wannacry | a56e5450cf34d7491bebf4c8232e8f6a5f46a3bab293129cc24c843369102c72

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-11-2024 01:19

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a56e5450cf34d7491bebf4c8232e8f6a5f46a3bab293129cc24c843369102c72.dll
Size

5.0MB
MD5

aa62c5bae918f4d52c52a32fbc27f0a9
SHA1

3c337bfc1f06bd236a2a19b583d09980f4af076a
SHA256

a56e5450cf34d7491bebf4c8232e8f6a5f46a3bab293129cc24c843369102c72
SHA512

50863f4a5047492bb7b271beee9a4b499d6d33c26f696caa207025c42a39f701db244bf4c17cb9c428b766a6db0c063ae62d2af3058119b6a7ab92940c204b03
SSDEEP

98304:TDqPoBhz1aRxcSUDkn6SAEdhvxWa9P593R8yAVp2H:TDqPe1CxcxknZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3172) 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
1888	mssecsvc.exe
2324	mssecsvc.exe
3776	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 3872 wrote to memory of 3796	3872	rundll32.exe	83
PID 3872 wrote to memory of 3796	3872	rundll32.exe	83
PID 3872 wrote to memory of 3796	3872	rundll32.exe	83
PID 3796 wrote to memory of 1888	3796	rundll32.exe	85
PID 3796 wrote to memory of 1888	3796	rundll32.exe	85
PID 3796 wrote to memory of 1888	3796	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a56e5450cf34d7491bebf4c8232e8f6a5f46a3bab293129cc24c843369102c72.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3872
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a56e5450cf34d7491bebf4c8232e8f6a5f46a3bab293129cc24c843369102c72.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3796
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1888
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3776

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:2324

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
a1f604a8258ca8df0d4466fdc6b71ded

SHA1
4ee04369b4bef78d37adfec37e01227bc2766572

SHA256
8cee9ce56f1a958d285d34c03cd47e1b3fa15b27dd142994f992e7b837981500

SHA512
43b00f08a21bc7bf074d839ad1c07aa2cdc16c08a4f9557e9dc70bafe97bd5dc52d88f9902b3fc3b6c2c7cefcaf610f860e9e23bd833e6ab8098e400b8d62162

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
be9858384a5352c00667fccbab091bc2

SHA1
2ffdef1cd77c680cd6b38390e29a8d1044cc51c0

SHA256
181ed2fbf4f2ed4fb186faf5d15b05e342e8f24ba5d9b7cbde786a1e70b0ca27

SHA512
ff520c4587fb44e34e92dc437c6221ce421c178e76a5f9a52826e8dd289e372d3b8ca778160efa35ebd104b32d5ce2467f549edf75aa28293fa0c736bcbec5ad

Download Submit