wannacry | 2f533e5c3c70b96ca7155942b51a20cde0abe2f955d67fa6b436a8dda664f746

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02-07-2024 19:05

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General

Target

2f533e5c3c70b96ca7155942b51a20cde0abe2f955d67fa6b436a8dda664f746.dll
Size

5.0MB
MD5

64416e602428cc5a299a015a0fa9f1a6
SHA1

f8b6a8cc3405b348147b5ac432ceef11d5e84ae4
SHA256

2f533e5c3c70b96ca7155942b51a20cde0abe2f955d67fa6b436a8dda664f746
SHA512

03fddfe4546646a880e387a71a662b1f406073a03e67402febadd8836b2c7ec962183a59f2e6700edca44d6fc8ca975e313ffd39bc989a7aa72b7bd5e777a771
SSDEEP

98304:BDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:BDqPe1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2701) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

4440 mssecsvc.exe
3276 mssecsvc.exe
3160 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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

pid	process
4440	mssecsvc.exe
3276	mssecsvc.exe
3160	tasksche.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 5 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2508 wrote to memory of 4988	2508	rundll32.exe	rundll32.exe
PID 2508 wrote to memory of 4988	2508	rundll32.exe	rundll32.exe
PID 2508 wrote to memory of 4988	2508	rundll32.exe	rundll32.exe
PID 4988 wrote to memory of 4440	4988	rundll32.exe	mssecsvc.exe
PID 4988 wrote to memory of 4440	4988	rundll32.exe	mssecsvc.exe
PID 4988 wrote to memory of 4440	4988	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2f533e5c3c70b96ca7155942b51a20cde0abe2f955d67fa6b436a8dda664f746.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2508

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2f533e5c3c70b96ca7155942b51a20cde0abe2f955d67fa6b436a8dda664f746.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4988

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4440

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3160

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
11d821b793dbfc5ac4cce2752a77f6c6

SHA1
0f59b154ab475ff533ed4e586e49e2b5314a07d7

SHA256
9cae5b67b0b3924aed099b0b49bed778defe3ea95dd4800730e92897e2ebfd15

SHA512
10ff32eb78993b6cc4dec18a52f2b7a7acaeac8421e8755d1aac7da63f0c9e48598cd1c19a4dc45a70047425f8556629482561eb097149d77a2a3475ceb22ff8

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

Download Submit
memory/3276-6-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/3276-12-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/4440-4-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/4440-7-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/4440-11-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download