quasar | bde55fc54af61ab48291e3da95de4583ac712a546898cb80d2f1a3b9d61cd943

Analysis

max time kernel
296s
max time network
300s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/12/2024, 16:03

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General

Target

Client-built.exe
Size

3.1MB
MD5

26be42d7c0a7e72352015d36f8359f39
SHA1

ae8d5520128a5851161f53f549b2848c21b380be
SHA256

bde55fc54af61ab48291e3da95de4583ac712a546898cb80d2f1a3b9d61cd943
SHA512

60134b8b212e8bc3dec13fb90748a594cdf275265d2ed55a6719fed96b246a9e4f2b71080ab4effe2aefdc1108f27e53e423718fd8502b54ab3153cca44da54b
SSDEEP

49152:Lv6lL26AaNeWgPhlmVqvMQ7XSKzFhRJ61bR3LoGdCOTHHB72eh2NT:LviL26AaNeWgPhlmVqkQ7XSKzjRJ6HS

Score

10^/10

quasar sigma spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

sigma

192.168.1.35:4782

Mutex

f0e2a556-a493-438f-96ae-a0a36490d4a7

Attributes

encryption_key
2E8E60D973DF9D3760020D9B3785B9D56136B0B0
install_name
xbox-connect settings.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
XWARN

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/1284-1-0x0000000000050000-0x0000000000374000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023c67-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
852	xbox-connect settings.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1284	Client-built.exe
Token: SeDebugPrivilege	852	xbox-connect settings.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
852	xbox-connect settings.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
852	xbox-connect settings.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
852	xbox-connect settings.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 852	1284	Client-built.exe	83
PID 1284 wrote to memory of 852	1284	Client-built.exe	83

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:1284
- C:\Users\Admin\AppData\Roaming\XWARN\xbox-connect settings.exe
  "C:\Users\Admin\AppData\Roaming\XWARN\xbox-connect settings.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:852

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

C:\Users\Admin\AppData\Roaming\XWARN\xbox-connect settings.exe

Filesize
3.1MB

MD5
26be42d7c0a7e72352015d36f8359f39

SHA1
ae8d5520128a5851161f53f549b2848c21b380be

SHA256
bde55fc54af61ab48291e3da95de4583ac712a546898cb80d2f1a3b9d61cd943

SHA512
60134b8b212e8bc3dec13fb90748a594cdf275265d2ed55a6719fed96b246a9e4f2b71080ab4effe2aefdc1108f27e53e423718fd8502b54ab3153cca44da54b

Download Submit
memory/852-8-0x00007FF98BBA0000-0x00007FF98C661000-memory.dmp

Filesize
10.8MB

Download
memory/852-10-0x00007FF98BBA0000-0x00007FF98C661000-memory.dmp

Filesize
10.8MB

Download
memory/852-11-0x000000001C560000-0x000000001C5B0000-memory.dmp

Filesize
320KB

Download
memory/852-12-0x000000001C670000-0x000000001C722000-memory.dmp

Filesize
712KB

Download
memory/852-13-0x00007FF98BBA0000-0x00007FF98C661000-memory.dmp

Filesize
10.8MB

Download
memory/1284-0-0x00007FF98BBA3000-0x00007FF98BBA5000-memory.dmp

Filesize
8KB

Download
memory/1284-1-0x0000000000050000-0x0000000000374000-memory.dmp

Filesize
3.1MB

Download
memory/1284-2-0x00007FF98BBA0000-0x00007FF98C661000-memory.dmp

Filesize
10.8MB

Download
memory/1284-9-0x00007FF98BBA0000-0x00007FF98C661000-memory.dmp

Filesize
10.8MB

Download