quasar | 942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a

Analysis

max time kernel
149s
max time network
135s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
17-12-2024 06:29

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General

Target

Client-built-Playit.exe
Size

3.1MB
MD5

c3e8ea545254bb9d01bff3f53668e04f
SHA1

84bfec02d33d829736407744504c271f71c21078
SHA256

942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a
SHA512

84933b3fc7a888673079c2fccf987189777fc20831eb76cc3f4b94cf960c0c74831b98892781f2e9053c97de7818922fd6a950a8aaccaf696903b536972f0b38
SSDEEP

49152:OUd1/DM2zv8aMlqCPwln5+Hjdh+Euvr9+VZzNAxoGnjwTHHB72eh2NTe:OUPrM2zEaMlqCPwln5+Ddh+Zvr4zq1k

Score

10^/10

quasar rat1 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

rat1

147.185.221.24:15249

Mutex

da67ff1b-f911-4ad4-a51c-c7c5bd13aeb3

Attributes

encryption_key
AB7A97D9E0F9B0A44190A0D500EAB7AF37629802
install_name
System32.exe
log_directory
Logs
reconnect_delay
3000
startup_key
System32
subdirectory
System32

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/1740-1-0x00000000010D0000-0x00000000013F4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000016c53-6.dat	family_quasar
behavioral1/memory/2372-7-0x0000000000B90000-0x0000000000EB4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2372	System32.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
2404	schtasks.exe
1736	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1740	Client-built-Playit.exe
Token: SeDebugPrivilege	2372	System32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2372	System32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1736	1740	Client-built-Playit.exe	30
PID 1740 wrote to memory of 1736	1740	Client-built-Playit.exe	30
PID 1740 wrote to memory of 1736	1740	Client-built-Playit.exe	30
PID 1740 wrote to memory of 2372	1740	Client-built-Playit.exe	32
PID 1740 wrote to memory of 2372	1740	Client-built-Playit.exe	32
PID 1740 wrote to memory of 2372	1740	Client-built-Playit.exe	32
PID 2372 wrote to memory of 2404	2372	System32.exe	33
PID 2372 wrote to memory of 2404	2372	System32.exe	33
PID 2372 wrote to memory of 2404	2372	System32.exe	33

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\Client-built-Playit.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built-Playit.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "System32" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\System32.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1736
- C:\Users\Admin\AppData\Roaming\System32\System32.exe
  "C:\Users\Admin\AppData\Roaming\System32\System32.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "System32" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\System32\System32.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2404

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:\Users\Admin\AppData\Roaming\System32\System32.exe

Filesize
3.1MB

MD5
c3e8ea545254bb9d01bff3f53668e04f

SHA1
84bfec02d33d829736407744504c271f71c21078

SHA256
942e216bf41aea0642c7f219560630dc21d29219920e90be79e990e6387a3a9a

SHA512
84933b3fc7a888673079c2fccf987189777fc20831eb76cc3f4b94cf960c0c74831b98892781f2e9053c97de7818922fd6a950a8aaccaf696903b536972f0b38

Download Submit
memory/1740-0-0x000007FEF5713000-0x000007FEF5714000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x00000000010D0000-0x00000000013F4000-memory.dmp

Filesize
3.1MB

Download
memory/1740-2-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/1740-10-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2372-9-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2372-8-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2372-7-0x0000000000B90000-0x0000000000EB4000-memory.dmp

Filesize
3.1MB

Download
memory/2372-11-0x000007FEF5710000-0x000007FEF60FC000-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