wannacry | a381770fcff4b6ece363dd134fca5ca63bb3d4165d502f26e5260330530a34df

General

Target

2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Size

5.0MB
MD5

cc05165595dc62e4b43294af4c988e9f
SHA1

e5a7cefcd8ef4a50c44857f660f70ac285380fc3
SHA256

a381770fcff4b6ece363dd134fca5ca63bb3d4165d502f26e5260330530a34df
SHA512

8fe74632913ac1f670e57b6c4691656a80b716b6f853d238c475c360d56c16ecc00ff8e1d8376742aadb26619ab406a8033b0e705bf584408e67090ed3a3997a
SSDEEP

49152:XnpEKUv9wC7+VQej/1INRx+TSqTdX1HkQo6SAm:Xpyv+Fhz1aRxcSUDk36SAm

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 (3174) 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
3272	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\INetCache\Content.IE5	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240635953	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.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	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 952 wrote to memory of 3272	952	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe	88
PID 952 wrote to memory of 3272	952	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe	88
PID 952 wrote to memory of 3272	952	2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe	88

C:\Users\Admin\AppData\Local\Temp\2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:952
- 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:3272

C:\Users\Admin\AppData\Local\Temp\2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-02-24_cc05165595dc62e4b43294af4c988e9f_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4992

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
1829f1d34da98a4ee90cf5ff9bc0b197

SHA1
86e55f10f89a9bdbbb02baf3a24ea731b3b8e806

SHA256
784df66b932f45f29f80a4115a02890e56d2d29701a7099a49d6b3e081f9ddc3

SHA512
2d86533fca4171d88a419a9aa3f50f6f63da315381c5d8fc26a24dbaa8603b79adc543dc6d1d12b9130b80f9ee4fd01bceb5d449065f89c2e2084dc138dd6cf9

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