wannacry | c9c9b6ef41fe30ee27e4db47dfae922caba6fff8607be583eaa5806ccf580e9a

Analysis

max time kernel
31s
max time network
43s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 23:20

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Reason

Machine shutdown

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General

Target

f70e6864c0f69af828634172ceeb1b24_JaffaCakes118.dll
Size

5.0MB
MD5

f70e6864c0f69af828634172ceeb1b24
SHA1

45c3edea88fd5833e94d1a76d9445b2206f70ff4
SHA256

c9c9b6ef41fe30ee27e4db47dfae922caba6fff8607be583eaa5806ccf580e9a
SHA512

2527d307fd88bf903c06cd39df264447c6bd1e08a045f7e9d9ccc3f75e525f703a3a8049f13402f84e5bd594dabef2a2f3305231b487da5903df40dac0dd5eab
SSDEEP

98304:TDqPoBhz1aR36SAEdhvxWa9P593R8yAVp2H:TDqPe1C3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

Executes dropped EXE 3 IoCs

pid	Process
4124	mssecsvc.exe
2828	mssecsvc.exe
5100	tasksche.exe

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\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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 704 wrote to memory of 4488	704	rundll32.exe	84
PID 704 wrote to memory of 4488	704	rundll32.exe	84
PID 704 wrote to memory of 4488	704	rundll32.exe	84
PID 4488 wrote to memory of 4124	4488	rundll32.exe	85
PID 4488 wrote to memory of 4124	4488	rundll32.exe	85
PID 4488 wrote to memory of 4124	4488	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f70e6864c0f69af828634172ceeb1b24_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:704
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f70e6864c0f69af828634172ceeb1b24_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4124
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:5100

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:2828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
d7c53159a9be736f64c801858e086e91

SHA1
c6f507cfcee76480154be99e86d485d423f0bc63

SHA256
7f1aa4b11731893952b0acee3647c2eb49e07dbbdffd552cea5a49ef6855d5a9

SHA512
3e29725436b217130aabd0935b92027c089e8d1c36a5868b0df143b6b23304c7343758765cc6c4a346b19fb5add8843412c874f06c8e7b192a8358e90e999760

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
bf62a0c4a3450f4dabf8961f206d5a58

SHA1
33ce557422d55a43aff9bd55bbdd241659aab777

SHA256
4d2ad85e1333b909d8cff55e8ff8dd87b94a5c4206d9bee128c88691056dd40e

SHA512
554d5c18f0ca0a4164567eb45b95295ad76996aa7a931f8bd78e868853accc21cb6940170ed3c7703cc2088d0106017ea529393de1cab1dba714103ebe96cea5

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