Malware Analysis Report

2024-10-19 06:35

Sample ID 240601-je77jseb4z
Target loadervmp.exe
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
Tags
seroxen 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

018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae

Threat Level: Known bad

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

Malicious Activity Summary

seroxen quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Loads dropped DLL

Executes dropped EXE

Looks up external IP address via web service

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 07:36

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

2024-06-01 07:36

Reported

2024-06-01 07:41

Platform

win7-20240221-en

Max time kernel

236s

Max time network

287s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Loads dropped DLL

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

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\SCHTASKS.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2128 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 2128 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 2128 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 2128 wrote to memory of 2580 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2128 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2700 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 2700 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 2700 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 2700 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 2128 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe
PID 2128 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe
PID 2128 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe
PID 2128 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe

Processes

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

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

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\loadervmp.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

C:\Windows\SysWOW64\SCHTASKS.exe

"SCHTASKS.exe" /create /tn "$77loadervmp.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\loadervmp.exe'" /sc onlogon /rl HIGHEST

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 github.com udp
GB 20.26.156.215:443 github.com tcp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp

Files

memory/2128-0-0x000000007427E000-0x000000007427F000-memory.dmp

memory/2128-1-0x0000000000C90000-0x0000000000CFC000-memory.dmp

memory/2128-2-0x0000000074270000-0x000000007495E000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5 14f056491baaed04872533c2d9648d46
SHA1 c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
SHA512 c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08

memory/2700-11-0x0000000001300000-0x000000000136C000-memory.dmp

memory/2700-10-0x0000000074270000-0x000000007495E000-memory.dmp

memory/2700-12-0x0000000074270000-0x000000007495E000-memory.dmp

memory/2128-14-0x0000000074270000-0x000000007495E000-memory.dmp

memory/2700-15-0x0000000074270000-0x000000007495E000-memory.dmp

memory/2700-16-0x0000000074270000-0x000000007495E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 07:36

Reported

2024-06-01 07:41

Platform

win10v2004-20240426-en

Max time kernel

236s

Max time network

288s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\SCHTASKS.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3624 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 3624 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 3624 wrote to memory of 4432 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\schtasks.exe
PID 3624 wrote to memory of 1328 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 3624 wrote to memory of 1328 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 3624 wrote to memory of 1328 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 3624 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe
PID 3624 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe
PID 3624 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\loadervmp.exe C:\Windows\SysWOW64\SCHTASKS.exe
PID 1328 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 1328 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 1328 wrote to memory of 3772 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\SysWOW64\schtasks.exe

Processes

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

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

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\loadervmp.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"

C:\Windows\SysWOW64\SCHTASKS.exe

"SCHTASKS.exe" /create /tn "$77loadervmp.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\loadervmp.exe'" /sc onlogon /rl HIGHEST

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 github.com udp
GB 20.26.156.215:443 github.com tcp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
GB 20.26.156.215:443 github.com tcp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp
US 8.8.8.8:53 215.156.26.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 19.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 panel-slave.gl.at.ply.gg udp
US 147.185.221.19:27892 panel-slave.gl.at.ply.gg tcp
US 147.185.221.19:57059 panel-slave.gl.at.ply.gg tcp

Files

memory/3624-0-0x0000000074F4E000-0x0000000074F4F000-memory.dmp

memory/3624-1-0x0000000000A80000-0x0000000000AEC000-memory.dmp

memory/3624-2-0x0000000005A70000-0x0000000006014000-memory.dmp

memory/3624-3-0x0000000005600000-0x0000000005692000-memory.dmp

memory/3624-4-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/3624-5-0x0000000005530000-0x0000000005596000-memory.dmp

memory/3624-6-0x0000000006320000-0x0000000006332000-memory.dmp

memory/3624-7-0x0000000006860000-0x000000000689C000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5 14f056491baaed04872533c2d9648d46
SHA1 c48b08d0e9064f2d060f19474bb54cf3c5a25586
SHA256 018f75f18b882044109f250f19da654c0b3bd90430b318fcb03348908a189aae
SHA512 c109b1a9cf40049f8958beab9cff112cb326dd719c56f6dedafda4cf3a64d3faae3912f34cbcc1ee203a0316e40b8f7016624f05a1ad6c93bbaa0bdc9dc79b08

memory/1328-13-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/1328-14-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/3624-16-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/1328-18-0x0000000006E70000-0x0000000006E7A000-memory.dmp

memory/1328-19-0x0000000074F40000-0x00000000756F0000-memory.dmp