wannacry | eedd33dfe6084c4fb8ff22594c5b4e6c35ff76170efa2caf12556a3ae427bf7f

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220715-en
resource tags

arch:x64arch:x86image:win10v2004-20220715-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 02:38

Target

07813c26f199fef5b9963f31c3ab3077.dll
Size

5.0MB
MD5

07813c26f199fef5b9963f31c3ab3077
SHA1

6319cd8890da043cf36832e4d895033b4e502ec9
SHA256

eedd33dfe6084c4fb8ff22594c5b4e6c35ff76170efa2caf12556a3ae427bf7f
SHA512

61793cbf78eecd5c7e05446f86d0a8e4b4170e28652f4d19894741c52d943eb675a274357eb20d08bdcfdaaeb06b070891bcb017efe3ec63ccdf2578bf80a239

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3153) 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

3428 mssecsvr.exe
4428 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
3428	mssecsvr.exe
4428	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 4564 wrote to memory of 2228	4564	rundll32.exe	rundll32.exe
PID 4564 wrote to memory of 2228	4564	rundll32.exe	rundll32.exe
PID 4564 wrote to memory of 2228	4564	rundll32.exe	rundll32.exe
PID 2228 wrote to memory of 3428	2228	rundll32.exe	mssecsvr.exe
PID 2228 wrote to memory of 3428	2228	rundll32.exe	mssecsvr.exe
PID 2228 wrote to memory of 3428	2228	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\07813c26f199fef5b9963f31c3ab3077.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4564

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

C:\WINDOWS\mssecsvr.exe
Filesize
3.6MB

MD5
289caf2bf72f4dceb04c65bf03d7bab1

SHA1
4daa3f803e95a784b47bac4d96f56b879812a85a

SHA256
b668a57b5eda98b43fed817821414f1d0b63bb8cdd481808d49e48b956bd75b6

SHA512
6029ad714e89d81dd797905b5d33962d023f935ae8d845e38d7e2071074c0f747db5870189a9e14c196062d9b3e3edf1edc7458ffc90ebf1717571f84e6b4c20

Download Submit
C:\Windows\mssecsvr.exe
Filesize
3.6MB

MD5
289caf2bf72f4dceb04c65bf03d7bab1

SHA1
4daa3f803e95a784b47bac4d96f56b879812a85a

SHA256
b668a57b5eda98b43fed817821414f1d0b63bb8cdd481808d49e48b956bd75b6

SHA512
6029ad714e89d81dd797905b5d33962d023f935ae8d845e38d7e2071074c0f747db5870189a9e14c196062d9b3e3edf1edc7458ffc90ebf1717571f84e6b4c20

Download Submit
C:\Windows\mssecsvr.exe
Filesize
3.6MB

MD5
289caf2bf72f4dceb04c65bf03d7bab1

SHA1
4daa3f803e95a784b47bac4d96f56b879812a85a

SHA256
b668a57b5eda98b43fed817821414f1d0b63bb8cdd481808d49e48b956bd75b6

SHA512
6029ad714e89d81dd797905b5d33962d023f935ae8d845e38d7e2071074c0f747db5870189a9e14c196062d9b3e3edf1edc7458ffc90ebf1717571f84e6b4c20

Download Submit
memory/2228-130-0x0000000000000000-mapping.dmp

Download
memory/3428-131-0x0000000000000000-mapping.dmp

Download