quasar | a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98

General

Target

a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
Size

3.1MB
MD5

ed8587b8361fe7ababea56910e3a7750
SHA1

9c4cf2e76a09b8bed78ae240e6c35deaa4b3f5d7
SHA256

a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98
SHA512

18248abf111d37412df931eece3b28d9314358fb21282c791d7dc45f97fa1a8de7ac5728c8f2687a0a4d648f6fcffcecf54c4e7d6f6c61a3bee017b01f52b6b3
SSDEEP

49152:mvDI22SsaNYfdPBldt698dBcjHM/RJ6bbR3LoGdOTHHB72eh2NT:mv822SsaNYfdPBldt6+dBcjHM/RJ6t

Score

10^/10

quasar svchostman spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SvchostMan

C2

121.89.184.234:4782

106.241.55.218:4782

Mutex

3094dfa3-6b09-4170-abb5-cd6f0b055018

Attributes

encryption_key
A5C933A97D91C5A7CDBF6D4FF8D161BFBC686474
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Svc Name
subdirectory
drivers

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/3052-1-0x0000000000CD0000-0x0000000000FF4000-memory.dmp	family_quasar
behavioral1/files/0x000a000000015685-6.dat	family_quasar
behavioral1/memory/2736-8-0x0000000001110000-0x0000000001434000-memory.dmp	family_quasar

Drops file in Drivers directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\svchost.exe	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
File opened for modification	C:\Windows\system32\drivers\svchost.exe	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
File opened for modification	C:\Windows\system32\drivers\svchost.exe	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2736	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
File opened for modification	C:\Windows\system32\drivers	svchost.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
2444	schtasks.exe
2760	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
Token: SeDebugPrivilege	2736	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2736	svchost.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2736	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2736	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2444	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	31
PID 3052 wrote to memory of 2444	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	31
PID 3052 wrote to memory of 2444	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	31
PID 3052 wrote to memory of 2736	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	33
PID 3052 wrote to memory of 2736	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	33
PID 3052 wrote to memory of 2736	3052	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	33
PID 2736 wrote to memory of 2760	2736	svchost.exe	34
PID 2736 wrote to memory of 2760	2736	svchost.exe	34
PID 2736 wrote to memory of 2760	2736	svchost.exe	34

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\a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
"C:\Users\Admin\AppData\Local\Temp\a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe"
1⤵
- Drops file in Drivers directory
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Svc Name" /sc ONLOGON /tr "C:\Windows\system32\drivers\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2444
- C:\Windows\system32\drivers\svchost.exe
  "C:\Windows\system32\drivers\svchost.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Svc Name" /sc ONLOGON /tr "C:\Windows\system32\drivers\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
ed8587b8361fe7ababea56910e3a7750

SHA1
9c4cf2e76a09b8bed78ae240e6c35deaa4b3f5d7

SHA256
a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98

SHA512
18248abf111d37412df931eece3b28d9314358fb21282c791d7dc45f97fa1a8de7ac5728c8f2687a0a4d648f6fcffcecf54c4e7d6f6c61a3bee017b01f52b6b3

Download Submit
memory/2736-8-0x0000000001110000-0x0000000001434000-memory.dmp

Filesize
3.1MB

Download
memory/2736-9-0x000007FEF5290000-0x000007FEF5C7C000-memory.dmp

Filesize
9.9MB

Download
memory/2736-11-0x000007FEF5290000-0x000007FEF5C7C000-memory.dmp

Filesize
9.9MB

Download
memory/2736-12-0x000007FEF5290000-0x000007FEF5C7C000-memory.dmp

Filesize
9.9MB

Download
memory/3052-0-0x000007FEF5293000-0x000007FEF5294000-memory.dmp

Filesize
4KB

Download
memory/3052-1-0x0000000000CD0000-0x0000000000FF4000-memory.dmp

Filesize
3.1MB

Download
memory/3052-2-0x000007FEF5290000-0x000007FEF5C7C000-memory.dmp

Filesize
9.9MB

Download
memory/3052-10-0x000007FEF5290000-0x000007FEF5C7C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads