wannacry | 1ec3e2414cfbfde6262c4860516eca5411a10992381d531750c7a1856c8714f5

General

Target

67e4c40e171d9de8ee90763ad3b1ea96_JaffaCakes118.dll
Size

5.0MB
MD5

67e4c40e171d9de8ee90763ad3b1ea96
SHA1

758467d777fd49fbcdbd1a252221f23b7ad7004f
SHA256

1ec3e2414cfbfde6262c4860516eca5411a10992381d531750c7a1856c8714f5
SHA512

fcb3f222f75012e823f9cfe07243c245091be8fa8ac21eec50af9e55e24f162a6b99ed4b4cf5993a842e25067a6c9c399c5c8c21e27c2aba5dce1391820477bf
SSDEEP

49152:SnAQqMSPbcBVI/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:+DqPoBC1aRxcSUDk36SAEdhvxWa9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3324) 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

3024 mssecsvc.exe
2916 mssecsvc.exe
2596 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
3024	mssecsvc.exe
2916	mssecsvc.exe
2596	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\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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C3FF418-ACF9-4D11-B32C-198C44705BF7}\WpadDecisionTime = 0031879c0addda01	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
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\{4C3FF418-ACF9-4D11-B32C-198C44705BF7}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C3FF418-ACF9-4D11-B32C-198C44705BF7}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-bd-69-fe-4b-53	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-bd-69-fe-4b-53\WpadDecisionReason = "1"	mssecsvc.exe
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\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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C3FF418-ACF9-4D11-B32C-198C44705BF7}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C3FF418-ACF9-4D11-B32C-198C44705BF7}\WpadDecision = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-bd-69-fe-4b-53\WpadDecisionTime = 0031879c0addda01	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4C3FF418-ACF9-4D11-B32C-198C44705BF7}\46-bd-69-fe-4b-53	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\46-bd-69-fe-4b-53\WpadDecision = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2880 wrote to memory of 2940	2880	rundll32.exe	rundll32.exe
PID 2940 wrote to memory of 3024	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 3024	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 3024	2940	rundll32.exe	mssecsvc.exe
PID 2940 wrote to memory of 3024	2940	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\67e4c40e171d9de8ee90763ad3b1ea96_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2880

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\67e4c40e171d9de8ee90763ad3b1ea96_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2940

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3024

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2596

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:2916

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
3ec64b8581cdcc2c04c507a024c1420b

SHA1
e8b5acd08cf06bb70d6ad3c83d883f7b2dfb2b4d

SHA256
faa9d3ffecd9b6a0a44e9505b6ae04cb322128fd32842fedc400e3875513369c

SHA512
533a97dfc1eab5c88e25f18e3a2c4b793de84adefcaefea9323d12ed0c690c5967890eca2d6968341c26323d2cfa3d517fe68cf84e9136934e6ace14109f17e9

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
bf99a876e20591c313195e392c508221

SHA1
9b77767175ea56123b3cdc5b1e83a984476542ab

SHA256
436b4dce2c9839a0cdcf28b175d2b46598ce548dc080987487f62e50fa83dcb2

SHA512
aece9efbbfe3741cd44cceb0318e0b332015fb98f96a7775a9ca72e6295624bc52fd14652a76bb139f382374f6edf09f8227be96ff8a89fd22197fa3cb0ae143

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads