quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy (2).exe
Size

409KB
MD5

b70fdac25a99501e3cae11f1b775249e
SHA1

3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71
SHA256

51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246
SHA512

43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44
SSDEEP

12288:gpbJjGut6AoE3hVVdFaC/eZPTMTDlpgfJCKuMsVs:oVaurMLcDlpRKai

Score

10^/10

quasar seroxen persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SeroXen

C2

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

21 ip-api.com
30 api.ipify.org
2804 schtasks.exe

flow	ioc
21	ip-api.com
30	api.ipify.org
2804	schtasks.exe

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5088-1-0x0000000000B10000-0x0000000000B7C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

380 Client.exe

pid	process
380	Client.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Uni - Copy (2).exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SeroXen = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\uni\\Uni - Copy (2).exe\""	Uni - Copy (2).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

30 api.ipify.org
21 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

2804 schtasks.exe
1452 SCHTASKS.exe
4300 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Uni - Copy (2).exeClient.exe

description pid process

Token: SeDebugPrivilege 5088 Uni - Copy (2).exe
Token: SeDebugPrivilege 380 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

380 Client.exe

flow	ioc
30	api.ipify.org
21	ip-api.com

pid	process
2804	schtasks.exe
1452	SCHTASKS.exe
4300	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	5088	Uni - Copy (2).exe
Token: SeDebugPrivilege	380	Client.exe

pid	process
380	Client.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Uni - Copy (2).exeClient.exe

description	pid	process	target process
PID 5088 wrote to memory of 2804	5088	Uni - Copy (2).exe	schtasks.exe
PID 5088 wrote to memory of 2804	5088	Uni - Copy (2).exe	schtasks.exe
PID 5088 wrote to memory of 2804	5088	Uni - Copy (2).exe	schtasks.exe
PID 5088 wrote to memory of 380	5088	Uni - Copy (2).exe	Client.exe
PID 5088 wrote to memory of 380	5088	Uni - Copy (2).exe	Client.exe
PID 5088 wrote to memory of 380	5088	Uni - Copy (2).exe	Client.exe
PID 5088 wrote to memory of 1452	5088	Uni - Copy (2).exe	SCHTASKS.exe
PID 5088 wrote to memory of 1452	5088	Uni - Copy (2).exe	SCHTASKS.exe
PID 5088 wrote to memory of 1452	5088	Uni - Copy (2).exe	SCHTASKS.exe
PID 380 wrote to memory of 4300	380	Client.exe	schtasks.exe
PID 380 wrote to memory of 4300	380	Client.exe	schtasks.exe
PID 380 wrote to memory of 4300	380	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2).exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2).exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5088

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2).exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:2804

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:380

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:4300

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (2).exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (2).exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:1452

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=1404 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:4448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
409KB

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/380-22-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/380-21-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/380-20-0x0000000006C90000-0x0000000006C9A000-memory.dmp

Filesize
40KB

Download
memory/380-18-0x00000000065D0000-0x000000000660C000-memory.dmp

Filesize
240KB

Download
memory/380-15-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/380-13-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/5088-4-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/5088-8-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/5088-6-0x00000000066F0000-0x0000000006702000-memory.dmp

Filesize
72KB

Download
memory/5088-14-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/5088-5-0x0000000005590000-0x00000000055F6000-memory.dmp

Filesize
408KB

Download
memory/5088-17-0x0000000074EA0000-0x0000000075650000-memory.dmp

Filesize
7.7MB

Download
memory/5088-0-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/5088-3-0x0000000005630000-0x00000000056C2000-memory.dmp

Filesize
584KB

Download
memory/5088-2-0x0000000005B40000-0x00000000060E4000-memory.dmp

Filesize
5.6MB

Download
memory/5088-1-0x0000000000B10000-0x0000000000B7C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads