wannacry | eac6b0bbe69ef8c0dc8e36cbff6d5c2a7cb4d662f4d88e5bc8b596b2275d694b

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 01:53

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General

Target

4880cc5c5074c2f58a770c3a292384f9.dll
Size

5.0MB
MD5

4880cc5c5074c2f58a770c3a292384f9
SHA1

c63ae9a8f1013675ff914b88d257e18bdbac7181
SHA256

eac6b0bbe69ef8c0dc8e36cbff6d5c2a7cb4d662f4d88e5bc8b596b2275d694b
SHA512

914435ff0b3f04c0451bee6aed3b3101f1f89f82cb50c15ee4cddab5716a0a7444ab31afc03103d0d4b0d18467399b3dfc1543749129c3cb7c353db91abda168

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3234) 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

756 mssecsvc.exe
4324 mssecsvc.exe
4088 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
756	mssecsvc.exe
4324	mssecsvc.exe
4088	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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1540 wrote to memory of 3704	1540	rundll32.exe	rundll32.exe
PID 1540 wrote to memory of 3704	1540	rundll32.exe	rundll32.exe
PID 1540 wrote to memory of 3704	1540	rundll32.exe	rundll32.exe
PID 3704 wrote to memory of 756	3704	rundll32.exe	mssecsvc.exe
PID 3704 wrote to memory of 756	3704	rundll32.exe	mssecsvc.exe
PID 3704 wrote to memory of 756	3704	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4880cc5c5074c2f58a770c3a292384f9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1540

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4880cc5c5074c2f58a770c3a292384f9.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3704

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:756

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4088

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4324

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
6e7fe070bf1423650e1880acda3681d0

SHA1
0a0679cd0a1b84022630eb8edaa9917b33d80ff4

SHA256
715e4bb1f29e0d13fa502f77be2d2c8b841db3f3e6c873a4df2adb3f8d6873ad

SHA512
2b974ec0f40248169574ff39f034f215ae5fda49a276687a6ef065d79d4319684ce5463bdfee35cdc1a818ec0fca22857048e868100286d1a3600e81c5f4a107

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
6e7fe070bf1423650e1880acda3681d0

SHA1
0a0679cd0a1b84022630eb8edaa9917b33d80ff4

SHA256
715e4bb1f29e0d13fa502f77be2d2c8b841db3f3e6c873a4df2adb3f8d6873ad

SHA512
2b974ec0f40248169574ff39f034f215ae5fda49a276687a6ef065d79d4319684ce5463bdfee35cdc1a818ec0fca22857048e868100286d1a3600e81c5f4a107

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
6e7fe070bf1423650e1880acda3681d0

SHA1
0a0679cd0a1b84022630eb8edaa9917b33d80ff4

SHA256
715e4bb1f29e0d13fa502f77be2d2c8b841db3f3e6c873a4df2adb3f8d6873ad

SHA512
2b974ec0f40248169574ff39f034f215ae5fda49a276687a6ef065d79d4319684ce5463bdfee35cdc1a818ec0fca22857048e868100286d1a3600e81c5f4a107

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
cb5d464d9db6d56e17ce7c3a507969be

SHA1
b71e9ef4b55b17895be9996a10fe82abd5730f62

SHA256
aba9184f5e1343336fc084a11ab77bd7af11c93044cf7d3111d677dcf995bca4

SHA512
e238111195bded2da19b1e74d6c14cde19556d8660a6d466b14f8275c89c707619235125c31175a3cf0cd1be5d0b0f68551bce74970bb6d140e5b8ea54658da4

Download Submit
memory/756-131-0x0000000000000000-mapping.dmp

Download
memory/3704-130-0x0000000000000000-mapping.dmp

Download