wannacry | 56642eea5aba32106c2a63a6ecdf08c694cbd6840417e7d6ad8b9b828499a576

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
15-06-2024 07:12

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General

Target

ad45992cb43e2046e375822501519b5a_JaffaCakes118.dll
Size

5.0MB
MD5

ad45992cb43e2046e375822501519b5a
SHA1

bcb0e897c806cdc8c150bc3e0d861d8409fbcdad
SHA256

56642eea5aba32106c2a63a6ecdf08c694cbd6840417e7d6ad8b9b828499a576
SHA512

6b6d6122851c1a8c45aa69ae649e0653b26a46d9a68089db1555ff6a52b7229e175bfd52b56adfaaf1915c0a9590cdfca40239ffc5924ccb72039f38e6f0e97f
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAVR8yAH1plAH:+DqPoBhz1aRxcSUDk36SA0R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2671) 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

1332 mssecsvc.exe
3496 mssecsvc.exe
5012 tasksche.exe
Drops file in Windows directory 2 IoCs

Processes:

mssecsvc.exerundll32.exe

description ioc process

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

pid	process
1332	mssecsvc.exe
3496	mssecsvc.exe
5012	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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 1172 wrote to memory of 1796	1172	rundll32.exe	rundll32.exe
PID 1172 wrote to memory of 1796	1172	rundll32.exe	rundll32.exe
PID 1172 wrote to memory of 1796	1172	rundll32.exe	rundll32.exe
PID 1796 wrote to memory of 1332	1796	rundll32.exe	mssecsvc.exe
PID 1796 wrote to memory of 1332	1796	rundll32.exe	mssecsvc.exe
PID 1796 wrote to memory of 1332	1796	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ad45992cb43e2046e375822501519b5a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1172

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ad45992cb43e2046e375822501519b5a_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1796

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1332

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:5012

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3496

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

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
b7de0e3d563ed16a13549c10904db556

SHA1
3e07aa72f32f1f4e57c1350f47cad8aba7472d6f

SHA256
1fb6c222ec5f4c80fafb22deec5046d9341ec5757d8d253376a21af0c03f2a92

SHA512
1130d04e763726b3e6a723f07720d4ac4c087cd9911d914d9dd14772d8ff8b25008dd5ea742763fa45fecfaae2cd38da5ff397f0e75c2043a33a4af48c674794

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
34254469a1eeea38c6afd1a98bec0495

SHA1
946e0608b9804cd0aad52c5ee2f71a9aae358967

SHA256
c2371619ab716c65d3f05f82b85b144dbf1f4928cc1ed23963423c6267bd034a

SHA512
5498b8f645c2ee922a50d5c229826d26af4ef8c4d39ed9675fa903e66609e0413ccd2d1a3b36eeb8fb886bd7de56e2172377d62a3de9ffde373b2d5a38fc4cf8

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