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 2 IoCs

resource	yara_rule
behavioral2/memory/3100-1-0x0000000000420000-0x0000000000744000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b92-8.dat	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
3412	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
980	schtasks.exe
2196	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3100	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe
Token: SeDebugPrivilege	3412	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3412	svchost.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3412	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3412	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 980	3100	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	83
PID 3100 wrote to memory of 980	3100	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	83
PID 3100 wrote to memory of 3412	3100	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	85
PID 3100 wrote to memory of 3412	3100	a722d5c6160420869e7db22ee1bd07f83aa9078f6099370a8b07456e22da4b98N.exe	85
PID 3412 wrote to memory of 2196	3412	svchost.exe	86
PID 3412 wrote to memory of 2196	3412	svchost.exe	86

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:3100
- 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:980
- 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:3412
- - 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:2196

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/3100-1-0x0000000000420000-0x0000000000744000-memory.dmp

Filesize
3.1MB

Download
memory/3100-0-0x00007FFA81103000-0x00007FFA81105000-memory.dmp

Filesize
8KB

Download
memory/3100-2-0x00007FFA81100000-0x00007FFA81BC1000-memory.dmp

Filesize
10.8MB

Download
memory/3100-9-0x00007FFA81100000-0x00007FFA81BC1000-memory.dmp

Filesize
10.8MB

Download
memory/3412-10-0x00007FFA81100000-0x00007FFA81BC1000-memory.dmp

Filesize
10.8MB

Download
memory/3412-11-0x000000001DAF0000-0x000000001DB40000-memory.dmp

Filesize
320KB

Download
memory/3412-12-0x000000001DC00000-0x000000001DCB2000-memory.dmp

Filesize
712KB

Download
memory/3412-13-0x00007FFA81100000-0x00007FFA81BC1000-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