wannacry | d3c9acac4d4adfd13475a49a89a81fb5ba6497b5ac61d4317fcc3bd4cbd92f37

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
14-06-2024 01:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a774c7e970b2c25f3d7aef04ae70d88c_JaffaCakes118.dll
Size

5.0MB
MD5

a774c7e970b2c25f3d7aef04ae70d88c
SHA1

a8477d2f8c3cb66664c9fd8f7752fdfe9071f5af
SHA256

d3c9acac4d4adfd13475a49a89a81fb5ba6497b5ac61d4317fcc3bd4cbd92f37
SHA512

290cb300cb6d52761a2fd1b2ebb0aa871466464592a469752e2efa2175335219fbd058c92b288c6bdf5a08f52094f53a7ee0c6de4040ecb962202f981fcc612f
SSDEEP

98304:+DqPoBhz1aRxOk36SAEdhvxWa9P593R8yf:+DqPe1CxOk3ZAEUadzR86

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2687) 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

4044 mssecsvc.exe
1620 mssecsvc.exe
1880 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
4044	mssecsvc.exe
1620	mssecsvc.exe
1880	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\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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2368 wrote to memory of 1268	2368	rundll32.exe	rundll32.exe
PID 2368 wrote to memory of 1268	2368	rundll32.exe	rundll32.exe
PID 2368 wrote to memory of 1268	2368	rundll32.exe	rundll32.exe
PID 1268 wrote to memory of 4044	1268	rundll32.exe	mssecsvc.exe
PID 1268 wrote to memory of 4044	1268	rundll32.exe	mssecsvc.exe
PID 1268 wrote to memory of 4044	1268	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a774c7e970b2c25f3d7aef04ae70d88c_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2368

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a774c7e970b2c25f3d7aef04ae70d88c_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1268

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4044

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1880

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1620

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
31bde1b99268b625c812b14e0485a712

SHA1
a684c84b711f004b82a7b109eff9a8b7f2d8cc8c

SHA256
82b91702df30926c292961ad561642f8fca5708100b04e80fd5f5dbc4adb64ab

SHA512
1a21e8a5ec1e792f73fc8965fc108ac06eec5d3703661478a35a3c2df06ef38d9182f9968724247ec2c4c3f466f53fffa2fd67ec03505417c0307ab8e6321b7c

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9a98585a1a7731c399ab8b69d689cc38

SHA1
4f381aebb919ad89455f1023be6331534a8f7a9a

SHA256
dd39f84b3fb064c1f4e795ed3c0c617e0cd598b10508c5ea3f9d4ff4ea88eb71

SHA512
6bdc6c410d2dc667a63bc749b4a83104a847cc7b1c84fc6dc5c27fa72132ab880e941d74552984b0698e80178d65a5c92588b3f93e3ad62392f821af10b99bca

Download Submit