Malware Analysis Report

2025-01-18 04:31

Sample ID 231225-b2dmfsbhb9
Target 8eab0100f5130dc1cdbf838085b1b00c.bin
SHA256 d931c431122b880557b0029d8d5f687ed1a83e71c62fa48b257c9b59321cc250
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

d931c431122b880557b0029d8d5f687ed1a83e71c62fa48b257c9b59321cc250

Threat Level: Known bad

The file 8eab0100f5130dc1cdbf838085b1b00c.bin was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Unsigned PE

Enumerates physical storage devices

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-25 01:38

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

2023-12-25 01:38

Reported

2023-12-25 01:40

Platform

win7-20231215-en

Max time kernel

150s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.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\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe

"C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe"

Network

Country Destination Domain Proto
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp

Files

memory/2540-0-0x0000000001110000-0x0000000001434000-memory.dmp

memory/2540-1-0x000007FEF5380000-0x000007FEF5D6C000-memory.dmp

memory/2540-2-0x00000000002B0000-0x0000000000330000-memory.dmp

memory/2540-3-0x000007FEF5380000-0x000007FEF5D6C000-memory.dmp

memory/2540-4-0x00000000002B0000-0x0000000000330000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-25 01:38

Reported

2023-12-25 01:41

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.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\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe

"C:\Users\Admin\AppData\Local\Temp\bfe9444551e5017c82d53140c11c08c41fe9fd821cedbb959f388f2ca7946563.exe"

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
N/A 10.166.8.157:4782 tcp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 www.microsoft.com udp
US 92.123.241.137:80 www.microsoft.com tcp
US 92.123.241.137:80 www.microsoft.com tcp
US 8.8.8.8:53 137.241.123.92.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
N/A 10.166.8.157:4782 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 104.241.123.92.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.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 18.134.221.88.in-addr.arpa udp
N/A 10.166.8.157:4782 tcp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
N/A 10.166.8.157:4782 tcp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
N/A 10.166.8.157:4782 tcp
N/A 10.166.8.157:4782 tcp
US 8.8.8.8:53 27.73.42.20.in-addr.arpa udp
N/A 10.166.8.157:4782 tcp

Files

memory/1860-0-0x0000000000850000-0x0000000000B74000-memory.dmp

memory/1860-1-0x00007FF8E0DC0000-0x00007FF8E1881000-memory.dmp

memory/1860-2-0x000000001B770000-0x000000001B780000-memory.dmp

memory/1860-3-0x000000001C370000-0x000000001C3C0000-memory.dmp

memory/1860-4-0x000000001C480000-0x000000001C532000-memory.dmp

memory/1860-5-0x00007FF8E0DC0000-0x00007FF8E1881000-memory.dmp

memory/1860-6-0x000000001B770000-0x000000001B780000-memory.dmp