quasar | fcd5b843d50ec2f973aaa27e54b6bf045931cc3cb8d9bea4edaade352fe0f7d5

Analysis

max time kernel
300s
max time network
289s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 06:22

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General

Target

uni/Uni - Copy (13) - 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

2 ip-api.com
2576 schtasks.exe
6 api.ipify.org

flow	ioc
2	ip-api.com
2576	schtasks.exe
6	api.ipify.org

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral7/memory/2180-1-0x00000000003D0000-0x000000000043C000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral7/memory/2676-10-0x0000000000AF0000-0x0000000000B5C000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exes2AffC6WfZ0L.exe

pid process

2676 Client.exe
2556 s2AffC6WfZ0L.exe
Loads dropped DLL 2 IoCs

Processes:

Uni - Copy (13) - Copy.exeClient.exe

pid process

2180 Uni - Copy (13) - Copy.exe
2676 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

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

2576 schtasks.exe
2612 SCHTASKS.exe
2484 schtasks.exe
2324 SCHTASKS.exe

pid	process
2676	Client.exe
2556	s2AffC6WfZ0L.exe

pid	process
2180	Uni - Copy (13) - Copy.exe
2676	Client.exe

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

pid	process
2576	schtasks.exe
2612	SCHTASKS.exe
2484	schtasks.exe
2324	SCHTASKS.exe

Modifies registry class 2 IoCs

Processes:

rundll32.exerundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

vlc.exe

pid process

1576 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

1576 vlc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Uni - Copy (13) - Copy.exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	2180	Uni - Copy (13) - Copy.exe
Token: SeDebugPrivilege	2676	Client.exe
Token: 33	1376	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1376	AUDIODG.EXE
Token: 33	1376	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1376	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 16 IoCs

Processes:

vlc.exe

pid	process
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe

Suspicious use of SendNotifyMessage 15 IoCs

Processes:

vlc.exe

pid	process
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe
1576	vlc.exe

Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

Client.exes2AffC6WfZ0L.exevlc.exeAcroRd32.exe

pid process

2676 Client.exe
2556 s2AffC6WfZ0L.exe
1576 vlc.exe
2348 AcroRd32.exe
2348 AcroRd32.exe
2348 AcroRd32.exe

pid	process
2676	Client.exe
2556	s2AffC6WfZ0L.exe
1576	vlc.exe
2348	AcroRd32.exe
2348	AcroRd32.exe
2348	AcroRd32.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

Uni - Copy (13) - Copy.exeClient.exe

description	pid	process	target process
PID 2180 wrote to memory of 2576	2180	Uni - Copy (13) - Copy.exe	schtasks.exe
PID 2180 wrote to memory of 2576	2180	Uni - Copy (13) - Copy.exe	schtasks.exe
PID 2180 wrote to memory of 2576	2180	Uni - Copy (13) - Copy.exe	schtasks.exe
PID 2180 wrote to memory of 2576	2180	Uni - Copy (13) - Copy.exe	schtasks.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2676	2180	Uni - Copy (13) - Copy.exe	Client.exe
PID 2180 wrote to memory of 2612	2180	Uni - Copy (13) - Copy.exe	SCHTASKS.exe
PID 2180 wrote to memory of 2612	2180	Uni - Copy (13) - Copy.exe	SCHTASKS.exe
PID 2180 wrote to memory of 2612	2180	Uni - Copy (13) - Copy.exe	SCHTASKS.exe
PID 2180 wrote to memory of 2612	2180	Uni - Copy (13) - Copy.exe	SCHTASKS.exe
PID 2676 wrote to memory of 2484	2676	Client.exe	schtasks.exe
PID 2676 wrote to memory of 2484	2676	Client.exe	schtasks.exe
PID 2676 wrote to memory of 2484	2676	Client.exe	schtasks.exe
PID 2676 wrote to memory of 2484	2676	Client.exe	schtasks.exe
PID 2676 wrote to memory of 2556	2676	Client.exe	s2AffC6WfZ0L.exe
PID 2676 wrote to memory of 2556	2676	Client.exe	s2AffC6WfZ0L.exe
PID 2676 wrote to memory of 2556	2676	Client.exe	s2AffC6WfZ0L.exe
PID 2676 wrote to memory of 2556	2676	Client.exe	s2AffC6WfZ0L.exe
PID 2676 wrote to memory of 2324	2676	Client.exe	SCHTASKS.exe
PID 2676 wrote to memory of 2324	2676	Client.exe	SCHTASKS.exe
PID 2676 wrote to memory of 2324	2676	Client.exe	SCHTASKS.exe
PID 2676 wrote to memory of 2324	2676	Client.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (13) - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (13) - Copy.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (13) - Copy.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:2576

