wannacry | 6047c58757dba0b446e56f27f2c32a6ff87a56b8e4c63d5798a1c5ff4a582542

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
31-08-2024 09:11

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General

Target

cc891b7ffdd5b65b3c09fefa79771478_JaffaCakes118.dll
Size

5.0MB
MD5

cc891b7ffdd5b65b3c09fefa79771478
SHA1

10ff3945eb3b1e83b687303c3969ee0defada423
SHA256

6047c58757dba0b446e56f27f2c32a6ff87a56b8e4c63d5798a1c5ff4a582542
SHA512

f32c11dfd9fb0ef0bab628457d1d3e67bd64b139cabf19fe74044cd6ab432445a2a53ce98f845e1f21a5a233c9eb648f3ad3230caf88fbf64faf3dc30cacdbf7
SSDEEP

49152:znAQqMSu+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEcaEau3:TDqucSUDk36SAEdhvxWa9P593

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3134) 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
3620	mssecsvc.exe
4808	mssecsvc.exe
2132	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\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 1588 wrote to memory of 2288	1588	rundll32.exe	84
PID 1588 wrote to memory of 2288	1588	rundll32.exe	84
PID 1588 wrote to memory of 2288	1588	rundll32.exe	84
PID 2288 wrote to memory of 3620	2288	rundll32.exe	87
PID 2288 wrote to memory of 3620	2288	rundll32.exe	87
PID 2288 wrote to memory of 3620	2288	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cc891b7ffdd5b65b3c09fefa79771478_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cc891b7ffdd5b65b3c09fefa79771478_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3620
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2132

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:4808

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
aeccfe573224cb1bdd2001f5fb4c960e

SHA1
e9a085c4f5bf11d78b31064f0c1a6fc3eea51bf6

SHA256
875865da96ec452ce8a7d5eb18ae4cd034037f1ec136b8c9dabb809f8b1bf95c

SHA512
924750a346db877f38f22619a59673a354d70113320581c5ca20fe506fc70c2aab9817621c0e4bab3eedf4139627c2cc63e9cea701bcfd72b3162e9bf05b1b51

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9bfb4e442eb75eadd48c617bb936b1ba

SHA1
9ba3b35b881a4e8555de4346e6a6f6fde7fc4ac7

SHA256
57b04e5d1f6953eecf8378a7d3306460bcfcfe83f185ff22e8a8596b27b368b8

SHA512
d63a9787876c42b6106be55755fc0a194554b1911255f57a0db61ef59610e9327c47c2fc4d5298b09e5e2e0a38d2987671c8fe4e339a82ce8c7ff89016f236a1

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