quasar | e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/12/2024, 12:33

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General

Target

e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe
Size

3.1MB
MD5

bedd5e5f44b78c79f93e29dc184cfa3d
SHA1

11e7e692b9a6b475f8561f283b2dd59c3cd19bfd
SHA256

e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c
SHA512

3a7924196830b52d4525b897f45feb52ec2aca6cd20437b38437f171424450fd25692bd4c67ccde2cf147f0ed6efcef395ea0e13b24f0cf606214b58cf8284de
SSDEEP

49152:IvzlL26AaNeWgPhlmVqvMQ7XSKzFxNESEtk/iPLoGdVTHHB72eh2NTRR:IvpL26AaNeWgPhlmVqkQ7XSKBxgTE

Score

10^/10

quasar powerstealer spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

powerstealer

192.168.56.1:4782

Mutex

6760d0e9-9df9-4aba-89be-4e5ce3e92cc8

Attributes

encryption_key
057FCAF700E62ACFECC7338C474084AF9B47ABEB
install_name
powerstealer.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

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/1712-1-0x0000000000C40000-0x0000000000F6A000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b93-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4524	powerstealer.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
4860	schtasks.exe
1140	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe
Token: SeDebugPrivilege	4524	powerstealer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4524	powerstealer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 4860	1712	e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe	83
PID 1712 wrote to memory of 4860	1712	e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe	83
PID 1712 wrote to memory of 4524	1712	e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe	85
PID 1712 wrote to memory of 4524	1712	e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe	85
PID 4524 wrote to memory of 1140	4524	powerstealer.exe	86
PID 4524 wrote to memory of 1140	4524	powerstealer.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\e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe
"C:\Users\Admin\AppData\Local\Temp\e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4860
- C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\powerstealer.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1140

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\SubDir\powerstealer.exe

Filesize
3.1MB

MD5
bedd5e5f44b78c79f93e29dc184cfa3d

SHA1
11e7e692b9a6b475f8561f283b2dd59c3cd19bfd

SHA256
e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c

SHA512
3a7924196830b52d4525b897f45feb52ec2aca6cd20437b38437f171424450fd25692bd4c67ccde2cf147f0ed6efcef395ea0e13b24f0cf606214b58cf8284de

Download Submit
memory/1712-0-0x00007FF8BCC83000-0x00007FF8BCC85000-memory.dmp

Filesize
8KB

Download
memory/1712-1-0x0000000000C40000-0x0000000000F6A000-memory.dmp

Filesize
3.2MB

Download
memory/1712-2-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/1712-9-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/4524-10-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/4524-11-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/4524-12-0x000000001B6C0000-0x000000001B710000-memory.dmp

Filesize
320KB

Download
memory/4524-13-0x000000001C000000-0x000000001C0B2000-memory.dmp

Filesize
712KB

Download
memory/4524-14-0x00007FF8BCC80000-0x00007FF8BD741000-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