quasar | 1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b

Analysis

max time kernel
125s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2025, 20:00

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General

Target

1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe
Size

3.1MB
MD5

3c7bf1e80abf4d7d6dc60e207425f519
SHA1

9c65bc3a1688b64032ba3ef8cb5676cacfa34759
SHA256

1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b
SHA512

a6d7e20fa6340e18470442a10a84e79442185c2e26939e6742cb7bc5f08acec27a50172a47b4cf2f8cce816cade61a60f127430cd8f25174bb98885b67f30663
SSDEEP

49152:CvDI22SsaNYfdPBldt698dBcjHZu/kBxnLoGdhTHHB72eh2NT:Cv822SsaNYfdPBldt6+dBcjHk/g

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.176:4782

Mutex

8ac8cfe4-abbd-4c20-8ef9-30391cf64a5b

Attributes

encryption_key
B236022E1D7BEC08D8EF90B6C25D471BFC7F95CB
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/4692-1-0x00000000003B0000-0x00000000006D4000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023cb1-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1492	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4692	1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe
Token: SeDebugPrivilege	1492	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1492	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 1492	4692	1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe	83
PID 4692 wrote to memory of 1492	4692	1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe	83

C:\Users\Admin\AppData\Local\Temp\1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe
"C:\Users\Admin\AppData\Local\Temp\1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4692
- 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:1492

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

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

Filesize
3.1MB

MD5
3c7bf1e80abf4d7d6dc60e207425f519

SHA1
9c65bc3a1688b64032ba3ef8cb5676cacfa34759

SHA256
1250343116e00d7d7125b738253aeba67e40f0f9ab649bc6a4161580f824819b

SHA512
a6d7e20fa6340e18470442a10a84e79442185c2e26939e6742cb7bc5f08acec27a50172a47b4cf2f8cce816cade61a60f127430cd8f25174bb98885b67f30663

Download Submit
memory/1492-9-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1492-11-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/1492-12-0x000000001BC90000-0x000000001BCE0000-memory.dmp

Filesize
320KB

Download
memory/1492-13-0x000000001DA20000-0x000000001DAD2000-memory.dmp

Filesize
712KB

Download
memory/1492-14-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/4692-0-0x00007FFDC0733000-0x00007FFDC0735000-memory.dmp

Filesize
8KB

Download
memory/4692-1-0x00000000003B0000-0x00000000006D4000-memory.dmp

Filesize
3.1MB

Download
memory/4692-2-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download
memory/4692-10-0x00007FFDC0730000-0x00007FFDC11F1000-memory.dmp

Filesize
10.8MB

Download