Malware Analysis Report

2024-08-06 11:23

Sample ID 240615-e6z8sssgpn
Target server.exe
SHA256 5800caf82a36637733bfcbf94ff7d84a94b9aed9219e379f8a7fd0fdb9ba2f65
Tags
quasar @123 spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5800caf82a36637733bfcbf94ff7d84a94b9aed9219e379f8a7fd0fdb9ba2f65

Threat Level: Known bad

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

Malicious Activity Summary

quasar @123 spyware stealer trojan

Quasar payload

Quasar family

Quasar RAT

Reads WinSCP keys stored on the system

Checks computer location settings

Reads user/profile data of web browsers

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Runs ping.exe

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Credentials in Registry
T1552.002
Discovery
TA0007
Query Registry
T1012
System Information Discovery
T1082
Remote System Discovery
T1018
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 04:33

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

2024-06-15 04:33

Reported

2024-06-15 04:36

Platform

win10v2004-20240611-en

Max time kernel

95s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\server.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-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Reads WinSCP keys stored on the system

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Enumerates physical storage devices

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\server.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1844 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\server.exe C:\Windows\system32\cmd.exe
PID 1844 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\server.exe C:\Windows\system32\cmd.exe
PID 5104 wrote to memory of 2988 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\chcp.com
PID 5104 wrote to memory of 2988 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\chcp.com
PID 5104 wrote to memory of 1360 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE
PID 5104 wrote to memory of 1360 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\PING.EXE

Processes

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

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

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5nQSobDSnm4Q.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 mother-amanda.gl.at.ply.gg udp
US 8.8.8.8:53 g.bing.com udp
US 147.185.221.20:21734 mother-amanda.gl.at.ply.gg tcp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.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 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 35.15.31.184.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/1844-0-0x00007FFCF9A73000-0x00007FFCF9A75000-memory.dmp

memory/1844-1-0x00000000008A0000-0x0000000000BC4000-memory.dmp

memory/1844-2-0x00007FFCF9A70000-0x00007FFCFA531000-memory.dmp

memory/1844-3-0x000000001B740000-0x000000001B790000-memory.dmp

memory/1844-4-0x000000001BF80000-0x000000001C032000-memory.dmp

memory/1844-5-0x000000001B7B0000-0x000000001B7C2000-memory.dmp

memory/1844-6-0x000000001B930000-0x000000001B96C000-memory.dmp

memory/1844-7-0x00007FFCF9A73000-0x00007FFCF9A75000-memory.dmp

memory/1844-8-0x00007FFCF9A70000-0x00007FFCFA531000-memory.dmp

memory/1844-13-0x00007FFCF9A70000-0x00007FFCFA531000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\5nQSobDSnm4Q.bat

MD5 921e455f26e61d7135292ac764c30902
SHA1 8d995a29d6b0fc7901de52e69b507fbfedf0504c
SHA256 e1518a3cf8f245934c2e80a29b46708b343ea3951738ffab8aac2894075da841
SHA512 d31135eca5d069e1694e119ef52f7b13af723dbbf1fcb18886e91a0f4d39bd0b7ab20900dfbcf210752de23de6dc56d6d76a6738ba81af88c525468b70ac91c5