wannacry | 21d52f970117819dab150b9d71d64d2afb3794ca7c6de574321d27b1849b71b0

General

Target

21d52f970117819dab150b9d71d64d2afb3794ca7c6de574321d27b1849b71b0.dll
Size

5.0MB
MD5

ffe9ccaad1190c36b7df3b8bdcb45875
SHA1

1a7ed5614247c958d2b3f8da2411ddf5a85e16a9
SHA256

21d52f970117819dab150b9d71d64d2afb3794ca7c6de574321d27b1849b71b0
SHA512

0a16711d9a1a78341b32ae31f768cb2afadcd4d61878fa48d23572efae7d6c99066c17154290d82cdd8916a3fa4e756c7be887f5f6c58be0c63fd112cae965db

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2864) 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 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid process

1592 mssecsvc.exe
2716 mssecsvc.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
1592	mssecsvc.exe
2716	mssecsvc.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 1868 wrote to memory of 2488	1868	rundll32.exe	rundll32.exe
PID 1868 wrote to memory of 2488	1868	rundll32.exe	rundll32.exe
PID 1868 wrote to memory of 2488	1868	rundll32.exe	rundll32.exe
PID 2488 wrote to memory of 1592	2488	rundll32.exe	mssecsvc.exe
PID 2488 wrote to memory of 1592	2488	rundll32.exe	mssecsvc.exe
PID 2488 wrote to memory of 1592	2488	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\21d52f970117819dab150b9d71d64d2afb3794ca7c6de574321d27b1849b71b0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1868

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\21d52f970117819dab150b9d71d64d2afb3794ca7c6de574321d27b1849b71b0.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2488

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1592

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2716

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
5ad188090c5943dd1aa50ecbaadcb1e9

SHA1
88bce55d3d47e2b045174d49a960c32e9774f326

SHA256
3b4bfdd3adca02cc079e1cd7c2388792777e5d0880cf4aeaecc3f206ccad9693

SHA512
d36660fea21d9c2b6a0f42559dc3a94d9468cd28890ac11044e21add55e3a82b0c046cefa7680c1807fc60b629b766536d4015e98c9cea2ac47a2150106b215f

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
5ad188090c5943dd1aa50ecbaadcb1e9

SHA1
88bce55d3d47e2b045174d49a960c32e9774f326

SHA256
3b4bfdd3adca02cc079e1cd7c2388792777e5d0880cf4aeaecc3f206ccad9693

SHA512
d36660fea21d9c2b6a0f42559dc3a94d9468cd28890ac11044e21add55e3a82b0c046cefa7680c1807fc60b629b766536d4015e98c9cea2ac47a2150106b215f

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
5ad188090c5943dd1aa50ecbaadcb1e9

SHA1
88bce55d3d47e2b045174d49a960c32e9774f326

SHA256
3b4bfdd3adca02cc079e1cd7c2388792777e5d0880cf4aeaecc3f206ccad9693

SHA512
d36660fea21d9c2b6a0f42559dc3a94d9468cd28890ac11044e21add55e3a82b0c046cefa7680c1807fc60b629b766536d4015e98c9cea2ac47a2150106b215f

Download Submit
memory/1592-131-0x0000000000000000-mapping.dmp

Download
memory/2488-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing