Malware Analysis Report

2024-10-23 21:24

Sample ID 240805-e1aqys1arg
Target Client-built.exe
SHA256 01b172d69a0ce6bdf3f29f89b58e18474d07d7c57f22ac4633fdb2cfa794cb6c
Tags
quasar office04 discovery spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

01b172d69a0ce6bdf3f29f89b58e18474d07d7c57f22ac4633fdb2cfa794cb6c

Threat Level: Known bad

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

Malicious Activity Summary

quasar office04 discovery spyware trojan

Quasar family

Quasar RAT

Quasar payload

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Runs ping.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-05 04:23

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: behavioral2

Detonation Overview

Submitted

2024-08-05 04:23

Reported

2024-08-05 04:26

Platform

win10v2004-20240802-en

Max time kernel

95s

Max time network

97s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4912 wrote to memory of 1060 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\cmd.exe
PID 4912 wrote to memory of 1060 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\cmd.exe
PID 1060 wrote to memory of 964 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\chcp.com
PID 1060 wrote to memory of 964 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\chcp.com
PID 1060 wrote to memory of 3124 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 1060 wrote to memory of 3124 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE

Processes

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

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

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x45c 0x48c

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KuBhliT3xyl5.bat" "

C:\Windows\system32\chcp.com

chcp 65001

C:\Windows\system32\PING.EXE

ping -n 10 localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 147.185.221.20:18563 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/4912-0-0x00007FFCBAE03000-0x00007FFCBAE05000-memory.dmp

memory/4912-1-0x0000000000510000-0x0000000000834000-memory.dmp

memory/4912-2-0x00007FFCBAE00000-0x00007FFCBB8C1000-memory.dmp

memory/4912-3-0x000000001BF20000-0x000000001BF70000-memory.dmp

memory/4912-4-0x000000001C030000-0x000000001C0E2000-memory.dmp

memory/4912-5-0x000000001BEF0000-0x000000001BF02000-memory.dmp

memory/4912-6-0x000000001BFB0000-0x000000001BFEC000-memory.dmp

memory/4912-7-0x00007FFCBAE03000-0x00007FFCBAE05000-memory.dmp

memory/4912-8-0x00007FFCBAE00000-0x00007FFCBB8C1000-memory.dmp

memory/4912-9-0x000000001CCE0000-0x000000001CD8A000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\KuBhliT3xyl5.bat

MD5 180e19ffa6762e8abd5db275adedb487
SHA1 5d5b8245ba751b2e4b2f9b0b80ecfae4d34a63d4
SHA256 34e014299a2f6344c12c2e8232e3bc5de7879f5f8afd2ed6f0b584cfc3a6c0fa
SHA512 2669d317223e2205121ae94af3cc0f05da0a56e24d83fa50ed3ba139e7eb08bcd781916b6128e638f21b25dbfd28ad0258b48bc8a67f4588f3a5f25703df28dc

memory/4912-18-0x00007FFCBAE00000-0x00007FFCBB8C1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-05 04:23

Reported

2024-08-05 04:26

Platform

win7-20240704-en

Max time kernel

133s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built.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\Client-built.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp

Files

memory/2468-0-0x000007FEF4F23000-0x000007FEF4F24000-memory.dmp

memory/2468-1-0x00000000001F0000-0x0000000000514000-memory.dmp

memory/2468-2-0x000007FEF4F20000-0x000007FEF590C000-memory.dmp

memory/2468-3-0x000007FEF4F23000-0x000007FEF4F24000-memory.dmp

memory/2468-4-0x000007FEF4F20000-0x000007FEF590C000-memory.dmp