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:2676

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:2484

C:\Users\Admin\AppData\Local\Temp\s2AffC6WfZ0L.exe
"C:\Users\Admin\AppData\Local\Temp\s2AffC6WfZ0L.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2556

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:2324

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (13) - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (13) - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2612

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4e0
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1376

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\FindDismount.bin
1⤵
- Modifies registry class
PID:1992

C:\Program Files\Windows Sidebar\sidebar.exe
"C:\Program Files\Windows Sidebar\sidebar.exe" /showGadgets
1⤵
PID:2328

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\FindDismount.bin
1⤵
- Modifies registry class
PID:2060

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\RevokeDisconnect.mpa"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1576

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\RevokeDisconnect.mpa"
1⤵
PID:2144

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:2672

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"
1⤵
- Suspicious use of SetWindowsHookEx
PID:2348

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"
1⤵
PID:1040

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

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\s2AffC6WfZ0L.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
f5b79256cbd287253221bcbc4cc54f15

SHA1
331cbc4cea48bd7dfd525dfd8f8e62c04c1a0c49

SHA256
82ea3f954e8788486af6d33460c4d5fa2ec37fd3140977b12b6fd58c5ea57b17

SHA512
362717cfb58fd0ffa8a0ce9bb9580e2a391f5753adf0b48dd0b661c3ec7c85adfb3fa6f9c4a3e17a23f3d0de6e866859265b2a273351b186fbecfd8fd57339f9

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

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/1576-65-0x000007FEF4310000-0x000007FEF438C000-memory.dmp

