wannacry | 9bb4defe23e0d9780f6109b2f762f59529d0dbee93ba1a82f7174883e7e7638e

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 08:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a8d8ae8af46f4ca16d70538fe9327158_JaffaCakes118.dll
Size

5.0MB
MD5

a8d8ae8af46f4ca16d70538fe9327158
SHA1

d936c731010229b3559937c79240729d0d8d871c
SHA256

9bb4defe23e0d9780f6109b2f762f59529d0dbee93ba1a82f7174883e7e7638e
SHA512

b2d3d9988648e5eb1e25f50abde320d51330ea4130b2469e4816e2893aa0f1eb444deedec98d1586e0a4d421652e6cac8c41c7fe5c41a39f48908ceda1a9a5ed
SSDEEP

98304:dDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:dDqPe1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2686) 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

2712 mssecsvc.exe
2124 mssecsvc.exe
1772 tasksche.exe
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
2712	mssecsvc.exe
2124	mssecsvc.exe
1772	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 4440 wrote to memory of 1328	4440	rundll32.exe	rundll32.exe
PID 4440 wrote to memory of 1328	4440	rundll32.exe	rundll32.exe
PID 4440 wrote to memory of 1328	4440	rundll32.exe	rundll32.exe
PID 1328 wrote to memory of 2712	1328	rundll32.exe	mssecsvc.exe
PID 1328 wrote to memory of 2712	1328	rundll32.exe	mssecsvc.exe
PID 1328 wrote to memory of 2712	1328	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a8d8ae8af46f4ca16d70538fe9327158_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4440

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a8d8ae8af46f4ca16d70538fe9327158_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1328

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2712

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1772

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2124

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
9326507318ea3ee1151e4fdfa06b2a7f

SHA1
f4c5ae7070f77e716e761d7ebd225b9b623f025c

SHA256
096c86979dd79f855903eedad8c54b8657d685e3a7d60abb5b11064c5d546156

SHA512
07747c6791b7ecf161fa07776f316b27a5aa843684ce32cd4afbc7a490689264236fbcf2dd9791a937aa972ff315a24ab13f46cbbc58932d717b9e8fdebfc0fb

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

Download Submit