wannacry | e52a4ccbcb4355dabab5db1006f232420bbd735886347788ef29682865c6fef4

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
15-09-2024 01:47

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General

Target

e177cdb4e594393b747d46b74b31cc19_JaffaCakes118.dll
Size

5.0MB
MD5

e177cdb4e594393b747d46b74b31cc19
SHA1

c43c50fc6adf885b43ab3113147373ae3526e93c
SHA256

e52a4ccbcb4355dabab5db1006f232420bbd735886347788ef29682865c6fef4
SHA512

78802d8bda1be78dff7a5590bc0362b4252ebe02b4befbe4093ad43f6c750966e35266d3820ac721216154a878213a91351c88a841172f69eb9b8eab93af5da8
SSDEEP

98304:T8qPoBi1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:T8qPJ1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3213) 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
1428	mssecsvc.exe
4100	mssecsvc.exe
2304	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 4268 wrote to memory of 876	4268	rundll32.exe	83
PID 4268 wrote to memory of 876	4268	rundll32.exe	83
PID 4268 wrote to memory of 876	4268	rundll32.exe	83
PID 876 wrote to memory of 1428	876	rundll32.exe	84
PID 876 wrote to memory of 1428	876	rundll32.exe	84
PID 876 wrote to memory of 1428	876	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e177cdb4e594393b747d46b74b31cc19_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4268
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e177cdb4e594393b747d46b74b31cc19_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:876
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1428
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2304

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4100

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

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
e7f918509969e2341d145b92e6d2ef50

SHA1
17effb161083eeb468850dce80408b4f229f9297

SHA256
092b88f8eca76534498feb06d60c12814d5acb6047ad700655e83a0c281325e7

SHA512
7155cad4e893fdab64ac8d46caec95207065ce525487752b1130bc7c402587f8396ace3afdf38d124836eb129dcc8ddf57f613e1dc90d08bac76492669800305

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7d9c28f3901927758f1f6ed29d642dc5

SHA1
eae0c49d2e2e0d431d5f019290aa7739642b5172

SHA256
b912666d2c157e67c6d270da86c8eeff4da5b2e05dd1bc2cc5fe30425ffcbc64

SHA512
e0931d3f3a0a26ba4a45410819b4e2fbfa7ea730d02a5efbe6e215bb0c65e6f213a08a9b14d2bf63948192d8a8b7aa108558c2d7f04d2db789e1b0a77c9cc446

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