wannacry | f6445c6a8137ec33bea9f9d0be33d5a57358d93bf0a5f803f2d09772cccb9460

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 18:56

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General

Target

6bf20cfa4ba80e648542102fb81914f4_JaffaCakes118.dll
Size

5.0MB
MD5

6bf20cfa4ba80e648542102fb81914f4
SHA1

9bc1ce68754127c6981ae6d4f0b496ef12d98ca8
SHA256

f6445c6a8137ec33bea9f9d0be33d5a57358d93bf0a5f803f2d09772cccb9460
SHA512

9a9440b7d44ce79cc26f022e1d641e18ff9e52fe97229465531aafeb4f6127daaa8c42d796b4d7ebe5524ab4ce5f3f7aa468381a132d8c0de7e337155a3a38b7
SSDEEP

98304:TDqPoBhbxcSUDk36SAEdhlxWa9P593zp2R:TDqPCxcxk3ZAEaadzz4R

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3301) 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
4444	mssecsvc.exe
4996	mssecsvc.exe
1776	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\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 2116	1788	rundll32.exe	82
PID 1788 wrote to memory of 2116	1788	rundll32.exe	82
PID 1788 wrote to memory of 2116	1788	rundll32.exe	82
PID 2116 wrote to memory of 4444	2116	rundll32.exe	83
PID 2116 wrote to memory of 4444	2116	rundll32.exe	83
PID 2116 wrote to memory of 4444	2116	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6bf20cfa4ba80e648542102fb81914f4_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6bf20cfa4ba80e648542102fb81914f4_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4444
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1776

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4996

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

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
44f09253b9216e4e04beddaa89f73d8f

SHA1
e46471de8a0e97151333799bffbf84c6e58eb185

SHA256
85648e5aa9a3d437918ae146a46bb076d1d8aee30dc61db191a44d4fc61a91b8

SHA512
8b8d8e55ed93e737bd023eae6a42cc32c0d1099e049719cba09f4eccdb50648293f1173f676631873c61ce99d28a5206583173c7dec4942aade8678cc78c636d

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
ad84fae2599defac30e2271bf9509e7a

SHA1
b91f077d4d5c9e03da30a795047dcc252013767b

SHA256
7ca5828c9e097bbb34b736778e9e91a54bd2b91486ceb17848a5aaff5bab3eed

SHA512
dfe8aaaeaf143fa11082dde1d930a483a4ae151a35be197f367ac8e0e827b1ca6e392aa3d1112b2735c46374ccb9cacd7dc720b102b0b6c8ebc07a8cde0374db

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