wannacry | 8586e3c76dfc9508e5f673b60c4074bc350975818bfc4341f52d3d2e21c9df37

General

Target

8ccf7186457ef4c6b372d6054d689cc8_JaffaCakes118.dll
Size

5.0MB
MD5

8ccf7186457ef4c6b372d6054d689cc8
SHA1

792b666fa116514853768e023f0b7c91192e3c84
SHA256

8586e3c76dfc9508e5f673b60c4074bc350975818bfc4341f52d3d2e21c9df37
SHA512

592f5ecacdec4dc95d1fe920399d583bbef60a16251d03bea338f607906baaad340891d41f1d3485487e0434079e017cda2741c64a01d3f6e6e8ce07666459b3
SSDEEP

49152:SnAQqMSPbcBVAx+TSqTdX1HkQo6SAARdhnvxJM0H9:+DqPoBKxcSUDk36SAEdhvxWa9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3252) 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

2404 mssecsvc.exe
3032 mssecsvc.exe
2708 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
2404	mssecsvc.exe
3032	mssecsvc.exe
2708	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\32-0d-03-16-96-cc\WpadDecisionTime = 20500793a0b4da01	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\Wpad\{C4BD23DC-E7FE-4C42-999E-0FA57D2A1D0F}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0d-03-16-96-cc\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C4BD23DC-E7FE-4C42-999E-0FA57D2A1D0F}	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00dc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C4BD23DC-E7FE-4C42-999E-0FA57D2A1D0F}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C4BD23DC-E7FE-4C42-999E-0FA57D2A1D0F}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0d-03-16-96-cc	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\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
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\{C4BD23DC-E7FE-4C42-999E-0FA57D2A1D0F}\WpadDecisionTime = 20500793a0b4da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{C4BD23DC-E7FE-4C42-999E-0FA57D2A1D0F}\32-0d-03-16-96-cc	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\32-0d-03-16-96-cc\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 1992 wrote to memory of 876	1992	rundll32.exe	rundll32.exe
PID 876 wrote to memory of 2404	876	rundll32.exe	mssecsvc.exe
PID 876 wrote to memory of 2404	876	rundll32.exe	mssecsvc.exe
PID 876 wrote to memory of 2404	876	rundll32.exe	mssecsvc.exe
PID 876 wrote to memory of 2404	876	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ccf7186457ef4c6b372d6054d689cc8_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1992

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8ccf7186457ef4c6b372d6054d689cc8_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:876

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2404

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2708

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:3032

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
01196b7babbd92db305bf7c1643c9dfa

SHA1
e46de9f00c5226e0a6607a66cb7d0efa8c8c7ce9

SHA256
6ce5bb76a661cac4696de397d4d2ddefd4e4bb1ac991b78dd1006e5e636a44ee

SHA512
5939693ff2de7c2a5539e78db9a3533dedcc54b93cf1279792359520ffb5133a3f39ac07a732a4b9bcb5038b0fa22f41ce803a627d3da46acf20cfbdde1c99ee

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

MD5
1e3436bc7ad4399c8819a010c8cef49f

SHA1
7b013c417faa3251e66d050cd5e304fd4c5fa712

SHA256
5cbe015349c04206635fdbecabfe7a6b027142f22dcfe2e01ae299e2c2181389

SHA512
b4a673b791a5668802cb817196e4018858b89da3305be6546e33b3fa805c20aff487536345b89987cc800a6f11f6b29376e56ae9b818ded64948ea2222731b99

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads