wannacry | b550226d6fce736f1f0f0593e40d0453067b734582a57b6ed214c8116e272f1e

General

Target

2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Size

2.2MB
MD5

62d38138d9c1e32394f206840c57123e
SHA1

ae655d701c02be7d9a04f7f6297ea05f04b73785
SHA256

b550226d6fce736f1f0f0593e40d0453067b734582a57b6ed214c8116e272f1e
SHA512

440d88a9efe4d3a1edbfea21ab88a5d3435c6fd7b1d2200d4fb62d0abd37b8079ed30dcb5e0c7fcd6e6ba70ae54dc6f99c636438d5aad60c359448f0072c48cf
SSDEEP

49152:QnpaSPbcBVQ7/1UNRx+TSqTdX1HkQo6SAARdhnvn:QpJoB81mRxcSUDk36SAEdhvn

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 (3167) 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
4812	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	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240624734	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	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 908 wrote to memory of 4812	908	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe	84
PID 908 wrote to memory of 4812	908	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe	84
PID 908 wrote to memory of 4812	908	2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe	84

C:\Users\Admin\AppData\Local\Temp\2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:908
- 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:4812

C:\Users\Admin\AppData\Local\Temp\2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-29_62d38138d9c1e32394f206840c57123e_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3036

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
6d446e88ba759d46e3d1560026b221c6

SHA1
566861589d8b6001884c65c509f514eaf348ad00

SHA256
2313bfe44bd5e6f9e48f9f91c15f1031584cafb7b8d068bed20145bebbed2d62

SHA512
26c2052d72f88b89f011656b944320ea47c8102c2bd525506c164c2ea5b427edc0cf4ae63d7bd403d66bf7066e18ecfeab772e19334964e0a48fb8af497c38f4

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Analysis

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