wannacry | 6fcbdf245cb0454ca3b5c73a8e95b05243943cc41dd953c8b58a4a10fb5927bf

General

Target

7bc7e2443d94d8eb1c3a48d66a78df88_JaffaCakes118.dll
Size

5.0MB
MD5

7bc7e2443d94d8eb1c3a48d66a78df88
SHA1

da9a737463498dda2d012c58aabea475b511dfcf
SHA256

6fcbdf245cb0454ca3b5c73a8e95b05243943cc41dd953c8b58a4a10fb5927bf
SHA512

ea3ae834e1e0a3564f620c82243f063545e4147830d1242c0ef945c1b962494ebac8050c58400fef55f7011366f7c3eceaa51e773cde8a207e524d9629894c0c
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAsAMEcaEaue:+DqPoBhz1aRxcSUDk36SAn59

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3328) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2956 mssecsvc.exe
2076 mssecsvc.exe
2644 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

pid	process
2956	mssecsvc.exe
2076	mssecsvc.exe
2644	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
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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00aa000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{285CEA55-DED8-4E9A-915A-2BD2A0D69538}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{285CEA55-DED8-4E9A-915A-2BD2A0D69538}\96-32-83-09-e1-3f	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{285CEA55-DED8-4E9A-915A-2BD2A0D69538}	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-32-83-09-e1-3f	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-32-83-09-e1-3f\WpadDecisionReason = "1"	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\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{285CEA55-DED8-4E9A-915A-2BD2A0D69538}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{285CEA55-DED8-4E9A-915A-2BD2A0D69538}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{285CEA55-DED8-4E9A-915A-2BD2A0D69538}\WpadDecisionTime = a03bf6d5bbb0da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-32-83-09-e1-3f\WpadDecisionTime = a03bf6d5bbb0da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-32-83-09-e1-3f\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 2180 wrote to memory of 848	2180	rundll32.exe	rundll32.exe
PID 848 wrote to memory of 2956	848	rundll32.exe	mssecsvc.exe
PID 848 wrote to memory of 2956	848	rundll32.exe	mssecsvc.exe
PID 848 wrote to memory of 2956	848	rundll32.exe	mssecsvc.exe
PID 848 wrote to memory of 2956	848	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bc7e2443d94d8eb1c3a48d66a78df88_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7bc7e2443d94d8eb1c3a48d66a78df88_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:848

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2956

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2644

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:2076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
dbc9f4c22769d7341b844c24f7fbcf16

SHA1
fd371a370c13f104264368d9a53ab79fb089b01b

SHA256
2306c803072b84cf34deae75fbd88fd5e3c3315c701820bd4b095c9c2387e447

SHA512
6d1df9bed9ece167a421ba0d7a35064d689cd72c1555d1125feb328770f366d88ba0a5d5c97580a3e382c1ffcf64649f63826364125a7c363a346f6599039353

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c9ba6f9bac3799b172c71a168f59bcf5

SHA1
ecbbc0b1e5b6f2e009cc2cfee1f211bc51dfe59c

SHA256
8ff5a3629982e23658f1ee8e5cc1ec06ee0eecd5d9f26c93d791477f5b177bbf

SHA512
a2a8bf7d4adba348f68215ed2228f2cf9f60f5e5cb6f9bd836b2f37ebbbab16d4e1df4f6782b9eb2a4aa2194d594cafe5dbfeb1127b17f826887247efc0c58c3

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads