wannacry | 2a31d9bf3ac6f5793211109a07bf8e2472b81631846f2140a48fd593f4687682

General

Target

2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Size

5.0MB
MD5

0e915dd8dcf9b5cc4ea8048dc549f21c
SHA1

c6d25e417bce832513f4ea196d773421db2e1534
SHA256

2a31d9bf3ac6f5793211109a07bf8e2472b81631846f2140a48fd593f4687682
SHA512

d67d047937651b7622c294b0fa235ea0186f8efb686f37cea03793f44f3e39d80b272d4f3ba37bc25c5d3dd0c58fab12af20ad192b0734bad2e8342a3985c6a8
SSDEEP

24576:QbLguriIfEcQdIVUacMNgef0QeQjG/B8k:QnpEKUacBVQej/

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3283) 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
1276	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\History\History.IE5	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\__tmp_rar_sfx_access_check_240625750	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\tasksche.exe	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_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	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 1276	3412	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	83
PID 3412 wrote to memory of 1276	3412	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	83
PID 3412 wrote to memory of 1276	3412	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3412
- 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:1276

C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4384

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

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
6301130c98d0c14a955922c51688f39b

SHA1
d83de50bae425bc206b5e5f5ab30996b7057fbd7

SHA256
5b6ce28389464a4c76a0c5cb43ab0e3eb038819c6928745a1e7e965140296b9f

SHA512
eb6139c92f56acc613e27271b0e749a09c6c9be0759cc222a55de114d473da9b34a971522f2f28ed7ee0552158fb0c4798f6813f2fe6b7cb9f08ec19f12ef54e

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