quasar | 9fda62581f43e3936e371ced328374f97a7ede2b9fff3748bf618977b1da495a

Analysis

max time kernel
149s
max time network
135s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 06:10

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General

Target

SerialChecker.exe
Size

3.1MB
MD5

70fa564a25bdd50a78764228f591f9a0
SHA1

2d025703005c25bc35b4755321844f3adc41c974
SHA256

9fda62581f43e3936e371ced328374f97a7ede2b9fff3748bf618977b1da495a
SHA512

ce33af378f45752148de566ec1281a4e212b5af8e9d9d942f833f8d35a5c5d84f8657f17dc053d4bd56ae6ea556122de8039d0cab8c37d6eb5af9f89041eaff3
SSDEEP

49152:Ovkt62XlaSFNWPjljiFa2RoUYIbnp9nr1oGdI2THHB72eh2NT:Ov462XlaSFNWPjljiFXRoUYI7p9nZ

Score

10^/10

quasar fn spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

192.168.1.217:4782

Mutex

5c3e1592-9532-4a55-9a67-38ea1d723d1f

Attributes

encryption_key
53C48FEB4994411E81FCC7855A2076C90E2AC3C1
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Update
subdirectory
FN

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/2976-1-0x0000000000AD0000-0x0000000000DF4000-memory.dmp	family_quasar
behavioral1/files/0x0017000000018657-6.dat	family_quasar
behavioral1/memory/2388-8-0x0000000000260000-0x0000000000584000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2388	Client.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
2104	schtasks.exe
2628	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2976	SerialChecker.exe
Token: SeDebugPrivilege	2388	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2388	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2976 wrote to memory of 2104	2976	SerialChecker.exe	30
PID 2976 wrote to memory of 2104	2976	SerialChecker.exe	30
PID 2976 wrote to memory of 2104	2976	SerialChecker.exe	30
PID 2976 wrote to memory of 2388	2976	SerialChecker.exe	32
PID 2976 wrote to memory of 2388	2976	SerialChecker.exe	32
PID 2976 wrote to memory of 2388	2976	SerialChecker.exe	32
PID 2388 wrote to memory of 2628	2388	Client.exe	33
PID 2388 wrote to memory of 2628	2388	Client.exe	33
PID 2388 wrote to memory of 2628	2388	Client.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\SerialChecker.exe
"C:\Users\Admin\AppData\Local\Temp\SerialChecker.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\FN\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2104
- C:\Users\Admin\AppData\Roaming\FN\Client.exe
  "C:\Users\Admin\AppData\Roaming\FN\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\FN\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2628

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\FN\Client.exe

Filesize
3.1MB

MD5
70fa564a25bdd50a78764228f591f9a0

SHA1
2d025703005c25bc35b4755321844f3adc41c974

SHA256
9fda62581f43e3936e371ced328374f97a7ede2b9fff3748bf618977b1da495a

SHA512
ce33af378f45752148de566ec1281a4e212b5af8e9d9d942f833f8d35a5c5d84f8657f17dc053d4bd56ae6ea556122de8039d0cab8c37d6eb5af9f89041eaff3

Download Submit
memory/2388-8-0x0000000000260000-0x0000000000584000-memory.dmp

Filesize
3.1MB

Download
memory/2388-10-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2388-11-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2388-12-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

Filesize
4KB

Download
memory/2976-1-0x0000000000AD0000-0x0000000000DF4000-memory.dmp

Filesize
3.1MB

Download
memory/2976-2-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

Filesize
9.9MB

Download
memory/2976-9-0x000007FEF5CD0000-0x000007FEF66BC000-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