wannacry | 536d57cc6472a9464de16f0b875fa3884a7bdbb3cdfbfc2391cc63698d93403f

Analysis

max time kernel
151s
max time network
155s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29-11-2022 08:40

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General

Target

7a60943b74e7d36a2b1b922f07432a83.dll
Size

5.0MB
MD5

7a60943b74e7d36a2b1b922f07432a83
SHA1

a037d09259b42f0d8da5ee0cf3e0a53d994506e0
SHA256

536d57cc6472a9464de16f0b875fa3884a7bdbb3cdfbfc2391cc63698d93403f
SHA512

f466588c3862d9bf5bbe8c32f4e5daa7df9a3e22abcc83cc07c1b88a5026f19594a14f84758025f6204bf8329300053ce6817b9765419bc601296089f7120b08
SSDEEP

98304:d8qPoBhz1aRxcSUDk36SAkhu3R8yAVp2:d8qPe1Cxcxk3ZAzR8yc4

Score

10^/10

wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1992 mssecsvc.exe
904 mssecsvc.exe
512 tasksche.exe

pid	process
1992	mssecsvc.exe
904	mssecsvc.exe
512	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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
Modifies data under HKEY_USERS 1 IoCs

Processes:

mssecsvc.exe

description ioc process

Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 960 wrote to memory of 628	960	rundll32.exe	rundll32.exe
PID 628 wrote to memory of 1992	628	rundll32.exe	mssecsvc.exe
PID 628 wrote to memory of 1992	628	rundll32.exe	mssecsvc.exe
PID 628 wrote to memory of 1992	628	rundll32.exe	mssecsvc.exe
PID 628 wrote to memory of 1992	628	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a60943b74e7d36a2b1b922f07432a83.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a60943b74e7d36a2b1b922f07432a83.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:628

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1992

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:512

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:904

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
21c6f57c2537b69b693692525a9a9b7b

SHA1
e16591bad0302a8d67a1088f49939fa63df939cc

SHA256
ab3d3940cb490414874db8b24d670390c22c99966c3d15cf2cb7bd1342032bf3

SHA512
01e1b44f691c8a4d7c84100bf2ed01bee0df96f9d7e1209aac4aa7c72738cc9d0e208a6533284498860af9fd9cca001349c4268d58283679e2e2e5d8688f7236

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
21c6f57c2537b69b693692525a9a9b7b

SHA1
e16591bad0302a8d67a1088f49939fa63df939cc

SHA256
ab3d3940cb490414874db8b24d670390c22c99966c3d15cf2cb7bd1342032bf3

SHA512
01e1b44f691c8a4d7c84100bf2ed01bee0df96f9d7e1209aac4aa7c72738cc9d0e208a6533284498860af9fd9cca001349c4268d58283679e2e2e5d8688f7236

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
21c6f57c2537b69b693692525a9a9b7b

SHA1
e16591bad0302a8d67a1088f49939fa63df939cc

SHA256
ab3d3940cb490414874db8b24d670390c22c99966c3d15cf2cb7bd1342032bf3

SHA512
01e1b44f691c8a4d7c84100bf2ed01bee0df96f9d7e1209aac4aa7c72738cc9d0e208a6533284498860af9fd9cca001349c4268d58283679e2e2e5d8688f7236

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
8812b0e876464ebe1e95a2c3ce33ab86

SHA1
4f2e2c0314381fada60acd6906c6d496f29a9570

SHA256
49e85257359b97b88df921b8dcd81c2c285b3bd746016c85a94dd35d5e609085

SHA512
d6619145dcaa8131b7200a4cde1eec7b5d708fc3fa1334d229a28e6e70a018323c9e15f66fd4e06b151d9a367d258d2263548a050bde57bae462f631377ac8d7

Download Submit
memory/628-54-0x0000000000000000-mapping.dmp

Download
memory/628-55-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download
memory/1992-56-0x0000000000000000-mapping.dmp

Download