wannacry | 5b955991e4d5a58277ef2b1effb6f397c6268caa651c00f2be21aa3559104049

Analysis

max time kernel
150s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20251231-en
resource tags

arch:x64arch:x86image:win11-20251231-enlocale:en-usos:windows11-21h2-x64system
submitted
06/01/2026, 07:32

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General

Target
5b955991e4d5a58277ef2b1effb6f397c6268caa651c00f2be21aa3559104049.dll
Size 5.0MB
Sample260106-jc2xraxpht
SHA256 5b955991e4d5a58277ef2b1effb6f397c6268caa651c00f2be21aa3559104049
MD5 fcd6ad3cf9eeb9e996c0255893b21bcd
SHA1 0c82380bc2060b07a1617a2b46ccd4966ce6127c
SHA512 2ff9bc91da5f1d0357c5f8a43102e7b4757e6c3ccbfafbc1d54f26d6c940d501cbbbb45547d70b410757a14e00c3bf1c721d20580dc9d561c729383048ef0842
SSDEEP 98304:T8qPoBzz1aRxcSUDk36SAEdhvxWa9P59XH:T8qP41Cxcxk3ZAEUadLH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3302) 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
4792	mssecsvc.exe
4888	mssecsvc.exe
1276	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

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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 4272	4916	rundll32.exe	77
PID 4272 wrote to memory of 4792	4272	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5b955991e4d5a58277ef2b1effb6f397c6268caa651c00f2be21aa3559104049.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5b955991e4d5a58277ef2b1effb6f397c6268caa651c00f2be21aa3559104049.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4272
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4792
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1276

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4888

Network

MITRE ATT&CK Enterprise v16

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

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Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 399e79dd8aa0315da8bae7c25e1f95eb8d13f193d3b4cfbb6aabea0588346bf6
MD5 187e784a85cce5de8bc2acf57fc7c379
SHA1 d1b89719c6195b294011f534cd237a7746f9f8da
SHA512 fc39fa0a60622a33a00f9d1b8d086a7cd51a55787a51e40c716d99fd7fb7755be7c99b6e93db431a24d4e110f004f9b6ac2ab8a2b80b4972c88dfa72552cc9a6
SSDEEP 98304:X8qPoBzz1aRxcSUDk36SAEdhvxWa9P59XHI:X8qP41Cxcxk3ZAEUadLHI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 4ff6561ed7cbfbda8de94436c85b0d051d54cd34bfd5328e5f792c3a7fbfa7ca
MD5 ce864cd336161f3d9762497d5614110c
SHA1 4e8d2d3c1c60071ba150839642bcc31cfdb71bab
SHA512 101244ae14a972d4844c5b00519968fb3fd180f85408877d07c655c922b948b89cfc6c11e744e931eb58670c6281c88131a3111464f7a3f4bb15f876e7ea0c1f
SSDEEP 98304:QqPoBzz1aRxcSUDk36SAEdhvxWa9P59XHj:QqP41Cxcxk3ZAEUadLHj
MD5 SHA1 SHA512 SSDEEP