wannacry | 3534ca1c2f0bc7f1e7bddd39d156a2cce00987ed4c22d2817680bfa5fc8ccdf0

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
19/07/2022, 23:37

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General

Target
21fb31606845c8fd8d82260bb0ea260f.dll
Size 5.0MB
Sample220719-3l481sheb2
SHA256 3534ca1c2f0bc7f1e7bddd39d156a2cce00987ed4c22d2817680bfa5fc8ccdf0
MD5 21fb31606845c8fd8d82260bb0ea260f
SHA1 c4e230392f7a95e383a358fcf88d9b68b3d979d2
SHA512 fdd7ea707610c09ec7e88457aa63a239b97ea935a438ad89c87f76a749b25a419703ba9a9b421e52892ee2499bfa73f26c9d01befa6c51057d4812116eee6aca
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 (3106) 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
5008	mssecsvr.exe
1032	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
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 4204	3848	rundll32.exe	79
PID 3848 wrote to memory of 4204	3848	rundll32.exe	79
PID 3848 wrote to memory of 4204	3848	rundll32.exe	79
PID 4204 wrote to memory of 5008	4204	rundll32.exe	80
PID 4204 wrote to memory of 5008	4204	rundll32.exe	80
PID 4204 wrote to memory of 5008	4204	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\21fb31606845c8fd8d82260bb0ea260f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3848
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\21fb31606845c8fd8d82260bb0ea260f.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4204
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:5008

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1032

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 cf11a832eb1cd494bea55294740ec00d7c8a906cca8074d237d017fc349d3765
MD5 456fb8c6da133490533b067a8f206a30
SHA1 fd1d8f09283c53d1e652c8a6b2595ce558cdcd0f
SHA512 3fbe1869ff866dad2aa41e060078dda43a8412a7ec82300583905eaf70cddc1d92d338a740f5bb0e453435b55595713834548e31104c7bd70506065ba71d562b
SSDEEP 49152:QnHqMSPbcBVQej/1IT+TSqTdX1HkQo6SAARdhnvn:QHqPoBhz1KcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 cf11a832eb1cd494bea55294740ec00d7c8a906cca8074d237d017fc349d3765
MD5 456fb8c6da133490533b067a8f206a30
SHA1 fd1d8f09283c53d1e652c8a6b2595ce558cdcd0f
SHA512 3fbe1869ff866dad2aa41e060078dda43a8412a7ec82300583905eaf70cddc1d92d338a740f5bb0e453435b55595713834548e31104c7bd70506065ba71d562b
SSDEEP 49152:QnHqMSPbcBVQej/1IT+TSqTdX1HkQo6SAARdhnvn:QHqPoBhz1KcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

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mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 cf11a832eb1cd494bea55294740ec00d7c8a906cca8074d237d017fc349d3765
MD5 456fb8c6da133490533b067a8f206a30
SHA1 fd1d8f09283c53d1e652c8a6b2595ce558cdcd0f
SHA512 3fbe1869ff866dad2aa41e060078dda43a8412a7ec82300583905eaf70cddc1d92d338a740f5bb0e453435b55595713834548e31104c7bd70506065ba71d562b
SSDEEP 49152:QnHqMSPbcBVQej/1IT+TSqTdX1HkQo6SAARdhnvn:QHqPoBhz1KcSUDk36SAEdhvn
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