wannacry | 63748e6acba4cbbeea40093c6571f641c78808f7a79ca0f2c2ad30aaef8be477

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 03:21

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General

Target

70fa9daf70449c9319014eef695648e7.dll
Size

5.0MB
MD5

70fa9daf70449c9319014eef695648e7
SHA1

1caae797acb5a4827176f98be7431ffaedf07a4a
SHA256

63748e6acba4cbbeea40093c6571f641c78808f7a79ca0f2c2ad30aaef8be477
SHA512

f70a42fb58e2218ac755d1135946b5cb92e512f915b97ef9e8e21fa07d084ae5a2dcde725c42e840387c11e6daeda47b88975d9bb117598ba94e7ea62c8128d2

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3202) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1360 mssecsvc.exe
2556 mssecsvc.exe
5032 tasksche.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:

mssecsvc.exerundll32.exe

description ioc process

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

pid	process
1360	mssecsvc.exe
2556	mssecsvc.exe
5032	tasksche.exe

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

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3968 wrote to memory of 2416	3968	rundll32.exe	rundll32.exe
PID 3968 wrote to memory of 2416	3968	rundll32.exe	rundll32.exe
PID 3968 wrote to memory of 2416	3968	rundll32.exe	rundll32.exe
PID 2416 wrote to memory of 1360	2416	rundll32.exe	mssecsvc.exe
PID 2416 wrote to memory of 1360	2416	rundll32.exe	mssecsvc.exe
PID 2416 wrote to memory of 1360	2416	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\70fa9daf70449c9319014eef695648e7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3968

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\70fa9daf70449c9319014eef695648e7.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2416

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1360

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:5032

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2556

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
d2ca307b587409ea5503ec50839cf9df

SHA1
ec8388e071febec5d5c3a8cc6fde342928650115

SHA256
32ce8874b69dcc6aeb43f6034b30d27ec389137651dfff030e1bb93b925584d1

SHA512
cdde1d3e8fbce7b0048c8ff5e743cfe60975d8b83b5c6be138422c6718f768f926b74f5f6ea7abe0a538e1b60a233853885376b3d7c812d08fa614908bc76251

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
d2ca307b587409ea5503ec50839cf9df

SHA1
ec8388e071febec5d5c3a8cc6fde342928650115

SHA256
32ce8874b69dcc6aeb43f6034b30d27ec389137651dfff030e1bb93b925584d1

SHA512
cdde1d3e8fbce7b0048c8ff5e743cfe60975d8b83b5c6be138422c6718f768f926b74f5f6ea7abe0a538e1b60a233853885376b3d7c812d08fa614908bc76251

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
d2ca307b587409ea5503ec50839cf9df

SHA1
ec8388e071febec5d5c3a8cc6fde342928650115

SHA256
32ce8874b69dcc6aeb43f6034b30d27ec389137651dfff030e1bb93b925584d1

SHA512
cdde1d3e8fbce7b0048c8ff5e743cfe60975d8b83b5c6be138422c6718f768f926b74f5f6ea7abe0a538e1b60a233853885376b3d7c812d08fa614908bc76251

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
061c91c00e4dd8670f7d12b057f5f259

SHA1
abe8c1eeedac3a30b25f4b703cbe2012f8fd3da1

SHA256
5edb3724ec3ec13532b8cddda91f08d9bdf2b0a1115fc0617bb0665bc75b9ca5

SHA512
72c16731096d7f32343a7c87b448b69843c281c58eeb9eed91e710e41318978c1c06787c0c892478a43c1357a3c807c8680c2fb39431b952753adc9260927724

Download Submit
memory/1360-131-0x0000000000000000-mapping.dmp

Download
memory/2416-130-0x0000000000000000-mapping.dmp

Download