wannacry | 09e6086b3be2835f471faf4bfdb9621392bade4ab32b6115a81adf722d6f5e10

Analysis

max time kernel
150s
max time network
153s
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 02:03

Target

5fc475dfe7208fedcf1e88c865306999.dll
Size

5.0MB
MD5

5fc475dfe7208fedcf1e88c865306999
SHA1

537d2c5ffd3d7695ba8a8fef7d7d89c006db9ccc
SHA256

09e6086b3be2835f471faf4bfdb9621392bade4ab32b6115a81adf722d6f5e10
SHA512

0627e503a34e182a1fe4e20cc8855a21f0ecfa032440753a47ebdb2023dbaa70be987b2123c9886109bd7f5f4e168c5a55045744df6c7e4aeb0a385c83a65ec7

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2609) 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 2 IoCs

Processes:

mssecsvc.exemssecsvc.exe

pid process

4408 mssecsvc.exe
4356 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

pid	process
4408	mssecsvc.exe
4356	mssecsvc.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 2816 wrote to memory of 4360	2816	rundll32.exe	rundll32.exe
PID 2816 wrote to memory of 4360	2816	rundll32.exe	rundll32.exe
PID 2816 wrote to memory of 4360	2816	rundll32.exe	rundll32.exe
PID 4360 wrote to memory of 4408	4360	rundll32.exe	mssecsvc.exe
PID 4360 wrote to memory of 4408	4360	rundll32.exe	mssecsvc.exe
PID 4360 wrote to memory of 4408	4360	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5fc475dfe7208fedcf1e88c865306999.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2816

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\WINDOWS\mssecsvc.exe

Filesize
2.2MB

MD5
b3291ee8c7bc73ac2c00a62294008a3f

SHA1
7ca4c0311e5fba6f3672d67a143f07645e27fc0a

SHA256
ee03deeafa4fbdf8aee595639384c7e094817748ad7dde0c724f9fca298b9372

SHA512
11a412f91f75ed24a8816fda97af86c43e57e326d5d7bc1985c2c5e3f913d086a9ce1bee623b4e28bc30b05cad822a00ee06f2172eb010c080267140e0aa4662

Download Submit
C:\Windows\mssecsvc.exe

Filesize
2.2MB

MD5
b3291ee8c7bc73ac2c00a62294008a3f

SHA1
7ca4c0311e5fba6f3672d67a143f07645e27fc0a

SHA256
ee03deeafa4fbdf8aee595639384c7e094817748ad7dde0c724f9fca298b9372

SHA512
11a412f91f75ed24a8816fda97af86c43e57e326d5d7bc1985c2c5e3f913d086a9ce1bee623b4e28bc30b05cad822a00ee06f2172eb010c080267140e0aa4662

Download Submit
C:\Windows\mssecsvc.exe

Filesize
2.2MB

MD5
b3291ee8c7bc73ac2c00a62294008a3f

SHA1
7ca4c0311e5fba6f3672d67a143f07645e27fc0a

SHA256
ee03deeafa4fbdf8aee595639384c7e094817748ad7dde0c724f9fca298b9372

SHA512
11a412f91f75ed24a8816fda97af86c43e57e326d5d7bc1985c2c5e3f913d086a9ce1bee623b4e28bc30b05cad822a00ee06f2172eb010c080267140e0aa4662

Download Submit
memory/4360-130-0x0000000000000000-mapping.dmp

Download
memory/4408-131-0x0000000000000000-mapping.dmp

Download