quasar | 9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2

Analysis

max time kernel
126s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2025, 21:31

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General

Target

9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe
Size

3.1MB
MD5

265cd3ec1c1ba2c6215c54b5cd39024c
SHA1

303c396a4f460dc88397af1ae2dc9e9b4a214b64
SHA256

9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2
SHA512

448f0cb2f942b3d92a53f4823299bf78639989b07d02706e25ec3648efb4dd894563763bd9de8fae1ac77311d89833b3f75afeb6b17c03ad3a92cde15af9a659
SSDEEP

49152:rvFt62XlaSFNWPjljiFa2RoUYIR4mFmzALoGd3BiTHHB72eh2NT:rv362XlaSFNWPjljiFXRoUYIR4mX

Score

10^/10

quasar 0 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

64.95.11.214:4782

Mutex

c944155f-3f97-4c60-a0c2-62d9c9732c6e

Attributes

encryption_key
49CED1D49D4E76E51A8DBC72FF6ADC7073955387
install_name
audiodg.exe
log_directory
Logs
reconnect_delay
3000
startup_key
audiodg
subdirectory
Windows

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/5524-1-0x00000000002D0000-0x00000000005F4000-memory.dmp	family_quasar
behavioral2/files/0x00070000000242b8-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2140	audiodg.exe

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

System Information Discovery
T1082

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
1908	schtasks.exe
2356	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5524	9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe
Token: SeDebugPrivilege	2140	audiodg.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2140	audiodg.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2140	audiodg.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5524 wrote to memory of 1908	5524	9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe	90
PID 5524 wrote to memory of 1908	5524	9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe	90
PID 5524 wrote to memory of 2140	5524	9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe	92
PID 5524 wrote to memory of 2140	5524	9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe	92
PID 2140 wrote to memory of 2356	2140	audiodg.exe	95
PID 2140 wrote to memory of 2356	2140	audiodg.exe	95

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\9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe
"C:\Users\Admin\AppData\Local\Temp\9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5524
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "audiodg" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\audiodg.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1908
- C:\Users\Admin\AppData\Roaming\Windows\audiodg.exe
  "C:\Users\Admin\AppData\Roaming\Windows\audiodg.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "audiodg" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\audiodg.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2356

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Windows\audiodg.exe

Filesize
3.1MB

MD5
265cd3ec1c1ba2c6215c54b5cd39024c

SHA1
303c396a4f460dc88397af1ae2dc9e9b4a214b64

SHA256
9e1a126888447375a41859f813e03755a37c4cf108c90108ad8fef598360a7b2

SHA512
448f0cb2f942b3d92a53f4823299bf78639989b07d02706e25ec3648efb4dd894563763bd9de8fae1ac77311d89833b3f75afeb6b17c03ad3a92cde15af9a659

Download Submit
memory/2140-10-0x00007FF9514F0000-0x00007FF951FB1000-memory.dmp

Filesize
10.8MB

Download
memory/2140-11-0x00007FF9514F0000-0x00007FF951FB1000-memory.dmp

Filesize
10.8MB

Download
memory/2140-12-0x000000001BD10000-0x000000001BD60000-memory.dmp

Filesize
320KB

Download
memory/2140-13-0x000000001BE20000-0x000000001BED2000-memory.dmp

Filesize
712KB

Download
memory/2140-14-0x00007FF9514F0000-0x00007FF951FB1000-memory.dmp

Filesize
10.8MB

Download
memory/5524-0-0x00007FF9514F3000-0x00007FF9514F5000-memory.dmp

Filesize
8KB

Download
memory/5524-1-0x00000000002D0000-0x00000000005F4000-memory.dmp

Filesize
3.1MB

Download
memory/5524-2-0x00007FF9514F0000-0x00007FF951FB1000-memory.dmp

Filesize
10.8MB

Download
memory/5524-9-0x00007FF9514F0000-0x00007FF951FB1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads