quasar | ad7d21da6daf2dc93d762a7b415d21d3d996928a24c0e5817e482414571091d3

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
26-12-2024 16:42

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General

Target

Client-built2.exe
Size

3.1MB
MD5

1bd62b73641d08b58d05ddc88a21f528
SHA1

db8afa72ff4b8ae9493555841cadcbd764037c96
SHA256

ad7d21da6daf2dc93d762a7b415d21d3d996928a24c0e5817e482414571091d3
SHA512

dea5f626c1f4af902b7f1c17dfc14e179ba4f8865054697cdbd39eabd9bbdbb9ab75cba957406332c6b13466cb3167a457ac2d9c00eaa3fd3028e5169b4177de
SSDEEP

49152:7v4go2QSaNpzyPllgamb0CZof/J/Cc3rmz2xoGdTTHHB72eh2NT:7vpo2QSaNpzyPllgamYCZof/JKc3Z

Score

10^/10

quasar something cool spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

something cool

waste-allergy-insured-branches.trycloudflare.com:4782

waste-allergy-insured-branches.trycloudflare.com:53242

Mutex

182d06ff-972f-4a96-b344-59a01694d374

Attributes

encryption_key
C5904FDD788EA00F921C538B9FE80C0B0A0DE728
install_name
MinecraftUpdater.exe
log_directory
Logs
reconnect_delay
3000
startup_key
MinecraftUpdater
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/4404-1-0x0000000000B60000-0x0000000000E84000-memory.dmp	family_quasar
behavioral2/files/0x001c00000002aaa5-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4580	MinecraftUpdater.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
1912	schtasks.exe
4204	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4404	Client-built2.exe
Token: SeDebugPrivilege	4580	MinecraftUpdater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4580	MinecraftUpdater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 1912	4404	Client-built2.exe	77
PID 4404 wrote to memory of 1912	4404	Client-built2.exe	77
PID 4404 wrote to memory of 4580	4404	Client-built2.exe	79
PID 4404 wrote to memory of 4580	4404	Client-built2.exe	79
PID 4580 wrote to memory of 4204	4580	MinecraftUpdater.exe	80
PID 4580 wrote to memory of 4204	4580	MinecraftUpdater.exe	80

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\Client-built2.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "MinecraftUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1912
- C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4580
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "MinecraftUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4204

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\MinecraftUpdater.exe

Filesize
3.1MB

MD5
1bd62b73641d08b58d05ddc88a21f528

SHA1
db8afa72ff4b8ae9493555841cadcbd764037c96

SHA256
ad7d21da6daf2dc93d762a7b415d21d3d996928a24c0e5817e482414571091d3

SHA512
dea5f626c1f4af902b7f1c17dfc14e179ba4f8865054697cdbd39eabd9bbdbb9ab75cba957406332c6b13466cb3167a457ac2d9c00eaa3fd3028e5169b4177de

Download Submit
memory/4404-0-0x00007FFD97713000-0x00007FFD97715000-memory.dmp

Filesize
8KB

Download
memory/4404-1-0x0000000000B60000-0x0000000000E84000-memory.dmp

Filesize
3.1MB

Download
memory/4404-2-0x00007FFD97710000-0x00007FFD981D2000-memory.dmp

Filesize
10.8MB

Download
memory/4404-10-0x00007FFD97710000-0x00007FFD981D2000-memory.dmp

Filesize
10.8MB

Download
memory/4580-9-0x00007FFD97710000-0x00007FFD981D2000-memory.dmp

Filesize
10.8MB

Download
memory/4580-11-0x00007FFD97710000-0x00007FFD981D2000-memory.dmp

Filesize
10.8MB

Download
memory/4580-12-0x000000001BBE0000-0x000000001BC30000-memory.dmp

Filesize
320KB

Download
memory/4580-13-0x000000001C420000-0x000000001C4D2000-memory.dmp

Filesize
712KB

Download
memory/4580-14-0x00007FFD97710000-0x00007FFD981D2000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads