wannacry | 4ffce411f462670df9a7d95579bbf1fab89df79e1548bfc21f974ee1721b0432

General

Target

4ffce411f462670df9a7d95579bbf1fab89df79e1548bfc21f974ee1721b0432.dll
Size

5.0MB
MD5

42e738ed97f87cd7a1da297a81fca30e
SHA1

c7f969152a9d332bcccebf82afb38a5a3a66a7cb
SHA256

4ffce411f462670df9a7d95579bbf1fab89df79e1548bfc21f974ee1721b0432
SHA512

346be9dd8018067aa34d64521a7a6cee72e0436c30422ece384f177de4266a86508422d04e0b0a9126b3907a596871a588c355c43247639079aa64c9e2f29d0b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1282) 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

1216 mssecsvc.exe
1976 mssecsvc.exe
1968 tasksche.exe

pid	process
1216	mssecsvc.exe
1976	mssecsvc.exe
1968	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 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 912 wrote to memory of 1004	912	rundll32.exe	rundll32.exe
PID 1004 wrote to memory of 1216	1004	rundll32.exe	mssecsvc.exe
PID 1004 wrote to memory of 1216	1004	rundll32.exe	mssecsvc.exe
PID 1004 wrote to memory of 1216	1004	rundll32.exe	mssecsvc.exe
PID 1004 wrote to memory of 1216	1004	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ffce411f462670df9a7d95579bbf1fab89df79e1548bfc21f974ee1721b0432.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ffce411f462670df9a7d95579bbf1fab89df79e1548bfc21f974ee1721b0432.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1004

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1216

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1968

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:1976

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\mssecsvc.exe
Filesize
3.6MB

MD5
5e1ea63e17fe3ba96369958edcf18dda

SHA1
37b98029f687a63caf28482456d6090cd4ac1dff

SHA256
64ce85fc6096610b695c207271cc11ea1cff1c945ce2097e2e5dadb7c2fd4da4

SHA512
9423bb7869464b05150f08cde0cede9ece15ee818d536c32643aeadc058857dcc9da2a90ff042eb18df287be4b9d5a2ea089bcd1812d196d9c2d5b11c4acfee8

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

MD5
5e1ea63e17fe3ba96369958edcf18dda

SHA1
37b98029f687a63caf28482456d6090cd4ac1dff

SHA256
64ce85fc6096610b695c207271cc11ea1cff1c945ce2097e2e5dadb7c2fd4da4

SHA512
9423bb7869464b05150f08cde0cede9ece15ee818d536c32643aeadc058857dcc9da2a90ff042eb18df287be4b9d5a2ea089bcd1812d196d9c2d5b11c4acfee8

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

MD5
5e1ea63e17fe3ba96369958edcf18dda

SHA1
37b98029f687a63caf28482456d6090cd4ac1dff

SHA256
64ce85fc6096610b695c207271cc11ea1cff1c945ce2097e2e5dadb7c2fd4da4

SHA512
9423bb7869464b05150f08cde0cede9ece15ee818d536c32643aeadc058857dcc9da2a90ff042eb18df287be4b9d5a2ea089bcd1812d196d9c2d5b11c4acfee8

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

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

Download Submit
memory/1004-54-0x0000000000000000-mapping.dmp

Download
memory/1004-55-0x0000000074DB1000-0x0000000074DB3000-memory.dmp

Filesize
8KB

Download
memory/1216-56-0x0000000000000000-mapping.dmp

Download
memory/1216-59-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/1216-65-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/1976-64-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/1976-66-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download

Analysis

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