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

2 ip-api.com
2528 schtasks.exe
6 api.ipify.org

flow	ioc
2	ip-api.com
2528	schtasks.exe
6	api.ipify.org

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2884-1-0x00000000012E0000-0x000000000134C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral1/memory/2724-10-0x0000000000330000-0x000000000039C000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exejciTE3pTPTDR.exe

pid process

2724 Client.exe
1124 jciTE3pTPTDR.exe
Loads dropped DLL 2 IoCs

Processes:

Uni - Copy (2).exeClient.exe

pid process

2884 Uni - Copy (2).exe
2724 Client.exe

pid	process
2724	Client.exe
1124	jciTE3pTPTDR.exe

pid	process
2884	Uni - Copy (2).exe
2724	Client.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

StikyNot.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\RESTART_STICKY_NOTES = "C:\\Windows\\system32\\StikyNot.exe"	StikyNot.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

2 ip-api.com
6 api.ipify.org
Drops file in Windows directory 1 IoCs

Processes:

mspaint.exe

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log mspaint.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exeSCHTASKS.exeSCHTASKS.exe

pid process

2528 schtasks.exe
2612 schtasks.exe
2852 SCHTASKS.exe
2964 SCHTASKS.exe
Modifies registry class 1 IoCs

Processes:

rundll32.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings rundll32.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

vlc.exe

pid process

2644 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

2644 vlc.exe

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

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	mspaint.exe

pid	process
2528	schtasks.exe
2612	schtasks.exe
2852	SCHTASKS.exe
2964	SCHTASKS.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe

pid	process
2644	vlc.exe

pid	process
2644	vlc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Uni - Copy (2).exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	2884	Uni - Copy (2).exe
Token: SeDebugPrivilege	2724	Client.exe
Token: 33	1056	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1056	AUDIODG.EXE
Token: 33	1056	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1056	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 10 IoCs

Processes:

vlc.exeStikyNot.exe

pid process

2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
716 StikyNot.exe
716 StikyNot.exe
Suspicious use of SendNotifyMessage 7 IoCs

Processes:

vlc.exe

pid process

2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
2644 vlc.exe
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

Client.exejciTE3pTPTDR.exevlc.exemspaint.exe

pid process

2724 Client.exe
1124 jciTE3pTPTDR.exe
2644 vlc.exe
2356 mspaint.exe
2356 mspaint.exe
2356 mspaint.exe
2356 mspaint.exe

pid	process
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
716	StikyNot.exe
716	StikyNot.exe

pid	process
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe
2644	vlc.exe

pid	process
2724	Client.exe
1124	jciTE3pTPTDR.exe
2644	vlc.exe
2356	mspaint.exe
2356	mspaint.exe
2356	mspaint.exe
2356	mspaint.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

Uni - Copy (2).exeClient.exe

description	pid	process	target process
PID 2884 wrote to memory of 2528	2884	Uni - Copy (2).exe	schtasks.exe
PID 2884 wrote to memory of 2528	2884	Uni - Copy (2).exe	schtasks.exe
PID 2884 wrote to memory of 2528	2884	Uni - Copy (2).exe	schtasks.exe
PID 2884 wrote to memory of 2528	2884	Uni - Copy (2).exe	schtasks.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2884 wrote to memory of 2724	2884	Uni - Copy (2).exe	Client.exe
PID 2724 wrote to memory of 2612	2724	Client.exe	schtasks.exe
PID 2724 wrote to memory of 2612	2724	Client.exe	schtasks.exe
PID 2724 wrote to memory of 2612	2724	Client.exe	schtasks.exe
PID 2724 wrote to memory of 2612	2724	Client.exe	schtasks.exe
PID 2884 wrote to memory of 2852	2884	Uni - Copy (2).exe	SCHTASKS.exe
PID 2884 wrote to memory of 2852	2884	Uni - Copy (2).exe	SCHTASKS.exe
PID 2884 wrote to memory of 2852	2884	Uni - Copy (2).exe	SCHTASKS.exe
PID 2884 wrote to memory of 2852	2884	Uni - Copy (2).exe	SCHTASKS.exe
PID 2724 wrote to memory of 1124	2724	Client.exe	jciTE3pTPTDR.exe
PID 2724 wrote to memory of 1124	2724	Client.exe	jciTE3pTPTDR.exe
PID 2724 wrote to memory of 1124	2724	Client.exe	jciTE3pTPTDR.exe
PID 2724 wrote to memory of 1124	2724	Client.exe	jciTE3pTPTDR.exe
PID 2724 wrote to memory of 2964	2724	Client.exe	SCHTASKS.exe
PID 2724 wrote to memory of 2964	2724	Client.exe	SCHTASKS.exe
PID 2724 wrote to memory of 2964	2724	Client.exe	SCHTASKS.exe
PID 2724 wrote to memory of 2964	2724	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⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884

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:2528

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2724

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:2612

C:\Users\Admin\AppData\Local\Temp\jciTE3pTPTDR.exe
"C:\Users\Admin\AppData\Local\Temp\jciTE3pTPTDR.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1124

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Client.exe" /tr "'C:\Users\Admin\AppData\Roaming\SubDir\Client.exe'" /sc onlogon /rl HIGHEST
3⤵
- Creates scheduled task(s)
PID:2964

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:2852

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x524
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1056

