quasar | 1815a7d64f7c44b2eeb9560c62d8f805f85f0abd7a5119940bece4ba75a98721

Analysis

max time kernel
141s
max time network
145s
platform
windows11-21h2_x64
resource
win11-20241007-fr
resource tags

arch:x64arch:x86image:win11-20241007-frlocale:fr-fros:windows11-21h2-x64systemwindows
submitted
02-01-2025 20:44

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General

Target

Client-built.exe
Size

3.1MB
MD5

06f2bf9b401d06ce6c91498ead63e2a1
SHA1

b90040aacdde3a0dbb310a672cb6f6b8537c3875
SHA256

1815a7d64f7c44b2eeb9560c62d8f805f85f0abd7a5119940bece4ba75a98721
SHA512

95400aa5f057aecfe817cca3ca5250dc8727407806a662a84f2d293998c014710850a97a76f70cfb1cb674b4b9c1d9533a0b7d2a74723592b0fa849e1640a9ed
SSDEEP

49152:MvPlL26AaNeWgPhlmVqvMQ7XSKrp12xoGdmTHHB72eh2NT:MvdL26AaNeWgPhlmVqkQ7XSKrp1k

Score

10^/10

quasar lisasucemoi spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

LisaSuceMoi

valouzz1234-60474.portmap.host:60474

Mutex

eb21c27a-76a8-4d9b-bf47-98f413c746f5

Attributes

encryption_key
4B5EEB0652E6BEA43CC995383C7934AFE315C272
install_name
reg32.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Updater System
subdirectory
Windows Updater

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/memory/3500-1-0x00000000002F0000-0x0000000000618000-memory.dmp	family_quasar
behavioral1/files/0x001b00000002aafd-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3860	reg32.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1216	schtasks.exe
4420	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3500	Client-built.exe
Token: SeDebugPrivilege	3860	reg32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3860	reg32.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3860	reg32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3860	reg32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3500 wrote to memory of 1216	3500	Client-built.exe	77
PID 3500 wrote to memory of 1216	3500	Client-built.exe	77
PID 3500 wrote to memory of 3860	3500	Client-built.exe	79
PID 3500 wrote to memory of 3860	3500	Client-built.exe	79
PID 3860 wrote to memory of 4420	3860	reg32.exe	80
PID 3860 wrote to memory of 4420	3860	reg32.exe	80

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Windows Updater System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Updater\reg32.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1216
- C:\Users\Admin\AppData\Roaming\Windows Updater\reg32.exe
  "C:\Users\Admin\AppData\Roaming\Windows Updater\reg32.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3860
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Windows Updater System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Updater\reg32.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Windows Updater\reg32.exe

Filesize
3.1MB

MD5
06f2bf9b401d06ce6c91498ead63e2a1

SHA1
b90040aacdde3a0dbb310a672cb6f6b8537c3875

SHA256
1815a7d64f7c44b2eeb9560c62d8f805f85f0abd7a5119940bece4ba75a98721

SHA512
95400aa5f057aecfe817cca3ca5250dc8727407806a662a84f2d293998c014710850a97a76f70cfb1cb674b4b9c1d9533a0b7d2a74723592b0fa849e1640a9ed

Download Submit
memory/3500-0-0x00007FFA87723000-0x00007FFA87725000-memory.dmp

Filesize
8KB

Download
memory/3500-1-0x00000000002F0000-0x0000000000618000-memory.dmp

Filesize
3.2MB

Download
memory/3500-2-0x00007FFA87720000-0x00007FFA881E2000-memory.dmp

Filesize
10.8MB

Download
memory/3500-9-0x00007FFA87720000-0x00007FFA881E2000-memory.dmp

Filesize
10.8MB

Download
memory/3860-10-0x00007FFA87720000-0x00007FFA881E2000-memory.dmp

Filesize
10.8MB

Download
memory/3860-11-0x00007FFA87720000-0x00007FFA881E2000-memory.dmp

Filesize
10.8MB

Download
memory/3860-12-0x000000001BEF0000-0x000000001BF40000-memory.dmp

Filesize
320KB

Download
memory/3860-13-0x000000001C980000-0x000000001CA32000-memory.dmp

Filesize
712KB

Download
memory/3860-14-0x00007FFA87720000-0x00007FFA881E2000-memory.dmp

Filesize
10.8MB

Download
memory/3860-15-0x000000001D2F0000-0x000000001D818000-memory.dmp

Filesize
5.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads