wannacry | 74ba89c3a5853f53a39ef8dfdd2afcc476b930f2aef152d1ce2752e9225f803b

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 10:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

66eb63d06adbb6cc6b89d1e9002cecff_JaffaCakes118.dll
Size

5.0MB
MD5

66eb63d06adbb6cc6b89d1e9002cecff
SHA1

c96cb280b304bc42a197a2cd00504093adff0b89
SHA256

74ba89c3a5853f53a39ef8dfdd2afcc476b930f2aef152d1ce2752e9225f803b
SHA512

b86d7f336fea76da086099e4f89cd298b7bc84e93752daf2c23bade5f53c6773ff534ec3a655049c795c691fdcaf5017defd73172462822e7c11c9759fdde7d9
SSDEEP

49152:znAQqMSPbcBVQej/1nAMEcaEau3R8yAH1plAH:TDqPoBhz1n593R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3248) 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

4296 mssecsvc.exe
3276 mssecsvc.exe
3888 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
4296	mssecsvc.exe
3276	mssecsvc.exe
3888	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
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 464 wrote to memory of 3044	464	rundll32.exe	rundll32.exe
PID 464 wrote to memory of 3044	464	rundll32.exe	rundll32.exe
PID 464 wrote to memory of 3044	464	rundll32.exe	rundll32.exe
PID 3044 wrote to memory of 4296	3044	rundll32.exe	mssecsvc.exe
PID 3044 wrote to memory of 4296	3044	rundll32.exe	mssecsvc.exe
PID 3044 wrote to memory of 4296	3044	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\66eb63d06adbb6cc6b89d1e9002cecff_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:464

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\66eb63d06adbb6cc6b89d1e9002cecff_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3044

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4296

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3888

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3276

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
4d34f7d41477e33ba220565cda0f71a2

SHA1
13d4f0416538686c65196ba8adef1d7de21ba10a

SHA256
2b5554a30f65d6064bbf63ca18afdee574efb885d0c7e5f22bd6e805fbf01466

SHA512
19092b210b5f0dfa77a2c5f010bcfff9fed7caa74cd3dd140f294b1d04a3759f282611da136eb1a04f3fb9651b6cd869d54b7ccaab83ef1158109517e86c9484

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

MD5
629b889d481435fab3b4f7dd27cc9b5c

SHA1
d8f87fa272a5b4482f7628ec32e27234fbfb3446

SHA256
9bfa1377036b4df72a3e1389d39e030e497dd3bf6bc24e84199567733078e833

SHA512
8d6ccf70554a6d715170426014b3f09efb8078b4b84a548a04f3fdf3f493b4a88a6fc02e1aef7eb480c69693aca475d4f35fa7d1f63a213e0f13fceb2c656d3b

Download Submit