quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy (4).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

2612 schtasks.exe
2 ip-api.com
6 api.ipify.org

pid	process
2612	schtasks.exe
2	ip-api.com
6	api.ipify.org

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral5/memory/1928-1-0x00000000001F0000-0x000000000025C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral5/memory/2504-10-0x00000000000C0000-0x000000000012C000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exefmkyY2Kk6DMh.exe

pid process

2504 Client.exe
2540 fmkyY2Kk6DMh.exe
Loads dropped DLL 2 IoCs

Processes:

Uni - Copy (4).exeClient.exe

pid process

1928 Uni - Copy (4).exe
2504 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

528 SCHTASKS.exe
2612 schtasks.exe
2500 schtasks.exe
2644 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

3032 vlc.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

3032 vlc.exe

pid	process
2504	Client.exe
2540	fmkyY2Kk6DMh.exe

pid	process
1928	Uni - Copy (4).exe
2504	Client.exe

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

pid	process
528	SCHTASKS.exe
2612	schtasks.exe
2500	schtasks.exe
2644	SCHTASKS.exe

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

pid	process
3032	vlc.exe

pid	process
3032	vlc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Uni - Copy (4).exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	1928	Uni - Copy (4).exe
Token: SeDebugPrivilege	2504	Client.exe
Token: 33	1980	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1980	AUDIODG.EXE
Token: 33	1980	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1980	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 5 IoCs

Processes:

vlc.exe

pid process

3032 vlc.exe
3032 vlc.exe
3032 vlc.exe
3032 vlc.exe
3032 vlc.exe
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

vlc.exe

pid process

3032 vlc.exe
3032 vlc.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

Client.exefmkyY2Kk6DMh.exevlc.exe

pid process

2504 Client.exe
2540 fmkyY2Kk6DMh.exe
3032 vlc.exe

pid	process
3032	vlc.exe
3032	vlc.exe
3032	vlc.exe
3032	vlc.exe
3032	vlc.exe

pid	process
3032	vlc.exe
3032	vlc.exe

pid	process
2504	Client.exe
2540	fmkyY2Kk6DMh.exe
3032	vlc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

Uni - Copy (4).exeClient.exewmplayer.exewmplayer.exe

description	pid	process	target process
PID 1928 wrote to memory of 2612	1928	Uni - Copy (4).exe	schtasks.exe
PID 1928 wrote to memory of 2612	1928	Uni - Copy (4).exe	schtasks.exe
PID 1928 wrote to memory of 2612	1928	Uni - Copy (4).exe	schtasks.exe
PID 1928 wrote to memory of 2612	1928	Uni - Copy (4).exe	schtasks.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 1928 wrote to memory of 2504	1928	Uni - Copy (4).exe	Client.exe
PID 2504 wrote to memory of 2500	2504	Client.exe	schtasks.exe
PID 2504 wrote to memory of 2500	2504	Client.exe	schtasks.exe
PID 2504 wrote to memory of 2500	2504	Client.exe	schtasks.exe
PID 2504 wrote to memory of 2500	2504	Client.exe	schtasks.exe
PID 1928 wrote to memory of 2644	1928	Uni - Copy (4).exe	SCHTASKS.exe
PID 1928 wrote to memory of 2644	1928	Uni - Copy (4).exe	SCHTASKS.exe
PID 1928 wrote to memory of 2644	1928	Uni - Copy (4).exe	SCHTASKS.exe
PID 1928 wrote to memory of 2644	1928	Uni - Copy (4).exe	SCHTASKS.exe
PID 2504 wrote to memory of 2540	2504	Client.exe	fmkyY2Kk6DMh.exe
PID 2504 wrote to memory of 2540	2504	Client.exe	fmkyY2Kk6DMh.exe
PID 2504 wrote to memory of 2540	2504	Client.exe	fmkyY2Kk6DMh.exe
PID 2504 wrote to memory of 2540	2504	Client.exe	fmkyY2Kk6DMh.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1628 wrote to memory of 1732	1628	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe
PID 1420 wrote to memory of 2044	1420	wmplayer.exe	setup_wm.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (4).exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (4).exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (4).exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:2612

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:2504

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:2500

C:\Users\Admin\AppData\Local\Temp\fmkyY2Kk6DMh.exe
"C:\Users\Admin\AppData\Local\Temp\fmkyY2Kk6DMh.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2540

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:528

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (4).exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (4).exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:2644

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x574
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1980

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:3032

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:1
1⤵
- Suspicious use of WriteProcessMemory
PID:1628

C:\Program Files (x86)\Windows Media Player\setup_wm.exe
"C:\Program Files (x86)\Windows Media Player\setup_wm.exe" /RunOnce:"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:1
2⤵
PID:1732

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:1
1⤵
- Suspicious use of WriteProcessMemory
PID:1420

C:\Program Files (x86)\Windows Media Player\setup_wm.exe
"C:\Program Files (x86)\Windows Media Player\setup_wm.exe" /RunOnce:"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:1
2⤵
PID:2044

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\ImportInitialize.bin
1⤵
- Modifies registry class
PID:1012

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}
1⤵
PID:964

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\ConvertMount.TTS"
1⤵
PID:2184

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\Desktop\EnterSubmit.bat" "
1⤵
PID:2600

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

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\fmkyY2Kk6DMh.exe
Filesize
277KB

MD5
dac0c5b2380cbdd93b46763427c9f8df

SHA1
038089e1a0ac8375be797fc3ce7ae719abc72834

SHA256
d02538788fb57f568ece292f5fc20e9775c86d504de67f57e22534f84adc73c6

SHA512
05cc1f6bf25a6545a06c735ae7a4a7fc25489bdb9fbc8d5797be623982662c4a93cba2d20bfe14313ef1548eaaa691e55fabdd8e3d3e45de9ab42dc62f9a7023

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp26114.WMC\allservices.xml
Filesize
546B

MD5
df03e65b8e082f24dab09c57bc9c6241

SHA1
6b0dacbf38744c9a381830e6a5dc4c71bd7cedbf

SHA256
155b9c588061c71832af329fafa5678835d9153b8fbb7592195ae953d0c455ba

SHA512
ef1cc8d27fbc5da5daab854c933d3914b84ee539d4d2f0126dc1a04a830c5599e39a923c80257653638b1b99b0073a7174cc164be5887181730883c752ba2f99

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp27393.WMC\serviceinfo.xml
Filesize
523B

MD5
d58da90d6dc51f97cb84dfbffe2b2300

SHA1
5f86b06b992a3146cb698a99932ead57a5ec4666

SHA256
93acdb79543d9248ca3fca661f3ac287e6004e4b3dafd79d4c4070794ffbf2ad

SHA512
7f1e95e5aa4c8a0e4c967135c78f22f4505f2a48bbc619924d0096bf4a94d469389b9e8488c12edacfba819517b8376546687d1145660ad1f49d8c20a744e636

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

MD5
b70fdac25a99501e3cae11f1b775249e

SHA1
3c59226479bfdcd1b2927bcfb1a7516d4cb8dd71

SHA256
51ff3eb450a786c1aaa75ff889f2fd256412a7b75d04277fdf9fcccc20e57246

SHA512
43f0d5d6e5f0d5febba537c109ffdbc250bbb6e9725e635a43ec975b0353048eaeee50b6e9274cd5e072ea6b0cea32439bd37408b2528832f467f2075f74ca44

Download Submit
memory/1928-1-0x00000000001F0000-0x000000000025C000-memory.dmp

Filesize
432KB

Download
memory/1928-2-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/1928-0-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

Filesize
4KB

Download
memory/1928-13-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2504-12-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2504-16-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2504-15-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2504-167-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2504-11-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/2504-10-0x00000000000C0000-0x000000000012C000-memory.dmp

Filesize
432KB

Download
memory/3032-31-0x000007FEF64E0000-0x000007FEF64F1000-memory.dmp

Filesize
68KB

Download
memory/3032-35-0x000007FEF4830000-0x000007FEF58DB000-memory.dmp

Filesize
16.7MB

Download
memory/3032-33-0x000007FEF58E0000-0x000007FEF58FD000-memory.dmp

Filesize
116KB

Download
memory/3032-29-0x000007FEF7080000-0x000007FEF7098000-memory.dmp

Filesize
96KB

Download
memory/3032-34-0x000007FEF59B0000-0x000007FEF59C1000-memory.dmp

Filesize
68KB

Download
memory/3032-28-0x000007FEF60B0000-0x000007FEF6364000-memory.dmp

Filesize
2.7MB

Download
memory/3032-36-0x000007FEF4730000-0x000007FEF4797000-memory.dmp

Filesize
412KB

Download
memory/3032-32-0x000007FEF5950000-0x000007FEF5967000-memory.dmp

Filesize
92KB

Download
memory/3032-30-0x000007FEF6FD0000-0x000007FEF6FE7000-memory.dmp

Filesize
92KB

Download
memory/3032-26-0x000000013FAC0000-0x000000013FBB8000-memory.dmp

Filesize
992KB

Download
memory/3032-56-0x000007FEF4830000-0x000007FEF58DB000-memory.dmp

Filesize
16.7MB

Download
memory/3032-67-0x000007FEF4830000-0x000007FEF58DB000-memory.dmp

Filesize
16.7MB

Download
memory/3032-78-0x000007FEF4830000-0x000007FEF58DB000-memory.dmp

Filesize
16.7MB

Download
memory/3032-89-0x000007FEF4830000-0x000007FEF58DB000-memory.dmp

Filesize
16.7MB

Download
memory/3032-27-0x000007FEF6370000-0x000007FEF63A4000-memory.dmp

Filesize
208KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads