wannacry | 47207e889ebb324db2a2ce8bc1f5110b9d24ad55fdcf90636fe96b3fe4763839

Analysis

max time kernel
149s
max time network
152s
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 01:59

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General

Target

300115bd5e54c0a87901db6a4038a58c.dll
Size

5.0MB
MD5

300115bd5e54c0a87901db6a4038a58c
SHA1

a942fae44d690941920a7534fdfbe22c544f0e5d
SHA256

47207e889ebb324db2a2ce8bc1f5110b9d24ad55fdcf90636fe96b3fe4763839
SHA512

1b78b7985e43eb375e82d28ce2f9f36cf23a2fd9e041908c38fd1dc0f737fcf7845efa708c5125e1e977863edf52978a73e2b7ea22363ba8848d4464566f3294

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3270) 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

992 mssecsvc.exe
2732 mssecsvc.exe
3212 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
992	mssecsvc.exe
2732	mssecsvc.exe
3212	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
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 5100 wrote to memory of 1032	5100	rundll32.exe	rundll32.exe
PID 5100 wrote to memory of 1032	5100	rundll32.exe	rundll32.exe
PID 5100 wrote to memory of 1032	5100	rundll32.exe	rundll32.exe
PID 1032 wrote to memory of 992	1032	rundll32.exe	mssecsvc.exe
PID 1032 wrote to memory of 992	1032	rundll32.exe	mssecsvc.exe
PID 1032 wrote to memory of 992	1032	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\300115bd5e54c0a87901db6a4038a58c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5100

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\300115bd5e54c0a87901db6a4038a58c.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1032

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:992

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:3212

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2732

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
58cf59fd6b0c8d3733fb00489ae5f324

SHA1
b44d38275719bd70389298b1581497803760109f

SHA256
4510acfb2cdd6eab0faf1a337c96fb0231f531dd8b00612e97211c63ab647918

SHA512
a239ce26282355cd93fb8ff7deb8dcfdf2678f7c4455836f422dfc116c1502c554c0e939b0ef9b8f82da8465a9cf1050b57217a6c51722c86e3779e4f087d20c

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
58cf59fd6b0c8d3733fb00489ae5f324

SHA1
b44d38275719bd70389298b1581497803760109f

SHA256
4510acfb2cdd6eab0faf1a337c96fb0231f531dd8b00612e97211c63ab647918

SHA512
a239ce26282355cd93fb8ff7deb8dcfdf2678f7c4455836f422dfc116c1502c554c0e939b0ef9b8f82da8465a9cf1050b57217a6c51722c86e3779e4f087d20c

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
58cf59fd6b0c8d3733fb00489ae5f324

SHA1
b44d38275719bd70389298b1581497803760109f

SHA256
4510acfb2cdd6eab0faf1a337c96fb0231f531dd8b00612e97211c63ab647918

SHA512
a239ce26282355cd93fb8ff7deb8dcfdf2678f7c4455836f422dfc116c1502c554c0e939b0ef9b8f82da8465a9cf1050b57217a6c51722c86e3779e4f087d20c

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
1ee11f8b7f540bb4eb15f68940c14118

SHA1
d3beb738f25428ff35e26ec12259ef5eaa1b89ac

SHA256
356cdece8f3c4be17f5451fd4728c23a5db3e800c87b26c839e0141412891dbb

SHA512
008521af0174182805f042cc90417d7500a5cbbb229f013b64a06fefa46052570e01bf035748f333dddc5137a7cfaa5aaccafa8b6211ea19e262c45bbaf87574

Download Submit
memory/992-131-0x0000000000000000-mapping.dmp

Download
memory/1032-130-0x0000000000000000-mapping.dmp

Download