metasploit | b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c

General

Target

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
Size

205KB
MD5

857c66a8c57f4f160f83da8a08809531
SHA1

3321b31c97f63da5a004cb566d654ccfa4fa5b08
SHA256

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c
SHA512

f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195
SSDEEP

3072:jlYKvotj2t6M/cL5LlCImS4dXVn5cilIy6fg8z2sgQ2ScTJUjTwRikEwYiUHW:jyaEj2d/cL58IJ+TZmfgi8UnwEkETHW

Score

10^/10

metasploit backdoor evasion persistence trojan upx

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit

Modifies firewall policy service 2 TTPs 8 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

wmpkl32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpkl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpkl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpkl32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpkl32.exe
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

Executes dropped EXE 2 IoCs

Processes:

wmpkl32.exewmpkl32.exe

pid process

4660 wmpkl32.exe
4612 wmpkl32.exe

pid	process
4660	wmpkl32.exe
4612	wmpkl32.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4448-133-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/4448-135-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/4448-136-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/4448-137-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/4448-141-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/4612-148-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/4612-149-0x0000000000400000-0x0000000000451000-memory.dmp	upx

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

Processes:

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmpkl32.exe

description	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.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

wmpkl32.exeb218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpkl32.exe
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

Drops file in System32 directory 4 IoCs

Processes:

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exe

description	ioc	process
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
File opened for modification	C:\Windows\SysWOW64\	wmpkl32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exe

description	pid	process	target process
PID 916 set thread context of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 4660 set thread context of 4612	4660	wmpkl32.exe	wmpkl32.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exe

pid	process
4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
4612	wmpkl32.exe
4612	wmpkl32.exe
4612	wmpkl32.exe
4612	wmpkl32.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exeb218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exewmpkl32.exewmpkl32.exe

description	pid	process	target process
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 916 wrote to memory of 4448	916	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
PID 4448 wrote to memory of 4660	4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	wmpkl32.exe
PID 4448 wrote to memory of 4660	4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	wmpkl32.exe
PID 4448 wrote to memory of 4660	4448	b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4660 wrote to memory of 4612	4660	wmpkl32.exe	wmpkl32.exe
PID 4612 wrote to memory of 512	4612	wmpkl32.exe	Explorer.EXE
PID 4612 wrote to memory of 512	4612	wmpkl32.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:512

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
PID:916

C:\Users\Admin\AppData\Local\Temp\b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe
"C:\Users\Admin\AppData\Local\Temp\b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c.exe"
3⤵
- Checks computer location settings
- Maps connected drives based on registry
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4448

C:\Windows\SysWOW64\wmpkl32.exe
"C:\Windows\SysWOW64\wmpkl32.exe" C:\Users\Admin\AppData\Local\Temp\B21851~1.EXE
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4660

C:\Windows\SysWOW64\wmpkl32.exe
"C:\Windows\SysWOW64\wmpkl32.exe" C:\Users\Admin\AppData\Local\Temp\B21851~1.EXE
5⤵
- Modifies firewall policy service
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4612

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\wmpkl32.exe
Filesize
205KB

MD5
857c66a8c57f4f160f83da8a08809531

SHA1
3321b31c97f63da5a004cb566d654ccfa4fa5b08

SHA256
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c

SHA512
f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195

Download Submit
C:\Windows\SysWOW64\wmpkl32.exe
Filesize
205KB

MD5
857c66a8c57f4f160f83da8a08809531

SHA1
3321b31c97f63da5a004cb566d654ccfa4fa5b08

SHA256
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c

SHA512
f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195

Download Submit
C:\Windows\SysWOW64\wmpkl32.exe
Filesize
205KB

MD5
857c66a8c57f4f160f83da8a08809531

SHA1
3321b31c97f63da5a004cb566d654ccfa4fa5b08

SHA256
b218513df15724b38ded71d19a51e43f657512b6e960abc093fad4f028a8ae5c

SHA512
f6fec9e8880102aac18564d3137b7bb34da6cf7715f237739011a34962c655ef64d2847185f9edf2a802a2cf9f833b59f8f3593d2965edd4f839f79ad9ec1195

Download Submit
memory/4448-136-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4448-137-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4448-132-0x0000000000000000-mapping.dmp

Download
memory/4448-135-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4448-141-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4448-133-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4612-142-0x0000000000000000-mapping.dmp

Download
memory/4612-148-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4612-149-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4660-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads