wannacry | b5248a20ec1173991c977fa52a8aebbae35f0123be80fe120e827cb0fb5d82cc

Analysis

max time kernel
150s
max time network
153s
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, 01:38

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General

Target
34d281dc1cf62696c6d3b5897243aabc.dll
Size 5.0MB
Sample220720-b2dx8aabd9
SHA256 b5248a20ec1173991c977fa52a8aebbae35f0123be80fe120e827cb0fb5d82cc
MD5 34d281dc1cf62696c6d3b5897243aabc
SHA1 b5e94cc591d9acd1f04e16d2af251553ee561e0c
SHA512 80a8c192ce8787a4bf767e9b1a0ae60ba4cb77b88522a78e6d876fd5eb10d1eeffa8edfb99e5db82fbbdf586ac4f16af14bbbec5a95387a233f68b81254853de
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3234) 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

pid	Process
1432	mssecsvr.exe
4964	mssecsvr.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

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

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

description	pid	Process	procid_target
PID 820 wrote to memory of 4756	820	rundll32.exe	80
PID 820 wrote to memory of 4756	820	rundll32.exe	80
PID 820 wrote to memory of 4756	820	rundll32.exe	80
PID 4756 wrote to memory of 1432	4756	rundll32.exe	81
PID 4756 wrote to memory of 1432	4756	rundll32.exe	81
PID 4756 wrote to memory of 1432	4756	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\34d281dc1cf62696c6d3b5897243aabc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:820
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\34d281dc1cf62696c6d3b5897243aabc.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4756
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1432

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4964

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

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Downloads

mssecsvr.exe

Path C:\WINDOWS\mssecsvr.exe
Size 2.2MB
SHA256 c4a371863414f04f0ed7b2028094823301bcbea4f40e7f94104046c98d315fd8
MD5 1c9d034deb52ac7bf38a565728d94886
SHA1 9459d340dbfff28b74c057a57cde24f9239129da
SHA512 a673e2c6140bf3ce005edd3ebdb9f92bc3118fb94e5499d6ca5c7a51261fa2059b2b677c084986400ac25d1b7497472fe390530b858d42c99408e4f6d6869d2f
SSDEEP 49152:QnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARd:QWqPoBhz1aRxcSUDk36SAEd
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 c4a371863414f04f0ed7b2028094823301bcbea4f40e7f94104046c98d315fd8
MD5 1c9d034deb52ac7bf38a565728d94886
SHA1 9459d340dbfff28b74c057a57cde24f9239129da
SHA512 a673e2c6140bf3ce005edd3ebdb9f92bc3118fb94e5499d6ca5c7a51261fa2059b2b677c084986400ac25d1b7497472fe390530b858d42c99408e4f6d6869d2f
SSDEEP 49152:QnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARd:QWqPoBhz1aRxcSUDk36SAEd
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 c4a371863414f04f0ed7b2028094823301bcbea4f40e7f94104046c98d315fd8
MD5 1c9d034deb52ac7bf38a565728d94886
SHA1 9459d340dbfff28b74c057a57cde24f9239129da
SHA512 a673e2c6140bf3ce005edd3ebdb9f92bc3118fb94e5499d6ca5c7a51261fa2059b2b677c084986400ac25d1b7497472fe390530b858d42c99408e4f6d6869d2f
SSDEEP 49152:QnNQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARd:QWqPoBhz1aRxcSUDk36SAEd
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads