Malware Analysis Report

2025-01-18 04:09

Sample ID 241103-yabeca1pbv
Target Synapse X.exe
SHA256 64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746
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 Overview

score
10/10

SHA256

64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746

Threat Level: Known bad

The file Synapse X.exe was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar payload

Quasar RAT

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious use of FindShellTrayWindow

Uses Task Scheduler COM API

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 19:34

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

2024-11-03 19:34

Reported

2024-11-03 19:37

Platform

win10ltsc2021-20241023-en

Max time kernel

97s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Synapse X.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

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

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Synapse X.exe

"C:\Users\Admin\AppData\Local\Temp\Synapse X.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 Inversin-43597.portmap.host udp
DE 193.161.193.99:43597 Inversin-43597.portmap.host 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 99.193.161.193.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 cxcs.microsoft.net udp
GB 2.18.27.76:443 www.bing.com tcp
GB 23.62.195.195:443 cxcs.microsoft.net tcp
US 8.8.8.8:53 76.27.18.2.in-addr.arpa udp
US 8.8.8.8:53 195.195.62.23.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 fd.api.iris.microsoft.com udp
NL 20.103.156.88:443 fd.api.iris.microsoft.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp

Files

memory/3480-0-0x00007FFFA5893000-0x00007FFFA5895000-memory.dmp

memory/3480-1-0x0000000000A50000-0x0000000000D74000-memory.dmp

memory/3480-2-0x00007FFFA5890000-0x00007FFFA6352000-memory.dmp

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

MD5 e78c57ec9112a2860d4c07e1535452c6
SHA1 cfb8f58daaa9ae932b2e55c04eb887210cbf0a41
SHA256 64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746
SHA512 50597692c65f476d3f96d43fc97813c2747cacccd542eaf82cb736827ba02fb291e905b9a7410f891eee394f2252f37aceaf26fbc8dcef0ebdd21fbe37fcaf93

memory/3040-6-0x00007FFFA5890000-0x00007FFFA6352000-memory.dmp

memory/3480-5-0x00007FFFA5890000-0x00007FFFA6352000-memory.dmp

memory/3040-7-0x00007FFFA5890000-0x00007FFFA6352000-memory.dmp

memory/3040-8-0x000000001C4B0000-0x000000001C500000-memory.dmp

memory/3040-9-0x000000001C5C0000-0x000000001C672000-memory.dmp

memory/3040-13-0x000000001C560000-0x000000001C59C000-memory.dmp

memory/3040-12-0x000000001C500000-0x000000001C512000-memory.dmp

memory/3040-14-0x00007FFFA5890000-0x00007FFFA6352000-memory.dmp