Filesize
496KB

Download
memory/1576-45-0x000007FEFAB40000-0x000007FEFAB57000-memory.dmp

Filesize
92KB

Download
memory/1576-53-0x000007FEF55A0000-0x000007FEF55E1000-memory.dmp

Filesize
260KB

Download
memory/1576-73-0x000007FEF3270000-0x000007FEF33F0000-memory.dmp

Filesize
1.5MB

Download
memory/1576-75-0x000007FEF3240000-0x000007FEF326F000-memory.dmp

Filesize
188KB

Download
memory/1576-74-0x000007FEF6820000-0x000007FEF6830000-memory.dmp

Filesize
64KB

Download
memory/1576-54-0x000007FEF5570000-0x000007FEF5591000-memory.dmp

Filesize
132KB

Download
memory/1576-68-0x000007FEF4260000-0x000007FEF4288000-memory.dmp

Filesize
160KB

Download
memory/1576-69-0x000007FEF4230000-0x000007FEF4254000-memory.dmp

Filesize
144KB

Download
memory/1576-71-0x000007FEF41E0000-0x000007FEF4203000-memory.dmp

Filesize
140KB

Download
memory/1576-72-0x000007FEF41C0000-0x000007FEF41D1000-memory.dmp

Filesize
68KB

Download
memory/1576-67-0x000007FEF4290000-0x000007FEF42E7000-memory.dmp

Filesize
348KB

Download
memory/1576-70-0x000007FEF4210000-0x000007FEF4228000-memory.dmp

Filesize
96KB

Download
memory/1576-66-0x000007FEF42F0000-0x000007FEF4301000-memory.dmp

Filesize
68KB

Download
memory/1576-43-0x000007FEF5CD0000-0x000007FEF5F86000-memory.dmp

Filesize
2.7MB

Download
memory/1576-48-0x000007FEF58B0000-0x000007FEF58C1000-memory.dmp

Filesize
68KB

Download
memory/1576-46-0x000007FEF64B0000-0x000007FEF64C1000-memory.dmp

Filesize
68KB

Download
memory/1576-62-0x000007FEF43E0000-0x000007FEF43F1000-memory.dmp

Filesize
68KB

Download
memory/1576-52-0x000007FEF55F0000-0x000007FEF5657000-memory.dmp

Filesize
412KB

Download
memory/1576-41-0x000000013F7A0000-0x000000013F898000-memory.dmp

Filesize
992KB

Download
memory/1576-42-0x000007FEF68A0000-0x000007FEF68D4000-memory.dmp

Filesize
208KB

Download
memory/1576-47-0x000007FEF6490000-0x000007FEF64A7000-memory.dmp

Filesize
92KB

Download
memory/1576-50-0x000007FEF5870000-0x000007FEF5881000-memory.dmp

Filesize
68KB

Download
memory/1576-49-0x000007FEF5890000-0x000007FEF58AD000-memory.dmp

Filesize
116KB

Download
memory/1576-44-0x000007FEFAB90000-0x000007FEFABA8000-memory.dmp

Filesize
96KB

Download
memory/1576-60-0x000007FEF4420000-0x000007FEF4431000-memory.dmp

Filesize
68KB

Download
memory/1576-61-0x000007FEF4400000-0x000007FEF441B000-memory.dmp

Filesize
108KB

Download
memory/1576-51-0x000007FEF5660000-0x000007FEF586B000-memory.dmp

Filesize
2.0MB

Download
memory/1576-56-0x000007FEF44A0000-0x000007FEF44B7000-memory.dmp

Filesize
92KB

Download
memory/1576-57-0x000007FEF4480000-0x000007FEF4498000-memory.dmp

Filesize
96KB

Download
memory/1576-59-0x000007FEF4440000-0x000007FEF4451000-memory.dmp

Filesize
68KB

Download
memory/1576-55-0x000007FEF44C0000-0x000007FEF5570000-memory.dmp

Filesize
16.7MB

Download
memory/1576-58-0x000007FEF4460000-0x000007FEF4471000-memory.dmp

Filesize
68KB

Download
memory/1576-64-0x000007FEF4390000-0x000007FEF43C0000-memory.dmp

Filesize
192KB

Download
memory/1576-63-0x000007FEF43C0000-0x000007FEF43D8000-memory.dmp

Filesize
96KB

Download
memory/2144-39-0x000007FEFAB40000-0x000007FEFAB57000-memory.dmp

Filesize
92KB

Download
memory/2144-31-0x000007FEF5CD0000-0x000007FEF5F86000-memory.dmp

Filesize
2.7MB

Download
memory/2144-29-0x000000013F7A0000-0x000000013F898000-memory.dmp

Filesize
992KB

Download
memory/2144-30-0x000007FEF68A0000-0x000007FEF68D4000-memory.dmp

Filesize
208KB

Download
memory/2144-40-0x000007FEF64B0000-0x000007FEF64C1000-memory.dmp

Filesize
68KB

Download
memory/2144-38-0x000007FEFAB90000-0x000007FEFABA8000-memory.dmp

Filesize
96KB

Download
memory/2180-0-0x00000000742AE000-0x00000000742AF000-memory.dmp

Filesize
4KB

Download
memory/2180-2-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2180-13-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2180-1-0x00000000003D0000-0x000000000043C000-memory.dmp

Filesize
432KB

Download
memory/2676-10-0x0000000000AF0000-0x0000000000B5C000-memory.dmp

Filesize
432KB

Download
memory/2676-16-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2676-148-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2676-15-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2676-12-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2676-11-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download