wannacry | 36dc0aae52946e3f9530c53925301bb8dbfa8216291705d99ef913d55f6ec1c9

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 00:15

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General

Target

ad84accbc8a5107e950afac47e171157.dll
Size

5.0MB
MD5

ad84accbc8a5107e950afac47e171157
SHA1

e8f49ebc884bdab46ae1984145a1f680efd2c4e2
SHA256

36dc0aae52946e3f9530c53925301bb8dbfa8216291705d99ef913d55f6ec1c9
SHA512

88f0edb164c7164a8b5377b4e079ab4adc49d00a8b1f9a1424a5a0838ee4dc23ca37b9e72b4cae801d3b7663229274bfeb93d95d5118869b2fbcef72fe257482

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3060) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1864 mssecsvc.exe
3392 mssecsvc.exe
4568 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 Scanning
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
1864	mssecsvc.exe
3392	mssecsvc.exe
4568	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 3060 wrote to memory of 1732	3060	rundll32.exe	rundll32.exe
PID 3060 wrote to memory of 1732	3060	rundll32.exe	rundll32.exe
PID 3060 wrote to memory of 1732	3060	rundll32.exe	rundll32.exe
PID 1732 wrote to memory of 1864	1732	rundll32.exe	mssecsvc.exe
PID 1732 wrote to memory of 1864	1732	rundll32.exe	mssecsvc.exe
PID 1732 wrote to memory of 1864	1732	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ad84accbc8a5107e950afac47e171157.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3060

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ad84accbc8a5107e950afac47e171157.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1732

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1864

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4568

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3392

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
e26d6e03d069f978ed0f0496b29f20ec

SHA1
08af161b24769aa76cfdf47d5b1ff450a00da34a

SHA256
c229bc5acb17f06a2e7fa20f2843d47266e29b41333ea6e2fbcadec414eec6e8

SHA512
31cf304e8306856842b91df5c4ee4865262b0067db58e1fadf04dd08f48dd9a32d6c358a371011cb9a1db13c4e3ca96316acc893b73450bf183ba753843be03c

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
e26d6e03d069f978ed0f0496b29f20ec

SHA1
08af161b24769aa76cfdf47d5b1ff450a00da34a

SHA256
c229bc5acb17f06a2e7fa20f2843d47266e29b41333ea6e2fbcadec414eec6e8

SHA512
31cf304e8306856842b91df5c4ee4865262b0067db58e1fadf04dd08f48dd9a32d6c358a371011cb9a1db13c4e3ca96316acc893b73450bf183ba753843be03c

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
e26d6e03d069f978ed0f0496b29f20ec

SHA1
08af161b24769aa76cfdf47d5b1ff450a00da34a

SHA256
c229bc5acb17f06a2e7fa20f2843d47266e29b41333ea6e2fbcadec414eec6e8

SHA512
31cf304e8306856842b91df5c4ee4865262b0067db58e1fadf04dd08f48dd9a32d6c358a371011cb9a1db13c4e3ca96316acc893b73450bf183ba753843be03c

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

MD5
4092e892c5561b86a96dbcdad7f5b7e9

SHA1
31c342e36ee94801e7437fc23accbf08a2812297

SHA256
a055ef139ccc99822e7b331218319cb205801d21b20484c1e7d200b6df40c2ef

SHA512
e8d5ffbdd445e1aab3df3cfb75c96cc7929e3780e2406a403d871c89a75ffe85325e3ce853d23e881638234c75e25a3d8c5761caa8b41aa869121f7af914af5f

Download Submit
memory/1732-130-0x0000000000000000-mapping.dmp

Download
memory/1864-131-0x0000000000000000-mapping.dmp

Download