Malware Analysis Report

2024-10-23 21:28

Sample ID 240417-cmmr9aba33
Target 9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326
SHA256 9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326
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

9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326

Threat Level: Known bad

The file 9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326 was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar RAT

Quasar family

Quasar payload

Detects executables containing common artifacts observed in infostealers

Detects Windows executables referencing non-Windows User-Agents

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Detects executables containing common artifacts observed in infostealers

Detects Windows executables referencing non-Windows User-Agents

Executes dropped EXE

Unsigned PE

Creates scheduled task(s)

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-17 02:11

Signatures

Detects Windows executables referencing non-Windows User-Agents

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

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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

Detects executables containing common artifacts observed in infostealers

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

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

2024-04-17 02:11

Reported

2024-04-17 02:14

Platform

win7-20240221-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.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

Detects Windows executables referencing non-Windows User-Agents

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

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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

Detects executables containing common artifacts observed in infostealers

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

Creates scheduled task(s)

persistence
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\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.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 2768 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe C:\Windows\system32\schtasks.exe
PID 2768 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe C:\Windows\system32\schtasks.exe
PID 2768 wrote to memory of 2876 N/A C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe C:\Windows\system32\schtasks.exe
PID 2768 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2768 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 2768 wrote to memory of 3056 N/A C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
PID 3056 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\system32\schtasks.exe
PID 3056 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\system32\schtasks.exe
PID 3056 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe C:\Windows\system32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe

"C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "WindowsClient" /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 "WindowsClient" /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 LunasLove-64385.portmap.host udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp

Files

memory/2768-0-0x00000000010C0000-0x00000000013E4000-memory.dmp

memory/2768-1-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

memory/2768-2-0x0000000000EA0000-0x0000000000F20000-memory.dmp

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

MD5 e9633057e16f92098ddc3a798feeaff2
SHA1 3923362ecc24bbc6c61eda73caecaccb83511573
SHA256 9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326
SHA512 48b60794cf45127452de0b69f9275de62243e3ef5c7f65b7c7f0701d1cbc91b1fe1e6e7b8f5d543298ab88692210e60ca50b0b88f2d4221c3d7190eb0aaeb3a9

memory/2768-9-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

memory/3056-10-0x0000000000990000-0x0000000000CB4000-memory.dmp

memory/3056-8-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

memory/3056-11-0x000000001B310000-0x000000001B390000-memory.dmp

memory/3056-12-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

memory/3056-13-0x000000001B310000-0x000000001B390000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-17 02:11

Reported

2024-04-17 02:14

Platform

win10v2004-20240412-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.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

Detects Windows executables referencing non-Windows User-Agents

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

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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

Detects executables containing common artifacts observed in infostealers

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

Creates scheduled task(s)

persistence
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\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe

"C:\Users\Admin\AppData\Local\Temp\9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "WindowsClient" /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 "WindowsClient" /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 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 LunasLove-64385.portmap.host udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
US 8.8.8.8:53 28.143.109.104.in-addr.arpa udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp
DE 193.161.193.99:64385 LunasLove-64385.portmap.host tcp

Files

memory/3928-0-0x0000000000FD0000-0x00000000012F4000-memory.dmp

memory/3928-1-0x00007FFB6C9E0000-0x00007FFB6D4A1000-memory.dmp

memory/3928-2-0x0000000003490000-0x00000000034A0000-memory.dmp

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

MD5 e9633057e16f92098ddc3a798feeaff2
SHA1 3923362ecc24bbc6c61eda73caecaccb83511573
SHA256 9e1276a64065335038649c9c55137633d4b02b0a3d564635f621f41b5890b326
SHA512 48b60794cf45127452de0b69f9275de62243e3ef5c7f65b7c7f0701d1cbc91b1fe1e6e7b8f5d543298ab88692210e60ca50b0b88f2d4221c3d7190eb0aaeb3a9

memory/4240-10-0x00007FFB6C9E0000-0x00007FFB6D4A1000-memory.dmp

memory/4240-11-0x000000001BBD0000-0x000000001BBE0000-memory.dmp

memory/3928-9-0x00007FFB6C9E0000-0x00007FFB6D4A1000-memory.dmp

memory/4240-12-0x000000001BB60000-0x000000001BBB0000-memory.dmp

memory/4240-13-0x000000001C4C0000-0x000000001C572000-memory.dmp

memory/4240-14-0x00007FFB6C9E0000-0x00007FFB6D4A1000-memory.dmp

memory/4240-15-0x000000001BBD0000-0x000000001BBE0000-memory.dmp