quasar | 4cdeb2eae1cec1ab07077142313c524e9cf360cdec63497538c4405c2d8ded62

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20250207-en
resource tags

arch:x64arch:x86image:win11-20250207-enlocale:en-usos:windows11-21h2-x64system
submitted
07-02-2025 19:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Quasar v1.4.1/client.exe
Size

3.1MB
MD5

f4d16cfe4cad388255e43f258329f805
SHA1

fe7cc6c9eb76b5ad97867b46d053fae601fd4a2d
SHA256

8fb6ae3496d4ac025eab443d3e322b0faa3461d25b54093c9205d35746e3250e
SHA512

867045eac0f7765e6bea51e62bc4ed68b1e81ce6c2843d2e08714eb391a8ac94c2571c09828286252248400ea5c12bffa50a25c8ec5ad9e6d0bb836320ec188f
SSDEEP

49152:4nb7+y2FqZaVmN+PqlhU/mevlL1nYtsCeAcxUuxG2THHB72eh2NT:4nf+y2FqZaVmN+PqlhU//vlL1Yts3Bx

Score

10^/10

quasar discovery spyware trojan

Malware Config

Extracted

Family

quasar

Attributes

reconnect_delay
5000

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral13/memory/4864-1-0x0000000000BB0000-0x0000000000EDA000-memory.dmp	family_quasar

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3368	MicrosoftEdgeUpdate.exe
3368	MicrosoftEdgeUpdate.exe
3368	MicrosoftEdgeUpdate.exe
3368	MicrosoftEdgeUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4864	client.exe
Token: SeDebugPrivilege	3368	MicrosoftEdgeUpdate.exe

C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\client.exe
"C:\Users\Admin\AppData\Local\Temp\Quasar v1.4.1\client.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4864

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ua /installsource scheduler
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4864-0-0x00007FFD177F3000-0x00007FFD177F5000-memory.dmp

Filesize
8KB

Download
memory/4864-1-0x0000000000BB0000-0x0000000000EDA000-memory.dmp

Filesize
3.2MB

Download
memory/4864-3-0x00007FFD177F0000-0x00007FFD182B2000-memory.dmp

Filesize
10.8MB

Download
memory/4864-4-0x00007FFD177F0000-0x00007FFD182B2000-memory.dmp

Filesize
10.8MB

Download