wannacry | a33fba9aebff0bec7ab06ec1236c37e642b74dd64ef6e60d560da946be82f9b0

General

Target

2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Size

5.0MB
MD5

555d7a1ce5cb7e11ddaa97a878636483
SHA1

626b44e962d4ffcdf06bedf8691f9b0ca6754e1f
SHA256

a33fba9aebff0bec7ab06ec1236c37e642b74dd64ef6e60d560da946be82f9b0
SHA512

3dbeeadf1a4ec3ef4416e6a849fbd5040e79f16c41001cf82b23bd2d73cd7f756877d875b1754c80a98ff6a640f5927c2b16515f9a05b014bc8325cf3dc40495
SSDEEP

49152:QnpEjbcBVQej/1IQSqTdX1HkQ86SAARdhnv:QpUoBhz1jSUDkH6SAEdhv

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 (3203) 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
2564	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_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240645562	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	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.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\Content\CachePrefix	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2564	2604	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe	84
PID 2604 wrote to memory of 2564	2604	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe	84
PID 2604 wrote to memory of 2564	2604	2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe	84

C:\Users\Admin\AppData\Local\Temp\2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- 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:2564

C:\Users\Admin\AppData\Local\Temp\2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-02_555d7a1ce5cb7e11ddaa97a878636483_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4728

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
c5a8a88d8c4593892d9172e6e724e67c

SHA1
a3b667bcb3a151b79bcad2f29bce23c395d9033b

SHA256
a10de1ef80b581f360527ae4c16112e3a282ac6540db7f2775bf79179ac31e0b

SHA512
19235bb36f1506da039e85adff8a465799f9bd07f8f70bbb8861587e67833c1c554172a264521a4dfa1cb3a320c50017711d307024f722ae1f0739ab8d85a222

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Analysis

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