wannacry | 4196a9d55800bb361a18d3a5c72ffc3b12054c956c03dfff7f5ad34205459958

General

Target

4196a9d55800bb361a18d3a5c72ffc3b12054c956c03dfff7f5ad34205459958.dll
Size

5.0MB
MD5

11416ba28eb8e03657d4d228e1ed8afc
SHA1

daa51750ff5aa847f06cf16f74d348d921fada62
SHA256

4196a9d55800bb361a18d3a5c72ffc3b12054c956c03dfff7f5ad34205459958
SHA512

4686f56b028218593ca85ea2ea10eeef05f82817a8ba8541f58466e55fc62428fe4ad5b154f048d86960e65e1ce59c59a0d129388ef213fda1713cca6a48d20b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2618) 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:

mssecsvr.exemssecsvr.exe

pid process

3068 mssecsvr.exe
3056 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
3068	mssecsvr.exe
3056	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2996 wrote to memory of 4224	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 4224	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 4224	2996	rundll32.exe	rundll32.exe
PID 4224 wrote to memory of 3068	4224	rundll32.exe	mssecsvr.exe
PID 4224 wrote to memory of 3068	4224	rundll32.exe	mssecsvr.exe
PID 4224 wrote to memory of 3068	4224	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4196a9d55800bb361a18d3a5c72ffc3b12054c956c03dfff7f5ad34205459958.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2996

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4196a9d55800bb361a18d3a5c72ffc3b12054c956c03dfff7f5ad34205459958.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4224

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3068

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3056

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
4cc57223a848c24edd3592eca2f406c8

SHA1
dc4b085954eb3701d3d5aad65f8cb5054d75d6d9

SHA256
41f3128a398ce2a91872dbdaf26671ae6c33340055834834a90ebae142499d2d

SHA512
1d02d7e746c486c2decf1288ce979b99c3050e00a244fdbf23b87cf11e9a18b678506279e9ea51f902bd330ae31a9474ed6db7fd24f17f7ef9f4d90e1f9937c5

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
4cc57223a848c24edd3592eca2f406c8

SHA1
dc4b085954eb3701d3d5aad65f8cb5054d75d6d9

SHA256
41f3128a398ce2a91872dbdaf26671ae6c33340055834834a90ebae142499d2d

SHA512
1d02d7e746c486c2decf1288ce979b99c3050e00a244fdbf23b87cf11e9a18b678506279e9ea51f902bd330ae31a9474ed6db7fd24f17f7ef9f4d90e1f9937c5

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
4cc57223a848c24edd3592eca2f406c8

SHA1
dc4b085954eb3701d3d5aad65f8cb5054d75d6d9

SHA256
41f3128a398ce2a91872dbdaf26671ae6c33340055834834a90ebae142499d2d

SHA512
1d02d7e746c486c2decf1288ce979b99c3050e00a244fdbf23b87cf11e9a18b678506279e9ea51f902bd330ae31a9474ed6db7fd24f17f7ef9f4d90e1f9937c5

Download Submit
memory/3068-132-0x0000000000000000-mapping.dmp

Download
memory/4224-131-0x0000000000000000-mapping.dmp

Download

Analysis

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