wannacry | 1c484121926cf5051c5f81024809e315bd05fcb0308de91848f53f14d69fa3e5

General

Target

2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Size

2.2MB
MD5

640e4d3e3f12e876ae06d9e68c99a308
SHA1

7c8f4f6df1712d6f92642ad4e9a0d25be3eae339
SHA256

1c484121926cf5051c5f81024809e315bd05fcb0308de91848f53f14d69fa3e5
SHA512

0909688bcb042581383990e61264ba36918f3853a69c2185b2e51345cc8e302cb184be3038dee88dc773b29b46c9fa7823365996607e85f16609ab744c249c27
SSDEEP

49152:QnpEjbcBVQej31sNRx+TSqTdX1HkQo6SAARdh:QpUoBhT1+RxcSUDk36SAEdh

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3312) 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
1804	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	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_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	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240625625	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	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_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	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 1804	1672	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe	87
PID 1672 wrote to memory of 1804	1672	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe	87
PID 1672 wrote to memory of 1804	1672	2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1672
- 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:1804

C:\Users\Admin\AppData\Local\Temp\2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-12_640e4d3e3f12e876ae06d9e68c99a308_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:64

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
ab5cb312c3d406a9cf5555d69c6b1171

SHA1
f8852c9908e43d8191e52f83f9198398c0944c30

SHA256
201856e4b338564c9b99502c9edaa6d4dcf98c82095b68630b4f241b4e81b09a

SHA512
b90b95cecd4ed384ed83b754cafff8d4be2110c8fe962def65708b3221f330ca99c2cea81c305c95eb26cdc77df940236cf9ff46d299b159c77f8d0cf1a182a9

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Analysis

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