wannacry | beb70ad86f877107e7a14d3e65f1ae07c4c77f6c18ed62faa73169a089df8c0a

General

Target

2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Size

5.0MB
MD5

c5f54d50773618dbfc34f234c86d8b7e
SHA1

cee1cf8b0be1fde8e46825166a2226826dd4c63e
SHA256

beb70ad86f877107e7a14d3e65f1ae07c4c77f6c18ed62faa73169a089df8c0a
SHA512

5c6a822b622f2fa2f912bd275819ae3bc2a6ae5a8f9677cd45f7bdd02592db1ed6749a170262962b1289c788b0f39da8657423226fb83f61bc5ff54e9a61793c
SSDEEP

49152:QnpEKUacBVQej/1INJx+TSqTdX1HkQo6SAARdhnv:QpyfBhz1aJxcSUDk36SAEdhv

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 (3000) 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
2796	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\History\History.IE5	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\tasksche.exe	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240647437	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	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 2796	400	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe	88
PID 400 wrote to memory of 2796	400	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe	88
PID 400 wrote to memory of 2796	400	2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:400
- 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:2796

C:\Users\Admin\AppData\Local\Temp\2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-28_c5f54d50773618dbfc34f234c86d8b7e_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3728

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
b97c4cc79c438fc0b49b30e5402763d8

SHA1
8e313b4b82545597fc9fa4997bd450824371e57d

SHA256
f4ff7d973f0d3e2a88435f79ed3a1f8a64550dc2c54e593331f893d08b179e2b

SHA512
fe25be280c06ca3eb621903b6dd834d05e25ef9d7fa8495b8c91e14dc90d21321aefea5e8110865cc628635ce39c276a73778ed897ae97f3f2d7dcd2d0ae7f88

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Analysis

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