wannacry | dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359

General

Target

dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll
Size

5.0MB
MD5

9572e7085f1cc985e86ee018899e81e5
SHA1

bba275ac45b152fd7be85d28f4114d59ef1bf6ea
SHA256

dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359
SHA512

6729357bcb91922ff800701490a8a56374306d44e0cf7ae6fcad0ef9c6a5bf8747927ad5f7ce899846d575b175185c32d9a37712b13678ec2a80c4c50223e810

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1213) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

2504 mssecsvr.exe
4172 mssecsvr.exe
Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

pid	process
2504	mssecsvr.exe
4172	mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3364 wrote to memory of 2516	3364	rundll32.exe	rundll32.exe
PID 3364 wrote to memory of 2516	3364	rundll32.exe	rundll32.exe
PID 3364 wrote to memory of 2516	3364	rundll32.exe	rundll32.exe
PID 2516 wrote to memory of 2504	2516	rundll32.exe	mssecsvr.exe
PID 2516 wrote to memory of 2504	2516	rundll32.exe	mssecsvr.exe
PID 2516 wrote to memory of 2504	2516	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3364

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dffe59edba01f48eeb62145a74384b3eda61de4aff4d4536235e40976d4eb359.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2516

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2504

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4172

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
8fcfd6e2a225c65bc72beff47b0d9248

SHA1
cca810ab571c4ce407b33def409038570dad1bf2

SHA256
74e45b32c2bb7e664bc496cea9608636da7d40e814ea49ad4712f833819e534f

SHA512
2b8b514a9b6bc09782d43e9b4e8d8dcf4137403d71d8ee703fa4c8e90f8717b25ee094f49cb70554dbe5c04acc04c545165aeea7f4ca4755988114e02499e39e

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
8fcfd6e2a225c65bc72beff47b0d9248

SHA1
cca810ab571c4ce407b33def409038570dad1bf2

SHA256
74e45b32c2bb7e664bc496cea9608636da7d40e814ea49ad4712f833819e534f

SHA512
2b8b514a9b6bc09782d43e9b4e8d8dcf4137403d71d8ee703fa4c8e90f8717b25ee094f49cb70554dbe5c04acc04c545165aeea7f4ca4755988114e02499e39e

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
8fcfd6e2a225c65bc72beff47b0d9248

SHA1
cca810ab571c4ce407b33def409038570dad1bf2

SHA256
74e45b32c2bb7e664bc496cea9608636da7d40e814ea49ad4712f833819e534f

SHA512
2b8b514a9b6bc09782d43e9b4e8d8dcf4137403d71d8ee703fa4c8e90f8717b25ee094f49cb70554dbe5c04acc04c545165aeea7f4ca4755988114e02499e39e

Download Submit
memory/2504-131-0x0000000000000000-mapping.dmp

Download
memory/2516-130-0x0000000000000000-mapping.dmp

Download

Analysis

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