Malware Analysis Report

2024-10-19 08:36

Sample ID 240731-v1azqazdmg
Target Client-built.exe
SHA256 aeeedbe5a56241a34a9761b5517a8648cadee5d583b2fe77d7beb1f030b0c9c3
Tags
office04 quasar spyware trojan discovery
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

aeeedbe5a56241a34a9761b5517a8648cadee5d583b2fe77d7beb1f030b0c9c3

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan discovery

Quasar RAT

Quasar family

Quasar payload

Checks computer location settings

Enumerates physical storage devices

System Network Configuration Discovery: Internet Connection Discovery

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Runs ping.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-31 17:26

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

2024-07-31 17:26

Reported

2024-07-31 17:29

Platform

win7-20240705-en

Max time kernel

144s

Max time network

149s

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
US 147.185.221.20:18563 tcp

Files

memory/2440-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

memory/2440-1-0x00000000012D0000-0x00000000015F4000-memory.dmp

memory/2440-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

memory/2440-3-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

memory/2440-4-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-31 17:26

Reported

2024-07-31 17:33

Platform

win10v2004-20240730-en

Max time kernel

329s

Max time network

331s

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-1-5-21-195445723-368091294-1661186673-1000\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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4276 wrote to memory of 620 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\cmd.exe
PID 4276 wrote to memory of 620 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\cmd.exe
PID 620 wrote to memory of 2892 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\chcp.com
PID 620 wrote to memory of 2892 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\chcp.com
PID 620 wrote to memory of 1760 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 620 wrote to memory of 1760 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\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ofwAbWfkKGAU.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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 147.185.221.20:18563 tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 96.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 147.185.221.20:9835 tcp
US 8.8.8.8:53 121.170.16.2.in-addr.arpa udp
US 147.185.221.20:18563 tcp
US 8.8.8.8:53 138.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 215.143.182.52.in-addr.arpa udp

Files

memory/4276-0-0x00007FFE1F5C3000-0x00007FFE1F5C5000-memory.dmp

memory/4276-1-0x0000000000BB0000-0x0000000000ED4000-memory.dmp

memory/4276-2-0x00007FFE1F5C0000-0x00007FFE20081000-memory.dmp

memory/4276-3-0x000000001C5D0000-0x000000001C620000-memory.dmp

memory/4276-4-0x000000001C6E0000-0x000000001C792000-memory.dmp

memory/4276-5-0x000000001C5A0000-0x000000001C5B2000-memory.dmp

memory/4276-6-0x000000001C660000-0x000000001C69C000-memory.dmp

memory/4276-7-0x00007FFE1F5C3000-0x00007FFE1F5C5000-memory.dmp

memory/4276-8-0x00007FFE1F5C0000-0x00007FFE20081000-memory.dmp

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

MD5 cb3a40f30bc0a8677abbdb3d6a4f9d50
SHA1 1f2df8bfae3612f962f250fe9a6ebbab1725f975
SHA256 677707cc52528faf159d3b77b11046b3f85edb83f6cdca28133bfe917ad3a0b6
SHA512 39d84f8795f0465dcaabe83b5eb3e526b0f03bf419a9648f4bea394172e30bc91889fb2c1fd24c04f810783300f868157c2734999c11bbab7c5bddd2328cb6da

memory/4276-14-0x00007FFE1F5C0000-0x00007FFE20081000-memory.dmp