quasar | c509f6b4c1b5c688fb3ef4c80939d8a528818d9618c9597d27fef551e1da09ec

Analysis

max time kernel
148s
max time network
151s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
20-12-2024 18:14

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General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

1b21e564a0d06c7c5c6dd40a006666c5
SHA1

43f1ba033e6ade7ef9e88ce3438c8d90b9ae8172
SHA256

c509f6b4c1b5c688fb3ef4c80939d8a528818d9618c9597d27fef551e1da09ec
SHA512

cd46b6f5c34dd020c80aebf10b3299a79de12e8fe402980a4021b65647f0ca1fe45805254ce47336bbcc940201fcc78397dff47d1029e1473986a217ed614495
SSDEEP

49152:MvfqB2ZNag4YgPblSvLo6L2KocqxRJ6fbR3LoGdY1PTHHB72eh2NT:MvyB2ZNag4YgPblSvL5L2KocqxRJ6xo

Score

10^/10

quasar svchost spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

air-specials.gl.at.ply.gg:4782

air-specials.gl.at.ply.gg:38318

kalewone-55458.portmap.host:55458

kalewone-55458.portmap.host:4782

6wb0ldmv-4782.euw.devtunnels.ms:4782

Mutex

d251c3ed-b70d-4ab6-b393-9de80125c75e

Attributes

encryption_key
BDB44181C868606DFCA1741A69056AAA62DADEFC
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
System32

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/memory/652-1-0x0000000000650000-0x0000000000974000-memory.dmp	family_quasar
behavioral1/files/0x0028000000046150-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1044	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\System32	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32	svchost.exe
File created	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.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
4648	schtasks.exe
2024	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	652	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	1044	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1044	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 4648	652	FlashingSoftwarePRO.exe	84
PID 652 wrote to memory of 4648	652	FlashingSoftwarePRO.exe	84
PID 652 wrote to memory of 1044	652	FlashingSoftwarePRO.exe	86
PID 652 wrote to memory of 1044	652	FlashingSoftwarePRO.exe	86
PID 1044 wrote to memory of 2024	1044	svchost.exe	87
PID 1044 wrote to memory of 2024	1044	svchost.exe	87

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\FlashingSoftwarePRO.exe
"C:\Users\Admin\AppData\Local\Temp\FlashingSoftwarePRO.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:652
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4648
- C:\Windows\system32\System32\svchost.exe
  "C:\Windows\system32\System32\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1044
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2024

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

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Downloads

C:\Windows\System32\System32\svchost.exe

Filesize
3.1MB

MD5
1b21e564a0d06c7c5c6dd40a006666c5

SHA1
43f1ba033e6ade7ef9e88ce3438c8d90b9ae8172

SHA256
c509f6b4c1b5c688fb3ef4c80939d8a528818d9618c9597d27fef551e1da09ec

SHA512
cd46b6f5c34dd020c80aebf10b3299a79de12e8fe402980a4021b65647f0ca1fe45805254ce47336bbcc940201fcc78397dff47d1029e1473986a217ed614495

Download Submit
memory/652-0-0x00007FFECBC63000-0x00007FFECBC65000-memory.dmp

Filesize
8KB

Download
memory/652-1-0x0000000000650000-0x0000000000974000-memory.dmp

Filesize
3.1MB

Download
memory/652-2-0x00007FFECBC60000-0x00007FFECC722000-memory.dmp

Filesize
10.8MB

Download
memory/652-6-0x00007FFECBC60000-0x00007FFECC722000-memory.dmp

Filesize
10.8MB

Download
memory/1044-5-0x00007FFECBC60000-0x00007FFECC722000-memory.dmp

Filesize
10.8MB

Download
memory/1044-7-0x000000001D600000-0x000000001D650000-memory.dmp

Filesize
320KB

Download
memory/1044-8-0x000000001D710000-0x000000001D7C2000-memory.dmp

Filesize
712KB

Download
memory/1044-9-0x00007FFECBC60000-0x00007FFECC722000-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