wannacry | 4c44d1c79e5f6f15d7dd3416f79e4fadb669c32615ab234767b506a8116e44f0

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
07-07-2024 22:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2a13081acf353142a3e792683520cfaf_JaffaCakes118.dll
Size

5.0MB
MD5

2a13081acf353142a3e792683520cfaf
SHA1

9ced5f6260a5b508a6226693936a7d8f2308db27
SHA256

4c44d1c79e5f6f15d7dd3416f79e4fadb669c32615ab234767b506a8116e44f0
SHA512

ab9cee7fa2c4ee3a58031a82ea275c13d72a0399c2cc889170715e334cff8760be7fd8ee90a77128cdacbf4c6f3538f391f5c9d595653be24cfa0dacb947a210
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9QztaXX83R8yAVp2H:+DqPe1Cxcxk3ZAEUaiTR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3198) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
4012	mssecsvc.exe
4508	mssecsvc.exe
4180	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 Discovery
T1046

Drops file in Windows directory 2 IoCs

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

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 3360 wrote to memory of 1592	3360	rundll32.exe	82
PID 3360 wrote to memory of 1592	3360	rundll32.exe	82
PID 3360 wrote to memory of 1592	3360	rundll32.exe	82
PID 1592 wrote to memory of 4012	1592	rundll32.exe	86
PID 1592 wrote to memory of 4012	1592	rundll32.exe	86
PID 1592 wrote to memory of 4012	1592	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a13081acf353142a3e792683520cfaf_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3360
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2a13081acf353142a3e792683520cfaf_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1592
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4012
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4180

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2d017fa037d287f94f1441f3d4d829df

SHA1
5229f06ca64a98db0757b190714183ef22af5075

SHA256
f6fac3c066c00e6ced8218011777b37e571112f23e6c66658519b7cccc1e1311

SHA512
5b127b1d6732f8e3e546a314b063f2ecd3e4ad41c5b27fcc7485e505102ea510aa2e45617309801837aa7f8a2a07c8bcc490d0cfca2ededa8b20256a5d8a25a9

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
507c3ed8112cb4a3b12b09b7aa484c5d

SHA1
0c133073d2476ccdd3f7e8fa97301d0cc1cfc81c

SHA256
8ad2f1dcc862074a83f4d34bc3653f59374a7375a74e661787c755bc2fe2ea54

SHA512
56adc50ba97e83e324381e952f88825c68145a29f0fe12fc5f7a47d874849d0e953a68c2be658e527394c005cc4850b5e492f781e7a6f44245b3d91b5212662b

Download Submit