wannacry | 0ca55fe01cf52696f424100ee6de4e8dd262ce1c83257d22bc3edc42c30fb944

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 01:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

769ec37bc4de51581ea222ef38d4f752.dll
Size

5.0MB
MD5

769ec37bc4de51581ea222ef38d4f752
SHA1

3db70422149469e299bf15a45bf4c6bc97a7031c
SHA256

0ca55fe01cf52696f424100ee6de4e8dd262ce1c83257d22bc3edc42c30fb944
SHA512

695c79e1e0bef5395f78928b4275d927d0c3570554f976743235ca93299bc615a5a6408cfc68b19ad9ff6b8330bfef0f21221d048c2d210392796b267a022a24

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3280) 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

3576 mssecsvc.exe
4488 mssecsvc.exe
4564 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
3576	mssecsvc.exe
4488	mssecsvc.exe
4564	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 5104 wrote to memory of 1748	5104	rundll32.exe	rundll32.exe
PID 5104 wrote to memory of 1748	5104	rundll32.exe	rundll32.exe
PID 5104 wrote to memory of 1748	5104	rundll32.exe	rundll32.exe
PID 1748 wrote to memory of 3576	1748	rundll32.exe	mssecsvc.exe
PID 1748 wrote to memory of 3576	1748	rundll32.exe	mssecsvc.exe
PID 1748 wrote to memory of 3576	1748	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\769ec37bc4de51581ea222ef38d4f752.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5104

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\769ec37bc4de51581ea222ef38d4f752.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1748

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3576

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4564

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4488

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

Loading Replay Monitor...

Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
938c72f8e4f17aacd8399294eef5ccb6

SHA1
2598c7b3f197f50abb4a337facedcce7cde40e31

SHA256
909994ae47c3512b079e50e2959afe3ffe36f698b5a8f7e82aee8b4fcf5474cc

SHA512
5cb83912c5780bfdb30b16cdbdb0fbe35c5ebac3db959d51a1040431aeb5c04d9866116b3b29f8422f37e98283a98b3a9969cef3828ff992f66451c62cac78db

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

MD5
938c72f8e4f17aacd8399294eef5ccb6

SHA1
2598c7b3f197f50abb4a337facedcce7cde40e31

SHA256
909994ae47c3512b079e50e2959afe3ffe36f698b5a8f7e82aee8b4fcf5474cc

SHA512
5cb83912c5780bfdb30b16cdbdb0fbe35c5ebac3db959d51a1040431aeb5c04d9866116b3b29f8422f37e98283a98b3a9969cef3828ff992f66451c62cac78db

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

MD5
938c72f8e4f17aacd8399294eef5ccb6

SHA1
2598c7b3f197f50abb4a337facedcce7cde40e31

SHA256
909994ae47c3512b079e50e2959afe3ffe36f698b5a8f7e82aee8b4fcf5474cc

SHA512
5cb83912c5780bfdb30b16cdbdb0fbe35c5ebac3db959d51a1040431aeb5c04d9866116b3b29f8422f37e98283a98b3a9969cef3828ff992f66451c62cac78db

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

MD5
94ed322315708f5a79d5ecbd0171f94e

SHA1
af6138631fa0692742171530af205d07fbca3e78

SHA256
de9af8502448d1b9f2fec43def7cda8b72f7b03571a162237850715e12ea97c2

SHA512
c0746b2633eccabc46350d6e336bc25c755d1e478bc0154de8f1decc9cb028eb6a286351ec17668d267818a8fb1959c3d16d875e42f54daeeabde88e9a4382e3

Download Submit
memory/1748-131-0x0000000000000000-mapping.dmp

Download
memory/3576-132-0x0000000000000000-mapping.dmp

Download