quasar | 8e5a34b932374eae6c3d0d71bef8d34f4f91cc31908ff596533f5fec1a5ff592

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 06:44

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General

Target

Client-builtlocal.exe
Size

3.1MB
MD5

02130800d200407967cb08abbb0aeefe
SHA1

6df9a3b4879c3d34b51826bd1d9ad0f64c93d11e
SHA256

8e5a34b932374eae6c3d0d71bef8d34f4f91cc31908ff596533f5fec1a5ff592
SHA512

dccf995ac63f9386c909608bd948fe41b64aae9df87c6db2cf158de933dd3d8eaabd3215da98911d51af48fab71b992ea72eed3d807c4ebe0d6ef9927c78a84d
SSDEEP

49152:nvrlL26AaNeWgPhlmVqvMQ7XSKvgEcqBxZCoGdYTHHB72eh2NT:nvRL26AaNeWgPhlmVqkQ7XSKHcd

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

suport24.ddns.net:4782

192.168.1.74:4782

Mutex

b4ad83f8-b608-477d-8395-2274bcaab6d1

Attributes

encryption_key
62EF51244AF3535A6A9C77206CD89D5BFECD7E4E
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

resource	yara_rule
behavioral2/memory/1700-1-0x0000000000D40000-0x0000000001064000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b98-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3672	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	Client-builtlocal.exe
Token: SeDebugPrivilege	3672	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3672	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 3672	1700	Client-builtlocal.exe	83
PID 1700 wrote to memory of 3672	1700	Client-builtlocal.exe	83

C:\Users\Admin\AppData\Local\Temp\Client-builtlocal.exe
"C:\Users\Admin\AppData\Local\Temp\Client-builtlocal.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- 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
  PID:3672

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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

Filesize
3.1MB

MD5
02130800d200407967cb08abbb0aeefe

SHA1
6df9a3b4879c3d34b51826bd1d9ad0f64c93d11e

SHA256
8e5a34b932374eae6c3d0d71bef8d34f4f91cc31908ff596533f5fec1a5ff592

SHA512
dccf995ac63f9386c909608bd948fe41b64aae9df87c6db2cf158de933dd3d8eaabd3215da98911d51af48fab71b992ea72eed3d807c4ebe0d6ef9927c78a84d

Download Submit
memory/1700-0-0x00007FFD36353000-0x00007FFD36355000-memory.dmp

Filesize
8KB

Download
memory/1700-1-0x0000000000D40000-0x0000000001064000-memory.dmp

Filesize
3.1MB

Download
memory/1700-2-0x00007FFD36350000-0x00007FFD36E11000-memory.dmp

Filesize
10.8MB

Download
memory/1700-10-0x00007FFD36350000-0x00007FFD36E11000-memory.dmp

Filesize
10.8MB

Download
memory/3672-9-0x00007FFD36350000-0x00007FFD36E11000-memory.dmp

Filesize
10.8MB

Download
memory/3672-11-0x00007FFD36350000-0x00007FFD36E11000-memory.dmp

Filesize
10.8MB

Download
memory/3672-12-0x000000001BCE0000-0x000000001BD30000-memory.dmp

Filesize
320KB

Download
memory/3672-13-0x000000001C320000-0x000000001C3D2000-memory.dmp

Filesize
712KB

Download
memory/3672-14-0x00007FFD36350000-0x00007FFD36E11000-memory.dmp

Filesize
10.8MB

Download