metasploit | 8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981

General

Target

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
Size

196KB
MD5

3c181cfcea54d961d19e27963695dae8
SHA1

ee855b053ded0503b2521fe03b5cbf66e2dce67a
SHA256

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981
SHA512

54ce8d26b7b5b3e2054a4d9851478e8c655bb135d5d0ff144502b0d021e5fdcb38aacfe81cb1d5af6ab65a8dec4b467551f91a65311c59014ae86980cd23632d

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:

wmphb32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmphb32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmphb32.exe = "C:\\Windows\\SysWOW64\\wmphb32.exe:*:Enabled:Windows Host Network"	wmphb32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmphb32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmphb32.exe = "C:\\Windows\\SysWOW64\\wmphb32.exe:*:Enabled:Windows Host Network"	wmphb32.exe

Executes dropped EXE 2 IoCs

Processes:

wmphb32.exewmphb32.exe

pid process

1464 wmphb32.exe
1736 wmphb32.exe

pid	process
1464	wmphb32.exe
1736	wmphb32.exe

UPX packed file 12 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/308-55-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-57-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-58-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-63-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-64-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-65-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-66-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/308-81-0x0000000002D80000-0x0000000002DCD000-memory.dmp	upx
behavioral1/memory/308-86-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1736-84-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1736-88-0x0000000000400000-0x0000000000451000-memory.dmp	upx
behavioral1/memory/1736-89-0x0000000000400000-0x0000000000451000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

wmphb32.exe

pid process

1736 wmphb32.exe

pid	process
1736	wmphb32.exe

Loads dropped DLL 2 IoCs

Processes:

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe

pid	process
308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmphb32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wmphb32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Host Network = "C:\\Windows\\SysWOW64\\wmphb32.exe"	wmphb32.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:

wmphb32.exe8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmphb32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	wmphb32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe

Drops file in System32 directory 4 IoCs

Processes:

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exewmphb32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
File opened for modification	C:\Windows\SysWOW64\wmphb32.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
File created	C:\Windows\SysWOW64\wmphb32.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
File opened for modification	C:\Windows\SysWOW64\	wmphb32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exewmphb32.exe

description	pid	process	target process
PID 1308 set thread context of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1464 set thread context of 1736	1464	wmphb32.exe	wmphb32.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:

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exewmphb32.exe

pid	process
308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
1736	wmphb32.exe
1736	wmphb32.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exewmphb32.exewmphb32.exe

description	pid	process	target process
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 1308 wrote to memory of 308	1308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
PID 308 wrote to memory of 1464	308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	wmphb32.exe
PID 308 wrote to memory of 1464	308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	wmphb32.exe
PID 308 wrote to memory of 1464	308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	wmphb32.exe
PID 308 wrote to memory of 1464	308	8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1464 wrote to memory of 1736	1464	wmphb32.exe	wmphb32.exe
PID 1736 wrote to memory of 1396	1736	wmphb32.exe	Explorer.EXE
PID 1736 wrote to memory of 1396	1736	wmphb32.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1396

C:\Users\Admin\AppData\Local\Temp\8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
"C:\Users\Admin\AppData\Local\Temp\8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1308

C:\Users\Admin\AppData\Local\Temp\8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe
"C:\Users\Admin\AppData\Local\Temp\8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981.exe"
3⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:308

C:\Windows\SysWOW64\wmphb32.exe
"C:\Windows\SysWOW64\wmphb32.exe" C:\Users\Admin\AppData\Local\Temp\8241C0~1.EXE
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1464

C:\Windows\SysWOW64\wmphb32.exe
"C:\Windows\SysWOW64\wmphb32.exe" C:\Users\Admin\AppData\Local\Temp\8241C0~1.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:1736

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

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\wmphb32.exe
Filesize
196KB

MD5
3c181cfcea54d961d19e27963695dae8

SHA1
ee855b053ded0503b2521fe03b5cbf66e2dce67a

SHA256
8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981

SHA512
54ce8d26b7b5b3e2054a4d9851478e8c655bb135d5d0ff144502b0d021e5fdcb38aacfe81cb1d5af6ab65a8dec4b467551f91a65311c59014ae86980cd23632d

Download Submit
C:\Windows\SysWOW64\wmphb32.exe
Filesize
196KB

MD5
3c181cfcea54d961d19e27963695dae8

SHA1
ee855b053ded0503b2521fe03b5cbf66e2dce67a

SHA256
8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981

SHA512
54ce8d26b7b5b3e2054a4d9851478e8c655bb135d5d0ff144502b0d021e5fdcb38aacfe81cb1d5af6ab65a8dec4b467551f91a65311c59014ae86980cd23632d

Download Submit
C:\Windows\SysWOW64\wmphb32.exe
Filesize
196KB

MD5
3c181cfcea54d961d19e27963695dae8

SHA1
ee855b053ded0503b2521fe03b5cbf66e2dce67a

SHA256
8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981

SHA512
54ce8d26b7b5b3e2054a4d9851478e8c655bb135d5d0ff144502b0d021e5fdcb38aacfe81cb1d5af6ab65a8dec4b467551f91a65311c59014ae86980cd23632d

Download Submit
\Windows\SysWOW64\wmphb32.exe
Filesize
196KB

MD5
3c181cfcea54d961d19e27963695dae8

SHA1
ee855b053ded0503b2521fe03b5cbf66e2dce67a

SHA256
8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981

SHA512
54ce8d26b7b5b3e2054a4d9851478e8c655bb135d5d0ff144502b0d021e5fdcb38aacfe81cb1d5af6ab65a8dec4b467551f91a65311c59014ae86980cd23632d

Download Submit
\Windows\SysWOW64\wmphb32.exe
Filesize
196KB

MD5
3c181cfcea54d961d19e27963695dae8

SHA1
ee855b053ded0503b2521fe03b5cbf66e2dce67a

SHA256
8241c034f317bfc1fb229bec9e78a8877e6b06bac3754377a161df3031cc8981

SHA512
54ce8d26b7b5b3e2054a4d9851478e8c655bb135d5d0ff144502b0d021e5fdcb38aacfe81cb1d5af6ab65a8dec4b467551f91a65311c59014ae86980cd23632d

Download Submit
memory/308-62-0x0000000075261000-0x0000000075263000-memory.dmp

Filesize
8KB

Download
memory/308-57-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-63-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-64-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-65-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-66-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-82-0x0000000002D80000-0x0000000002DCD000-memory.dmp

Filesize
308KB

Download
memory/308-81-0x0000000002D80000-0x0000000002DCD000-memory.dmp

Filesize
308KB

Download
memory/308-58-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-59-0x000000000044EAB0-mapping.dmp

Download
memory/308-86-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-54-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/308-55-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1308-61-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1396-90-0x0000000002200000-0x000000000221E000-memory.dmp

Filesize
120KB

Download
memory/1464-80-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1464-69-0x0000000000000000-mapping.dmp

Download
memory/1736-84-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1736-77-0x000000000044EAB0-mapping.dmp

Download
memory/1736-88-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1736-89-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads