wannacry | 9a23af3c1a00f24b0863a75e22a294d4983ee6fefa832a9f6a6241810565cfba

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 00:32

Target

eb3b370b3c7897d6a6b6616437183b4f.dll
Size

5.0MB
MD5

eb3b370b3c7897d6a6b6616437183b4f
SHA1

165e0fb3d292e61cf83d0128586a0d36915513a0
SHA256

9a23af3c1a00f24b0863a75e22a294d4983ee6fefa832a9f6a6241810565cfba
SHA512

90590e2b51e3b9018f35fea87dab6a56b50b8131308f90db18fd9598f4ae26ed7d4299c46ba7af3ab302b65d231bd2cf3d1bd1c04ab53c5cd93614f8aaf7a790

Score

10^/10

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3146) 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

3508 mssecsvr.exe
4544 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
3508	mssecsvr.exe
4544	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 1548 wrote to memory of 816	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 816	1548	rundll32.exe	rundll32.exe
PID 1548 wrote to memory of 816	1548	rundll32.exe	rundll32.exe
PID 816 wrote to memory of 3508	816	rundll32.exe	mssecsvr.exe
PID 816 wrote to memory of 3508	816	rundll32.exe	mssecsvr.exe
PID 816 wrote to memory of 3508	816	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\eb3b370b3c7897d6a6b6616437183b4f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1548

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
e2e35b2bbd2093d5ae8996e93c5c435c

SHA1
ce7c096026bbb2139d4add460c173decd8a23143

SHA256
2034cd07ad01f3f741b1e45ca9ca5428ed7aa8d954d96e71c1be20b946b83f31

SHA512
1f1eee8be7e8790c5a0ccc27bbbee26f847625a412147abaee680be68605b769f1e43407ddecce552d8e4ea3771bafd60c8203e3df2ab6d37acfcf4724090f7d

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

MD5
e2e35b2bbd2093d5ae8996e93c5c435c

SHA1
ce7c096026bbb2139d4add460c173decd8a23143

SHA256
2034cd07ad01f3f741b1e45ca9ca5428ed7aa8d954d96e71c1be20b946b83f31

SHA512
1f1eee8be7e8790c5a0ccc27bbbee26f847625a412147abaee680be68605b769f1e43407ddecce552d8e4ea3771bafd60c8203e3df2ab6d37acfcf4724090f7d

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

MD5
e2e35b2bbd2093d5ae8996e93c5c435c

SHA1
ce7c096026bbb2139d4add460c173decd8a23143

SHA256
2034cd07ad01f3f741b1e45ca9ca5428ed7aa8d954d96e71c1be20b946b83f31

SHA512
1f1eee8be7e8790c5a0ccc27bbbee26f847625a412147abaee680be68605b769f1e43407ddecce552d8e4ea3771bafd60c8203e3df2ab6d37acfcf4724090f7d

Download Submit
memory/816-130-0x0000000000000000-mapping.dmp

Download
memory/3508-131-0x0000000000000000-mapping.dmp

Download