wannacry | 5daad8d4baee8e1ab6732095cf818e70352a420551eb194c19703fc1b92c58f3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-09-2024 02:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

fd976b085ff92b83ca0ab285e359a80a_JaffaCakes118.dll
Size

5.0MB
MD5

fd976b085ff92b83ca0ab285e359a80a
SHA1

323b1b8166b7bce110785efe64913729a488cdd9
SHA256

5daad8d4baee8e1ab6732095cf818e70352a420551eb194c19703fc1b92c58f3
SHA512

d6f2e80ebd6a32a967355a476bb25812e464be2b918830a590be8646d67c5a79f284652bdcc920f5e1f8f87ac500d1fc1f0938713d15ee8dd38cfc872d27db32
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8L:+DqPe1Cxcxk3ZAEUadzR8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3350) 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
1748	mssecsvc.exe
3836	mssecsvc.exe
3528	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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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 1180 wrote to memory of 712	1180	rundll32.exe	82
PID 1180 wrote to memory of 712	1180	rundll32.exe	82
PID 1180 wrote to memory of 712	1180	rundll32.exe	82
PID 712 wrote to memory of 1748	712	rundll32.exe	83
PID 712 wrote to memory of 1748	712	rundll32.exe	83
PID 712 wrote to memory of 1748	712	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd976b085ff92b83ca0ab285e359a80a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd976b085ff92b83ca0ab285e359a80a_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:712
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1748
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3528

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
25fd1bb236666d54bee64fb2ad074d53

SHA1
5aff71b3a67bad5d783bd26013b91a2692cd7886

SHA256
34d199b192b5deb4794c35039781566874326afb544114249eba26e9c742c524

SHA512
f92893c312f87290ea65b9581eda054786e61a32e6cbbc1092c947b1aacee01e9c645309eb0fbb9c0afb03a38ce289230a6764590a950815069d5413138f8da9

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
59188fc76996c910404a3254b5d2644c

SHA1
bd6e30c2f7c3c66ddda5d7a23f21e267be1464e3

SHA256
39a567c71bbb6d87e38118410d2ee6888581c27226c244b8ba24c78320f7773a

SHA512
51c82dde8e7162b84962724a0c369ebc69a83d1245ba3965649ffe1009c26ecb58b21065cfb720c9a541b3754598cb59b26258fd18ac6a5255a698363dc5c887

Download Submit