quasar | dd48521142eddeff589404be6780f58bcdc07c0e4e4348f19ec84d73adaffb25

Resubmissions

07-11-2024 02:17

241107-cq8h5avrbq 10

06-11-2024 22:40

241106-2llk8s1raj 10

Analysis

max time kernel
117s
max time network
156s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-11-2024 02:17

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General

Target

procesosCUI7254178000020150023000.exe
Size

908KB
MD5

e93703d8357807ba8be42ce5bd71d99b
SHA1

f557b727748f4aa01265b2bc8e46b6201b5f3b7c
SHA256

fa083a970c90e1e17f4aa83ccd7f0bf52b5e0f35eaf4eeda73abdc115d9b55b9
SHA512

b8ad5c57586b70a769d1f9562148de63a3c5835d6a35d3302f33d4d20619254ae5ae6a1703fb26aaa574d96ba15b053359fe0b17059577256a86ebeb53a9b5af
SSDEEP

24576:Fg/fK9XbMAWE9XEhG7q9efZyHS7en+gIlh:q4Mj4088HS7e+gIlh

Score

10^/10

quasar defense_evasion discovery evasion execution impact persistence ransomware spyware trojan

Malware Config

Signatures

Contains code to disable Windows Defender 5 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral1/memory/3040-15-0x0000000000400000-0x000000000045C000-memory.dmp	disable_win_def
behavioral1/memory/3040-19-0x0000000000400000-0x000000000045C000-memory.dmp	disable_win_def
behavioral1/memory/3040-17-0x0000000000400000-0x000000000045C000-memory.dmp	disable_win_def
behavioral1/memory/3040-12-0x0000000000400000-0x000000000045C000-memory.dmp	disable_win_def
behavioral1/memory/3040-11-0x0000000000400000-0x000000000045C000-memory.dmp	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs 9 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

Vespre.exeprocesosCUI7254178000020150023000.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	Vespre.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	procesosCUI7254178000020150023000.exe

Modifies security service 2 TTPs 4 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WinDefend\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WinDefend\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4"	procesosCUI7254178000020150023000.exe

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3040-15-0x0000000000400000-0x000000000045C000-memory.dmp	family_quasar
behavioral1/memory/3040-19-0x0000000000400000-0x000000000045C000-memory.dmp	family_quasar
behavioral1/memory/3040-17-0x0000000000400000-0x000000000045C000-memory.dmp	family_quasar
behavioral1/memory/3040-12-0x0000000000400000-0x000000000045C000-memory.dmp	family_quasar
behavioral1/memory/3040-11-0x0000000000400000-0x000000000045C000-memory.dmp	family_quasar

UAC bypass 3 TTPs 6 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	procesosCUI7254178000020150023000.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

Vespre.exeprocesosCUI7254178000020150023000.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "1"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "1"	procesosCUI7254178000020150023000.exe

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Executes dropped EXE 2 IoCs

Processes:

Vespre.exeVespre.exe

pid	Process
2112	Vespre.exe
1076	Vespre.exe

Loads dropped DLL 1 IoCs

Processes:

procesosCUI7254178000020150023000.exe

pid	Process
3040	procesosCUI7254178000020150023000.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "1"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\DisableAntiSpyware = "1"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "1"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\DisableAntiSpyware = "1"	Vespre.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	procesosCUI7254178000020150023000.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\iceTelemetryLogtte = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\procesosCUI7254178000020150023000.exe\""	procesosCUI7254178000020150023000.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\iceTelemetryLogtte = "\"C:\\Users\\Admin\\AppData\\Roaming\\GPret\\Vespre.exe\""	Vespre.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\iceTelemetryLogtte = "\"C:\\Users\\Admin\\AppData\\Roaming\\GPret\\Vespre.exe\""	Vespre.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\iceTelemetryLogtte = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\procesosCUI7254178000020150023000.exe\""	procesosCUI7254178000020150023000.exe

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Vespre.exeprocesosCUI7254178000020150023000.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Vespre.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	procesosCUI7254178000020150023000.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

Processes:

flow	ioc
2	pastebin.com
3	pastebin.com
6	pastebin.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
4	ip-api.com

Modifies Security services 2 TTPs 16 IoCs

Modifies the startup behavior of a security service.

defense_evasion

Modify Registry

T1112

Impair Defenses

T1562

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdFilter\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdFilter\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdBoot\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdBoot\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdNisSvc\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdBoot\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdNisDrv\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdFilter\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdNisDrv\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdBoot\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdFilter\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdNisDrv\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WdNisSvc\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdNisSvc\Start = "4"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdNisDrv\Start = "4"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\services\WdNisSvc\Start = "4"	procesosCUI7254178000020150023000.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	pid	Process	procid_target
PID 2488 set thread context of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2112 set thread context of 1076	2112	Vespre.exe	44

System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

vssadmin.exepowershell.exevssadmin.exepowershell.exeVespre.exeschtasks.exeschtasks.exeprocesosCUI7254178000020150023000.exeprocesosCUI7254178000020150023000.exeschtasks.exeschtasks.exeVespre.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vespre.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	procesosCUI7254178000020150023000.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	procesosCUI7254178000020150023000.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vespre.exe

Interacts with shadow copies 3 TTPs 2 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

Processes:

vssadmin.exevssadmin.exe

pid	Process
2164	vssadmin.exe
2436	vssadmin.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exe

pid	Process
2060	schtasks.exe
1964	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

taskmgr.exepowershell.exepowershell.exe

pid	Process
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2680	powershell.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2304	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

taskmgr.exe

pid	Process
2888	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

taskmgr.exeprocesosCUI7254178000020150023000.exevssvc.exepowershell.exeVespre.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	2888	taskmgr.exe
Token: SeDebugPrivilege	3040	procesosCUI7254178000020150023000.exe
Token: SeBackupPrivilege	572	vssvc.exe
Token: SeRestorePrivilege	572	vssvc.exe
Token: SeAuditPrivilege	572	vssvc.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	1076	Vespre.exe
Token: SeDebugPrivilege	2304	powershell.exe

Suspicious use of FindShellTrayWindow 40 IoCs

Processes:

taskmgr.exe

pid	Process
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe

Suspicious use of SendNotifyMessage 40 IoCs

Processes:

taskmgr.exe

pid	Process
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe
2888	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Vespre.exe

pid	Process
1076	Vespre.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

procesosCUI7254178000020150023000.exeprocesosCUI7254178000020150023000.exeVespre.exeVespre.exe

description	pid	Process	procid_target
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 2488 wrote to memory of 3040	2488	procesosCUI7254178000020150023000.exe	32
PID 3040 wrote to memory of 1964	3040	procesosCUI7254178000020150023000.exe	34
PID 3040 wrote to memory of 1964	3040	procesosCUI7254178000020150023000.exe	34
PID 3040 wrote to memory of 1964	3040	procesosCUI7254178000020150023000.exe	34
PID 3040 wrote to memory of 1964	3040	procesosCUI7254178000020150023000.exe	34
PID 3040 wrote to memory of 1656	3040	procesosCUI7254178000020150023000.exe	36
PID 3040 wrote to memory of 1656	3040	procesosCUI7254178000020150023000.exe	36
PID 3040 wrote to memory of 1656	3040	procesosCUI7254178000020150023000.exe	36
PID 3040 wrote to memory of 1656	3040	procesosCUI7254178000020150023000.exe	36
PID 3040 wrote to memory of 2164	3040	procesosCUI7254178000020150023000.exe	38
PID 3040 wrote to memory of 2164	3040	procesosCUI7254178000020150023000.exe	38
PID 3040 wrote to memory of 2164	3040	procesosCUI7254178000020150023000.exe	38
PID 3040 wrote to memory of 2164	3040	procesosCUI7254178000020150023000.exe	38
PID 3040 wrote to memory of 2680	3040	procesosCUI7254178000020150023000.exe	41
PID 3040 wrote to memory of 2680	3040	procesosCUI7254178000020150023000.exe	41
PID 3040 wrote to memory of 2680	3040	procesosCUI7254178000020150023000.exe	41
PID 3040 wrote to memory of 2680	3040	procesosCUI7254178000020150023000.exe	41
PID 3040 wrote to memory of 2112	3040	procesosCUI7254178000020150023000.exe	43
PID 3040 wrote to memory of 2112	3040	procesosCUI7254178000020150023000.exe	43
PID 3040 wrote to memory of 2112	3040	procesosCUI7254178000020150023000.exe	43
PID 3040 wrote to memory of 2112	3040	procesosCUI7254178000020150023000.exe	43
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 2112 wrote to memory of 1076	2112	Vespre.exe	44
PID 1076 wrote to memory of 2060	1076	Vespre.exe	45
PID 1076 wrote to memory of 2060	1076	Vespre.exe	45
PID 1076 wrote to memory of 2060	1076	Vespre.exe	45
PID 1076 wrote to memory of 2060	1076	Vespre.exe	45
PID 1076 wrote to memory of 2264	1076	Vespre.exe	47
PID 1076 wrote to memory of 2264	1076	Vespre.exe	47
PID 1076 wrote to memory of 2264	1076	Vespre.exe	47
PID 1076 wrote to memory of 2264	1076	Vespre.exe	47
PID 1076 wrote to memory of 2436	1076	Vespre.exe	49
PID 1076 wrote to memory of 2436	1076	Vespre.exe	49
PID 1076 wrote to memory of 2436	1076	Vespre.exe	49
PID 1076 wrote to memory of 2436	1076	Vespre.exe	49
PID 1076 wrote to memory of 2304	1076	Vespre.exe	51
PID 1076 wrote to memory of 2304	1076	Vespre.exe	51
PID 1076 wrote to memory of 2304	1076	Vespre.exe	51
PID 1076 wrote to memory of 2304	1076	Vespre.exe	51

