quasar | 956866f40e28cef19324cb165382d5cd5aee0b67c0cb9dd4a39f5bddc6ac56c4

Analysis

max time kernel
259s
max time network
302s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10-06-2024 15:30

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General

Target

uni/Uni - Copy (2) - Copy - Copy - Copy.exe
Size

409KB
MD5

b70fdac25a99501e3cae11f1b775249e
SHA1

3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71
SHA256

51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246
SHA512

43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44
SSDEEP

12288:gpbJjGut6AoE3hVVdFaC/eZPTMTDlpgfJCKuMsVs:oVaurMLcDlpRKai

Score

10^/10

quasar seroxen spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

panel-slave.gl.at.ply.gg:57059

panel-slave.gl.at.ply.gg:27892

Mutex

$Sxr-rpL8EItHN3pqIQQVy2

Attributes

encryption_key
Lme7VBS3l58VwLM69PNM
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SeroXen
subdirectory
SubDir

Signatures

Quasar RAT 3 IoCs
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Processes:

schtasks.exe

flow ioc

1 ip-api.com
6 api.ipify.org
4776 schtasks.exe

flow	ioc
1	ip-api.com
6	api.ipify.org
4776	schtasks.exe

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral31/memory/5044-1-0x0000000000030000-0x000000000009C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

3604 Client.exe
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 ip-api.com
6 api.ipify.org
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeSCHTASKS.exeschtasks.exe

pid process

4776 schtasks.exe
4392 SCHTASKS.exe
3556 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni - Copy (2) - Copy - Copy - Copy.exeClient.exe

description pid process

Token: SeDebugPrivilege 5044 Uni - Copy (2) - Copy - Copy - Copy.exe
Token: SeDebugPrivilege 3604 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

3604 Client.exe

pid	process
3604	Client.exe

flow	ioc
1	ip-api.com
6	api.ipify.org

pid	process
4776	schtasks.exe
4392	SCHTASKS.exe
3556	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	5044	Uni - Copy (2) - Copy - Copy - Copy.exe
Token: SeDebugPrivilege	3604	Client.exe

pid	process
3604	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Uni - Copy (2) - Copy - Copy - Copy.exeClient.exe

description	pid	process	target process
PID 5044 wrote to memory of 4776	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	schtasks.exe
PID 5044 wrote to memory of 4776	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	schtasks.exe
PID 5044 wrote to memory of 4776	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	schtasks.exe
PID 5044 wrote to memory of 3604	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	Client.exe
PID 5044 wrote to memory of 3604	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	Client.exe
PID 5044 wrote to memory of 3604	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	Client.exe
PID 5044 wrote to memory of 4392	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	SCHTASKS.exe
PID 5044 wrote to memory of 4392	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	SCHTASKS.exe
PID 5044 wrote to memory of 4392	5044	Uni - Copy (2) - Copy - Copy - Copy.exe	SCHTASKS.exe
PID 3604 wrote to memory of 3556	3604	Client.exe	schtasks.exe
PID 3604 wrote to memory of 3556	3604	Client.exe	schtasks.exe
PID 3604 wrote to memory of 3556	3604	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2) - Copy - Copy - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2) - Copy - Copy - Copy.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5044

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2) - Copy - Copy - Copy.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:4776

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:3604

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:3556

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (2) - Copy - Copy - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2) - Copy - Copy - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4392

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Filesize
409KB

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/3604-20-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/3604-19-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/3604-18-0x00000000064D0000-0x000000000650E000-memory.dmp

Filesize
248KB

Download
memory/3604-17-0x0000000006BF0000-0x0000000006BFA000-memory.dmp

Filesize
40KB

Download
memory/3604-13-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/3604-12-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/5044-3-0x0000000004950000-0x00000000049E2000-memory.dmp

Filesize
584KB

Download
memory/5044-6-0x0000000004D60000-0x0000000004D72000-memory.dmp

Filesize
72KB

Download
memory/5044-5-0x00000000049F0000-0x0000000004A56000-memory.dmp

Filesize
408KB

Download
memory/5044-15-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/5044-4-0x0000000073EF0000-0x00000000745DE000-memory.dmp

Filesize
6.9MB

Download
memory/5044-0-0x0000000073EFE000-0x0000000073EFF000-memory.dmp

Filesize
4KB

Download
memory/5044-2-0x0000000004D90000-0x000000000528E000-memory.dmp

Filesize
5.0MB

Download
memory/5044-1-0x0000000000030000-0x000000000009C000-memory.dmp

Filesize
432KB

Download