f6a83e6ed8bf92b8ff4da0aba72fe354199ec79a99008b34800e4cfdb92d3a67

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 03:48

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General

Target

wpbt0.exe
Size

50KB
MD5

df9188698b078a38b399a8b6f61f9c34
SHA1

b221335078e9e368f07b102fccab2c83c4f90a5f
SHA256

9282cdf4c83b4ca8015b0e450ac68c5bb7effe4503d3d34efa2ad496d37d2d26
SHA512

97242771d5c9f864d6f929c141085c718da9642777778228e3a2b072c2137467c6b80fc8c0d439cc5aac0e434a5e6cef13b22b537ab52812de9ed3d98eb6e37b
SSDEEP

768:it81vCu5ZnWpQgUMq9+12GDuRUP6Ez9Ctwgg/wI2oRPfFSTYJa2U:iqOpQCq9+1VDuSVIhJGe

Score

10^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

wpbt0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wpbt0.exe"	wpbt0.exe

Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs

defense_evasion

Safe Mode Boot

T1562.009

Processes:

wpbt0.exe

description	ioc	process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager	wpbt0.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys	wpbt0.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc	wpbt0.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power	wpbt0.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys	wpbt0.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc	wpbt0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wpbt0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wpbt0.exe"	wpbt0.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral20/memory/4860-0-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral20/memory/4860-1-0x0000000000400000-0x0000000000426000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 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:

wpbt0.exetaskkill.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wpbt0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3616 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3616 taskkill.exe

pid	process
3616	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	3616	taskkill.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wpbt0.exe

description	pid	process	target process
PID 4860 wrote to memory of 3616	4860	wpbt0.exe	taskkill.exe
PID 4860 wrote to memory of 3616	4860	wpbt0.exe	taskkill.exe
PID 4860 wrote to memory of 3616	4860	wpbt0.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\wpbt0.exe
"C:\Users\Admin\AppData\Local\Temp\wpbt0.exe"
1⤵
- Modifies WinLogon for persistence
- Impair Defenses: Safe Mode Boot
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /F /IM explorer.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Impair Defenses

T1562

Safe Mode Boot

T1562.009

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4860-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4860-1-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download