wannacry | efc3519b38a9b411542e89a1ed42b899dd78de56714efbaa64453d8380c83154

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 03:02

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General

Target

ef11f47072fe3c055c5f5e735eb43d22.dll
Size

5.0MB
MD5

ef11f47072fe3c055c5f5e735eb43d22
SHA1

b54d9167b063f67dea42e98f21649105881094db
SHA256

efc3519b38a9b411542e89a1ed42b899dd78de56714efbaa64453d8380c83154
SHA512

2585a2d39ccac69b6b949e3384ff8016ea65ed7be6f36231876eb21d13ac35de656a900234f554f44c6b644672fa53118ec1ddb9cec2564d9e891c183314de66

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3183) 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

2124 mssecsvc.exe
1688 mssecsvc.exe
4420 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
2124	mssecsvc.exe
1688	mssecsvc.exe
4420	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 4160 wrote to memory of 460	4160	rundll32.exe	rundll32.exe
PID 4160 wrote to memory of 460	4160	rundll32.exe	rundll32.exe
PID 4160 wrote to memory of 460	4160	rundll32.exe	rundll32.exe
PID 460 wrote to memory of 2124	460	rundll32.exe	mssecsvc.exe
PID 460 wrote to memory of 2124	460	rundll32.exe	mssecsvc.exe
PID 460 wrote to memory of 2124	460	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef11f47072fe3c055c5f5e735eb43d22.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4160

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef11f47072fe3c055c5f5e735eb43d22.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:460

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2124

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4420

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1688

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
a2a2a629188be7d0c495254e50d45eb5

SHA1
b62549c4dc913a9edb44ae1764661e660670c378

SHA256
cd6df802336cf46b4ed4195f93f51507e90651467b6bb093af38c7e40727182e

SHA512
c1ef422fe630aca3803b421ee444b5b8b014b7c8e0c75d14d619208b1109d638727b9a2b48ded77a1d8530ba7f602b12925bd9fced7124113d5241820ee36397

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a2a2a629188be7d0c495254e50d45eb5

SHA1
b62549c4dc913a9edb44ae1764661e660670c378

SHA256
cd6df802336cf46b4ed4195f93f51507e90651467b6bb093af38c7e40727182e

SHA512
c1ef422fe630aca3803b421ee444b5b8b014b7c8e0c75d14d619208b1109d638727b9a2b48ded77a1d8530ba7f602b12925bd9fced7124113d5241820ee36397

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a2a2a629188be7d0c495254e50d45eb5

SHA1
b62549c4dc913a9edb44ae1764661e660670c378

SHA256
cd6df802336cf46b4ed4195f93f51507e90651467b6bb093af38c7e40727182e

SHA512
c1ef422fe630aca3803b421ee444b5b8b014b7c8e0c75d14d619208b1109d638727b9a2b48ded77a1d8530ba7f602b12925bd9fced7124113d5241820ee36397

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3878287a5bc8e14c5ac5845fd8bdf10e

SHA1
38f3fa8615eb53267a625ff5f4825d86467a7bfa

SHA256
6b64090f7695103c76d9fcd18f4354decd1ae2625a216dc270044ffc7ed0d93d

SHA512
6d8518a53352f8ee98d47bfd4fae0943b308ff02bba88b5b493cba5202c949967a73447bd12aec03d1ab7514fdf39959ff84258ec2907da6716392885882d890

Download Submit
memory/460-130-0x0000000000000000-mapping.dmp

Download
memory/2124-131-0x0000000000000000-mapping.dmp

Download