wannacry | c793de1761c905483f8aa252272be234167f427761bf5963d62c3079abd07fbb

General

Target

afaf3d6d673507d9c37030e8066debf2_JaffaCakes118.dll
Size

5.0MB
MD5

afaf3d6d673507d9c37030e8066debf2
SHA1

eea9cb74f65da131c725ae4c1b8f1a6c22550e21
SHA256

c793de1761c905483f8aa252272be234167f427761bf5963d62c3079abd07fbb
SHA512

4bfa4cfdc34d141a381c32305d57336728ed858356bed4e58cd894eb4d386760611e5786e7856eae8dedc90bb707ea5b10b0e091af3505f6826baa7e87ff8820
SSDEEP

49152:znAQqMSPbcBVqxJM0HDOMEc4Wg2sgJdVz:TDqPoB8xWaDfqWgU

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2663) 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

1736 mssecsvc.exe
2588 mssecsvc.exe
2708 tasksche.exe

pid	process
1736	mssecsvc.exe
2588	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\Wpad\{94A96D3C-8A18-4E4F-AE37-BE10AB0188D8}\WpadDecisionTime = 20393eed4dbfda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-de-bd-51-da-23	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	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94A96D3C-8A18-4E4F-AE37-BE10AB0188D8}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94A96D3C-8A18-4E4F-AE37-BE10AB0188D8}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94A96D3C-8A18-4E4F-AE37-BE10AB0188D8}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{94A96D3C-8A18-4E4F-AE37-BE10AB0188D8}\9e-de-bd-51-da-23	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-de-bd-51-da-23\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-de-bd-51-da-23\WpadDecisionTime = 20393eed4dbfda01	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 (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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0035000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\{94A96D3C-8A18-4E4F-AE37-BE10AB0188D8}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-de-bd-51-da-23\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\Connections	mssecsvc.exe
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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1488 wrote to memory of 1252	1488	rundll32.exe	rundll32.exe
PID 1252 wrote to memory of 1736	1252	rundll32.exe	mssecsvc.exe
PID 1252 wrote to memory of 1736	1252	rundll32.exe	mssecsvc.exe
PID 1252 wrote to memory of 1736	1252	rundll32.exe	mssecsvc.exe
PID 1252 wrote to memory of 1736	1252	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\afaf3d6d673507d9c37030e8066debf2_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1488

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\afaf3d6d673507d9c37030e8066debf2_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1252

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1736

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:2588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
252590280a7d839e9e4bda3a9b779cea

SHA1
cd92560a5cc513c049371298501f3b1798462681

SHA256
61066a77f8378be2fd75a003b592a643e1a6cb4779f49153939033b0da4adb5a

SHA512
e8bfd3061fb4c61fd9998071482b331a0fc87a1c26b59e03d9b9790e7d5442d2979c65df49cddb558205d2b413dfa933eed342a744dc1158756c64ec2bd74645

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
d3f3c469ee3d3311dc1ee49be3372624

SHA1
8b035c9e37a9325459d449d005f52a78220d6285

SHA256
7307345905917a1a2fc81e8c5aa0e47b63e7a1d13ab1840d7ee2fe18a24b253d

SHA512
913e5a0f2ad853c43a112c5786428b17ec76421b46e39506336d2095ce474ffdf4090668788c69a118011ac93b39baa1ba106ae72158db785fbaca190fd81ebe

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads