wannacry | 154c56bb51ad5c9f3e5deb0adaf0cd502bd37abe06fa2a33a2d08a50293c4c19

Analysis

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

Target

4696987fb3ce51babd37d6c61cdc53a2.dll
Size

5.0MB
MD5

4696987fb3ce51babd37d6c61cdc53a2
SHA1

4c1271091510cc5a087f2b70b62a9a509018c577
SHA256

154c56bb51ad5c9f3e5deb0adaf0cd502bd37abe06fa2a33a2d08a50293c4c19
SHA512

473191b99fdd09db4d001f4c5870ee5204fb5eea47faa6b0cb4dbf5346caf846d92c11b223d0845fdec6084954055f92b150631c3d96b1d419bb6e3c2675f4d3

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3255) 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

3536 mssecsvr.exe
4164 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
3536	mssecsvr.exe
4164	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
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
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3172 wrote to memory of 4144	3172	rundll32.exe	rundll32.exe
PID 3172 wrote to memory of 4144	3172	rundll32.exe	rundll32.exe
PID 3172 wrote to memory of 4144	3172	rundll32.exe	rundll32.exe
PID 4144 wrote to memory of 3536	4144	rundll32.exe	mssecsvr.exe
PID 4144 wrote to memory of 3536	4144	rundll32.exe	mssecsvr.exe
PID 4144 wrote to memory of 3536	4144	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4696987fb3ce51babd37d6c61cdc53a2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3172

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
4d0974404e3280388a3e76496fe379db

SHA1
09ed10c0490b7545775866149e5d75c3bb5823bb

SHA256
5478341baa7b7ed2d71f8e64efddd0ea495aeaa42bad6a979285ded6c4da652d

SHA512
268ada1aedc03da856a051d161bbcee52ee0a8c7854abcbcd1ccd0b51f41535856407da606fb74f75463ec6d7f7444f13ca6ff86a7845e6a35d99f5db4a4dd25

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
4d0974404e3280388a3e76496fe379db

SHA1
09ed10c0490b7545775866149e5d75c3bb5823bb

SHA256
5478341baa7b7ed2d71f8e64efddd0ea495aeaa42bad6a979285ded6c4da652d

SHA512
268ada1aedc03da856a051d161bbcee52ee0a8c7854abcbcd1ccd0b51f41535856407da606fb74f75463ec6d7f7444f13ca6ff86a7845e6a35d99f5db4a4dd25

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
4d0974404e3280388a3e76496fe379db

SHA1
09ed10c0490b7545775866149e5d75c3bb5823bb

SHA256
5478341baa7b7ed2d71f8e64efddd0ea495aeaa42bad6a979285ded6c4da652d

SHA512
268ada1aedc03da856a051d161bbcee52ee0a8c7854abcbcd1ccd0b51f41535856407da606fb74f75463ec6d7f7444f13ca6ff86a7845e6a35d99f5db4a4dd25

Download Submit
memory/3536-131-0x0000000000000000-mapping.dmp

Download
memory/4144-130-0x0000000000000000-mapping.dmp

Download