wannacry | 0593c6b23a9e41f7f6dda4b603bfe6109aa0ce0d26ef015edff95497d41947a1

Analysis

max time kernel
154s
max time network
157s
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 03:18

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General

Target

9a0007dc87e330fa8ac51b67735f90c4.dll
Size

5.0MB
MD5

9a0007dc87e330fa8ac51b67735f90c4
SHA1

d66a867d4b5c045c2248abfb61a0c70da7dd71d7
SHA256

0593c6b23a9e41f7f6dda4b603bfe6109aa0ce0d26ef015edff95497d41947a1
SHA512

e3bbda2afb2fff367bc5daa70712a0138d0e62aa2130bb246d4e46e8f9be1fae1adac5f89a54ba6369b69042ae88eb7a96ca4ad17e9b3d83ed63d10ef97a9c31

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2932) 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

2776 mssecsvc.exe
2640 mssecsvc.exe
3504 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
2776	mssecsvc.exe
2640	mssecsvc.exe
3504	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 1800 wrote to memory of 1384	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1384	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1384	1800	rundll32.exe	rundll32.exe
PID 1384 wrote to memory of 2776	1384	rundll32.exe	mssecsvc.exe
PID 1384 wrote to memory of 2776	1384	rundll32.exe	mssecsvc.exe
PID 1384 wrote to memory of 2776	1384	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a0007dc87e330fa8ac51b67735f90c4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9a0007dc87e330fa8ac51b67735f90c4.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1384

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2776

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3504

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2640

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
34f0ba461f5fbfac35bc0d28bc065c3a

SHA1
6dcaa535d2d7b80856e7d42f9e5a5bb23b9bbdf0

SHA256
2dc592fd09d6454188e28caaf13d0dcd61a56eb34a14bfde4afe34d22c65929d

SHA512
e57e26c363932ab58a4f78160d1b354883b856080f3783666e673060df21c52bd6b653283c393e7c5869183ada2afbef5f4db5caaa9ca4dcad8287f71d40f837

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
34f0ba461f5fbfac35bc0d28bc065c3a

SHA1
6dcaa535d2d7b80856e7d42f9e5a5bb23b9bbdf0

SHA256
2dc592fd09d6454188e28caaf13d0dcd61a56eb34a14bfde4afe34d22c65929d

SHA512
e57e26c363932ab58a4f78160d1b354883b856080f3783666e673060df21c52bd6b653283c393e7c5869183ada2afbef5f4db5caaa9ca4dcad8287f71d40f837

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
34f0ba461f5fbfac35bc0d28bc065c3a

SHA1
6dcaa535d2d7b80856e7d42f9e5a5bb23b9bbdf0

SHA256
2dc592fd09d6454188e28caaf13d0dcd61a56eb34a14bfde4afe34d22c65929d

SHA512
e57e26c363932ab58a4f78160d1b354883b856080f3783666e673060df21c52bd6b653283c393e7c5869183ada2afbef5f4db5caaa9ca4dcad8287f71d40f837

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

Download Submit
memory/1384-130-0x0000000000000000-mapping.dmp

Download
memory/2640-136-0x0000000000400000-0x0000000000A70000-memory.dmp

Filesize
6.4MB

Download
memory/2640-139-0x0000000000400000-0x0000000000A70000-memory.dmp

Filesize
6.4MB

Download
memory/2776-131-0x0000000000000000-mapping.dmp

Download
memory/2776-134-0x0000000000400000-0x0000000000A70000-memory.dmp

Filesize
6.4MB

Download
memory/2776-138-0x0000000000400000-0x0000000000A70000-memory.dmp

Filesize
6.4MB

Download