wannacry | 46ef01945311c5790603ea2bd38444f0bbdaed1a50c53101a82856f81d924089

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 03:00

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General

Target

c122b1bbf01fbea4985e455083c8cbf3.dll
Size

5.0MB
MD5

c122b1bbf01fbea4985e455083c8cbf3
SHA1

554b28c4fd74a59091ad01004626928c4af21b12
SHA256

46ef01945311c5790603ea2bd38444f0bbdaed1a50c53101a82856f81d924089
SHA512

1321704c7b44b1590b8b6d0f8127055f55a6445c052be13af4161f4f5e27e3245ee85db43e38455c999d35615035a18927d430f0d143041bf844e0e2a8cba123

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3144) 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

424 mssecsvc.exe
2068 mssecsvc.exe
2916 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:

rundll32.exemssecsvc.exe

description ioc process

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

pid	process
424	mssecsvc.exe
2068	mssecsvc.exe
2916	tasksche.exe

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

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

description	ioc	process
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 916 wrote to memory of 3944	916	rundll32.exe	rundll32.exe
PID 916 wrote to memory of 3944	916	rundll32.exe	rundll32.exe
PID 916 wrote to memory of 3944	916	rundll32.exe	rundll32.exe
PID 3944 wrote to memory of 424	3944	rundll32.exe	mssecsvc.exe
PID 3944 wrote to memory of 424	3944	rundll32.exe	mssecsvc.exe
PID 3944 wrote to memory of 424	3944	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c122b1bbf01fbea4985e455083c8cbf3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:916

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c122b1bbf01fbea4985e455083c8cbf3.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3944

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:424

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2916

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2068

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
798c86bf295feb1d8b6ebc4d77dbc3d4

SHA1
e878fda33287a92b2edf5b17389bf3a8e2c41c4f

SHA256
92800d90070740d9399389ca089b82684ae25607349a0e15b3bfda772e81199a

SHA512
006ac6536c6bb4d84f64486d65067b6285460e6342f18ce3062ddc0e92ad31081f4fe782965efa72fe37933acf578f162c5c39c8d98d7dddadc198babefce6d8

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
798c86bf295feb1d8b6ebc4d77dbc3d4

SHA1
e878fda33287a92b2edf5b17389bf3a8e2c41c4f

SHA256
92800d90070740d9399389ca089b82684ae25607349a0e15b3bfda772e81199a

SHA512
006ac6536c6bb4d84f64486d65067b6285460e6342f18ce3062ddc0e92ad31081f4fe782965efa72fe37933acf578f162c5c39c8d98d7dddadc198babefce6d8

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
798c86bf295feb1d8b6ebc4d77dbc3d4

SHA1
e878fda33287a92b2edf5b17389bf3a8e2c41c4f

SHA256
92800d90070740d9399389ca089b82684ae25607349a0e15b3bfda772e81199a

SHA512
006ac6536c6bb4d84f64486d65067b6285460e6342f18ce3062ddc0e92ad31081f4fe782965efa72fe37933acf578f162c5c39c8d98d7dddadc198babefce6d8

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
72a0273e5bdad2089ab90020265fcbce

SHA1
4a64856c9b86cc9f74fc6e74524d3cb09c3668a4

SHA256
45dc98a814d1bfd4ba7790b607da53678df7c99e3e1747f7ad4f56899e3805e4

SHA512
e02a324565dee584ba64e47936c5ab6a70d0c00e69e9767bf82d8c8195771a8270699f72ad0d64a490d22b0be32b54ce04c3df973baa8e8b65434781e848eb02

Download Submit
memory/424-131-0x0000000000000000-mapping.dmp

Download
memory/3944-130-0x0000000000000000-mapping.dmp

Download