wannacry | 536d57cc6472a9464de16f0b875fa3884a7bdbb3cdfbfc2391cc63698d93403f

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
30/07/2024, 22:59

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General

Target
7a60943b74e7d36a2b1b922f07432a83_JaffaCakes118.dll
Size 5.0MB
Sample240730-2yn7wsyaka
SHA256 536d57cc6472a9464de16f0b875fa3884a7bdbb3cdfbfc2391cc63698d93403f
MD5 7a60943b74e7d36a2b1b922f07432a83
SHA1 a037d09259b42f0d8da5ee0cf3e0a53d994506e0
SHA512 f466588c3862d9bf5bbe8c32f4e5daa7df9a3e22abcc83cc07c1b88a5026f19594a14f84758025f6204bf8329300053ce6817b9765419bc601296089f7120b08
SSDEEP 98304:d8qPoBhz1aRxcSUDk36SAkhu3R8yAVp2:d8qPe1Cxcxk3ZAzR8yc4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3157) 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
3080	mssecsvc.exe
548	mssecsvc.exe
1536	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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1420 wrote to memory of 1832	1420	rundll32.exe	81
PID 1420 wrote to memory of 1832	1420	rundll32.exe	81
PID 1420 wrote to memory of 1832	1420	rundll32.exe	81
PID 1832 wrote to memory of 3080	1832	rundll32.exe	82
PID 1832 wrote to memory of 3080	1832	rundll32.exe	82
PID 1832 wrote to memory of 3080	1832	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a60943b74e7d36a2b1b922f07432a83_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1420
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7a60943b74e7d36a2b1b922f07432a83_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3080
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1536

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:548

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

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 ab3d3940cb490414874db8b24d670390c22c99966c3d15cf2cb7bd1342032bf3
MD5 21c6f57c2537b69b693692525a9a9b7b
SHA1 e16591bad0302a8d67a1088f49939fa63df939cc
SHA512 01e1b44f691c8a4d7c84100bf2ed01bee0df96f9d7e1209aac4aa7c72738cc9d0e208a6533284498860af9fd9cca001349c4268d58283679e2e2e5d8688f7236
SSDEEP 98304:Z8qPoBhz1aRxcSUDk36SAkhu3R8yAVp2Y:Z8qPe1Cxcxk3ZAzR8yc4Y
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 49e85257359b97b88df921b8dcd81c2c285b3bd746016c85a94dd35d5e609085
MD5 8812b0e876464ebe1e95a2c3ce33ab86
SHA1 4f2e2c0314381fada60acd6906c6d496f29a9570
SHA512 d6619145dcaa8131b7200a4cde1eec7b5d708fc3fa1334d229a28e6e70a018323c9e15f66fd4e06b151d9a367d258d2263548a050bde57bae462f631377ac8d7
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAwq15qoJVKbEQ72gTLWw2iD8ZCEau3R:QqPoBhz1aRxcSUDk36SAkhu3R8yAVp2T
MD5 SHA1 SHA512 SSDEEP