wannacry | c0cced0362a874cb846f09d78c176da8312b2f86f1187c321a08b6736b68f156

General

Target

b1d879e25fa026cd0b3862adcd964992_JaffaCakes118.dll
Size

5.0MB
MD5

b1d879e25fa026cd0b3862adcd964992
SHA1

a80c5fc70b88793bb3c4bb94d8645db478e26d23
SHA256

c0cced0362a874cb846f09d78c176da8312b2f86f1187c321a08b6736b68f156
SHA512

81858081624f42caa35f36ce2308cc509840fbde82fec8e43fd8525e025660094989e99fb73e2f6ed74ee198f1cc967400eed4e95c64682ba85566a3ce0ddeeb
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0KMEcaEau3:+DqPoBhz1aRxcSUDk36SAEdhvxW+93

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2670) 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

1964 mssecsvc.exe
2640 mssecsvc.exe
2676 tasksche.exe

pid	process
1964	mssecsvc.exe
2640	mssecsvc.exe
2676	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0026000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-27-2d-32-ba-d3\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-27-2d-32-ba-d3\WpadDecisionTime = e02995abaabfda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-27-2d-32-ba-d3\WpadDecision = "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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F38CB632-1FA1-4A4D-ABFF-D12F6707007A}\WpadDecisionReason = "1"	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
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 (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\{F38CB632-1FA1-4A4D-ABFF-D12F6707007A}\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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F38CB632-1FA1-4A4D-ABFF-D12F6707007A}\8e-27-2d-32-ba-d3	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F38CB632-1FA1-4A4D-ABFF-D12F6707007A}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-27-2d-32-ba-d3	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\{F38CB632-1FA1-4A4D-ABFF-D12F6707007A}	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F38CB632-1FA1-4A4D-ABFF-D12F6707007A}\WpadDecisionTime = e02995abaabfda01	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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2936 wrote to memory of 2992	2936	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 1964	2992	rundll32.exe	mssecsvc.exe
PID 2992 wrote to memory of 1964	2992	rundll32.exe	mssecsvc.exe
PID 2992 wrote to memory of 1964	2992	rundll32.exe	mssecsvc.exe
PID 2992 wrote to memory of 1964	2992	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1d879e25fa026cd0b3862adcd964992_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2936

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1d879e25fa026cd0b3862adcd964992_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2992

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1964

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2676

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:2640

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
39d7b40d6386026039778cff5a623a8e

SHA1
57bbeb96100ece190d20735b10f94f28c859458f

SHA256
6706c12bc92fe64f0146028e238e79dc97bdfcb3c6c7031e87dd944e117b5e7b

SHA512
5e6fed967149e772cebe0397876386a8a5fd3feb699c999a5445b2b837db992d7c61ecd64e9e9103120e188169aff96bc72f60ee23ac6223a4f099f4efc33f89

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9b7c450aa958b5ff1cbb7a27574eb458

SHA1
34bc44a0102bf19c5073d55b439374df1c8ce154

SHA256
b3dedf8e93459003ce839f6132cda2decfd7a9d746c33e4f3c3f8186a3d303ee

SHA512
e4a5927ff803c70908def54067c28fa7ac42318a800f3b8839b30d7118e971b439a77783087e64d51a575b849bb417134cb1b4d35de90b34e86ad767985ed1b1

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads