wannacry | 6150c2592384c9a6bd61f7c1c639a880ad280c990cb42dd85f2057ae98749ccc

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 02:21

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General

Target

76bdc9c6a2d8643950698542a606efab.dll
Size

5.0MB
MD5

76bdc9c6a2d8643950698542a606efab
SHA1

4bd52eee52b52c0b9e1e3bbad7ff8933c7c56c03
SHA256

6150c2592384c9a6bd61f7c1c639a880ad280c990cb42dd85f2057ae98749ccc
SHA512

078c54e3a43fb728882cca77e1444a2d082cea8a8acd72a7b9203d78ce70b4078446019a6cd0596e3b3a0ff4d169af0225a7ab4fb97b25b4202bbc09633baf6c

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3152) 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

2860 mssecsvc.exe
3620 mssecsvc.exe
3780 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 Scanning
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
2860	mssecsvc.exe
3620	mssecsvc.exe
3780	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3856 wrote to memory of 4576	3856	rundll32.exe	rundll32.exe
PID 3856 wrote to memory of 4576	3856	rundll32.exe	rundll32.exe
PID 3856 wrote to memory of 4576	3856	rundll32.exe	rundll32.exe
PID 4576 wrote to memory of 2860	4576	rundll32.exe	mssecsvc.exe
PID 4576 wrote to memory of 2860	4576	rundll32.exe	mssecsvc.exe
PID 4576 wrote to memory of 2860	4576	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\76bdc9c6a2d8643950698542a606efab.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3856

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\76bdc9c6a2d8643950698542a606efab.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4576

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2860

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3780

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3620

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
e0036e0d93f666c290c703ab0a78aa6c

SHA1
53a2a455ddfad57178e54594b0515e72029d2b66

SHA256
0552156f7c82c2207119395f34ef57de30e5aecd9ed36c4bbedfed45cab4bdc2

SHA512
f9716d7b9e7c67d7bcd6aa4699c53661d8c0b19abcdd37edb7c83dc44d45c05e55574fc1cd06760d650bbaac2c3b81f239f1a4270243a7bd99864b3cce4ed810

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

MD5
e0036e0d93f666c290c703ab0a78aa6c

SHA1
53a2a455ddfad57178e54594b0515e72029d2b66

SHA256
0552156f7c82c2207119395f34ef57de30e5aecd9ed36c4bbedfed45cab4bdc2

SHA512
f9716d7b9e7c67d7bcd6aa4699c53661d8c0b19abcdd37edb7c83dc44d45c05e55574fc1cd06760d650bbaac2c3b81f239f1a4270243a7bd99864b3cce4ed810

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

MD5
e0036e0d93f666c290c703ab0a78aa6c

SHA1
53a2a455ddfad57178e54594b0515e72029d2b66

SHA256
0552156f7c82c2207119395f34ef57de30e5aecd9ed36c4bbedfed45cab4bdc2

SHA512
f9716d7b9e7c67d7bcd6aa4699c53661d8c0b19abcdd37edb7c83dc44d45c05e55574fc1cd06760d650bbaac2c3b81f239f1a4270243a7bd99864b3cce4ed810

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

MD5
34de8be969a83865dd37c378b7cea60d

SHA1
d3c07ba3907737c05af16ec1e1fbdb19e32680f8

SHA256
8184218abffccce34002ef7abca6ead0d717ec967870cd8e60304d00a5b4a999

SHA512
3a091f12c4feb491208d762a87d1351e3941d8d15934f067576e64a91f27aa006eae01ca00cce795652b07b909dd9f7f69fbb5a39c46db6222393bb4cc46077c

Download Submit
memory/2860-131-0x0000000000000000-mapping.dmp

Download
memory/4576-130-0x0000000000000000-mapping.dmp

Download