metasploit | 1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50

General

Target

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
Size

133KB
MD5

e03c7eb688a89ef0ca9047694f007501
SHA1

54ed9c9a6993dc029635f0cacd21c5713952b5af
SHA256

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50
SHA512

ba159158c2be64c53520d96b8690fb5435843b66832f0e656bd2133b9bace8444e0ba8e2b4eb6953cba996682cc691649b23d8c1c2ef57ad11c0ecacfa145b2e
SSDEEP

3072:XwH5lbkvEx/Oq9QR8Yhvk4uN7g3EkwEpy9AdqhjXi3nPgRdt:g0vUGqWR3sBgkAxAbi/gR/

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:

wmpkh32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpkh32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkh32.exe = "C:\\Windows\\SysWOW64\\wmpkh32.exe:*:Enabled:WinMedia Server"	wmpkh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpkh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpkh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpkh32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkh32.exe = "C:\\Windows\\SysWOW64\\wmpkh32.exe:*:Enabled:WinMedia Server"	wmpkh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpkh32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpkh32.exe

Executes dropped EXE 2 IoCs

Processes:

wmpkh32.exewmpkh32.exe

pid process

4616 wmpkh32.exe
3604 wmpkh32.exe

pid	process
4616	wmpkh32.exe
3604	wmpkh32.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1988-133-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1988-135-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1988-136-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1988-137-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1988-138-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/1988-148-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3604-149-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral2/memory/3604-150-0x0000000000400000-0x0000000000451000-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:

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmpkh32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WinMedia Server = "C:\\Windows\\SysWOW64\\wmpkh32.exe"	wmpkh32.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	wmpkh32.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:

wmpkh32.exe1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpkh32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpkh32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

Drops file in System32 directory 4 IoCs

Processes:

wmpkh32.exe1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	wmpkh32.exe
File opened for modification	C:\Windows\SysWOW64\	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
File opened for modification	C:\Windows\SysWOW64\wmpkh32.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
File created	C:\Windows\SysWOW64\wmpkh32.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exewmpkh32.exe

description	pid	process	target process
PID 2132 set thread context of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 4616 set thread context of 3604	4616	wmpkh32.exe	wmpkh32.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:

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exewmpkh32.exe

pid	process
1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
3604	wmpkh32.exe
3604	wmpkh32.exe
3604	wmpkh32.exe
3604	wmpkh32.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exewmpkh32.exewmpkh32.exe

description	pid	process	target process
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 2132 wrote to memory of 1988	2132	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
PID 1988 wrote to memory of 4616	1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	wmpkh32.exe
PID 1988 wrote to memory of 4616	1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	wmpkh32.exe
PID 1988 wrote to memory of 4616	1988	1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 4616 wrote to memory of 3604	4616	wmpkh32.exe	wmpkh32.exe
PID 3604 wrote to memory of 2948	3604	wmpkh32.exe	Explorer.EXE
PID 3604 wrote to memory of 2948	3604	wmpkh32.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2948

C:\Users\Admin\AppData\Local\Temp\1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
"C:\Users\Admin\AppData\Local\Temp\1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2132

C:\Users\Admin\AppData\Local\Temp\1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.exe
"C:\Users\Admin\AppData\Local\Temp\1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50.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:1988

C:\Windows\SysWOW64\wmpkh32.exe
"C:\Windows\SysWOW64\wmpkh32.exe" C:\Users\Admin\AppData\Local\Temp\1ECF96~1.EXE
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4616

C:\Windows\SysWOW64\wmpkh32.exe
"C:\Windows\SysWOW64\wmpkh32.exe" C:\Users\Admin\AppData\Local\Temp\1ECF96~1.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:3604

Network

MITRE ATT&CK Enterprise 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

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\wmpkh32.exe

Filesize
133KB

MD5
e03c7eb688a89ef0ca9047694f007501

SHA1
54ed9c9a6993dc029635f0cacd21c5713952b5af

SHA256
1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50

SHA512
ba159158c2be64c53520d96b8690fb5435843b66832f0e656bd2133b9bace8444e0ba8e2b4eb6953cba996682cc691649b23d8c1c2ef57ad11c0ecacfa145b2e

Download Submit
C:\Windows\SysWOW64\wmpkh32.exe

Filesize
133KB

MD5
e03c7eb688a89ef0ca9047694f007501

SHA1
54ed9c9a6993dc029635f0cacd21c5713952b5af

SHA256
1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50

SHA512
ba159158c2be64c53520d96b8690fb5435843b66832f0e656bd2133b9bace8444e0ba8e2b4eb6953cba996682cc691649b23d8c1c2ef57ad11c0ecacfa145b2e

Download Submit
C:\Windows\SysWOW64\wmpkh32.exe

Filesize
133KB

MD5
e03c7eb688a89ef0ca9047694f007501

SHA1
54ed9c9a6993dc029635f0cacd21c5713952b5af

SHA256
1ecf961d4f17d9becd56d9eb8fce1e1b5cc8e825c35587c0dc86fc25471e4e50

SHA512
ba159158c2be64c53520d96b8690fb5435843b66832f0e656bd2133b9bace8444e0ba8e2b4eb6953cba996682cc691649b23d8c1c2ef57ad11c0ecacfa145b2e

Download Submit
memory/1988-133-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1988-135-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1988-136-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1988-137-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1988-138-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1988-148-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1988-132-0x0000000000000000-mapping.dmp

Download
memory/3604-142-0x0000000000000000-mapping.dmp

Download
memory/3604-149-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/3604-150-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/4616-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads