Malware Analysis Report

2024-12-07 13:05

Sample ID 241113-x68jaaxhqe
Target rab.exe
SHA256 250ed85363ae1d6dd070a462f1ac25a8a74c5e1380359d85eb082b0eaf4bb8b1
Tags
quasar megahack_v1488 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

250ed85363ae1d6dd070a462f1ac25a8a74c5e1380359d85eb082b0eaf4bb8b1

Threat Level: Known bad

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

Malicious Activity Summary

quasar megahack_v1488 spyware trojan

Quasar RAT

Quasar family

Quasar payload

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious use of SetWindowsHookEx

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 19:29

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

2024-11-13 19:29

Reported

2024-11-13 19:31

Platform

win7-20240708-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\rab.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:\Windows\system32\SubDir\system32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\SubDir\system32.exe C:\Users\Admin\AppData\Local\Temp\rab.exe N/A
File opened for modification C:\Windows\system32\SubDir\system32.exe C:\Users\Admin\AppData\Local\Temp\rab.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Users\Admin\AppData\Local\Temp\rab.exe N/A
File opened for modification C:\Windows\system32\SubDir\system32.exe C:\Windows\system32\SubDir\system32.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Windows\system32\SubDir\system32.exe N/A

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\rab.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\SubDir\system32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\SubDir\system32.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Trusted Installer" /sc ONLOGON /tr "C:\Windows\system32\SubDir\system32.exe" /rl HIGHEST /f

C:\Windows\system32\SubDir\system32.exe

"C:\Windows\system32\SubDir\system32.exe"

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Trusted Installer" /sc ONLOGON /tr "C:\Windows\system32\SubDir\system32.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 rab1.premium-televizor.net udp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp

Files

memory/2000-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

memory/2000-1-0x0000000000BD0000-0x0000000000EF4000-memory.dmp

memory/2000-2-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

C:\Windows\System32\SubDir\system32.exe

MD5 20290ac43ac1bed38b4ba6a9c8a0563c
SHA1 8ba324cb8ef2fd31ff6e5d7395ed33178141a28e
SHA256 250ed85363ae1d6dd070a462f1ac25a8a74c5e1380359d85eb082b0eaf4bb8b1
SHA512 ef2f449cbbbb9e5cf9ae3af3406c80af4422cb0b65d690d28807da02e8ad7416831f80ce63365ce12ee730c31c4ce18d787673838cf3c3c3d102de11aa53111e

memory/2000-8-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

memory/2384-11-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

memory/2384-10-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

memory/2384-9-0x0000000001180000-0x00000000014A4000-memory.dmp

memory/2384-12-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 19:29

Reported

2024-11-13 19:31

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\rab.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:\Windows\system32\SubDir\system32.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\system32\SubDir\system32.exe C:\Users\Admin\AppData\Local\Temp\rab.exe N/A
File opened for modification C:\Windows\system32\SubDir\system32.exe C:\Users\Admin\AppData\Local\Temp\rab.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Users\Admin\AppData\Local\Temp\rab.exe N/A
File opened for modification C:\Windows\system32\SubDir\system32.exe C:\Windows\system32\SubDir\system32.exe N/A
File opened for modification C:\Windows\system32\SubDir C:\Windows\system32\SubDir\system32.exe N/A

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\rab.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\SubDir\system32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\SubDir\system32.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Trusted Installer" /sc ONLOGON /tr "C:\Windows\system32\SubDir\system32.exe" /rl HIGHEST /f

C:\Windows\system32\SubDir\system32.exe

"C:\Windows\system32\SubDir\system32.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Trusted Installer" /sc ONLOGON /tr "C:\Windows\system32\SubDir\system32.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 rab1.premium-televizor.net udp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
DE 192.121.22.243:18651 rab1.premium-televizor.net tcp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 243.22.121.192.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp

Files

memory/5100-0-0x00007FFD9D8C3000-0x00007FFD9D8C5000-memory.dmp

memory/5100-1-0x0000000000250000-0x0000000000574000-memory.dmp

memory/5100-2-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

C:\Windows\system32\SubDir\system32.exe

MD5 20290ac43ac1bed38b4ba6a9c8a0563c
SHA1 8ba324cb8ef2fd31ff6e5d7395ed33178141a28e
SHA256 250ed85363ae1d6dd070a462f1ac25a8a74c5e1380359d85eb082b0eaf4bb8b1
SHA512 ef2f449cbbbb9e5cf9ae3af3406c80af4422cb0b65d690d28807da02e8ad7416831f80ce63365ce12ee730c31c4ce18d787673838cf3c3c3d102de11aa53111e

memory/5068-10-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

memory/5100-9-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

memory/5068-11-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

memory/5068-12-0x0000000003120000-0x0000000003170000-memory.dmp

memory/5068-13-0x000000001C4F0000-0x000000001C5A2000-memory.dmp

memory/5068-14-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

memory/5068-15-0x0000000003170000-0x0000000003182000-memory.dmp

memory/5068-16-0x000000001BBC0000-0x000000001BBFC000-memory.dmp