wannacry | 1aa4496971bd82e55bb830b7283423487becd1c73d0ea6ce2aceef3cfabb1eb7

General

Target

2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Size

2.2MB
MD5

15d8410659fe6da185de97180cbbc78d
SHA1

57acc5789902311059f6da41c4d42c895f6c5147
SHA256

1aa4496971bd82e55bb830b7283423487becd1c73d0ea6ce2aceef3cfabb1eb7
SHA512

6e855ce189e2f71d788021cca26e83f012159a05e989eebc6fc54fc2ee7a79ba657833cbf0334bbbb16d1d5e05e8d2b473a8b7006c7643ac16fc559f3b55518b
SSDEEP

24576:QbLguriIfEcQdIVUacMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXmi:QnpEKUacBVQej/1INRx+TSqTdX1

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3261) 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 1 IoCs

pid	Process
2028	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 System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\__tmp_rar_sfx_access_check_240614625	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\tasksche.exe	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.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	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 2028	4000	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe	87
PID 4000 wrote to memory of 2028	4000	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe	87
PID 4000 wrote to memory of 2028	4000	2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4000
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:2028

C:\Users\Admin\AppData\Local\Temp\2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-10_15d8410659fe6da185de97180cbbc78d_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
2bbd3ea1986a2bb0eec16a23cbcfb775

SHA1
19a28b540e9c4caa896c0f9775a238fd86c9b7e2

SHA256
7d8626c4f4f5865002cc72b23dbbb6e99712864a19d0f0013325393ab625ef4f

SHA512
e2956ca558dadee6448618ab8c7bd8917228572a8bc6aba77bc0e42cd41042d40690090aaaeff718268fcc95233ad4546cff30b588e49e8e828f8e6988fbd020

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Analysis

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