wannacry | fcc65fd1ce9236d8bb5d1615209453f178c27afbadd1a4784920e22ca6b67a1d

Analysis

max time kernel
151s
max time network
156s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25-08-2022 19:32

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General

Target

a6529e30d3ce0e1dfe2d72984b4fe196.dll
Size

5.0MB
MD5

a6529e30d3ce0e1dfe2d72984b4fe196
SHA1

acbee5d6ff1009d1cb4669085f6f9858bca17015
SHA256

fcc65fd1ce9236d8bb5d1615209453f178c27afbadd1a4784920e22ca6b67a1d
SHA512

5b3ef53ae474bd644249fabbc8b0f5e2ebcc26289747c29612dfa27882fc59a21840c85d5de8e8cccc7c8425bef397a51cf352564c681513cbcfbef4719c50bd
SSDEEP

98304:d8qPoBhz1aRxcSUDk36SAhxWa9P593R8yAVp2H:d8qPe1Cxcxk3ZA6adzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1273) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1680 mssecsvc.exe
2020 mssecsvc.exe
2004 tasksche.exe

pid	process
1680	mssecsvc.exe
2020	mssecsvc.exe
2004	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 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 1196 wrote to memory of 952	1196	rundll32.exe	rundll32.exe
PID 952 wrote to memory of 1680	952	rundll32.exe	mssecsvc.exe
PID 952 wrote to memory of 1680	952	rundll32.exe	mssecsvc.exe
PID 952 wrote to memory of 1680	952	rundll32.exe	mssecsvc.exe
PID 952 wrote to memory of 1680	952	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6529e30d3ce0e1dfe2d72984b4fe196.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1196

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a6529e30d3ce0e1dfe2d72984b4fe196.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:952

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1680

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2004

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:2020

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
0e5ccd86d0aded5f6e3ec1aad73d566b

SHA1
7979d83cdd05a2442fac9cfc2d58ecadf50c0383

SHA256
3d6027bff64f5948a54c7b89f51667917e0067bf70c97c1bf98778e2a3588d58

SHA512
341c0f0d87a2371664e1a8d8cef499b54ccff6e5c542db618c76fdc238c0587bad78642d33423838ded37896c8018ccaa5d224c99ebdeebf009c2dd43fa104bc

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
0e5ccd86d0aded5f6e3ec1aad73d566b

SHA1
7979d83cdd05a2442fac9cfc2d58ecadf50c0383

SHA256
3d6027bff64f5948a54c7b89f51667917e0067bf70c97c1bf98778e2a3588d58

SHA512
341c0f0d87a2371664e1a8d8cef499b54ccff6e5c542db618c76fdc238c0587bad78642d33423838ded37896c8018ccaa5d224c99ebdeebf009c2dd43fa104bc

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
0e5ccd86d0aded5f6e3ec1aad73d566b

SHA1
7979d83cdd05a2442fac9cfc2d58ecadf50c0383

SHA256
3d6027bff64f5948a54c7b89f51667917e0067bf70c97c1bf98778e2a3588d58

SHA512
341c0f0d87a2371664e1a8d8cef499b54ccff6e5c542db618c76fdc238c0587bad78642d33423838ded37896c8018ccaa5d224c99ebdeebf009c2dd43fa104bc

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
1aeb661f721395e4f64040e2834b326e

SHA1
92b750f744da9a89d1796cf9b9c1021f7e35184d

SHA256
dd0e4a94f23ca9fd430c9ce9ea97b99f090831ff7f70046dccd2e6f9063ad10b

SHA512
08eadf5dfe5a08a5d0826612d9d8a3527973a068c909d0f105fc5d5e63003cb79c5292ecdc22a243bf270edee76467330838a885d24801d6abc07c75bda70f78

Download Submit
memory/952-54-0x0000000000000000-mapping.dmp

Download
memory/952-55-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/1680-56-0x0000000000000000-mapping.dmp

Download