wannacry | 41702a962d24752381830debe8bfa2a257b7f577174c2ee97ea4ac8279e24afe

General

Target

41702a962d24752381830debe8bfa2a257b7f577174c2ee97ea4ac8279e24afe.dll
Size

5.0MB
MD5

747b122d2ac5005ca8f29a5b8dc4a510
SHA1

1dfff0f3e4db78ce4b464384e6b10527aed21a83
SHA256

41702a962d24752381830debe8bfa2a257b7f577174c2ee97ea4ac8279e24afe
SHA512

aafd304192cf3ad707bcf3b9f936dbdccfd07f6f2640b684d4a3c9d04097eed6b7c6cd80955814ac1828cdcbc6fd7f6290131f6c53b686a5d83fa0012773e789

Score

10^/10

wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Executes dropped EXE 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

1984 mssecsvr.exe
1016 mssecsvr.exe

pid	process
1984	mssecsvr.exe
1016	mssecsvr.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvr.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A33DB50-CC69-497D-AB93-6EAB524EB9A7}\WpadDecisionTime = a03685b8bc48d701	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-d9-53-2b-a4-64\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-d9-53-2b-a4-64\WpadDecision = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a070021000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-d9-53-2b-a4-64\WpadDecisionTime = a03685b8bc48d701	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A33DB50-CC69-497D-AB93-6EAB524EB9A7}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A33DB50-CC69-497D-AB93-6EAB524EB9A7}\WpadDecision = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A33DB50-CC69-497D-AB93-6EAB524EB9A7}\WpadNetworkName = "Network"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ea-d9-53-2b-a4-64	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A33DB50-CC69-497D-AB93-6EAB524EB9A7}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3A33DB50-CC69-497D-AB93-6EAB524EB9A7}\ea-d9-53-2b-a4-64	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 1052 wrote to memory of 836	1052	rundll32.exe	rundll32.exe
PID 836 wrote to memory of 1984	836	rundll32.exe	mssecsvr.exe
PID 836 wrote to memory of 1984	836	rundll32.exe	mssecsvr.exe
PID 836 wrote to memory of 1984	836	rundll32.exe	mssecsvr.exe
PID 836 wrote to memory of 1984	836	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41702a962d24752381830debe8bfa2a257b7f577174c2ee97ea4ac8279e24afe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1052

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\41702a962d24752381830debe8bfa2a257b7f577174c2ee97ea4ac8279e24afe.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:836

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1984

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1016

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
MD5
06e78b5b0d8da6a5411613c4c75d27e7

SHA1
cee5e801a9fbd7f50515983fe4784fdf91eea5a2

SHA256
6396533d8a3fcef9bd5cc47449de1dd3c3c6dac03104c85f0a8cfae9e85f7dde

SHA512
b3b9138fdc14fa2666e97ad08b3fad9ddebab7c523ed578e38794c3d4d55133318aa8094e5f94a4918ec510706ec8b2cf0a03107b12a3d4ab9c84b2a96ab9feb

Download Submit
C:\Windows\mssecsvr.exe
MD5
06e78b5b0d8da6a5411613c4c75d27e7

SHA1
cee5e801a9fbd7f50515983fe4784fdf91eea5a2

SHA256
6396533d8a3fcef9bd5cc47449de1dd3c3c6dac03104c85f0a8cfae9e85f7dde

SHA512
b3b9138fdc14fa2666e97ad08b3fad9ddebab7c523ed578e38794c3d4d55133318aa8094e5f94a4918ec510706ec8b2cf0a03107b12a3d4ab9c84b2a96ab9feb

Download Submit
C:\Windows\mssecsvr.exe
MD5
06e78b5b0d8da6a5411613c4c75d27e7

SHA1
cee5e801a9fbd7f50515983fe4784fdf91eea5a2

SHA256
6396533d8a3fcef9bd5cc47449de1dd3c3c6dac03104c85f0a8cfae9e85f7dde

SHA512
b3b9138fdc14fa2666e97ad08b3fad9ddebab7c523ed578e38794c3d4d55133318aa8094e5f94a4918ec510706ec8b2cf0a03107b12a3d4ab9c84b2a96ab9feb

Download Submit
memory/836-60-0x0000000000000000-mapping.dmp

Download
memory/836-61-0x0000000074D91000-0x0000000074D93000-memory.dmp

Filesize
8KB

Download
memory/1984-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads