quasar | 6e8ea3c47a8e46719c4242a3fb2f5bfa83d9e561f60d56309e98031b94392305

Analysis

max time kernel
20s
max time network
22s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
25-11-2024 13:53

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General

Target

i - Copy (3).exe
Size

3.1MB
MD5

4ba9f63ed84485401f6c5557955fe62a
SHA1

04e7833e655d9a3a5f8aa3052f3567fb4b28edc4
SHA256

8079e8c75a7520eea86a78e35f77ce90be938f59a9718758719a4512ba28999e
SHA512

d9626c179a380e24c93ed73ac82cedad9d0ed13ae16d549f55aebd35e3217bd54c46920fab851aad9f5e4f35b707297347af258286ff0a427d2744ea08cd5ded
SSDEEP

49152:3vyI22SsaNYfdPBldt698dBcjHVv6oBuarYLoGdxTHHB72eh2NT:3vf22SsaNYfdPBldt6+dBcjHR6oBu

Score

10^/10

quasar free cheetos spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Free Cheetos

192.168.50.61:4782

Mutex

b9f33b8e-e35e-4e4c-aff8-7b28dddec418

Attributes

encryption_key
6F5247E9D7D00C08CE63C6211A524818EA6DDA24
install_name
Client.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

Processes:

resource	yara_rule
behavioral1/memory/3936-1-0x0000000000B90000-0x0000000000EB4000-memory.dmp	family_quasar
behavioral1/files/0x0029000000045053-3.dat	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid	Process
3264	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

Processes:

schtasks.exeschtasks.exe

pid	Process
3908	schtasks.exe
116	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

i - Copy (3).exeClient.exe

description	pid	Process
Token: SeDebugPrivilege	3936	i - Copy (3).exe
Token: SeDebugPrivilege	3264	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid	Process
3264	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

i - Copy (3).exeClient.exe

description	pid	Process	procid_target
PID 3936 wrote to memory of 3908	3936	i - Copy (3).exe	80
PID 3936 wrote to memory of 3908	3936	i - Copy (3).exe	80
PID 3936 wrote to memory of 3264	3936	i - Copy (3).exe	82
PID 3936 wrote to memory of 3264	3936	i - Copy (3).exe	82
PID 3264 wrote to memory of 116	3264	Client.exe	85
PID 3264 wrote to memory of 116	3264	Client.exe	85

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\i - Copy (3).exe
"C:\Users\Admin\AppData\Local\Temp\i - Copy (3).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3908
- 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:3264
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:116

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
4ba9f63ed84485401f6c5557955fe62a

SHA1
04e7833e655d9a3a5f8aa3052f3567fb4b28edc4

SHA256
8079e8c75a7520eea86a78e35f77ce90be938f59a9718758719a4512ba28999e

SHA512
d9626c179a380e24c93ed73ac82cedad9d0ed13ae16d549f55aebd35e3217bd54c46920fab851aad9f5e4f35b707297347af258286ff0a427d2744ea08cd5ded

Download Submit
memory/3264-5-0x00007FFD27B10000-0x00007FFD285D2000-memory.dmp

Filesize
10.8MB

Download
memory/3264-7-0x00007FFD27B10000-0x00007FFD285D2000-memory.dmp

Filesize
10.8MB

Download
memory/3264-8-0x000000001B490000-0x000000001B4E0000-memory.dmp

Filesize
320KB

Download
memory/3264-9-0x000000001CC30000-0x000000001CCE2000-memory.dmp

Filesize
712KB

Download
memory/3264-10-0x00007FFD27B10000-0x00007FFD285D2000-memory.dmp

Filesize
10.8MB

Download
memory/3936-0-0x00007FFD27B13000-0x00007FFD27B15000-memory.dmp

Filesize
8KB

Download
memory/3936-1-0x0000000000B90000-0x0000000000EB4000-memory.dmp

Filesize
3.1MB

Download
memory/3936-2-0x00007FFD27B10000-0x00007FFD285D2000-memory.dmp

Filesize
10.8MB

Download
memory/3936-6-0x00007FFD27B10000-0x00007FFD285D2000-memory.dmp

Filesize
10.8MB

Download