C:\Windows\system32\StikyNot.exe
"C:\Windows\system32\StikyNot.exe"
1⤵
- Adds Run key to start application
- Suspicious use of FindShellTrayWindow
PID:716

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:1744

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\DisableSend.asx"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2644

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\EnableRestart.vssx
1⤵
- Modifies registry class
PID:944

C:\Windows\system32\mspaint.exe
"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\Desktop\ConfirmSearch.rle"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
PID:2356

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\jciTE3pTPTDR.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

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

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/2356-211-0x000007FEF22E0000-0x000007FEF232C000-memory.dmp

Filesize
304KB

Download
memory/2644-53-0x000007FEF3C80000-0x000007FEF3C91000-memory.dmp

Filesize
68KB

Download
memory/2644-57-0x000007FEF3B50000-0x000007FEF3BBF000-memory.dmp

Filesize
444KB

Download
memory/2644-59-0x000007FEF3AD0000-0x000007FEF3B26000-memory.dmp

Filesize
344KB

Download
memory/2644-56-0x000007FEF3BC0000-0x000007FEF3C27000-memory.dmp

Filesize
412KB

Download
memory/2644-46-0x000007FEF3D70000-0x000007FEF3DAF000-memory.dmp

Filesize
252KB

Download
memory/2644-47-0x000007FEF3D40000-0x000007FEF3D61000-memory.dmp

Filesize
132KB

Download
memory/2644-48-0x000007FEF3D20000-0x000007FEF3D38000-memory.dmp

Filesize
96KB

Download
memory/2644-34-0x000000013F030000-0x000000013F128000-memory.dmp

Filesize
992KB

Download
memory/2644-35-0x000007FEF76F0000-0x000007FEF7724000-memory.dmp

Filesize
208KB

Download
memory/2644-36-0x000007FEF51B0000-0x000007FEF5464000-memory.dmp

Filesize
2.7MB

Download
memory/2644-38-0x000007FEF6840000-0x000007FEF6857000-memory.dmp

Filesize
92KB

Download
memory/2644-37-0x000007FEF6B50000-0x000007FEF6B68000-memory.dmp

Filesize
96KB

Download
memory/2644-42-0x000007FEF6590000-0x000007FEF65AD000-memory.dmp

Filesize
116KB

Download
memory/2644-43-0x000007FEF6570000-0x000007FEF6581000-memory.dmp

Filesize
68KB

Download
memory/2644-41-0x000007FEF65B0000-0x000007FEF65C1000-memory.dmp

Filesize
68KB

Download
memory/2644-40-0x000007FEF5060000-0x000007FEF5077000-memory.dmp

Filesize
92KB

Download
memory/2644-39-0x000007FEF6740000-0x000007FEF6751000-memory.dmp

Filesize
68KB

Download
memory/2644-62-0x000007FEF3A50000-0x000007FEF3A67000-memory.dmp

Filesize
92KB

Download
memory/2644-45-0x000007FEF3DB0000-0x000007FEF3FB0000-memory.dmp

Filesize
2.0MB

Download
memory/2644-51-0x000007FEF3CC0000-0x000007FEF3CD1000-memory.dmp

Filesize
68KB

Download
memory/2644-49-0x000007FEF3D00000-0x000007FEF3D11000-memory.dmp

Filesize
68KB

Download
memory/2644-55-0x000007FEF3C30000-0x000007FEF3C60000-memory.dmp

Filesize
192KB

Download
memory/2644-50-0x000007FEF3CE0000-0x000007FEF3CF1000-memory.dmp

Filesize
68KB

Download
memory/2644-52-0x000007FEF3CA0000-0x000007FEF3CBB000-memory.dmp

Filesize
108KB

Download
memory/2644-44-0x000007FEF3FB0000-0x000007FEF505B000-memory.dmp

Filesize
16.7MB

Download
memory/2644-67-0x000007FEF3990000-0x000007FEF39A3000-memory.dmp

Filesize
76KB

Download
memory/2644-66-0x000007FEF39B0000-0x000007FEF39D1000-memory.dmp

Filesize
132KB

Download
memory/2644-65-0x000007FEF39E0000-0x000007FEF39F2000-memory.dmp

Filesize
72KB

Download
memory/2644-68-0x000007FEF2CB0000-0x000007FEF2DC2000-memory.dmp

Filesize
1.1MB

Download
memory/2644-64-0x000007FEF3A00000-0x000007FEF3A11000-memory.dmp

Filesize
68KB

Download
memory/2644-63-0x000007FEF3A20000-0x000007FEF3A43000-memory.dmp

Filesize
140KB

Download
memory/2644-61-0x000007FEF3A70000-0x000007FEF3A94000-memory.dmp

Filesize
144KB

Download
memory/2644-60-0x000007FEF3AA0000-0x000007FEF3AC8000-memory.dmp

Filesize
160KB

Download
memory/2644-58-0x000007FEF3B30000-0x000007FEF3B41000-memory.dmp

Filesize
68KB

Download
memory/2644-54-0x000007FEF3C60000-0x000007FEF3C78000-memory.dmp

Filesize
96KB

Download
memory/2724-11-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-140-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-10-0x0000000000330000-0x000000000039C000-memory.dmp

Filesize
432KB

Download
memory/2724-16-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-15-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-12-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2884-13-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2884-0-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/2884-2-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2884-1-0x00000000012E0000-0x000000000134C000-memory.dmp

Filesize
432KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads