wannacry | 8f50c9a8ed4e63f6efe327521dc6c54aa3fa592796583828c7959bbde543adcd

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-06-2024 00:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

9c7b42a8055f57c835315d89ad1f3482_JaffaCakes118.dll
Size

5.0MB
MD5

9c7b42a8055f57c835315d89ad1f3482
SHA1

308fe16d1573ee8fa641c2e20023487ca25f9cbf
SHA256

8f50c9a8ed4e63f6efe327521dc6c54aa3fa592796583828c7959bbde543adcd
SHA512

9fcb35e19bcc42afc51ee728828bbb7735b480ddc5886a0e2151b7bb0d8a0564b451a6bc7f06b9cb35b818df9ea8723e68649e775212150f75a0c47c21d74940
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P5F:TDqPe1Cxcxk3ZAEUadn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2692) 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

3480 mssecsvc.exe
2288 mssecsvc.exe
1776 tasksche.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

pid	process
3480	mssecsvc.exe
2288	mssecsvc.exe
1776	tasksche.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 5 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\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1240 wrote to memory of 1712	1240	rundll32.exe	rundll32.exe
PID 1240 wrote to memory of 1712	1240	rundll32.exe	rundll32.exe
PID 1240 wrote to memory of 1712	1240	rundll32.exe	rundll32.exe
PID 1712 wrote to memory of 3480	1712	rundll32.exe	mssecsvc.exe
PID 1712 wrote to memory of 3480	1712	rundll32.exe	mssecsvc.exe
PID 1712 wrote to memory of 3480	1712	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9c7b42a8055f57c835315d89ad1f3482_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9c7b42a8055f57c835315d89ad1f3482_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1712

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3480

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1776

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
19178968d9f227757a9d3cca17245d8a

SHA1
71d681e9158335e0826941cac3201434e4f7c3f9

SHA256
8d896776f9a97a90e49efc257f23933e4220f5204b8dfd1d90b2d5dc3cd1dab4

SHA512
92be8cd012f7f5b3f0b0cc75b5a8cccb09f00619faa4eaae6aae468214e4b1746a162e1469691fd07ab0de7a6f44f9dbcb9f956ee2d749b81d6aee7f94b2982c

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
fa0b1bf06c539a26ec853463af7301a8

SHA1
6c413ff5032a37fb67c921a163493b0825f3ddc5

SHA256
57bb0bbecc49c614f1d51354b7fdc7344af9315b150e81e2add578c1990977fc

SHA512
250539c9855d82cc783db3db43c4ccefc634632e29e56438bbd1556585304fd0f3b860810643323c670c4315e0d123de582299ce88bb1d1533f6105e3efcd278

Download Submit