05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a

Analysis

max time kernel
149s
max time network
138s
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, 19:22

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General

Target

05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe
Size

1.6MB
MD5

71acfda42393b53d4967bc1014c3f498
SHA1

e1ee52e20724185d63e3529437533231c51c87cc
SHA256

05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a
SHA512

907c394c442ed9d6390bb39f34927974803e31f4c9b31734a8bbb85bb90d26d1c0b9dd3c21cd826d7b04e500cf1a7de7c100a18fdc88134432f17730172d3766
SSDEEP

12288:WB5a3hizhz/o456rn9lkQ8rxQslgBKR1jl9RL9BVnDXLmoIY7Tm+jZFluq9wd4Ue:WkB4tpHlgGjlLHlFoq2d5e

Score

10^/10

discovery evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 3 TTPs 10 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\Windows Updater.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Updater.exe:*:Enabled:Windows Messanger"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\winupdt.exe:*:Enabled:Windows Messanger"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe

Executes dropped EXE 2 IoCs

pid	Process
4780	winupdt.exe
4180	winupdt.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window Updates = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Update\\winupdt.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4780 set thread context of 4180	4780	winupdt.exe	88

UPX packed file 14 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4180-31-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-35-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-37-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-43-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-45-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-47-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-48-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-49-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-51-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-52-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-53-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-57-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-58-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/4180-61-0x0000000000400000-0x000000000045C000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 13 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry key 1 TTPs 4 IoCs

Modify Registry

T1112

pid	Process
3704	reg.exe
2884	reg.exe
3628	reg.exe
4836	reg.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: 1	4180	winupdt.exe
Token: SeCreateTokenPrivilege	4180	winupdt.exe
Token: SeAssignPrimaryTokenPrivilege	4180	winupdt.exe
Token: SeLockMemoryPrivilege	4180	winupdt.exe
Token: SeIncreaseQuotaPrivilege	4180	winupdt.exe
Token: SeMachineAccountPrivilege	4180	winupdt.exe
Token: SeTcbPrivilege	4180	winupdt.exe
Token: SeSecurityPrivilege	4180	winupdt.exe
Token: SeTakeOwnershipPrivilege	4180	winupdt.exe
Token: SeLoadDriverPrivilege	4180	winupdt.exe
Token: SeSystemProfilePrivilege	4180	winupdt.exe
Token: SeSystemtimePrivilege	4180	winupdt.exe
Token: SeProfSingleProcessPrivilege	4180	winupdt.exe
Token: SeIncBasePriorityPrivilege	4180	winupdt.exe
Token: SeCreatePagefilePrivilege	4180	winupdt.exe
Token: SeCreatePermanentPrivilege	4180	winupdt.exe
Token: SeBackupPrivilege	4180	winupdt.exe
Token: SeRestorePrivilege	4180	winupdt.exe
Token: SeShutdownPrivilege	4180	winupdt.exe
Token: SeDebugPrivilege	4180	winupdt.exe
Token: SeAuditPrivilege	4180	winupdt.exe
Token: SeSystemEnvironmentPrivilege	4180	winupdt.exe
Token: SeChangeNotifyPrivilege	4180	winupdt.exe
Token: SeRemoteShutdownPrivilege	4180	winupdt.exe
Token: SeUndockPrivilege	4180	winupdt.exe
Token: SeSyncAgentPrivilege	4180	winupdt.exe
Token: SeEnableDelegationPrivilege	4180	winupdt.exe
Token: SeManageVolumePrivilege	4180	winupdt.exe
Token: SeImpersonatePrivilege	4180	winupdt.exe
Token: SeCreateGlobalPrivilege	4180	winupdt.exe
Token: 31	4180	winupdt.exe
Token: 32	4180	winupdt.exe
Token: 33	4180	winupdt.exe
Token: 34	4180	winupdt.exe
Token: 35	4180	winupdt.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe
4780	winupdt.exe
4180	winupdt.exe
4180	winupdt.exe
4180	winupdt.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 2112	5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe	83
PID 5004 wrote to memory of 2112	5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe	83
PID 5004 wrote to memory of 2112	5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe	83
PID 2112 wrote to memory of 2864	2112	cmd.exe	86
PID 2112 wrote to memory of 2864	2112	cmd.exe	86
PID 2112 wrote to memory of 2864	2112	cmd.exe	86
PID 5004 wrote to memory of 4780	5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe	87
PID 5004 wrote to memory of 4780	5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe	87
PID 5004 wrote to memory of 4780	5004	05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe	87
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4780 wrote to memory of 4180	4780	winupdt.exe	88
PID 4180 wrote to memory of 1384	4180	winupdt.exe	89
PID 4180 wrote to memory of 1384	4180	winupdt.exe	89
PID 4180 wrote to memory of 1384	4180	winupdt.exe	89
PID 4180 wrote to memory of 2632	4180	winupdt.exe	90
PID 4180 wrote to memory of 2632	4180	winupdt.exe	90
PID 4180 wrote to memory of 2632	4180	winupdt.exe	90
PID 4180 wrote to memory of 2124	4180	winupdt.exe	91
PID 4180 wrote to memory of 2124	4180	winupdt.exe	91
PID 4180 wrote to memory of 2124	4180	winupdt.exe	91
PID 4180 wrote to memory of 4116	4180	winupdt.exe	92
PID 4180 wrote to memory of 4116	4180	winupdt.exe	92
PID 4180 wrote to memory of 4116	4180	winupdt.exe	92
PID 1384 wrote to memory of 3628	1384	cmd.exe	97
PID 1384 wrote to memory of 3628	1384	cmd.exe	97
PID 1384 wrote to memory of 3628	1384	cmd.exe	97
PID 4116 wrote to memory of 3704	4116	cmd.exe	99
PID 4116 wrote to memory of 3704	4116	cmd.exe	99
PID 4116 wrote to memory of 3704	4116	cmd.exe	99
PID 2632 wrote to memory of 4836	2632	cmd.exe	98
PID 2632 wrote to memory of 4836	2632	cmd.exe	98
PID 2632 wrote to memory of 4836	2632	cmd.exe	98
PID 2124 wrote to memory of 2884	2124	cmd.exe	100
PID 2124 wrote to memory of 2884	2124	cmd.exe	100
PID 2124 wrote to memory of 2884	2124	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe
"C:\Users\Admin\AppData\Local\Temp\05cd97b8817ccb13f8e7f24fd678298c21f21e5409816e9dc4ac144bf96c3b5a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\lkXsA.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2112
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Window Updates" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2864
- C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
  "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe
    "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4180
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1384
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        5⤵
        Modifies firewall policy service
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:3628
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2632
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.exe:*:Enabled:Windows Messanger" /f
        5⤵
        Modifies firewall policy service
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:4836
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2124
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        5⤵
        Modifies firewall policy service
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:2884
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4116
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\Windows Updater.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Windows Updater.exe:*:Enabled:Windows Messanger" /f
        5⤵
        Modifies firewall policy service
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:3704

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lkXsA.txt

Filesize
158B

MD5
1954c7e666c5b4d1117ef07bc0c9b8ec

SHA1
559e3c0273c1463e9184027b749bdaad0a372681

SHA256
35e0dbc8b455ca38976157ce9d0293fd6cdca20f46f1cb69058a1e0f0af6f693

SHA512
3939de8d0ab7e67b59ff8bebed5580dafd38d8785193fd42a289728500761a68b9e6660605e19e10d4278dd106fea4b273a208f25485e7389c8f19b2958c926a

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update\winupdt.txt

Filesize
1.6MB

MD5
1a64350c1fb278f742541b049e343eb9

SHA1
444b50a9351656ad0dfaa0a75bbf819f2efb5dcb

SHA256
7d6c018db6584a52d15e11acd773dc65fa9bfb04124b0dd8858820eaad7e8074

SHA512
0898777399eb151aa0d216167a5b5f5d811462507ffc71a5fdded5504b762a6dc4f7e87d2cc5c1a4c7256a8aec1b159a2ad3624cfa61ed2666ec0911dc3611e3

Download Submit
memory/4180-47-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-48-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-35-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-37-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-43-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-45-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-61-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-31-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-49-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-51-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-52-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-53-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-57-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4180-58-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/5004-0-0x0000000000400000-0x00000000005A3000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads