quasar | e7075f9a99683b8b4f07d99ecd4f760e5e9d3a49907ca15560759b4c0dc6f5fd

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
25-05-2024 15:05

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General

Target

Kaspersky_crack.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/5004-1-0x00000000002F0000-0x000000000063C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4480 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

2628 schtasks.exe
4788 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Kaspersky_crack.exeClient.exe

description pid process

Token: SeDebugPrivilege 5004 Kaspersky_crack.exe
Token: SeDebugPrivilege 4480 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4480 Client.exe

pid	process
4480	Client.exe

pid	process
2628	schtasks.exe
4788	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	5004	Kaspersky_crack.exe
Token: SeDebugPrivilege	4480	Client.exe

pid	process
4480	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Kaspersky_crack.exeClient.exe

description	pid	process	target process
PID 5004 wrote to memory of 2628	5004	Kaspersky_crack.exe	schtasks.exe
PID 5004 wrote to memory of 2628	5004	Kaspersky_crack.exe	schtasks.exe
PID 5004 wrote to memory of 4480	5004	Kaspersky_crack.exe	Client.exe
PID 5004 wrote to memory of 4480	5004	Kaspersky_crack.exe	Client.exe
PID 4480 wrote to memory of 4788	4480	Client.exe	schtasks.exe
PID 4480 wrote to memory of 4788	4480	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\Kaspersky_crack.exe
"C:\Users\Admin\AppData\Local\Temp\Kaspersky_crack.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5004

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:2628

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:4480

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:4788

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

Replay Monitor

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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/4480-10-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/4480-11-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/4480-12-0x0000000002A40000-0x0000000002A90000-memory.dmp

Filesize
320KB

Download
memory/4480-13-0x000000001BD80000-0x000000001BE32000-memory.dmp

Filesize
712KB

Download
memory/4480-14-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/5004-0-0x00007FFD900B3000-0x00007FFD900B5000-memory.dmp

Filesize
8KB

Download
memory/5004-1-0x00000000002F0000-0x000000000063C000-memory.dmp

Filesize
3.3MB

Download
memory/5004-2-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/5004-9-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download