wannacry | 78ecdd4f9eb36ea0463a549c4124b10bbb0fdf9be76d137737de08d701fd25d5

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 01:07

Target

9d709394669a9a07f5e759148968d465.dll
Size

5.0MB
MD5

9d709394669a9a07f5e759148968d465
SHA1

9a4416b56f18112b0694befc7c38f841c73f7c7a
SHA256

78ecdd4f9eb36ea0463a549c4124b10bbb0fdf9be76d137737de08d701fd25d5
SHA512

f0dfed6fb68b28ea39e18977bf821ce812f7034bfcc95661c6b71581389aee58ed9ec0872e8ae6029ff3c2ff75778d9bd0b24dcfbc6a6782724c9f2f1b9fbd5b

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3258) 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:

mssecsvr.exemssecsvr.exe

pid process

4660 mssecsvr.exe
2040 mssecsvr.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.exemssecsvr.exe

description ioc process

File created C:\WINDOWS\mssecsvr.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvr.exe

pid	process
4660	mssecsvr.exe
2040	mssecsvr.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvr.exe

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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 620 wrote to memory of 2336	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 2336	620	rundll32.exe	rundll32.exe
PID 620 wrote to memory of 2336	620	rundll32.exe	rundll32.exe
PID 2336 wrote to memory of 4660	2336	rundll32.exe	mssecsvr.exe
PID 2336 wrote to memory of 4660	2336	rundll32.exe	mssecsvr.exe
PID 2336 wrote to memory of 4660	2336	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9d709394669a9a07f5e759148968d465.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:620

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
0830d3b071fd2284fe81ba31a23a3f42

SHA1
6131eeb47e682e89e06a3b248003c9e70d28f8b6

SHA256
2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34

SHA512
a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
0830d3b071fd2284fe81ba31a23a3f42

SHA1
6131eeb47e682e89e06a3b248003c9e70d28f8b6

SHA256
2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34

SHA512
a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
0830d3b071fd2284fe81ba31a23a3f42

SHA1
6131eeb47e682e89e06a3b248003c9e70d28f8b6

SHA256
2217c0bc7ec7e494cf553f111ac9ab2914699c2d955a4e6a0f182c24abbd6a34

SHA512
a10758273f8ab12674de82100ee8111053d72da452d38b1815c94b502049196858308ca7b4147fd486f7f8dec0e218d227b7f3cc1d612a86df2fe1f03260b464

Download Submit
memory/2336-130-0x0000000000000000-mapping.dmp

Download
memory/4660-131-0x0000000000000000-mapping.dmp

Download