quasar | e7075f9a99683b8b4f07d99ecd4f760e5e9d3a49907ca15560759b4c0dc6f5fd

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2024 13:56

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General

Target

m3201482138319m23.exe
Size

3.3MB
MD5

8fbbb4a62b7687217f6784b86e3ae0fb
SHA1

c06e18e0fbece91d426196378e14f850c8eb8374
SHA256

e7075f9a99683b8b4f07d99ecd4f760e5e9d3a49907ca15560759b4c0dc6f5fd
SHA512

716580fc9594fe3a4f1f0014af0aee9513a7f502ce613187d99ae2b4614f5709cc5d702341eebd7de0006e3dc25e18c0b3f146d7c845d4681bc62190dc23c33c
SSDEEP

49152:Lvkt62XlaSFNWPjljiFa2RoUYIUeRJ6RbR3LoGde2THHB72eh2NT:Lv462XlaSFNWPjljiFXRoUYIUeRJ6zu

Score

10^/10

quasar kaspersky spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Kaspersky

192.168.1.8:4782

Mutex

e4ff6046-0d9e-4bca-92f0-47dc12c241c9

Attributes

encryption_key
413A5CFEC3EDE828D57DAABC5058E2D2758B4DB3
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Kaspersky
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1908-1-0x0000000000EC0000-0x000000000120C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

1224 Client.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2232 schtasks.exe
3208 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

m3201482138319m23.exeClient.exe

description pid process

Token: SeDebugPrivilege 1908 m3201482138319m23.exe
Token: SeDebugPrivilege 1224 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

1224 Client.exe

pid	process
1224	Client.exe

pid	process
2232	schtasks.exe
3208	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1908	m3201482138319m23.exe
Token: SeDebugPrivilege	1224	Client.exe

pid	process
1224	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

m3201482138319m23.exeClient.exe

description	pid	process	target process
PID 1908 wrote to memory of 2232	1908	m3201482138319m23.exe	schtasks.exe
PID 1908 wrote to memory of 2232	1908	m3201482138319m23.exe	schtasks.exe
PID 1908 wrote to memory of 1224	1908	m3201482138319m23.exe	Client.exe
PID 1908 wrote to memory of 1224	1908	m3201482138319m23.exe	Client.exe
PID 1224 wrote to memory of 3208	1224	Client.exe	schtasks.exe
PID 1224 wrote to memory of 3208	1224	Client.exe	schtasks.exe

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\m3201482138319m23.exe
"C:\Users\Admin\AppData\Local\Temp\m3201482138319m23.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Kaspersky" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2232

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1224

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Kaspersky" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:3208

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
3.3MB

MD5
8fbbb4a62b7687217f6784b86e3ae0fb

SHA1
c06e18e0fbece91d426196378e14f850c8eb8374

SHA256
e7075f9a99683b8b4f07d99ecd4f760e5e9d3a49907ca15560759b4c0dc6f5fd

SHA512
716580fc9594fe3a4f1f0014af0aee9513a7f502ce613187d99ae2b4614f5709cc5d702341eebd7de0006e3dc25e18c0b3f146d7c845d4681bc62190dc23c33c

Download Submit
memory/1224-10-0x00007FFD82D80000-0x00007FFD83841000-memory.dmp

Filesize
10.8MB

Download
memory/1224-11-0x00007FFD82D80000-0x00007FFD83841000-memory.dmp

Filesize
10.8MB

Download
memory/1224-12-0x000000001B3D0000-0x000000001B420000-memory.dmp

Filesize
320KB

Download
memory/1224-13-0x000000001D590000-0x000000001D642000-memory.dmp

Filesize
712KB

Download
memory/1224-14-0x00007FFD82D80000-0x00007FFD83841000-memory.dmp

Filesize
10.8MB

Download
memory/1908-0-0x00007FFD82D83000-0x00007FFD82D85000-memory.dmp

Filesize
8KB

Download
memory/1908-1-0x0000000000EC0000-0x000000000120C000-memory.dmp

Filesize
3.3MB

Download
memory/1908-2-0x00007FFD82D80000-0x00007FFD83841000-memory.dmp

Filesize
10.8MB

Download
memory/1908-9-0x00007FFD82D80000-0x00007FFD83841000-memory.dmp

Filesize
10.8MB

Download