quasar | 2af9725559beb603eeab6daa046b65b8e80cbaa09c097aabb7fb774e63373268

Analysis

max time kernel
324s
max time network
327s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2025 22:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Xeno-v1.1.4-x64/Xeno-v1.1.4-x64/Xeno.exe
Size

3.1MB
MD5

769f6aa7161e2978d1eb97aa41c5d0a9
SHA1

ab25d79257b35105836bc53ad3e0dbc96ec50526
SHA256

9155b1e3f00c90e2419d313c4eed90c30a5febdd7ff532976deedde770435c34
SHA512

0a20c291fdfa2db01284282ce8198bd4c3dd624eb9f27b1df47fcd63a083c43839058c33a4f983cf25672bb5ebae68108da2ae50155f9e65bd6f0791872f5bcb
SSDEEP

49152:SvyI22SsaNYfdPBldt698dBcjHBfxNESEJk/ibLoGdCTHHB72eh2NT:Svf22SsaNYfdPBldt6+dBcjHpxEn

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.253:4782

Mutex

498f78ba-87f1-4d58-aef8-71c972b3dc95

Attributes

encryption_key
1F41281BE3488F3C3E3F1F76C4193411000F6DBF
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral12/memory/1332-1-0x0000000000DF0000-0x0000000001114000-memory.dmp	family_quasar
behavioral12/files/0x000a000000023c1b-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4736	Client.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
2888	schtasks.exe
2716	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	Xeno.exe
Token: SeDebugPrivilege	4736	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4736	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1332 wrote to memory of 2888	1332	Xeno.exe	85
PID 1332 wrote to memory of 2888	1332	Xeno.exe	85
PID 1332 wrote to memory of 4736	1332	Xeno.exe	87
PID 1332 wrote to memory of 4736	1332	Xeno.exe	87
PID 4736 wrote to memory of 2716	4736	Client.exe	88
PID 4736 wrote to memory of 2716	4736	Client.exe	88

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\Xeno-v1.1.4-x64\Xeno-v1.1.4-x64\Xeno.exe
"C:\Users\Admin\AppData\Local\Temp\Xeno-v1.1.4-x64\Xeno-v1.1.4-x64\Xeno.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2888
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2716

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
3.1MB

MD5
769f6aa7161e2978d1eb97aa41c5d0a9

SHA1
ab25d79257b35105836bc53ad3e0dbc96ec50526

SHA256
9155b1e3f00c90e2419d313c4eed90c30a5febdd7ff532976deedde770435c34

SHA512
0a20c291fdfa2db01284282ce8198bd4c3dd624eb9f27b1df47fcd63a083c43839058c33a4f983cf25672bb5ebae68108da2ae50155f9e65bd6f0791872f5bcb

Download Submit
memory/1332-0-0x00007FF8E9BB3000-0x00007FF8E9BB5000-memory.dmp

Filesize
8KB

Download
memory/1332-1-0x0000000000DF0000-0x0000000001114000-memory.dmp

Filesize
3.1MB

Download
memory/1332-2-0x00007FF8E9BB0000-0x00007FF8EA671000-memory.dmp

Filesize
10.8MB

Download
memory/1332-9-0x00007FF8E9BB0000-0x00007FF8EA671000-memory.dmp

Filesize
10.8MB

Download
memory/4736-10-0x00007FF8E9BB0000-0x00007FF8EA671000-memory.dmp

Filesize
10.8MB

Download
memory/4736-11-0x00007FF8E9BB0000-0x00007FF8EA671000-memory.dmp

Filesize
10.8MB

Download
memory/4736-12-0x000000001BA10000-0x000000001BA60000-memory.dmp

Filesize
320KB

Download
memory/4736-13-0x000000001BB20000-0x000000001BBD2000-memory.dmp

Filesize
712KB

Download
memory/4736-14-0x00007FF8E9BB0000-0x00007FF8EA671000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads