wannacry | f3422d64bb63fb12ffb95cee19fa02f14c83d7bffdfa443eb6a0c460da70d8dd

General

Target

2dec2553068c0e7f3a4506bf410260ad.dll
Size

5.0MB
MD5

2dec2553068c0e7f3a4506bf410260ad
SHA1

5970b85c06cbadf33567b1c05bc650e4a5978b31
SHA256

f3422d64bb63fb12ffb95cee19fa02f14c83d7bffdfa443eb6a0c460da70d8dd
SHA512

294811fc7352fc94a06bcd25e1cae2e2682ceddb633211ee156fa088c6dff727fa092cdde113bbbcb6cb24926b197f1eddd1974f49eb7e090e7e2eab1b073d8b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1304) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

668 mssecsvc.exe
1896 mssecsvc.exe
1700 tasksche.exe

pid	process
668	mssecsvc.exe
1896	mssecsvc.exe
1700	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

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

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

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

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

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadDecisionTime = 8030ae73d09bd801	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4\WpadDecisionTime = 8030ae73d09bd801	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\4e-00-ff-75-0c-a4	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EBF815A2-6CFB-432D-AF9F-7670E98E50F2}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-00-ff-75-0c-a4\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1432 wrote to memory of 1188	1432	rundll32.exe	rundll32.exe
PID 1188 wrote to memory of 668	1188	rundll32.exe	mssecsvc.exe
PID 1188 wrote to memory of 668	1188	rundll32.exe	mssecsvc.exe
PID 1188 wrote to memory of 668	1188	rundll32.exe	mssecsvc.exe
PID 1188 wrote to memory of 668	1188	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2dec2553068c0e7f3a4506bf410260ad.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1432

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2dec2553068c0e7f3a4506bf410260ad.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1188

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:668

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1700

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:1896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
df432148530b9908d656f1bd759fbf2d

SHA1
5011840074ed8bc8c4085e76dc4eb5afc3f13024

SHA256
9ccc2ac991e53773acbccd1449c46e4b7c2fea759442fafa65b98746bb79ed4d

SHA512
6fcff0e0524a499946d2dfc549ef94971a7bcaffca4e0bd3371f9a043d69501eb0009c45ce7601604d84b8b12984e78e601b5196a306409d461ca5e4b2163fe0

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
df432148530b9908d656f1bd759fbf2d

SHA1
5011840074ed8bc8c4085e76dc4eb5afc3f13024

SHA256
9ccc2ac991e53773acbccd1449c46e4b7c2fea759442fafa65b98746bb79ed4d

SHA512
6fcff0e0524a499946d2dfc549ef94971a7bcaffca4e0bd3371f9a043d69501eb0009c45ce7601604d84b8b12984e78e601b5196a306409d461ca5e4b2163fe0

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
df432148530b9908d656f1bd759fbf2d

SHA1
5011840074ed8bc8c4085e76dc4eb5afc3f13024

SHA256
9ccc2ac991e53773acbccd1449c46e4b7c2fea759442fafa65b98746bb79ed4d

SHA512
6fcff0e0524a499946d2dfc549ef94971a7bcaffca4e0bd3371f9a043d69501eb0009c45ce7601604d84b8b12984e78e601b5196a306409d461ca5e4b2163fe0

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
76d06d2096fe49ac97c2bf21709bbba4

SHA1
a7df08006ceafb441271c615c2e1d67218ba81a1

SHA256
945f2bb56bfef539d0404194bb7a7ac1f79b2307c33c8b196078c7b16bba098c

SHA512
b29a68783506989f55eaf6bf160ab285f4579e62e8ca01ad9ef3f4cfd460832a703641a52332a4880b3f8e5d5a63cde897776dd2756b9b9e930280e8dcfd0031

Download Submit
memory/668-56-0x0000000000000000-mapping.dmp

Download
memory/1188-54-0x0000000000000000-mapping.dmp

Download
memory/1188-55-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads