wannacry | a4eeb9a04193c9ffc59a58d6f83e988c0f88066ae7cd9d21e2eea1b46032d0f0

General

Target

14f4159fa3b21c3b19dc164d299f028f_JaffaCakes118.dll
Size

5.0MB
MD5

14f4159fa3b21c3b19dc164d299f028f
SHA1

a45ac9e4480155a904b1fe3694f1ba7f5b299e36
SHA256

a4eeb9a04193c9ffc59a58d6f83e988c0f88066ae7cd9d21e2eea1b46032d0f0
SHA512

6e6eebfa0ca7f496d17eed921bd4f17adc14265f0e756cd364c30bd696236b9b0e9e31b5a647cc69d8ff7b41f82a4c707b532fb354fa35d7dd6f0d3fcc94ba0a
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEd1SPl3R8yAVp2H:+DqPe1Cxcxk3ZAESR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3284) 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

1692 mssecsvc.exe
2484 mssecsvc.exe
2508 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
1692	mssecsvc.exe
2484	mssecsvc.exe
2508	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\Connections	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	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67600140-557A-46D8-8EA8-DB0B52029A34}\WpadDecisionTime = 10e440807a9eda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-32-9f-40-50-8c	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	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67600140-557A-46D8-8EA8-DB0B52029A34}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-32-9f-40-50-8c\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-32-9f-40-50-8c\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\b2-32-9f-40-50-8c\WpadDecisionTime = 10e440807a9eda01	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\Content\CachePrefix	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67600140-557A-46D8-8EA8-DB0B52029A34}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67600140-557A-46D8-8EA8-DB0B52029A34}\WpadNetworkName = "Network 2"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67600140-557A-46D8-8EA8-DB0B52029A34}\b2-32-9f-40-50-8c	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{67600140-557A-46D8-8EA8-DB0B52029A34}\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 868	2992	rundll32.exe	rundll32.exe
PID 868 wrote to memory of 1692	868	rundll32.exe	mssecsvc.exe
PID 868 wrote to memory of 1692	868	rundll32.exe	mssecsvc.exe
PID 868 wrote to memory of 1692	868	rundll32.exe	mssecsvc.exe
PID 868 wrote to memory of 1692	868	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\14f4159fa3b21c3b19dc164d299f028f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2992

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\14f4159fa3b21c3b19dc164d299f028f_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:868

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1692

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2508

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:2484

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
e4c2e26d1495f98d5633720b75c9835f

SHA1
f7a496d36fe1795dfef51521887c6a5866ef74fe

SHA256
c01cb34dcdfe3cc283fc91b9ddfc3766d7c3bae3aabcff7fffb6dd6f11a708e6

SHA512
dc0bfeb182cc3e270e04ec947205d26b0fa5be3aa436dd1d04d00e3071a0af1bfa94a83b69fca73e03f05bac52e535c3631640dd5a284f2479f8404b3e9521b9

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

MD5
3f52585f62ee1604788397dc13f023aa

SHA1
236413a32328b26e2b0ac4ece456470adb09bec5

SHA256
c1b9cd4d80b5f36c6e5c5d5caae64fef11d1019dcaab561f59244fc07f79f612

SHA512
63341ccb7a856be1611dd65cefe748a74f1cac7692da581946ef2de9f01798f721dc6f9438bc49038ff47073206ea68f5b765ce14039d37ec337dd9b4c59ba43

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads