wannacry | 83b7102a1ab8f7b2b992b4cf08bf4bef45eb308671c33e4d807444cad54ba564

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 01:08

Target

dd36b33a299ea77c388136c939109fbf.dll
Size

5.0MB
MD5

dd36b33a299ea77c388136c939109fbf
SHA1

6eb300775c9a7bb8e71384927b1c521705994fbc
SHA256

83b7102a1ab8f7b2b992b4cf08bf4bef45eb308671c33e4d807444cad54ba564
SHA512

efca1713c1f42c2a5c375f7a5357d392b5c32f8710ccc1fd66552a6d923cdb4786f3ca2ce7aa7c0772c7f38cbd58a04bd89cdb24525a83007505e3ca85969cfc

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3269) 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

1916 mssecsvr.exe
3044 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
1916	mssecsvr.exe
3044	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 1708 wrote to memory of 2412	1708	rundll32.exe	rundll32.exe
PID 1708 wrote to memory of 2412	1708	rundll32.exe	rundll32.exe
PID 1708 wrote to memory of 2412	1708	rundll32.exe	rundll32.exe
PID 2412 wrote to memory of 1916	2412	rundll32.exe	mssecsvr.exe
PID 2412 wrote to memory of 1916	2412	rundll32.exe	mssecsvr.exe
PID 2412 wrote to memory of 1916	2412	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dd36b33a299ea77c388136c939109fbf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1708

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
475a76a2589269389de865062dc9e83f

SHA1
5e44696ee16a69e2c3081e6e171c18765cdcdefb

SHA256
f03f7c23c18ce5c9a650e4047cb350dc78200113e389614235eb3cf03bcb195c

SHA512
05930b6b265165fee332f4cffafcf2704c92ff53b7052957d9d9a3313920873328ceb4dcc86f3fa5ab67639e3896726e3c4777f759909de13f5787fed22bb7d3

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

MD5
475a76a2589269389de865062dc9e83f

SHA1
5e44696ee16a69e2c3081e6e171c18765cdcdefb

SHA256
f03f7c23c18ce5c9a650e4047cb350dc78200113e389614235eb3cf03bcb195c

SHA512
05930b6b265165fee332f4cffafcf2704c92ff53b7052957d9d9a3313920873328ceb4dcc86f3fa5ab67639e3896726e3c4777f759909de13f5787fed22bb7d3

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

MD5
475a76a2589269389de865062dc9e83f

SHA1
5e44696ee16a69e2c3081e6e171c18765cdcdefb

SHA256
f03f7c23c18ce5c9a650e4047cb350dc78200113e389614235eb3cf03bcb195c

SHA512
05930b6b265165fee332f4cffafcf2704c92ff53b7052957d9d9a3313920873328ceb4dcc86f3fa5ab67639e3896726e3c4777f759909de13f5787fed22bb7d3

Download Submit
memory/1916-131-0x0000000000000000-mapping.dmp

Download
memory/2412-130-0x0000000000000000-mapping.dmp

Download