wannacry | 6c3a04f3cd9ad73bd113b6436d10f0b8aae1ad9c4dfc1d432131c2295f1c74c4

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-05-2024 07:06

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

7c1d428d81c25f0d3b20b1fa594c93f7_JaffaCakes118.dll
Size

5.0MB
MD5

7c1d428d81c25f0d3b20b1fa594c93f7
SHA1

9b94bfaca93b0def8b476dd2e71f3b5cb6712986
SHA256

6c3a04f3cd9ad73bd113b6436d10f0b8aae1ad9c4dfc1d432131c2295f1c74c4
SHA512

c74eb1e8b141a776ca1d921bf7e570d4f41e3d8b9f772f3787dd1097bdd743a98e048164f3b3cee1f56f2df5500fda63e7df9f6fe11065b4d5060da7b27ae340
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv/ME:+DqPoBhz1aRxcSUDk36SAEdhvU

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2894) 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

3972 mssecsvc.exe
2496 mssecsvc.exe
3480 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
3972	mssecsvc.exe
2496	mssecsvc.exe
3480	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 4860 wrote to memory of 1384	4860	rundll32.exe	rundll32.exe
PID 4860 wrote to memory of 1384	4860	rundll32.exe	rundll32.exe
PID 4860 wrote to memory of 1384	4860	rundll32.exe	rundll32.exe
PID 1384 wrote to memory of 3972	1384	rundll32.exe	mssecsvc.exe
PID 1384 wrote to memory of 3972	1384	rundll32.exe	mssecsvc.exe
PID 1384 wrote to memory of 3972	1384	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7c1d428d81c25f0d3b20b1fa594c93f7_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4860

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7c1d428d81c25f0d3b20b1fa594c93f7_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1384

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3972

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3480

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2496

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1028 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:564

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
c450c928977812e6a52c2b50c215a3bd

SHA1
6995ed002e07926ddd92a25be37660a3f3021328

SHA256
454e397eb8bd87e7d4d26827b56a9b96412c6008cc03b7821cf1150d91e6c3aa

SHA512
a7171666547db8bd919e5a73a0edd0d02e8cc9ff3231fff987be89e30f254d9017ce75a21b7651731b1ddee060d21dc4361971ee18fca85d20e4d4353831ee48

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a86262b4801f9ffba4a632f5c2c74629

SHA1
e9329c38d9d5384e00c282ccb374814f92f849a3

SHA256
d82a7e20a277a2efcf387a573b64074c442edf8d72b6f473821c0a0343402d6f

SHA512
9edb51c8bca6dbeb8895414bff71687f371113833c3e9d9db2e9509561545a9fff85312a16ad4254ff9bbf7fd855b32f292fa368859121fb07a47a8de84041b5

Download Submit