metasploit | f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570

General

Target

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
Size

260KB
MD5

d06bfa27038a36e86d8b929f21f3baba
SHA1

c0d6832da223c06fa51a54a72e60334b68c11439
SHA256

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570
SHA512

73753e84fc8a61de0a9628825a5baa5e9fb6d8fad880d85a417cec14a45a90827d1525f4678dacae07fc89f5dfd7f60ed099296b7f841f6865d08ce92db80038
SSDEEP

3072:aaVG1jiGIoDclTE2lgfUQCAVtIFhYu/UD6Iv3iuJw+u5UBidlQCCKNYEJd8vnvy:ap4poDeA5fnVtghYuBEiYqU/C5OEwvv

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:

wmprk64.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	wmprk64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmprk64.exe = "C:\\Windows\\SysWOW64\\wmprk64.exe:*:Enabled:Windows Home Media"	wmprk64.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List	wmprk64.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmprk64.exe = "C:\\Windows\\SysWOW64\\wmprk64.exe:*:Enabled:Windows Home Media"	wmprk64.exe

Executes dropped EXE 2 IoCs

Processes:

wmprk64.exewmprk64.exe

pid process

2004 wmprk64.exe
376 wmprk64.exe

pid	process
2004	wmprk64.exe
376	wmprk64.exe

Sets file execution options in registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmprk64.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe\Debugger = "CMD /C>null"	wmprk64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe	wmprk64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe\Debugger = "CMD /C>null"	wmprk64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe	wmprk64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe\Debugger = "CMD /C>null"	wmprk64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe	wmprk64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\epplauncher.exe\Debugger = "CMD /C>null"	wmprk64.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe	wmprk64.exe

Sets service image path in registry 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Processes:

wmprk64.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MsMpSvc\ImagePath = "CMD /C>null" wmprk64.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MsMpSvc\ImagePath = "CMD /C>null"	wmprk64.exe

UPX packed file 13 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1600-55-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-57-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-58-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-60-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-64-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-65-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-66-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-67-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/1600-72-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/376-85-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/376-86-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/376-87-0x0000000000400000-0x0000000000461000-memory.dmp	upx
behavioral1/memory/376-88-0x0000000000400000-0x0000000000461000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

wmprk64.exe

pid process

376 wmprk64.exe

pid	process
376	wmprk64.exe

Loads dropped DLL 2 IoCs

Processes:

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe

pid	process
1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wmprk64.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wmprk64.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Home Media = "C:\\Windows\\SysWOW64\\wmprk64.exe"	wmprk64.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:

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exewmprk64.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	wmprk64.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	wmprk64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe

Drops file in System32 directory 5 IoCs

Processes:

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exewmprk64.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
File opened for modification	C:\Windows\SysWOW64\wmprk64.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
File created	C:\Windows\SysWOW64\wmprk64.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
File opened for modification	C:\Windows\SysWOW64\	wmprk64.exe
File opened for modification	C:\Windows\SysWOW64\wmprk64.exe	wmprk64.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exewmprk64.exe

description	pid	process	target process
PID 1740 set thread context of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 2004 set thread context of 376	2004	wmprk64.exe	wmprk64.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 7 IoCs

Processes:

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exewmprk64.exe

pid	process
1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
376	wmprk64.exe
376	wmprk64.exe
376	wmprk64.exe
376	wmprk64.exe
376	wmprk64.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exef1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exewmprk64.exewmprk64.exe

description	pid	process	target process
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1740 wrote to memory of 1600	1740	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
PID 1600 wrote to memory of 2004	1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	wmprk64.exe
PID 1600 wrote to memory of 2004	1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	wmprk64.exe
PID 1600 wrote to memory of 2004	1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	wmprk64.exe
PID 1600 wrote to memory of 2004	1600	f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 2004 wrote to memory of 376	2004	wmprk64.exe	wmprk64.exe
PID 376 wrote to memory of 1208	376	wmprk64.exe	Explorer.EXE
PID 376 wrote to memory of 1208	376	wmprk64.exe	Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
"C:\Users\Admin\AppData\Local\Temp\f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740

C:\Users\Admin\AppData\Local\Temp\f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe
"C:\Users\Admin\AppData\Local\Temp\f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570.exe"
2⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1600

C:\Windows\SysWOW64\wmprk64.exe
"C:\Windows\SysWOW64\wmprk64.exe" C:\Users\Admin\AppData\Local\Temp\F1CF40~1.EXE
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\SysWOW64\wmprk64.exe
"C:\Windows\SysWOW64\wmprk64.exe" C:\Users\Admin\AppData\Local\Temp\F1CF40~1.EXE
4⤵
- Modifies firewall policy service
- Executes dropped EXE
- Sets file execution options in registry
- Sets service image path in registry
- 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:376

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1208

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

3

T1060

Privilege Escalation

Defense Evasion

Modify Registry

4

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\wmprk64.exe
Filesize
260KB

MD5
d06bfa27038a36e86d8b929f21f3baba

SHA1
c0d6832da223c06fa51a54a72e60334b68c11439

SHA256
f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570

SHA512
73753e84fc8a61de0a9628825a5baa5e9fb6d8fad880d85a417cec14a45a90827d1525f4678dacae07fc89f5dfd7f60ed099296b7f841f6865d08ce92db80038

Download Submit
C:\Windows\SysWOW64\wmprk64.exe
Filesize
260KB

MD5
d06bfa27038a36e86d8b929f21f3baba

SHA1
c0d6832da223c06fa51a54a72e60334b68c11439

SHA256
f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570

SHA512
73753e84fc8a61de0a9628825a5baa5e9fb6d8fad880d85a417cec14a45a90827d1525f4678dacae07fc89f5dfd7f60ed099296b7f841f6865d08ce92db80038

Download Submit
C:\Windows\SysWOW64\wmprk64.exe
Filesize
260KB

MD5
d06bfa27038a36e86d8b929f21f3baba

SHA1
c0d6832da223c06fa51a54a72e60334b68c11439

SHA256
f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570

SHA512
73753e84fc8a61de0a9628825a5baa5e9fb6d8fad880d85a417cec14a45a90827d1525f4678dacae07fc89f5dfd7f60ed099296b7f841f6865d08ce92db80038

Download Submit
\Windows\SysWOW64\wmprk64.exe
Filesize
260KB

MD5
d06bfa27038a36e86d8b929f21f3baba

SHA1
c0d6832da223c06fa51a54a72e60334b68c11439

SHA256
f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570

SHA512
73753e84fc8a61de0a9628825a5baa5e9fb6d8fad880d85a417cec14a45a90827d1525f4678dacae07fc89f5dfd7f60ed099296b7f841f6865d08ce92db80038

Download Submit
\Windows\SysWOW64\wmprk64.exe
Filesize
260KB

MD5
d06bfa27038a36e86d8b929f21f3baba

SHA1
c0d6832da223c06fa51a54a72e60334b68c11439

SHA256
f1cf4079dc53f0d1d607ff0bd64bed5e8ec5a0d93889264bcd597d2df4521570

SHA512
73753e84fc8a61de0a9628825a5baa5e9fb6d8fad880d85a417cec14a45a90827d1525f4678dacae07fc89f5dfd7f60ed099296b7f841f6865d08ce92db80038

Download Submit
memory/376-88-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/376-87-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/376-86-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/376-85-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/376-81-0x0000000000450920-mapping.dmp

Download
memory/1208-89-0x00000000021F0000-0x000000000220E000-memory.dmp

Filesize
120KB

Download
memory/1600-66-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-54-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-58-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-57-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-72-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-67-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-55-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-60-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-65-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-64-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1600-63-0x0000000075281000-0x0000000075283000-memory.dmp

Filesize
8KB

Download
memory/1600-61-0x0000000000450920-mapping.dmp

Download
memory/2004-70-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads