Client-built.exe
SHA256 1db4785c2e4ffdbc8a18149d6da1ae157cb234e1837e5aae5de5db799825b0fe
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

1db4785c2e4ffdbc8a18149d6da1ae157cb234e1837e5aae5de5db799825b0fe

Threat Level: Known bad

The file 62NOU_Client-built.exe was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar payload

Quasar RAT

Unsigned PE

Enumerates physical storage devices

Suspicious use of SendNotifyMessage

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-27 19:10

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

2024-10-27 19:10

Reported

2024-10-27 19:13

Platform

win7-20240708-en

Max time kernel

146s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

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\62NOU_Client-built.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp

Files

memory/2596-0-0x000007FEF5073000-0x000007FEF5074000-memory.dmp

memory/2596-1-0x0000000000330000-0x0000000000654000-memory.dmp

memory/2596-2-0x000007FEF5070000-0x000007FEF5A5C000-memory.dmp

memory/2596-3-0x000007FEF5073000-0x000007FEF5074000-memory.dmp

memory/2596-4-0x000007FEF5070000-0x000007FEF5A5C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-27 19:10

Reported

2024-10-27 19:13

Platform

win10v2004-20241007-en

Max time kernel

146s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

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\62NOU_Client-built.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\62NOU_Client-built.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 102.209.201.84.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 107.209.201.84.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
US 8.8.8.8:53 69.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 71.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
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
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:80 tcp
N/A 127.0.0.1:4782 tcp

Files

memory/4520-0-0x00007FFE84C83000-0x00007FFE84C85000-memory.dmp

memory/4520-1-0x0000000000400000-0x0000000000724000-memory.dmp

memory/4520-2-0x00007FFE84C80000-0x00007FFE85741000-memory.dmp

memory/4520-3-0x000000001BC20000-0x000000001BC70000-memory.dmp

memory/4520-4-0x000000001BD30000-0x000000001BDE2000-memory.dmp

memory/4520-5-0x00007FFE84C83000-0x00007FFE84C85000-memory.dmp

memory/4520-6-0x00007FFE84C80000-0x00007FFE85741000-memory.dmp