wannacry | 33eed073312dea621896609573b450fc3588a3b87c0d01580942fc4a207f5634

Analysis

max time kernel
152s
max time network
195s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2022, 15:20

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General

Target

33eed073312dea621896609573b450fc3588a3b87c0d01580942fc4a207f5634.dll
Size

5.0MB
MD5

32899ed3680e121ffa948bca159a9136
SHA1

9c58da55106e8f067c009de32c592bd815e43905
SHA256

33eed073312dea621896609573b450fc3588a3b87c0d01580942fc4a207f5634
SHA512

124723e738caf608ceb355cee04dd2ef6fe0f098168502fbae9b2a79035303a6bcd5ddede0757523d8790e09ed2edd719a9cb8b3255d95316468b4026cacbea0
SSDEEP

98304:+DqPoBVxcSUDk36SAEdhvxWa9P593R8yAVp2H:+DqPKxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3037) 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

pid	Process
4356	mssecsvc.exe
4900	mssecsvc.exe
3480	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

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

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

description	pid	Process	procid_target
PID 2624 wrote to memory of 4440	2624	rundll32.exe	79
PID 2624 wrote to memory of 4440	2624	rundll32.exe	79
PID 2624 wrote to memory of 4440	2624	rundll32.exe	79
PID 4440 wrote to memory of 4356	4440	rundll32.exe	80
PID 4440 wrote to memory of 4356	4440	rundll32.exe	80
PID 4440 wrote to memory of 4356	4440	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\33eed073312dea621896609573b450fc3588a3b87c0d01580942fc4a207f5634.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\33eed073312dea621896609573b450fc3588a3b87c0d01580942fc4a207f5634.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4440
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4356
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3480

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4900

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
b00ac29fc13dbda8bf27df3d5e9d472f

SHA1
305d1f78dce03cee9a5d42114781a0fd91c2438f

SHA256
8d1f187c6b502b63b488fa6c09a96b9e04f4543cdf4fda487ef09f5d54d5bdfa

SHA512
b436c75bfd0cb99c8d148978eaa637235913abb912c2335afef8d3cae2d702a688839a672aad2cb0694254f83fac092c960a7385a69cdca1f0857f7e81ab5ede

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
b00ac29fc13dbda8bf27df3d5e9d472f

SHA1
305d1f78dce03cee9a5d42114781a0fd91c2438f

SHA256
8d1f187c6b502b63b488fa6c09a96b9e04f4543cdf4fda487ef09f5d54d5bdfa

SHA512
b436c75bfd0cb99c8d148978eaa637235913abb912c2335afef8d3cae2d702a688839a672aad2cb0694254f83fac092c960a7385a69cdca1f0857f7e81ab5ede

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
b00ac29fc13dbda8bf27df3d5e9d472f

SHA1
305d1f78dce03cee9a5d42114781a0fd91c2438f

SHA256
8d1f187c6b502b63b488fa6c09a96b9e04f4543cdf4fda487ef09f5d54d5bdfa

SHA512
b436c75bfd0cb99c8d148978eaa637235913abb912c2335afef8d3cae2d702a688839a672aad2cb0694254f83fac092c960a7385a69cdca1f0857f7e81ab5ede

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
66e0a6be9cca0a982107306168b62a1f

SHA1
129af8a4a95fa5641c3f1fb060986cfad3c14c1f

SHA256
9815f51f6ec415b1fe99ed0fb05841c947cdd52c626e4a96d6d4c01594b5d247

SHA512
4ab571c66169423cf53be4b5629e8f72f128f72f63be30084c756a64bf3f9a0d681aceba326cc9df37694e831112305a22401e2a08e7c15059464e265e42e891

Download Submit