metasploit | b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674

General

Target

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
Size

146KB
MD5

6fb92e4e682d883b5b6a5515ceecc193
SHA1

aae7080629b32705ba53458bd5e1e64a2452a533
SHA256

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674
SHA512

324228551047bb5393e97f795fd0148d5f3837f6b6a2dfb8375a2ac8e41c56faf76efa008bbdfd72a3825788c50ce4463beb6eaf30d7760d234b226319e089a0
SSDEEP

3072:4JT1qW7iruj5ylq7voiDp8FxnVjTzXTl4SjBGSh/:+1qWX4lqboit6Vm5Sh/

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:

wmpbk86.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmpbk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile	wmpbk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications	wmpbk86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbk86.exe = "C:\\Windows\\SysWOW64\\wmpbk86.exe:*:Enabled:Windows Backup Service"	wmpbk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmpbk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	wmpbk86.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	wmpbk86.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbk86.exe = "C:\\Windows\\SysWOW64\\wmpbk86.exe:*:Enabled:Windows Backup Service"	wmpbk86.exe

Executes dropped EXE 2 IoCs

Processes:

wmpbk86.exewmpbk86.exe

pid process

4268 wmpbk86.exe
2352 wmpbk86.exe

pid	process
4268	wmpbk86.exe
2352	wmpbk86.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2360-133-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2360-135-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2360-136-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2360-137-0x0000000000400000-0x0000000000429000-memory.dmp	upx
behavioral2/memory/2352-147-0x0000000000400000-0x000000000044C000-memory.dmp	upx
behavioral2/memory/2352-148-0x0000000000400000-0x000000000044C000-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:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmpbk86.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	wmpbk86.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Backup Service = "C:\\Windows\\SysWOW64\\wmpbk86.exe"	wmpbk86.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:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exewmpbk86.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmpbk86.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	wmpbk86.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

Drops file in System32 directory 4 IoCs

Processes:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exewmpbk86.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
File opened for modification	C:\Windows\SysWOW64\wmpbk86.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
File created	C:\Windows\SysWOW64\wmpbk86.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
File opened for modification	C:\Windows\SysWOW64\	wmpbk86.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exewmpbk86.exe

description	pid	process	target process
PID 2416 set thread context of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 4268 set thread context of 2352	4268	wmpbk86.exe	wmpbk86.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:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exewmpbk86.exe

pid	process
2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
2352	wmpbk86.exe
2352	wmpbk86.exe
2352	wmpbk86.exe
2352	wmpbk86.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

pid process

2416 b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

pid	process
2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exeb0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exewmpbk86.exewmpbk86.exe

description	pid	process	target process
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2416 wrote to memory of 2360	2416	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
PID 2360 wrote to memory of 4268	2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	wmpbk86.exe
PID 2360 wrote to memory of 4268	2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	wmpbk86.exe
PID 2360 wrote to memory of 4268	2360	b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 4268 wrote to memory of 2352	4268	wmpbk86.exe	wmpbk86.exe
PID 2352 wrote to memory of 700	2352	wmpbk86.exe	Explorer.EXE
PID 2352 wrote to memory of 700	2352	wmpbk86.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:700

C:\Users\Admin\AppData\Local\Temp\b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
"C:\Users\Admin\AppData\Local\Temp\b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2416

C:\Users\Admin\AppData\Local\Temp\b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.exe
"C:\Users\Admin\AppData\Local\Temp\b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674.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:2360

C:\Windows\SysWOW64\wmpbk86.exe
"C:\Windows\SysWOW64\wmpbk86.exe" C:\Users\Admin\AppData\Local\Temp\B0B788~1.EXE
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4268

C:\Windows\SysWOW64\wmpbk86.exe
"C:\Windows\SysWOW64\wmpbk86.exe" C:\Users\Admin\AppData\Local\Temp\B0B788~1.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:2352

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\wmpbk86.exe
Filesize
146KB

MD5
6fb92e4e682d883b5b6a5515ceecc193

SHA1
aae7080629b32705ba53458bd5e1e64a2452a533

SHA256
b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674

SHA512
324228551047bb5393e97f795fd0148d5f3837f6b6a2dfb8375a2ac8e41c56faf76efa008bbdfd72a3825788c50ce4463beb6eaf30d7760d234b226319e089a0

Download Submit
C:\Windows\SysWOW64\wmpbk86.exe
Filesize
146KB

MD5
6fb92e4e682d883b5b6a5515ceecc193

SHA1
aae7080629b32705ba53458bd5e1e64a2452a533

SHA256
b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674

SHA512
324228551047bb5393e97f795fd0148d5f3837f6b6a2dfb8375a2ac8e41c56faf76efa008bbdfd72a3825788c50ce4463beb6eaf30d7760d234b226319e089a0

Download Submit
C:\Windows\SysWOW64\wmpbk86.exe
Filesize
146KB

MD5
6fb92e4e682d883b5b6a5515ceecc193

SHA1
aae7080629b32705ba53458bd5e1e64a2452a533

SHA256
b0b788d7e8a147b7341b4dddc713f88edcec6a47a73ce782ee906babb8144674

SHA512
324228551047bb5393e97f795fd0148d5f3837f6b6a2dfb8375a2ac8e41c56faf76efa008bbdfd72a3825788c50ce4463beb6eaf30d7760d234b226319e089a0

Download Submit
memory/2352-141-0x0000000000000000-mapping.dmp

Download
memory/2352-147-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2352-148-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2360-132-0x0000000000000000-mapping.dmp

Download
memory/2360-133-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2360-135-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2360-136-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2360-137-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4268-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads