wannacry | a4081b1c94bd2e5474e1db4f6d7b4e42f5d7c9a23350ecb61859a3cc230eb21b

General

Target

2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Size

3.6MB
MD5

7e3ae9f17ee2faf575557c65e165da3b
SHA1

42194072a50511ae70aebbd925312c1200f4a385
SHA256

a4081b1c94bd2e5474e1db4f6d7b4e42f5d7c9a23350ecb61859a3cc230eb21b
SHA512

8055f2f8a7b736761355cbaa7043917950b6c33635ad643aeddc697f7b433abd88397bb721d6491be972df6aa355582d34bd841695cafe7d8a8eed1d6cfc9855
SSDEEP

49152:4npEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnKAH1plAHI:opyfBhz1aRxcSUDk36SAEdhKAVp2HI

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 (3349) 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
3192	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	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240625093	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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.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"	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 3192	4128	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe	84
PID 4128 wrote to memory of 3192	4128	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe	84
PID 4128 wrote to memory of 3192	4128	2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe	84

C:\Users\Admin\AppData\Local\Temp\2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4128
- 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:3192

C:\Users\Admin\AppData\Local\Temp\2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-10_7e3ae9f17ee2faf575557c65e165da3b_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2488

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
82cde1a2097ed55562378bd3023e9635

SHA1
359d68bbb32fca010a47b3767b15b4c9ab454f46

SHA256
42b1c2d49c3b0e5d89eed8352ede79253a8db2121f251d9db54075a3a5f5ab15

SHA512
b4fec94938f71e66a82aa558c12dd896efb6fa3448a299ff99c5e84f27765e246210168fde082fbb22fc794f9a23f7a6be2c1d22132c05921137a3f3c42a5327

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Analysis

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