quasar | e423c72ea1a279e367f4f0a3dc7d703c67f6d09009ed9d58f9c73dac35d0a85c

Analysis

max time kernel
126s
max time network
137s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 10:06

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General

Target

Discord.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 3 IoCs

resource	yara_rule
behavioral1/memory/2760-1-0x0000000000D10000-0x000000000103A000-memory.dmp	family_quasar
behavioral1/files/0x0008000000015e8f-6.dat	family_quasar
behavioral1/memory/2484-9-0x0000000000210000-0x000000000053A000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2484	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
2764	schtasks.exe
2636	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	Discord.exe
Token: SeDebugPrivilege	2484	powerstealer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2484	powerstealer.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2764	2760	Discord.exe	30
PID 2760 wrote to memory of 2764	2760	Discord.exe	30
PID 2760 wrote to memory of 2764	2760	Discord.exe	30
PID 2760 wrote to memory of 2484	2760	Discord.exe	32
PID 2760 wrote to memory of 2484	2760	Discord.exe	32
PID 2760 wrote to memory of 2484	2760	Discord.exe	32
PID 2484 wrote to memory of 2636	2484	powerstealer.exe	33
PID 2484 wrote to memory of 2636	2484	powerstealer.exe	33
PID 2484 wrote to memory of 2636	2484	powerstealer.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\Discord.exe
"C:\Users\Admin\AppData\Local\Temp\Discord.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2764
- 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:2484
- - 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:2636

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/2484-11-0x000007FEF6780000-0x000007FEF716C000-memory.dmp

Filesize
9.9MB

Download
memory/2484-10-0x000007FEF6780000-0x000007FEF716C000-memory.dmp

Filesize
9.9MB

Download
memory/2484-9-0x0000000000210000-0x000000000053A000-memory.dmp

Filesize
3.2MB

Download
memory/2484-12-0x000007FEF6780000-0x000007FEF716C000-memory.dmp

Filesize
9.9MB

Download
memory/2760-0-0x000007FEF6783000-0x000007FEF6784000-memory.dmp

Filesize
4KB

Download
memory/2760-1-0x0000000000D10000-0x000000000103A000-memory.dmp

Filesize
3.2MB

Download
memory/2760-2-0x000007FEF6780000-0x000007FEF716C000-memory.dmp

Filesize
9.9MB

Download
memory/2760-8-0x000007FEF6780000-0x000007FEF716C000-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