Malware Analysis Report

2025-01-18 04:10

Sample ID 241103-x6hmvssfnq
Target SynapseX.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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 19:27

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 19:27

Reported

2024-11-03 19:30

Platform

win7-20240903-en

Max time kernel

145s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SynapseX.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
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\SynapseX.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

Suspicious use of SendNotifyMessage

Description Indicator Process Target
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\SynapseX.exe

"C:\Users\Admin\AppData\Local\Temp\SynapseX.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 Inversin-43597.portmap.host udp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp

Files

memory/2384-0-0x000007FEF5923000-0x000007FEF5924000-memory.dmp

memory/2384-1-0x00000000012C0000-0x00000000015E4000-memory.dmp

memory/2384-2-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

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

MD5 e78c57ec9112a2860d4c07e1535452c6
SHA1 cfb8f58daaa9ae932b2e55c04eb887210cbf0a41
SHA256 64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746
SHA512 50597692c65f476d3f96d43fc97813c2747cacccd542eaf82cb736827ba02fb291e905b9a7410f891eee394f2252f37aceaf26fbc8dcef0ebdd21fbe37fcaf93

memory/2496-9-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

memory/2496-10-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

memory/2496-8-0x0000000000360000-0x0000000000684000-memory.dmp

memory/2384-7-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

memory/2496-11-0x000007FEF5920000-0x000007FEF630C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 19:27

Reported

2024-11-03 19:31

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

154s

Command Line

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

"C:\Users\Admin\AppData\Local\Temp\SynapseX.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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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
US 8.8.8.8:53 g.bing.com udp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
US 150.171.28.10:443 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 99.193.161.193.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 67.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 24.173.189.20.in-addr.arpa udp

Files

memory/1128-0-0x00007FFB253C3000-0x00007FFB253C5000-memory.dmp

memory/1128-1-0x00000000009F0000-0x0000000000D14000-memory.dmp

memory/1128-2-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

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

MD5 e78c57ec9112a2860d4c07e1535452c6
SHA1 cfb8f58daaa9ae932b2e55c04eb887210cbf0a41
SHA256 64207a7e81e788dd1044a8fa6d6a4f87757cdd870af520a2e44576ac21a6e746
SHA512 50597692c65f476d3f96d43fc97813c2747cacccd542eaf82cb736827ba02fb291e905b9a7410f891eee394f2252f37aceaf26fbc8dcef0ebdd21fbe37fcaf93

memory/4592-8-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

memory/1128-9-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

memory/4592-10-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

memory/4592-11-0x000000001C1C0000-0x000000001C210000-memory.dmp

memory/4592-12-0x000000001C2D0000-0x000000001C382000-memory.dmp

memory/4592-15-0x000000001C1A0000-0x000000001C1B2000-memory.dmp

memory/4592-16-0x000000001C250000-0x000000001C28C000-memory.dmp

memory/4592-17-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp

memory/4592-18-0x00007FFB253C0000-0x00007FFB25E81000-memory.dmp