wannacry | b0c84e080da6571dda21cd6d683bc248f15ad5775842b698d87f4804879fe8a0

General

Target

2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Size

2.2MB
MD5

9e01fd2a74a597ea7f944f9f9b5da875
SHA1

cfd1eb5d55bd2a1fe31b8a564b3d0198a76f7f23
SHA256

b0c84e080da6571dda21cd6d683bc248f15ad5775842b698d87f4804879fe8a0
SHA512

b05e2ef86e60d900c38ade78c64a920fd9d093aafd76690a9ca0a8c5c6931f521189d8dc31b50c4c3aab51f374c3056974a2f6fdf4c3cd3eb63e6da357578f8f
SSDEEP

24576:QbLguriIfEcQdIYrYbcMNgef0QeQjG/D8kIqRYX:QnpESbcBVQej/1i

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 (3257) 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
4984	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\IE	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240623437	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	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_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:"	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 4984	2376	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe	83
PID 2376 wrote to memory of 4984	2376	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe	83
PID 2376 wrote to memory of 4984	2376	2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe	83

C:\Users\Admin\AppData\Local\Temp\2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- 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:4984

C:\Users\Admin\AppData\Local\Temp\2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-15_9e01fd2a74a597ea7f944f9f9b5da875_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4468

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
ca994e565883f94dbead8b45c32cc9fb

SHA1
3bbfa74e73f792a2461471a51cd167dfc29bb445

SHA256
a55051bcc6b2741f3d0660b5c8029141c23d653aa9b90a75f57ee448f34aa438

SHA512
2eacfd41134023c2be9329cc7a3f5c3ff81ac91984da92d4e0ab373eb7119a07bb6b148640d1342b9c7e90bf1496ff6a8f2bc35bd7541a40adebe07ed4538804

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