quasar | fcd5b843d50ec2f973aaa27e54b6bf045931cc3cb8d9bea4edaade352fe0f7d5

Analysis

max time kernel
288s
max time network
292s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
02-06-2024 06:22

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General

Target

uni/Uni - Copy (11) - 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
2532 schtasks.exe
6 api.ipify.org

flow	ioc
2	ip-api.com
2532	schtasks.exe
6	api.ipify.org

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral3/memory/1516-1-0x0000000001050000-0x00000000010BC000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral3/memory/2516-10-0x0000000000C40000-0x0000000000CAC000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exelgoDHub8kehX.exe

pid process

2516 Client.exe
2880 lgoDHub8kehX.exe
Loads dropped DLL 2 IoCs

Processes:

Uni - Copy (11) - Copy.exeClient.exe

pid process

1516 Uni - Copy (11) - Copy.exe
2516 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
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

2532 schtasks.exe
2432 SCHTASKS.exe
2012 schtasks.exe
2280 SCHTASKS.exe

pid	process
1516	Uni - Copy (11) - Copy.exe
2516	Client.exe

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

pid	process
2532	schtasks.exe
2432	SCHTASKS.exe
2012	schtasks.exe
2280	SCHTASKS.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

IEXPLORE.EXEIEXPLORE.EXEhelppane.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\InternetRegistry	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\PageSetup	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "1"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\LowRegistry	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Toolbar	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Zoom	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{41AE2B71-20A9-11EF-A1A5-568B85A61596} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\IntelliForms	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main	helppane.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

vlc.exe

pid process

1872 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

1872 vlc.exe

pid	process
1872	vlc.exe

pid	process
1872	vlc.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

Processes:

Uni - Copy (11) - Copy.exeClient.exeAUDIODG.EXEhelppane.exe

description	pid	process
Token: SeDebugPrivilege	1516	Uni - Copy (11) - Copy.exe
Token: SeDebugPrivilege	2516	Client.exe
Token: 33	996	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	996	AUDIODG.EXE
Token: 33	996	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	996	AUDIODG.EXE
Token: SeTakeOwnershipPrivilege	1592	helppane.exe
Token: SeTakeOwnershipPrivilege	1592	helppane.exe
Token: SeTakeOwnershipPrivilege	1592	helppane.exe
Token: SeTakeOwnershipPrivilege	1592	helppane.exe

Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

vlc.exehelppane.exeIEXPLORE.EXE

pid process

1872 vlc.exe
1872 vlc.exe
1872 vlc.exe
1592 helppane.exe
1592 helppane.exe
2024 IEXPLORE.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

vlc.exe

pid process

1872 vlc.exe
1872 vlc.exe

pid	process
1872	vlc.exe
1872	vlc.exe
1872	vlc.exe
1592	helppane.exe
1592	helppane.exe
2024	IEXPLORE.EXE

pid	process
1872	vlc.exe
1872	vlc.exe

Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

Client.exelgoDHub8kehX.exevlc.exehelppane.exeIEXPLORE.EXEIEXPLORE.EXE

pid	process
2516	Client.exe
2880	lgoDHub8kehX.exe
1872	vlc.exe
1592	helppane.exe
1592	helppane.exe
2024	IEXPLORE.EXE
2024	IEXPLORE.EXE
764	IEXPLORE.EXE
764	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

