quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy (6).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

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

pid process

2060 schtasks.exe
2 ip-api.com
6 api.ipify.org

pid	process
2060	schtasks.exe
2	ip-api.com
6	api.ipify.org

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral9/memory/2208-1-0x00000000000C0000-0x000000000012C000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral9/memory/2700-10-0x0000000000B60000-0x0000000000BCC000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exe9SlT5UjnTYDn.exe

pid process

2700 Client.exe
1152 9SlT5UjnTYDn.exe
Loads dropped DLL 2 IoCs

Processes:

Uni - Copy (6).exeClient.exe

pid process

2208 Uni - Copy (6).exe
2700 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

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

2060 schtasks.exe
2464 SCHTASKS.exe
1700 schtasks.exe
2172 SCHTASKS.exe

pid	process
2700	Client.exe
1152	9SlT5UjnTYDn.exe

pid	process
2208	Uni - Copy (6).exe
2700	Client.exe

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

pid	process
2060	schtasks.exe
2464	SCHTASKS.exe
1700	schtasks.exe
2172	SCHTASKS.exe

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

POWERPNT.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	POWERPNT.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	POWERPNT.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	POWERPNT.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	POWERPNT.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	POWERPNT.EXE
Key created	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\Toolbar	POWERPNT.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	POWERPNT.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

vlc.exePOWERPNT.EXE

pid process

2504 vlc.exe
1816 POWERPNT.EXE
Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

vlc.exePOWERPNT.EXE

pid process

2504 vlc.exe
1816 POWERPNT.EXE

pid	process
2504	vlc.exe
1816	POWERPNT.EXE

pid	process
2504	vlc.exe
1816	POWERPNT.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Uni - Copy (6).exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	2208	Uni - Copy (6).exe
Token: SeDebugPrivilege	2700	Client.exe
Token: 33	948	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	948	AUDIODG.EXE
Token: 33	948	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	948	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 10 IoCs

Processes:

vlc.exe

pid process

2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
Suspicious use of SendNotifyMessage 7 IoCs

Processes:

vlc.exe

pid process

2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
2504 vlc.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

Client.exe9SlT5UjnTYDn.exevlc.exePOWERPNT.EXE

pid process

2700 Client.exe
1152 9SlT5UjnTYDn.exe
2504 vlc.exe
1816 POWERPNT.EXE

pid	process
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe

pid	process
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe
2504	vlc.exe

pid	process
2700	Client.exe
1152	9SlT5UjnTYDn.exe
2504	vlc.exe
1816	POWERPNT.EXE

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

Uni - Copy (6).exeClient.exePOWERPNT.EXE

description	pid	process	target process
PID 2208 wrote to memory of 2060	2208	Uni - Copy (6).exe	schtasks.exe
PID 2208 wrote to memory of 2060	2208	Uni - Copy (6).exe	schtasks.exe
PID 2208 wrote to memory of 2060	2208	Uni - Copy (6).exe	schtasks.exe
PID 2208 wrote to memory of 2060	2208	Uni - Copy (6).exe	schtasks.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2700	2208	Uni - Copy (6).exe	Client.exe
PID 2208 wrote to memory of 2464	2208	Uni - Copy (6).exe	SCHTASKS.exe
PID 2208 wrote to memory of 2464	2208	Uni - Copy (6).exe	SCHTASKS.exe
PID 2208 wrote to memory of 2464	2208	Uni - Copy (6).exe	SCHTASKS.exe
PID 2208 wrote to memory of 2464	2208	Uni - Copy (6).exe	SCHTASKS.exe
PID 2700 wrote to memory of 1700	2700	Client.exe	schtasks.exe
PID 2700 wrote to memory of 1700	2700	Client.exe	schtasks.exe
PID 2700 wrote to memory of 1700	2700	Client.exe	schtasks.exe
PID 2700 wrote to memory of 1700	2700	Client.exe	schtasks.exe
PID 2700 wrote to memory of 1152	2700	Client.exe	9SlT5UjnTYDn.exe
PID 2700 wrote to memory of 1152	2700	Client.exe	9SlT5UjnTYDn.exe
PID 2700 wrote to memory of 1152	2700	Client.exe	9SlT5UjnTYDn.exe
PID 2700 wrote to memory of 1152	2700	Client.exe	9SlT5UjnTYDn.exe
PID 1816 wrote to memory of 2384	1816	POWERPNT.EXE	splwow64.exe
PID 1816 wrote to memory of 2384	1816	POWERPNT.EXE	splwow64.exe
PID 1816 wrote to memory of 2384	1816	POWERPNT.EXE	splwow64.exe
PID 1816 wrote to memory of 2384	1816	POWERPNT.EXE	splwow64.exe
PID 2700 wrote to memory of 2172	2700	Client.exe	SCHTASKS.exe
PID 2700 wrote to memory of 2172	2700	Client.exe	SCHTASKS.exe
PID 2700 wrote to memory of 2172	2700	Client.exe	SCHTASKS.exe
PID 2700 wrote to memory of 2172	2700	Client.exe	SCHTASKS.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:2060

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:2700

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:1700

C:\Users\Admin\AppData\Local\Temp\9SlT5UjnTYDn.exe
"C:\Users\Admin\AppData\Local\Temp\9SlT5UjnTYDn.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1152

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:2172

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (6).exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (6).exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2464

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0xc4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:948

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:2976

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\MergeRevoke.mp3"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:2504

