wannacry | fe9714ae9d6622ae802ccee03f8f420a7639bc2944b4a5e41bd4d322ea229861

General

Target

2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Size

2.2MB
MD5

4a0282c787e834797637faa0ead6594a
SHA1

24819c00021a2186419ec29bce834fc35a1ecc46
SHA256

fe9714ae9d6622ae802ccee03f8f420a7639bc2944b4a5e41bd4d322ea229861
SHA512

33ab13570df074b089544413e00ca231195668cca89e5938ac0c1b414517d3c0eaf961604200c637d28f280c248c5923515b9ca796bec9fef454cae906e7e790
SSDEEP

24576:QbLguriIfEcQdIVUv5PwxhrWYK+ef0QeQjG/S:QnpEKUv9wC7+VQej/S

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3153) 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
2252	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	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240629828	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	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_4a0282c787e834797637faa0ead6594a_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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 2252	220	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe	87
PID 220 wrote to memory of 2252	220	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe	87
PID 220 wrote to memory of 2252	220	2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:220
- 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:2252

C:\Users\Admin\AppData\Local\Temp\2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-12_4a0282c787e834797637faa0ead6594a_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1496

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
ffb90d9106ca2ab70da030cb26f8c7dc

SHA1
79c118b0592b03ca520bf1974175ae8bbceaa0ee

SHA256
5f33a31539e5d9b404ff030e5608973881a89a3659cd3041de090ea09a9dd0a6

SHA512
5f08a0511477d36a1cd1b5688f2bb4d9eaa930203f13f87edc13c6285b41cc697c76264f7fcfe440a883e741c1fa812eca722d0775eef0d6df9e8955a216dc15

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Analysis

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