Malware Analysis Report

2025-01-18 04:09

Sample ID 241102-zyl2esvna1
Target 0x0007000000012117-5.dat
SHA256 7ce80a4a4932516cf8163f73c85537e621b0a1e1a0c0fda41da1f71b1867dfc6
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

7ce80a4a4932516cf8163f73c85537e621b0a1e1a0c0fda41da1f71b1867dfc6

Threat Level: Known bad

The file 0x0007000000012117-5.dat was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of FindShellTrayWindow

Uses Task Scheduler COM API

Suspicious use of SetWindowsHookEx

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-02 21:07

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

2024-11-02 21:07

Reported

2024-11-02 21:10

Platform

win7-20240903-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0x0007000000012117-5.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\0x0007000000012117-5.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

Suspicious use of SetWindowsHookEx

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\0x0007000000012117-5.exe

"C:\Users\Admin\AppData\Local\Temp\0x0007000000012117-5.exe"

C:\Windows\system32\schtasks.exe

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

Network

Country Destination Domain Proto
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp
PL 83.168.110.87:4782 tcp

Files

memory/2728-0-0x000007FEF4E83000-0x000007FEF4E84000-memory.dmp

memory/2728-1-0x00000000003B0000-0x00000000006D4000-memory.dmp

memory/2728-2-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

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

MD5 e456f2449b504e6af29acb9c1e0ebd25
SHA1 4680b936eca2d5a88cbeed164b54a0b12f138892
SHA256 7ce80a4a4932516cf8163f73c85537e621b0a1e1a0c0fda41da1f71b1867dfc6
SHA512 ffe8788bae2143eb5b68f57edb3ded569bc1e75390bc48a7eb92e65a95688d34229039001d80f717f1c14e650fe94c01ec6e9438dac045af17569dc6811ab281

memory/2728-9-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

memory/2840-8-0x00000000009E0000-0x0000000000D04000-memory.dmp

memory/2840-10-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

memory/2840-11-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

memory/2840-12-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

memory/2840-13-0x000007FEF4E80000-0x000007FEF586C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-02 21:07

Reported

2024-11-02 21:10

Platform

win10v2004-20241007-en

Max time kernel

143s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0x0007000000012117-5.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\0x0007000000012117-5.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

Suspicious use of SetWindowsHookEx

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\0x0007000000012117-5.exe

"C:\Users\Admin\AppData\Local\Temp\0x0007000000012117-5.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "puttystart" /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 "puttystart" /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 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
PL 83.168.110.87:4782 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 87.110.168.83.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 224.122.19.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.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

Files

memory/4020-0-0x00007FF8DBAB3000-0x00007FF8DBAB5000-memory.dmp

memory/4020-1-0x0000000000ED0000-0x00000000011F4000-memory.dmp

memory/4020-2-0x00007FF8DBAB0000-0x00007FF8DC571000-memory.dmp

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

MD5 e456f2449b504e6af29acb9c1e0ebd25
SHA1 4680b936eca2d5a88cbeed164b54a0b12f138892
SHA256 7ce80a4a4932516cf8163f73c85537e621b0a1e1a0c0fda41da1f71b1867dfc6
SHA512 ffe8788bae2143eb5b68f57edb3ded569bc1e75390bc48a7eb92e65a95688d34229039001d80f717f1c14e650fe94c01ec6e9438dac045af17569dc6811ab281

memory/4020-9-0x00007FF8DBAB0000-0x00007FF8DC571000-memory.dmp

memory/1612-10-0x00007FF8DBAB0000-0x00007FF8DC571000-memory.dmp

memory/1612-11-0x00007FF8DBAB0000-0x00007FF8DC571000-memory.dmp

memory/1612-12-0x000000001C8D0000-0x000000001C920000-memory.dmp

memory/1612-13-0x000000001C9E0000-0x000000001CA92000-memory.dmp

memory/1612-16-0x000000001C960000-0x000000001C972000-memory.dmp

memory/1612-17-0x000000001D0E0000-0x000000001D11C000-memory.dmp

memory/1612-18-0x00007FF8DBAB0000-0x00007FF8DC571000-memory.dmp