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\MergeRevoke.mp3"
1⤵
PID:2432

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\GroupOut.sys
1⤵
PID:1528

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\GroupOut.sys
1⤵
PID:2220

C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" "C:\Users\Admin\Desktop\StopApprove.pptm"
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1816

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:2384

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

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\9SlT5UjnTYDn.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/2208-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2208-1-0x00000000000C0000-0x000000000012C000-memory.dmp

Filesize
432KB

Download
memory/2208-2-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2208-13-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2432-29-0x000007FEF7B60000-0x000007FEF7B78000-memory.dmp

Filesize
96KB

Download
memory/2432-27-0x000007FEF7520000-0x000007FEF7554000-memory.dmp

Filesize
208KB

Download
memory/2432-26-0x000000013FAE0000-0x000000013FBD8000-memory.dmp

Filesize
992KB

Download
memory/2432-28-0x000007FEF59C0000-0x000007FEF5C74000-memory.dmp

Filesize
2.7MB

Download
memory/2432-30-0x000007FEF7130000-0x000007FEF7147000-memory.dmp

Filesize
92KB

Download
memory/2432-31-0x000007FEF59A0000-0x000007FEF59B1000-memory.dmp

Filesize
68KB

Download
memory/2504-66-0x000007FEF40A0000-0x000007FEF40CF000-memory.dmp

Filesize
188KB

Download
memory/2504-59-0x000007FEF4220000-0x000007FEF4287000-memory.dmp

Filesize
412KB

Download
memory/2504-43-0x000007FEF5980000-0x000007FEF5997000-memory.dmp

Filesize
92KB

Download
memory/2504-46-0x000007FEF56F0000-0x000007FEF5701000-memory.dmp

Filesize
68KB

Download
memory/2504-47-0x000007FEF53D0000-0x000007FEF55D0000-memory.dmp

Filesize
2.0MB

Download
memory/2504-45-0x000007FEF5710000-0x000007FEF572D000-memory.dmp

Filesize
116KB

Download
memory/2504-44-0x000007FEF5730000-0x000007FEF5741000-memory.dmp

Filesize
68KB

Download
memory/2504-39-0x000007FEF59C0000-0x000007FEF5C74000-memory.dmp

Filesize
2.7MB

Download
memory/2504-42-0x000007FEF59A0000-0x000007FEF59B1000-memory.dmp

Filesize
68KB

Download
memory/2504-68-0x000007FEF4060000-0x000007FEF4071000-memory.dmp

Filesize
68KB

Download
memory/2504-67-0x000007FEF4080000-0x000007FEF4093000-memory.dmp

Filesize
76KB

Download
memory/2504-48-0x000007FEF4320000-0x000007FEF53CB000-memory.dmp

Filesize
16.7MB

Download
memory/2504-37-0x000000013FAE0000-0x000000013FBD8000-memory.dmp

Filesize
992KB

Download
memory/2504-65-0x000007FEF40D0000-0x000007FEF4127000-memory.dmp

Filesize
348KB

Download
memory/2504-64-0x000007FEF4130000-0x000007FEF4141000-memory.dmp

Filesize
68KB

Download
memory/2504-63-0x000007FEF4150000-0x000007FEF4167000-memory.dmp

Filesize
92KB

Download
memory/2504-62-0x000007FEF4170000-0x000007FEF4181000-memory.dmp

Filesize
68KB

Download
memory/2504-61-0x000007FEF4190000-0x000007FEF41FF000-memory.dmp

Filesize
444KB

Download
memory/2504-60-0x000007FEF4200000-0x000007FEF4217000-memory.dmp

Filesize
92KB

Download
memory/2504-38-0x000007FEF7520000-0x000007FEF7554000-memory.dmp

Filesize
208KB

Download
memory/2504-58-0x000007FEF4290000-0x000007FEF42C0000-memory.dmp

Filesize
192KB

Download
memory/2504-57-0x000007FEF42C0000-0x000007FEF42D8000-memory.dmp

Filesize
96KB

Download
memory/2504-56-0x000007FEF42E0000-0x000007FEF42F1000-memory.dmp

Filesize
68KB

Download
memory/2504-55-0x000007FEF4300000-0x000007FEF431B000-memory.dmp

Filesize
108KB

Download
memory/2504-54-0x000007FEF5600000-0x000007FEF5611000-memory.dmp

Filesize
68KB

Download
memory/2504-53-0x000007FEF5620000-0x000007FEF5631000-memory.dmp

Filesize
68KB

Download
memory/2504-52-0x000007FEF5640000-0x000007FEF5651000-memory.dmp

Filesize
68KB

Download
memory/2504-51-0x000007FEF5660000-0x000007FEF5678000-memory.dmp

Filesize
96KB

Download
memory/2504-50-0x000007FEF5680000-0x000007FEF56A1000-memory.dmp

Filesize
132KB

Download
memory/2504-49-0x000007FEF56B0000-0x000007FEF56EF000-memory.dmp

Filesize
252KB

Download
memory/2504-41-0x000007FEF7130000-0x000007FEF7147000-memory.dmp

Filesize
92KB

Download
memory/2504-40-0x000007FEF7B60000-0x000007FEF7B78000-memory.dmp

Filesize
96KB

Download
memory/2700-12-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2700-10-0x0000000000B60000-0x0000000000BCC000-memory.dmp

Filesize
432KB

Download
memory/2700-11-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2700-15-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2700-16-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2700-233-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads