quasar | c8e42ac2cdd0927bb4278a4cc154e8c768e8e1b0b5d5a02f04f9b9a16e6a7bf1

Analysis

max time kernel
1190s
max time network
1206s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 15:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Sp00fer.exe
Size

3.1MB
MD5

ff468df2fde593962c6cdb3bdb4614ce
SHA1

870daa4279fa830d1f555f82ad8ac49789a6e31c
SHA256

c8e42ac2cdd0927bb4278a4cc154e8c768e8e1b0b5d5a02f04f9b9a16e6a7bf1
SHA512

e3ce71ee59b3ff3cd989d73b1c59255135bbdff53d6e50695cb24445a4ba1ad3626623e3f39dc4ece1ebae9b82547555cc726e20c5b093926bf9b459c5c7ce0a
SSDEEP

49152:jvulL26AaNeWgPhlmVqvMQ7XSKDy6Rk0vGYLoG2JquTHHB72eh2NT:jveL26AaNeWgPhlmVqkQ7XSKdk4

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

pringelsy-53072.portmap.host:53072

Mutex

6dc28d35-3024-44a7-a559-f9991015fa39

Attributes

encryption_key
3107DF2D44BB6914C55BEA57D100135AB0F278DF
install_name
Client.exe
log_directory
Logs
reconnect_delay
799
startup_key
Quasar Client Startup
subdirectory
Common Files

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2232-1-0x0000000001380000-0x00000000016A4000-memory.dmp	family_quasar
C:\Program Files\Common Files\Client.exe	family_quasar
behavioral1/memory/2980-8-0x0000000000EB0000-0x00000000011D4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

2980 Client.exe

pid	process
2980	Client.exe

Drops file in Program Files directory 3 IoCs

Processes:

Sp00fer.exe

description	ioc	process
File created	C:\Program Files\Common Files\Client.exe	Sp00fer.exe
File opened for modification	C:\Program Files\Common Files\Client.exe	Sp00fer.exe
File opened for modification	C:\Program Files\Common Files	Sp00fer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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

2720 schtasks.exe
2036 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Sp00fer.exeClient.exe

description pid process

Token: SeDebugPrivilege 2232 Sp00fer.exe
Token: SeDebugPrivilege 2980 Client.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Client.exe

pid process

2980 Client.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Client.exe

pid process

2980 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

2980 Client.exe

pid	process
2720	schtasks.exe
2036	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2232	Sp00fer.exe
Token: SeDebugPrivilege	2980	Client.exe

pid	process
2980	Client.exe

pid	process
2980	Client.exe

pid	process
2980	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Sp00fer.exeClient.exe

description	pid	process	target process
PID 2232 wrote to memory of 2036	2232	Sp00fer.exe	schtasks.exe
PID 2232 wrote to memory of 2036	2232	Sp00fer.exe	schtasks.exe
PID 2232 wrote to memory of 2036	2232	Sp00fer.exe	schtasks.exe
PID 2232 wrote to memory of 2980	2232	Sp00fer.exe	Client.exe
PID 2232 wrote to memory of 2980	2232	Sp00fer.exe	Client.exe
PID 2232 wrote to memory of 2980	2232	Sp00fer.exe	Client.exe
PID 2980 wrote to memory of 2720	2980	Client.exe	schtasks.exe
PID 2980 wrote to memory of 2720	2980	Client.exe	schtasks.exe
PID 2980 wrote to memory of 2720	2980	Client.exe	schtasks.exe

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\Sp00fer.exe
"C:\Users\Admin\AppData\Local\Temp\Sp00fer.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\Common Files\Client.exe" /rl HIGHEST /f
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2036

C:\Program Files\Common Files\Client.exe
"C:\Program Files\Common Files\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2980

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\Common Files\Client.exe" /rl HIGHEST /f
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2720

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\Common Files\Client.exe
Filesize
3.1MB

MD5
ff468df2fde593962c6cdb3bdb4614ce

SHA1
870daa4279fa830d1f555f82ad8ac49789a6e31c

SHA256
c8e42ac2cdd0927bb4278a4cc154e8c768e8e1b0b5d5a02f04f9b9a16e6a7bf1

SHA512
e3ce71ee59b3ff3cd989d73b1c59255135bbdff53d6e50695cb24445a4ba1ad3626623e3f39dc4ece1ebae9b82547555cc726e20c5b093926bf9b459c5c7ce0a

Download Submit
memory/2232-0-0x000007FEF5363000-0x000007FEF5364000-memory.dmp

Filesize
4KB

Download
memory/2232-1-0x0000000001380000-0x00000000016A4000-memory.dmp

Filesize
3.1MB

Download
memory/2232-2-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2232-9-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2980-8-0x0000000000EB0000-0x00000000011D4000-memory.dmp

Filesize
3.1MB

Download
memory/2980-10-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2980-11-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2980-12-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download
memory/2980-13-0x000007FEF5360000-0x000007FEF5D4C000-memory.dmp

Filesize
9.9MB

Download