wannacry | 7f9602d5d8f356451ef51f02ac75e769d19ef3ac9317d78944ead84b4ad7384b

General

Target

2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Size

2.2MB
MD5

903b6dfdf020ca110c88581c56288370
SHA1

46bf8c1dda2434732673d2945e4fff0d7bbcb56f
SHA256

7f9602d5d8f356451ef51f02ac75e769d19ef3ac9317d78944ead84b4ad7384b
SHA512

4b348f3c1061d9929884bd9b9275dd08db4be7b53ba680b537af0440245be7c8e701633e6e7aab8f11e765ec86e47e42eb09c4da362c85a6cb6030309cc8d780
SSDEEP

49152:QnpESbcBVQej/1INgwuqzgX8knK4JKARp:Qp1oBhz1ay

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 (3295) 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
700	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	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240616046	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	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-02_903b6dfdf020ca110c88581c56288370_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\UNCAsIntranet = "1"	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4500 wrote to memory of 700	4500	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe	85
PID 4500 wrote to memory of 700	4500	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe	85
PID 4500 wrote to memory of 700	4500	2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe	85

C:\Users\Admin\AppData\Local\Temp\2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4500
- 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:700

C:\Users\Admin\AppData\Local\Temp\2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-02_903b6dfdf020ca110c88581c56288370_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3456

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
a0f8477d839867c0d7045cab8a43845f

SHA1
06fc0cdee0addc2f0b48364e53d5f6a607528747

SHA256
0d69f53b2d099b27e586ca2a32a9ada0bd6ce934eab0f0a833eeeda2d86531d5

SHA512
14443a530c993b3c29180f8c86adaad25860810f471ecaec5d8008b0daca0842e126c01f595805d98f9b613e5cf02bb589cb9d25405d01de7cc6b3a10030d321

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Analysis

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