metasploit | 5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732

General

Target

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
Size

131KB
MD5

7b6130fe6846fa6d18d93a5fc94b6ec3
SHA1

15b05564b7807d07eaf9fa5fd9cb2610e69b5aba
SHA256

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732
SHA512

e3aed1ef5954536056979e9378ce0e9f275b3b3d85fd29a5dd010ae8741a0fa8d977b7f1282cd23c607bca63f056b229e2e92513339e19b08a552b32a5188a81
SSDEEP

3072:O+ctO5h09lly8A2G9j9lvPgn0jv/13FO6U06itJGThC57t:NctO5hN8nMj9lv0+jNfWTMt

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 4 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

wmpkc32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpkc32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkc32.exe = "C:\\Windows\\SysWOW64\\wmpkc32.exe:*:Enabled:WinMedia Config"	wmpkc32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpkc32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpkc32.exe = "C:\\Windows\\SysWOW64\\wmpkc32.exe:*:Enabled:WinMedia Config"	wmpkc32.exe

Executes dropped EXE 2 IoCs

Processes:

wmpkc32.exewmpkc32.exe

pid process

1208 wmpkc32.exe
1724 wmpkc32.exe

pid	process
1208	wmpkc32.exe
1724	wmpkc32.exe

UPX packed file 10 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1104-55-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-57-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-58-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-62-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-63-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-64-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-65-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1104-82-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1724-83-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1724-84-0x0000000000400000-0x0000000000451000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

wmpkc32.exe

pid process

1724 wmpkc32.exe

pid	process
1724	wmpkc32.exe

Loads dropped DLL 2 IoCs

Processes:

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe

pid	process
1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmpkc32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wmpkc32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WinMedia Config = "C:\\Windows\\SysWOW64\\wmpkc32.exe"	wmpkc32.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:

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exewmpkc32.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpkc32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	wmpkc32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe

Drops file in System32 directory 4 IoCs

Processes:

wmpkc32.exe5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	wmpkc32.exe
File opened for modification	C:\Windows\SysWOW64\	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
File opened for modification	C:\Windows\SysWOW64\wmpkc32.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
File created	C:\Windows\SysWOW64\wmpkc32.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exewmpkc32.exe

description	pid	process	target process
PID 1932 set thread context of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1208 set thread context of 1724	1208	wmpkc32.exe	wmpkc32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exewmpkc32.exe

pid	process
1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
1724	wmpkc32.exe
1724	wmpkc32.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exewmpkc32.exewmpkc32.exe

description	pid	process	target process
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1932 wrote to memory of 1104	1932	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
PID 1104 wrote to memory of 1208	1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	wmpkc32.exe
PID 1104 wrote to memory of 1208	1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	wmpkc32.exe
PID 1104 wrote to memory of 1208	1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	wmpkc32.exe
PID 1104 wrote to memory of 1208	1104	5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1208 wrote to memory of 1724	1208	wmpkc32.exe	wmpkc32.exe
PID 1724 wrote to memory of 1256	1724	wmpkc32.exe	Explorer.EXE
PID 1724 wrote to memory of 1256	1724	wmpkc32.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1256

C:\Users\Admin\AppData\Local\Temp\5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
"C:\Users\Admin\AppData\Local\Temp\5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1932

C:\Users\Admin\AppData\Local\Temp\5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe
"C:\Users\Admin\AppData\Local\Temp\5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732.exe"
3⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1104

C:\Windows\SysWOW64\wmpkc32.exe
"C:\Windows\SysWOW64\wmpkc32.exe" C:\Users\Admin\AppData\Local\Temp\5FBF2A~1.EXE
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1208

C:\Windows\SysWOW64\wmpkc32.exe
"C:\Windows\SysWOW64\wmpkc32.exe" C:\Users\Admin\AppData\Local\Temp\5FBF2A~1.EXE
5⤵
- 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
PID:1724

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

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\wmpkc32.exe

Filesize
131KB

MD5
7b6130fe6846fa6d18d93a5fc94b6ec3

SHA1
15b05564b7807d07eaf9fa5fd9cb2610e69b5aba

SHA256
5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732

SHA512
e3aed1ef5954536056979e9378ce0e9f275b3b3d85fd29a5dd010ae8741a0fa8d977b7f1282cd23c607bca63f056b229e2e92513339e19b08a552b32a5188a81

Download Submit
C:\Windows\SysWOW64\wmpkc32.exe

Filesize
131KB

MD5
7b6130fe6846fa6d18d93a5fc94b6ec3

SHA1
15b05564b7807d07eaf9fa5fd9cb2610e69b5aba

SHA256
5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732

SHA512
e3aed1ef5954536056979e9378ce0e9f275b3b3d85fd29a5dd010ae8741a0fa8d977b7f1282cd23c607bca63f056b229e2e92513339e19b08a552b32a5188a81

Download Submit
C:\Windows\SysWOW64\wmpkc32.exe

Filesize
131KB

MD5
7b6130fe6846fa6d18d93a5fc94b6ec3

SHA1
15b05564b7807d07eaf9fa5fd9cb2610e69b5aba

SHA256
5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732

SHA512
e3aed1ef5954536056979e9378ce0e9f275b3b3d85fd29a5dd010ae8741a0fa8d977b7f1282cd23c607bca63f056b229e2e92513339e19b08a552b32a5188a81

Download Submit
\Windows\SysWOW64\wmpkc32.exe

Filesize
131KB

MD5
7b6130fe6846fa6d18d93a5fc94b6ec3

SHA1
15b05564b7807d07eaf9fa5fd9cb2610e69b5aba

SHA256
5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732

SHA512
e3aed1ef5954536056979e9378ce0e9f275b3b3d85fd29a5dd010ae8741a0fa8d977b7f1282cd23c607bca63f056b229e2e92513339e19b08a552b32a5188a81

Download Submit
\Windows\SysWOW64\wmpkc32.exe

Filesize
131KB

MD5
7b6130fe6846fa6d18d93a5fc94b6ec3

SHA1
15b05564b7807d07eaf9fa5fd9cb2610e69b5aba

SHA256
5fbf2a5c36cf2d5b5c04fc3b3f13be6f93859bbaab2983b543fdbf3c59098732

SHA512
e3aed1ef5954536056979e9378ce0e9f275b3b3d85fd29a5dd010ae8741a0fa8d977b7f1282cd23c607bca63f056b229e2e92513339e19b08a552b32a5188a81

Download Submit
memory/1104-61-0x0000000075F51000-0x0000000075F53000-memory.dmp

Filesize
8KB

Download
memory/1104-55-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-63-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-64-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-65-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-54-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-59-0x000000000044EA60-mapping.dmp

Download
memory/1104-62-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-58-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-57-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1104-82-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1208-68-0x0000000000000000-mapping.dmp

Download
memory/1256-85-0x0000000002990000-0x00000000029AE000-memory.dmp

Filesize
120KB

Download
memory/1724-76-0x000000000044EA60-mapping.dmp

Download
memory/1724-83-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1724-84-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads