wannacry | 62fb410164bc67a5c81c285f49c3ae5f89135e7c2ee5330fd502f316af10abfe

General

Target

73331cde051c30581067620c3eeb6bec_JaffaCakes118.dll
Size

5.0MB
MD5

73331cde051c30581067620c3eeb6bec
SHA1

c93c9b7e810e5d2ce1b577139d5e96802b539cc2
SHA256

62fb410164bc67a5c81c285f49c3ae5f89135e7c2ee5330fd502f316af10abfe
SHA512

c172a37078f0104e3046c7ba7142512ae6041b8c6041c0cd4427f22a8aeb344989b5f29295862e76f0a9a6bf8e50db77c60166bdee9511c5a751093d93b54557
SSDEEP

49152:SnAQqmQejcNRx+TSqTdX1HkQo6SAAIvxJM0H9PAMEcaEau3:+DqiqRxcSUDk36SA5xWa9P593

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3183) 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

1680 mssecsvc.exe
2572 mssecsvc.exe
3028 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
1680	mssecsvc.exe
2572	mssecsvc.exe
3028	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 = 30ed75e8e4aeda01	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\WpadDecisionReason = "1"	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\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0035000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-de-bd-51-da-23\WpadDecisionTime = 30ed75e8e4aeda01	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
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}\9e-de-bd-51-da-23	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	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
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 (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\Content\CachePrefix	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\ZoneMap\	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\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\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 2740 wrote to memory of 1176	2740	rundll32.exe	rundll32.exe
PID 1176 wrote to memory of 1680	1176	rundll32.exe	mssecsvc.exe
PID 1176 wrote to memory of 1680	1176	rundll32.exe	mssecsvc.exe
PID 1176 wrote to memory of 1680	1176	rundll32.exe	mssecsvc.exe
PID 1176 wrote to memory of 1680	1176	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\73331cde051c30581067620c3eeb6bec_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2740

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\73331cde051c30581067620c3eeb6bec_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1176

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1680

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3028

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:2572

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
ac08f2b382b38e4eb13414dca939c8c1

SHA1
c0866c471659b277f4b8dbcf5888a77694894261

SHA256
f17029a0781b749050cc56757875232e375459c043ef3b042f2ec32d1d4dbe9f

SHA512
c038c2835f8215fd867e669ee076b9dbe98ca81e106b30e75eed821f02680274eb0cb2ced1c8101f281c4e875e0a5075aa9d40f9d847bc3c2b81e9e685584371

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C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
7d6ec20aeb4931acd69f970369797149

SHA1
fba3f597ddbeab4d540942e5061be45d739d9de7

SHA256
f37d14ebc85c29ae9f0dcc5d2522e7ac4590c199868b497938a77644002d717b

SHA512
2804021e9484d240cd9e8e3d40118d0568ff317997f5852bb8bad120bcbf1fe163c0c71a6b3ae5e8a323ea4224438c0e524a5f7bd0b5dadb098f89dc49ce216c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads