Analysis
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max time kernel
111s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
05-12-2022 08:38
Static task
static1
Behavioral task
behavioral1
Sample
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
Resource
win10v2004-20220812-en
General
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Target
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
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Size
205KB
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MD5
857c66a8c57f4f160f83da8a08809531
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SHA1
3321b31c97f63da5a004cb566d654ccfa4fa5b08
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SHA256
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
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SHA512
f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
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SSDEEP
3072:jlYKvotj2t6M/cL5LlCImS4dXVn5cilIy6fg8z2sgQ2ScTJUjTwRikEwYiUHW:jyaEj2d/cL58IJ+TZmfgi8UnwEkETHW
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
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MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
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Modifies firewall policy service 2 TTPs 4 IoCs
Processes:
wmpkl32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkl32.exe = "C:\\Windows\\SysWOW64\\wmpkl32.exe:*:Enabled:WinMedia Services" wmpkl32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List wmpkl32.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkl32.exe = "C:\\Windows\\SysWOW64\\wmpkl32.exe:*:Enabled:WinMedia Services" wmpkl32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List wmpkl32.exe -
Executes dropped EXE 2 IoCs
Processes:
wmpkl32.exewmpkl32.exepid process 984 wmpkl32.exe 916 wmpkl32.exe -
Processes:
resource yara_rule behavioral1/memory/1984-55-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-57-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-58-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-63-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-62-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-64-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-65-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-66-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/1984-83-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/916-84-0x0000000000400000-0x0000000000451000-memory.dmp upx behavioral1/memory/916-85-0x0000000000400000-0x0000000000451000-memory.dmp upx -
Deletes itself 1 IoCs
Processes:
wmpkl32.exepid process 916 wmpkl32.exe -
Loads dropped DLL 2 IoCs
Processes:
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exepid process 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
wmpkl32.exedescription ioc process Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run wmpkl32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WinMedia Services = "C:\\Windows\\SysWOW64\\wmpkl32.exe" wmpkl32.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum wmpkl32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 wmpkl32.exe -
Drops file in System32 directory 4 IoCs
Processes:
wmpkl32.exeb218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exedescription ioc process File opened for modification C:\Windows\SysWOW64\ wmpkl32.exe File opened for modification C:\Windows\SysWOW64\ b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe File opened for modification C:\Windows\SysWOW64\wmpkl32.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe File created C:\Windows\SysWOW64\wmpkl32.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exedescription pid process target process PID 900 set thread context of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 984 set thread context of 916 984 wmpkl32.exe wmpkl32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exepid process 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe 916 wmpkl32.exe 916 wmpkl32.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exeb218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exewmpkl32.exedescription pid process target process PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 900 wrote to memory of 1984 900 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe PID 1984 wrote to memory of 984 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe wmpkl32.exe PID 1984 wrote to memory of 984 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe wmpkl32.exe PID 1984 wrote to memory of 984 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe wmpkl32.exe PID 1984 wrote to memory of 984 1984 b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 984 wrote to memory of 916 984 wmpkl32.exe wmpkl32.exe PID 916 wrote to memory of 1216 916 wmpkl32.exe Explorer.EXE PID 916 wrote to memory of 1216 916 wmpkl32.exe Explorer.EXE
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe"C:\Users\Admin\AppData\Local\Temp\b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe"C:\Users\Admin\AppData\Local\Temp\b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe"3⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\wmpkl32.exe"C:\Windows\SysWOW64\wmpkl32.exe" C:\Users\Admin\AppData\Local\Temp\B21851~1.EXE4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\wmpkl32.exe"C:\Windows\SysWOW64\wmpkl32.exe" C:\Users\Admin\AppData\Local\Temp\B21851~1.EXE5⤵
- Modifies firewall policy service
- Executes dropped EXE
- Deletes itself
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Windows\SysWOW64\wmpkl32.exeFilesize
205KB
MD5857c66a8c57f4f160f83da8a08809531
SHA13321b31c97f63da5a004cb566d654ccfa4fa5b08
SHA256b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
SHA512f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
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C:\Windows\SysWOW64\wmpkl32.exeFilesize
205KB
MD5857c66a8c57f4f160f83da8a08809531
SHA13321b31c97f63da5a004cb566d654ccfa4fa5b08
SHA256b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
SHA512f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
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C:\Windows\SysWOW64\wmpkl32.exeFilesize
205KB
MD5857c66a8c57f4f160f83da8a08809531
SHA13321b31c97f63da5a004cb566d654ccfa4fa5b08
SHA256b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
SHA512f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
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\Windows\SysWOW64\wmpkl32.exeFilesize
205KB
MD5857c66a8c57f4f160f83da8a08809531
SHA13321b31c97f63da5a004cb566d654ccfa4fa5b08
SHA256b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
SHA512f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
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\Windows\SysWOW64\wmpkl32.exeFilesize
205KB
MD5857c66a8c57f4f160f83da8a08809531
SHA13321b31c97f63da5a004cb566d654ccfa4fa5b08
SHA256b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
SHA512f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
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memory/916-85-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/916-84-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/916-77-0x000000000044EA50-mapping.dmp
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memory/984-69-0x0000000000000000-mapping.dmp
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memory/1216-86-0x0000000001DD0000-0x0000000001DEE000-memory.dmpFilesize
120KB
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memory/1984-61-0x0000000075571000-0x0000000075573000-memory.dmpFilesize
8KB
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memory/1984-66-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-65-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-64-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-62-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-63-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-54-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-59-0x000000000044EA50-mapping.dmp
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memory/1984-83-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-58-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-57-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB
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memory/1984-55-0x0000000000400000-0x0000000000451000-memory.dmpFilesize
324KB