wannacry | 78b9266c829855c84e60aa307f8db20efdfa805524f94a0670ba9415b69279c6

General

Target

301a97555113f7129e95d7567b4ca3eb_JaffaCakes118.dll
Size

5.0MB
MD5

301a97555113f7129e95d7567b4ca3eb
SHA1

a41a4889589bfde1e30ce014b75f8320af1d5dec
SHA256

78b9266c829855c84e60aa307f8db20efdfa805524f94a0670ba9415b69279c6
SHA512

bc2e1dffe144391113986053742ad7e02cc9183e65f64b11a40321550a001c8b4e51e76736625f025a46b2772b84878710e0d5b6fdc9ce834994f69847fdc4f9
SSDEEP

98304:TDqPoBhz1oDk36SAEdhvxWa9P593R8yAVp2H:TDqPe18k3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3248) 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

2224 mssecsvc.exe
2608 mssecsvc.exe
2672 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
2224	mssecsvc.exe
2608	mssecsvc.exe
2672	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\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0076000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecisionTime = d06fcab2faa2da01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecisionTime = d06fcab2faa2da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecision = "0"	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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51\WpadDecisionReason = "1"	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\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-44-fa-05-dd-51	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\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\8e-44-fa-05-dd-51	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94ABF82B-B9EB-4DA9-BD02-A10312DA8EE7}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 2896 wrote to memory of 1516	2896	rundll32.exe	rundll32.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe
PID 1516 wrote to memory of 2224	1516	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\301a97555113f7129e95d7567b4ca3eb_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2896

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\301a97555113f7129e95d7567b4ca3eb_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1516

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2224

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2672

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:2608

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
286a7252f5c84bdb3cceee901884f4ae

SHA1
4da0e4b2d9766bb2498c77d11f967c3afe45f20a

SHA256
41aba8984ecca9d2bb1d04164da0fbbb7f0252c04f06ed0f00375e87ed3b769f

SHA512
1752272c7ec14cf0036d42852cc97c2af2fb65b0c62e6fcf5ace87c6be077eae8e7924f3cbd8d1efac37fcf3301688928e56a96d7168fa7b932a2e2ea67112ef

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

MD5
55fab98040c6c26571ee66b143723715

SHA1
243e8d510513b2c7e6fa654e0d25757644cdb802

SHA256
ee70cb0c076f083ab4cd584a142fcfe00e4481a4efd4ec6e09c9cc56cb7dcbb3

SHA512
deebaca1ac2ffacedc937a63e0509632786b464c290227b3433b31f8a85185dd07e2597921e62173c2db7fb539622830015bf21c57ea26645d99bff64d9509b3

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads