quasar | c4f4b783e9b152a00d5cac8b82d2ae0c74fa848aaa4a524dc5cb81b1576aaab5

General

Target

uni/Uni - Copy (5).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

flow ioc

26 api.ipify.org
4168 schtasks.exe
10 ip-api.com

flow	ioc
26	api.ipify.org
4168	schtasks.exe
10	ip-api.com

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral8/memory/4512-1-0x00000000008A0000-0x000000000090C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Client.exeMKbufAdVpHF0.exe

pid process

4684 Client.exe
540 MKbufAdVpHF0.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

10 ip-api.com
26 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

flow	ioc
10	ip-api.com
26	api.ipify.org

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

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

SCHTASKS.exeschtasks.exeschtasks.exe

pid process

3516 SCHTASKS.exe
2408 schtasks.exe
4168 schtasks.exe

pid	process
3516	SCHTASKS.exe
2408	schtasks.exe
4168	schtasks.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3688 WINWORD.EXE
3688 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

mspaint.exe

pid process

3760 mspaint.exe
3760 mspaint.exe

pid	process
3688	WINWORD.EXE
3688	WINWORD.EXE

pid	process
3760	mspaint.exe
3760	mspaint.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Uni - Copy (5).exeClient.exeAUDIODG.EXE

description	pid	process
Token: SeDebugPrivilege	4512	Uni - Copy (5).exe
Token: SeDebugPrivilege	4684	Client.exe
Token: 33	3856	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	3856	AUDIODG.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

Client.exeMKbufAdVpHF0.exemspaint.exeWINWORD.EXE

pid	process
4684	Client.exe
540	MKbufAdVpHF0.exe
3760	mspaint.exe
3760	mspaint.exe
3760	mspaint.exe
3760	mspaint.exe
3688	WINWORD.EXE
3688	WINWORD.EXE
3688	WINWORD.EXE
3688	WINWORD.EXE
3688	WINWORD.EXE
3688	WINWORD.EXE
3688	WINWORD.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Uni - Copy (5).exeClient.exe

description	pid	process	target process
PID 4512 wrote to memory of 4168	4512	Uni - Copy (5).exe	schtasks.exe
PID 4512 wrote to memory of 4168	4512	Uni - Copy (5).exe	schtasks.exe
PID 4512 wrote to memory of 4168	4512	Uni - Copy (5).exe	schtasks.exe
PID 4512 wrote to memory of 4684	4512	Uni - Copy (5).exe	Client.exe
PID 4512 wrote to memory of 4684	4512	Uni - Copy (5).exe	Client.exe
PID 4512 wrote to memory of 4684	4512	Uni - Copy (5).exe	Client.exe
PID 4512 wrote to memory of 3516	4512	Uni - Copy (5).exe	SCHTASKS.exe
PID 4512 wrote to memory of 3516	4512	Uni - Copy (5).exe	SCHTASKS.exe
PID 4512 wrote to memory of 3516	4512	Uni - Copy (5).exe	SCHTASKS.exe
PID 4684 wrote to memory of 2408	4684	Client.exe	schtasks.exe
PID 4684 wrote to memory of 2408	4684	Client.exe	schtasks.exe
PID 4684 wrote to memory of 2408	4684	Client.exe	schtasks.exe
PID 4684 wrote to memory of 540	4684	Client.exe	MKbufAdVpHF0.exe
PID 4684 wrote to memory of 540	4684	Client.exe	MKbufAdVpHF0.exe
PID 4684 wrote to memory of 540	4684	Client.exe	MKbufAdVpHF0.exe

C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (5).exe
"C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (5).exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4512

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "SeroXen" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (5).exe" /rl HIGHEST /f
2⤵
- Quasar RAT
- Creates scheduled task(s)
PID:4168

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4684

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:2408

C:\Users\Admin\AppData\Local\Temp\MKbufAdVpHF0.exe
"C:\Users\Admin\AppData\Local\Temp\MKbufAdVpHF0.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:540

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Uni - Copy (5).exe" /tr "'C:\Users\Admin\AppData\Local\Temp\uni\Uni - Copy (5).exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:3516

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x384 0x4f4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3856

C:\Windows\system32\mspaint.exe
"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\Desktop\UndoGrant.wmf"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3760

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
1⤵
PID:2724

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Desktop\ReadUnlock.docx" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3688

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Desktop\ReadUnlock.docx" /o ""
1⤵
PID:1484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MKbufAdVpHF0.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
memory/1484-43-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/1484-44-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/1484-45-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/1484-46-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/3688-34-0x00007FFC85E90000-0x00007FFC85EA0000-memory.dmp

Filesize
64KB

Download
memory/3688-33-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/3688-35-0x00007FFC85E90000-0x00007FFC85EA0000-memory.dmp

Filesize
64KB

Download
memory/3688-32-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/3688-30-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/3688-31-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/3688-29-0x00007FFC88570000-0x00007FFC88580000-memory.dmp

Filesize
64KB

Download
memory/4512-6-0x0000000006270000-0x0000000006282000-memory.dmp

Filesize
72KB

Download
memory/4512-7-0x00000000067B0000-0x00000000067EC000-memory.dmp

Filesize
240KB

Download
memory/4512-1-0x00000000008A0000-0x000000000090C000-memory.dmp

Filesize
432KB

Download
memory/4512-2-0x0000000005980000-0x0000000005F24000-memory.dmp

Filesize
5.6MB

Download
memory/4512-16-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4512-3-0x00000000053D0000-0x0000000005462000-memory.dmp

Filesize
584KB

Download
memory/4512-4-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4512-5-0x0000000005330000-0x0000000005396000-memory.dmp

Filesize
408KB

Download
memory/4512-0-0x0000000074E5E000-0x0000000074E5F000-memory.dmp

Filesize
4KB

Download
memory/4684-20-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4684-13-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4684-14-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download
memory/4684-17-0x00000000072B0000-0x00000000072BA000-memory.dmp

Filesize
40KB

Download
memory/4684-19-0x0000000074E50000-0x0000000075600000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads