wannacry | 0fcd53a40125addbfa3bf3f66379fa5b0bee5019c4680940e04fdb8714202059

Analysis

max time kernel
150s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28-05-2024 22:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

7e98a145a032013ca69b2cbf30cf5f84_JaffaCakes118.dll
Size

5.0MB
MD5

7e98a145a032013ca69b2cbf30cf5f84
SHA1

c955b774132b69cd7f38033827b4f9cb98666898
SHA256

0fcd53a40125addbfa3bf3f66379fa5b0bee5019c4680940e04fdb8714202059
SHA512

973a057545bc3d2caca6ace592e39aeda04a4184fac3bd1c00f385a64301f6b2e95a376cdf39c4bcf9d15348c993d856914699a1e087dfd6708bc60de7e191c1
SSDEEP

98304:TDqPoBi1aRxcSUDk36SAr593R8yAVp2H:TDqPZ1Cxcxk3ZArzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3295) 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

760 mssecsvc.exe
4048 mssecsvc.exe
2668 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
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
760	mssecsvc.exe
4048	mssecsvc.exe
2668	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 4996 wrote to memory of 5044	4996	rundll32.exe	rundll32.exe
PID 4996 wrote to memory of 5044	4996	rundll32.exe	rundll32.exe
PID 4996 wrote to memory of 5044	4996	rundll32.exe	rundll32.exe
PID 5044 wrote to memory of 760	5044	rundll32.exe	mssecsvc.exe
PID 5044 wrote to memory of 760	5044	rundll32.exe	mssecsvc.exe
PID 5044 wrote to memory of 760	5044	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e98a145a032013ca69b2cbf30cf5f84_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4996

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e98a145a032013ca69b2cbf30cf5f84_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:5044

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:760

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2668

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4048

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
73f711dce0872d39ac4e7db8b9ca619c

SHA1
1ae464308025a7d376e4a20165eb02c2cae39c83

SHA256
f175fabaf90c262721a9882019b84fc9aa3f8bfee67fb176bf8448b76b9e1522

SHA512
1a51b4de8f3fcac1ad4d9b8816d448dbc971545d89658817bc7eabe6b9a362ebd570124894cadf570b2fe99caa2f2d75ac91c231e76a6693ba3c4963246bf4ea

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
fdee266283e705423f807589fb25dddc

SHA1
d5c05e0286323fedbe8b0e4b5043dccf7450dc80

SHA256
84395daa0e949e60a22310b591effbbb5787fe69428513445fa395726ab0f61c

SHA512
487a3f4bcfd4e77cf449e54581bbe06a457380a8ee818b8d20ccaa7359e254d00932bf4a2c6dac2c06745f7eebbf58ec4360c1af5a2fac769f84a6f4b273117a

Download Submit