quasar | 04a8ea940dacb2c7a2244fd0c7b866f0bf5182e72094ba36d295e46220f897b6

Analysis

max time kernel
899s
max time network
900s
platform
windows11-21h2_x64
resource
win11-20241023-en
resource tags

arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
submitted
18/01/2025, 00:40

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General

Target

Client-built.exe
Size

3.1MB
MD5

e4369c98d601dc858320b18b0a458328
SHA1

f1d9c49e6f314a189dd85af3e8f87bd02d60e991
SHA256

04a8ea940dacb2c7a2244fd0c7b866f0bf5182e72094ba36d295e46220f897b6
SHA512

160c3f3bc6049a35095d73b69ffeecddb4646883ec1d10b0d4dbc2050922cdbbbf9ab16005e3a780797595e38a73dff963458496cc278a8a93938e0533dc1720
SSDEEP

49152:6vTlL26AaNeWgPhlmVqvMQ7XSK55RJ6LbR3LoGdjfTHHB72eh2NT:6vJL26AaNeWgPhlmVqkQ7XSK55RJ6d

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

notthesigma-40903.portmap.host:1234

Mutex

a9d4cca0-0df2-4395-ba6f-2f930767837b

Attributes

encryption_key
B0C3FFA54D54EA0A98A597FBD1AAE2D8D5B39253
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 1 IoCs

resource	yara_rule
behavioral1/memory/996-1-0x00000000009E0000-0x0000000000D04000-memory.dmp	family_quasar

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	996	Client-built.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
996	Client-built.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
996	Client-built.exe

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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/996-0-0x00007FFF7EC73000-0x00007FFF7EC75000-memory.dmp

Filesize
8KB

Download
memory/996-1-0x00000000009E0000-0x0000000000D04000-memory.dmp

Filesize
3.1MB

Download
memory/996-2-0x00007FFF7EC70000-0x00007FFF7F732000-memory.dmp

Filesize
10.8MB

Download
memory/996-3-0x000000001C390000-0x000000001C3E0000-memory.dmp

Filesize
320KB

Download
memory/996-4-0x000000001C4A0000-0x000000001C552000-memory.dmp

Filesize
712KB

Download
memory/996-5-0x00007FFF7EC73000-0x00007FFF7EC75000-memory.dmp

Filesize
8KB

Download
memory/996-6-0x00007FFF7EC70000-0x00007FFF7F732000-memory.dmp

Filesize
10.8MB

Download