wannacry | 95da88652113687e04c2738029485b3169b1d4f67c691a9525db57470205bce2

General

Target

2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Size

5.0MB
MD5

bfe0dc0b375040b43e6a4f5215736af3
SHA1

4746d70bcd976edd34999f8965f14dd4e9205ecc
SHA256

95da88652113687e04c2738029485b3169b1d4f67c691a9525db57470205bce2
SHA512

4857234a550e40b4de1fa39567d858cd583ff4038cc9076e9773f83013151124ebb695944881934c3f0baf2e8b26c8eda396cab8d6cb732e78129297bb3d1c56
SSDEEP

12288:e1bLgmluCti62WfSm0iEcQhfYNVUy7ckPU82900Ve7:QbLguriIfEcQdIVUacMNge

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 (3108) 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
32	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	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240628171	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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 32	4044	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe	90
PID 4044 wrote to memory of 32	4044	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe	90
PID 4044 wrote to memory of 32	4044	2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4044
- 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:32

C:\Users\Admin\AppData\Local\Temp\2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-11-11_bfe0dc0b375040b43e6a4f5215736af3_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2440

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
94aa808a766d1db830139cbbb72663bc

SHA1
ee26f1785ab4d410cd3e7e01acf25b828de66b41

SHA256
ccf092aeaa01c5003e2ce06dac63c527d97593121eedc3030f6b09d26d18b399

SHA512
3e216d27fd2fd1bb3c4b7ade59e4a595ba1d1c90e953b37f26e9da534719471bd4e6458a8600c97354a745f4bb7625019aa0935e47d580b89fbb881f1290d43a

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