wannacry | 92bc02116a72b13d359ba88e0984ea09d2eb230fbf711d92a0c961e08274a09e

Resubmissions

25-03-2024 16:24

240325-twmx2sfe7x 10

25-03-2024 16:11

240325-tnb6ksce86 10

Analysis

max time kernel
120s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25-03-2024 16:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ce223b231f2862124386c585e9b95ca1.dll
Size

5.0MB
MD5

ce223b231f2862124386c585e9b95ca1
SHA1

61673e2be7e3479a818eb98339692bc7e4a5b79c
SHA256

92bc02116a72b13d359ba88e0984ea09d2eb230fbf711d92a0c961e08274a09e
SHA512

dede42923cae7167fcff56ae1131e6cb5a9c8ef14d76d1be84211504685d628fa1abf658a7ec89d0bca976c35ef6eb58f93e4f59ffcc4c27468e3e44c0ac4faa
SSDEEP

12288:TQbLgmluyQhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+DHeQYSUjEXF5:MbLguVQhfdmMSirYbcMNgef0QeQjG

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2513) 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 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

1236 mssecsvr.exe
3960 mssecsvr.exe
Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

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

pid	process
1236	mssecsvr.exe
3960	mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvr.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe

Modifies registry class 1 IoCs

Processes:

OpenWith.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000_Classes\Local Settings OpenWith.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

4260 NOTEPAD.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

OpenWith.exe

pid process

4820 OpenWith.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000_Classes\Local Settings	OpenWith.exe

pid	process
4260	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 25 IoCs

Processes:

OpenWith.exe

pid	process
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe
4820	OpenWith.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exeOpenWith.exe

description	pid	process	target process
PID 1364 wrote to memory of 4016	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 4016	1364	rundll32.exe	rundll32.exe
PID 1364 wrote to memory of 4016	1364	rundll32.exe	rundll32.exe
PID 4016 wrote to memory of 1236	4016	rundll32.exe	mssecsvr.exe
PID 4016 wrote to memory of 1236	4016	rundll32.exe	mssecsvr.exe
PID 4016 wrote to memory of 1236	4016	rundll32.exe	mssecsvr.exe
PID 4820 wrote to memory of 4260	4820	OpenWith.exe	NOTEPAD.EXE
PID 4820 wrote to memory of 4260	4820	OpenWith.exe	NOTEPAD.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ce223b231f2862124386c585e9b95ca1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1364

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ce223b231f2862124386c585e9b95ca1.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4016

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1236

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3960

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4672

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4820

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Windows\system32\taskschd.msc
2⤵
- Opens file in notepad (likely ransom note)
PID:4260

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\mssecsvr.exe

Filesize
2.2MB

MD5
60a91a498c0f1ffddef484c5a4d42564

SHA1
a15dcd408c0aee1f5f38b50528583bdee6536227

SHA256
03dc66c9970481c5958d247f9eba93a6a7ad9f9bbf94845b9fbea8ed1e1e0757

SHA512
e7b7a308227fc3c72d8d1bd262389257e1f2fa419f6ceff58f73a06f850245f6e1068ea74cf42388ee2ca2712d7b5d9a2ce0e6f7264c3885b82c1caa70891e55

Download Submit