Uni - Copy (11) - Copy.exeClient.exeiexplore.exeIEXPLORE.EXE

description	pid	process	target process
PID 1516 wrote to memory of 2532	1516	Uni - Copy (11) - Copy.exe	schtasks.exe
PID 1516 wrote to memory of 2532	1516	Uni - Copy (11) - Copy.exe	schtasks.exe
PID 1516 wrote to memory of 2532	1516	Uni - Copy (11) - Copy.exe	schtasks.exe
PID 1516 wrote to memory of 2532	1516	Uni - Copy (11) - Copy.exe	schtasks.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2516	1516	Uni - Copy (11) - Copy.exe	Client.exe
PID 1516 wrote to memory of 2432	1516	Uni - Copy (11) - Copy.exe	SCHTASKS.exe
PID 1516 wrote to memory of 2432	1516	Uni - Copy (11) - Copy.exe	SCHTASKS.exe
PID 1516 wrote to memory of 2432	1516	Uni - Copy (11) - Copy.exe	SCHTASKS.exe
PID 1516 wrote to memory of 2432	1516	Uni - Copy (11) - Copy.exe	SCHTASKS.exe
PID 2516 wrote to memory of 2012	2516	Client.exe	schtasks.exe
PID 2516 wrote to memory of 2012	2516	Client.exe	schtasks.exe
PID 2516 wrote to memory of 2012	2516	Client.exe	schtasks.exe
PID 2516 wrote to memory of 2012	2516	Client.exe	schtasks.exe
PID 2516 wrote to memory of 2880	2516	Client.exe	lgoDHub8kehX.exe
PID 2516 wrote to memory of 2880	2516	Client.exe	lgoDHub8kehX.exe
PID 2516 wrote to memory of 2880	2516	Client.exe	lgoDHub8kehX.exe
PID 2516 wrote to memory of 2880	2516	Client.exe	lgoDHub8kehX.exe
PID 2516 wrote to memory of 2280	2516	Client.exe	SCHTASKS.exe
PID 2516 wrote to memory of 2280	2516	Client.exe	SCHTASKS.exe
PID 2516 wrote to memory of 2280	2516	Client.exe	SCHTASKS.exe
PID 2516 wrote to memory of 2280	2516	Client.exe	SCHTASKS.exe
PID 1736 wrote to memory of 2024	1736	iexplore.exe	IEXPLORE.EXE
PID 1736 wrote to memory of 2024	1736	iexplore.exe	IEXPLORE.EXE
PID 1736 wrote to memory of 2024	1736	iexplore.exe	IEXPLORE.EXE
PID 1736 wrote to memory of 2024	1736	iexplore.exe	IEXPLORE.EXE
PID 2024 wrote to memory of 764	2024	IEXPLORE.EXE	IEXPLORE.EXE
PID 2024 wrote to memory of 764	2024	IEXPLORE.EXE	IEXPLORE.EXE
PID 2024 wrote to memory of 764	2024	IEXPLORE.EXE	IEXPLORE.EXE
PID 2024 wrote to memory of 764	2024	IEXPLORE.EXE	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (11) - Copy.exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (11) - Copy.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1516

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (11) - Copy.exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:2532

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:2516

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:2012

C:\Users\Admin\AppData\Local\Temp\lgoDHub8kehX.exe
"C:\Users\Admin\AppData\Local\Temp\lgoDHub8kehX.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2880

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:2280

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (11) - Copy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (11) - Copy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2432

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x270
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:996

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1872

C:\Windows\helppane.exe
C:\Windows\helppane.exe -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:1592

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe" -nohome
1⤵
- Suspicious use of WriteProcessMemory
PID:1736

C:\Program Files\Internet Explorer\IEXPLORE.EXE
"C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome
2⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2024

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2024 CREDAT:275457 /prefetch:2
3⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:764

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

Modify Registry

T1112

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\Local\Temp\lgoDHub8kehX.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

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

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/1516-13-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/1516-1-0x0000000001050000-0x00000000010BC000-memory.dmp

Filesize
432KB

Download
memory/1516-2-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/1516-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/1592-41-0x0000000003A20000-0x0000000003A30000-memory.dmp

Filesize
64KB

Download
memory/1872-49-0x000007FEF7210000-0x000007FEF722D000-memory.dmp

Filesize
116KB

Download
memory/1872-46-0x000007FEF7660000-0x000007FEF7677000-memory.dmp

Filesize
92KB

Download
memory/1872-95-0x000007FEF5040000-0x000007FEF60EB000-memory.dmp

Filesize
16.7MB

Download
memory/1872-84-0x000007FEF5040000-0x000007FEF60EB000-memory.dmp

Filesize
16.7MB

Download
memory/1872-73-0x000007FEF5040000-0x000007FEF60EB000-memory.dmp

Filesize
16.7MB

Download
memory/1872-43-0x000007FEF72C0000-0x000007FEF72F4000-memory.dmp

Filesize
208KB

Download
memory/1872-42-0x000000013F8E0000-0x000000013F9D8000-memory.dmp

Filesize
992KB

Download
memory/1872-62-0x000007FEF5040000-0x000007FEF60EB000-memory.dmp

Filesize
16.7MB

Download
memory/1872-50-0x000007FEF6C50000-0x000007FEF6C61000-memory.dmp

Filesize
68KB

Download
memory/1872-48-0x000007FEF7230000-0x000007FEF7247000-memory.dmp

Filesize
92KB

Download
memory/1872-47-0x000007FEF72A0000-0x000007FEF72B1000-memory.dmp

Filesize
68KB

Download
memory/1872-51-0x000007FEF5040000-0x000007FEF60EB000-memory.dmp

Filesize
16.7MB

Download
memory/1872-45-0x000007FEF8450000-0x000007FEF8468000-memory.dmp

Filesize
96KB

Download
memory/1872-44-0x000007FEF6220000-0x000007FEF64D4000-memory.dmp

Filesize
2.7MB

Download
memory/1872-52-0x000007FEF6A90000-0x000007FEF6AF7000-memory.dmp

Filesize
412KB

Download
memory/2516-15-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-10-0x0000000000C40000-0x0000000000CAC000-memory.dmp

Filesize
432KB

Download
memory/2516-12-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-11-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-16-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-108-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download