wannacry | 154f4f786c332668051cf43aa48639129316f418a8576842cf2841984555cf72

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 10:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ef94900545e4a455081c70c5e780fecc_JaffaCakes118.dll
Size

5.0MB
MD5

ef94900545e4a455081c70c5e780fecc
SHA1

5767fc1c43a42a3e020c26d4ba76cb33827f782d
SHA256

154f4f786c332668051cf43aa48639129316f418a8576842cf2841984555cf72
SHA512

fa6d27b66206dc57d2b38a544442536159f2b37186a5ee1e7f7517295acbad26c8b1e172689caff28bf16ca3473627c322bcc264b79d03438c2d275dfa72f896
SSDEEP

98304:+DqPoBhz1aRxcSUD/Nj9msGxWa9P593R8yAVp2H:+DqPe1CxcxN9msZadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3255) 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
2252	mssecsvc.exe
1276	mssecsvc.exe
5032	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3604 wrote to memory of 2988	3604	rundll32.exe	82
PID 3604 wrote to memory of 2988	3604	rundll32.exe	82
PID 3604 wrote to memory of 2988	3604	rundll32.exe	82
PID 2988 wrote to memory of 2252	2988	rundll32.exe	83
PID 2988 wrote to memory of 2252	2988	rundll32.exe	83
PID 2988 wrote to memory of 2252	2988	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef94900545e4a455081c70c5e780fecc_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3604
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ef94900545e4a455081c70c5e780fecc_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2988
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2252
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:5032

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:1276

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
a2813ecbc617827612128847085db806

SHA1
643e4cb025b8fb6b6e7d8d3bed44294ccdc09e13

SHA256
260739932a53cc3ea15c458c545f2b09ef7880379ef111c5626f58f72df8b364

SHA512
02e907596f07e863226f1b4f657ec782f617dd41bf88ae995d64630108b2f855ac65b7f57a122bd736ecffb4537d324de74f48bd047a3933dc43f6e6375f29a8

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9a23902978100b37fc7e286c43dde290

SHA1
77484b1b1680088f530f056eee2f1c287cd0dc2f

SHA256
eb57e1a987cfd6f90c6f23fa5d44f6f83c104370e5cef61f630ad4a3135b6571

SHA512
a6efe7798214fad1878c6ec5ea4dd9f6a145fa356dbcd807968f4755c933eb2d35c7e14e03e360c98dc9e2ee0ecacb58de2131d282a67bf6e252a7f13a4e4ee5

Download Submit