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

Processes:

procesosCUI7254178000020150023000.exeVespre.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	procesosCUI7254178000020150023000.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	Vespre.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	Vespre.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe
"C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe
  "C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe"
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Modifies security service
  - UAC bypass
  - Windows security bypass
  - Loads dropped DLL
  - Windows security modification
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Modifies Security services
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3040
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "\Microsoft\Windows\System\Dev34\Files\iceTelemetryLogtte" /SC MINUTE /MO 3 /RL HIGHEST /tr "C:\Users\Admin\AppData\Local\Temp\procesosCUI7254178000020150023000.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1964
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /delete /tn "iceTelemetryLogtte" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1656
- - C:\Windows\SysWOW64\vssadmin.exe
    "vssadmin" delete shadows /all /quiet
    3⤵
    - System Location Discovery: System Language Discovery
    - Interacts with shadow copies
    PID:2164
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2680
- - C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe
    "C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2112
  - - C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe
      "C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe"
      4⤵
      Modifies Windows Defender Real-time Protection settings
      Modifies security service
      UAC bypass
      Windows security bypass
      Executes dropped EXE
      Windows security modification
      Adds Run key to start application
      Checks whether UAC is enabled
      Modifies Security services
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:1076
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "\Microsoft\Windows\System\Dev34\Files\iceTelemetryLogtte" /SC MINUTE /MO 3 /RL HIGHEST /tr "C:\Users\Admin\AppData\Roaming\GPret\Vespre.exe" /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2060
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /delete /tn "iceTelemetryLogtte" /f
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2264
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        "vssadmin" delete shadows /all /quiet
        5⤵
        System Location Discovery: System Language Discovery
        Interacts with shadow copies
        
        PID:2436
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" Get-MpPreference -verbose
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2304

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2888

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:572

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Direct Volume Access

T1006

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\GPret\settings.xml

Filesize
84B

MD5
0670ea91a3ff99e765de101bacc1ce56

SHA1
3b83e99ae94105ffe78aab1b4e2dab1187b4b0f7

SHA256
7dc01c0f1c1d2aa56555d951562ebc455718d3ca7c8e25bd59d42ad5b46b2f2b

SHA512
4063b047638fd8cf8927bd360e2426416a6f154a986ad9f6b2c2d6278f7aab41f96c0c9e32c042d3d32fc6779d204012890f76e389681f6f63985b4f93a6d84d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\I2NE5WH7G5ND4JRTCXDT.temp

Filesize
7KB

MD5
c2117a08626426f38747106aa4ac9f27

SHA1
cc351a1d1d27b9f9aeec4a79d4e0dac5ed43bc97

SHA256
abb10f88193c404b76ce46c273c7b55962358662776049bae3a65232bf026c37

SHA512
5d1b283d0a2b397754e4e50b118f3d63e1d622851a053da0b4eaa8a00ebea79132973979a7e7fc9d62958d06117f8340876059b2ed03c41ed4fa1eae0a6d6042

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
be863b51cdc1a6188dcb6c8c4a40324b

SHA1
3e8c5526e51e5c319746bf535fcb3095d9044129

SHA256
986ca04e959761690bd9f465b426d77ad4c8d4e1f2190b9ed26890fd6e8024af

SHA512
b6666e0de4c34b2642920bf54cc0ca4b9bf64fd60ddab79af7a459d03ed956878908c61499102560028ee667ce9df60e63cea14f4ae015d2ff0718af11b271ed

Download Submit
\Users\Admin\AppData\Roaming\GPret\Vespre.exe

Filesize
908KB

MD5
e93703d8357807ba8be42ce5bd71d99b

SHA1
f557b727748f4aa01265b2bc8e46b6201b5f3b7c

SHA256
fa083a970c90e1e17f4aa83ccd7f0bf52b5e0f35eaf4eeda73abdc115d9b55b9

SHA512
b8ad5c57586b70a769d1f9562148de63a3c5835d6a35d3302f33d4d20619254ae5ae6a1703fb26aaa574d96ba15b053359fe0b17059577256a86ebeb53a9b5af

Download Submit
memory/1076-47-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2112-37-0x00000000011A0000-0x0000000001288000-memory.dmp

Filesize
928KB

Download
memory/2488-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-3-0x0000000001EE0000-0x0000000001EFC000-memory.dmp

Filesize
112KB

Download
memory/2488-4-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2488-5-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-20-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-8-0x0000000001E00000-0x0000000001E9C000-memory.dmp

Filesize
624KB

Download
memory/2488-1-0x0000000000020000-0x0000000000108000-memory.dmp

Filesize
928KB

Download
memory/2488-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2888-29-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2888-38-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2888-7-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2888-6-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/3040-11-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/3040-10-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/3040-12-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/3040-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3040-17-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/3040-19-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/3040-15-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/3040-9-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download