quasar | 956866f40e28cef19324cb165382d5cd5aee0b67c0cb9dd4a39f5bddc6ac56c4

Analysis

max time kernel
296s
max time network
311s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02-06-2024 06:32

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General

Target

uni/Uni - Copy (10) - 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 4 IoCs
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Processes:

schtasks.exe

flow ioc

50 api.ipify.org
58 ip-api.com
4984 schtasks.exe
39 ip-api.com

flow	ioc
50	api.ipify.org
58	ip-api.com
4984	schtasks.exe
39	ip-api.com

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral6/memory/1528-1-0x0000000000A30000-0x0000000000A9C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4876 Client.exe
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

39 ip-api.com
50 api.ipify.org
58 ip-api.com
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

4984 schtasks.exe
4844 SCHTASKS.exe
552 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni - Copy (10) - Copy.exeClient.exe

description pid process

Token: SeDebugPrivilege 1528 Uni - Copy (10) - Copy.exe
Token: SeDebugPrivilege 4876 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4876 Client.exe

pid	process
4876	Client.exe

flow	ioc
39	ip-api.com
50	api.ipify.org
58	ip-api.com

pid	process
4984	schtasks.exe
4844	SCHTASKS.exe
552	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1528	Uni - Copy (10) - Copy.exe
Token: SeDebugPrivilege	4876	Client.exe

pid	process
4876	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Uni - Copy (10) - Copy.exeClient.exe

description	pid	process	target process
PID 1528 wrote to memory of 4984	1528	Uni - Copy (10) - Copy.exe	schtasks.exe
PID 1528 wrote to memory of 4984	1528	Uni - Copy (10) - Copy.exe	schtasks.exe
PID 1528 wrote to memory of 4984	1528	Uni - Copy (10) - Copy.exe	schtasks.exe
PID 1528 wrote to memory of 4876	1528	Uni - Copy (10) - Copy.exe	Client.exe
PID 1528 wrote to memory of 4876	1528	Uni - Copy (10) - Copy.exe	Client.exe
PID 1528 wrote to memory of 4876	1528	Uni - Copy (10) - Copy.exe	Client.exe
PID 1528 wrote to memory of 4844	1528	Uni - Copy (10) - Copy.exe	SCHTASKS.exe
PID 1528 wrote to memory of 4844	1528	Uni - Copy (10) - Copy.exe	SCHTASKS.exe
PID 1528 wrote to memory of 4844	1528	Uni - Copy (10) - Copy.exe	SCHTASKS.exe
PID 4876 wrote to memory of 552	4876	Client.exe	schtasks.exe
PID 4876 wrote to memory of 552	4876	Client.exe	schtasks.exe
PID 4876 wrote to memory of 552	4876	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (10) - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (10) - Copy.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (10) - Copy.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:4984

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:4876

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:552

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (10) - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (10) - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4844

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:3312

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/1528-4-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/1528-16-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/1528-3-0x00000000054E0000-0x0000000005572000-memory.dmp

Filesize
584KB

Download
memory/1528-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/1528-5-0x0000000005680000-0x00000000056E6000-memory.dmp

Filesize
408KB

Download
memory/1528-6-0x0000000006280000-0x0000000006292000-memory.dmp

Filesize
72KB

Download
memory/1528-2-0x0000000005A90000-0x0000000006034000-memory.dmp

Filesize
5.6MB

Download
memory/1528-1-0x0000000000A30000-0x0000000000A9C000-memory.dmp

Filesize
432KB

Download
memory/1528-7-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/4876-14-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4876-13-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4876-17-0x0000000006A60000-0x0000000006A9C000-memory.dmp

Filesize
240KB

Download
memory/4876-19-0x0000000007050000-0x000000000705A000-memory.dmp

Filesize
40KB

Download
memory/4876-20-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/4876-21-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download