wannacry | a894b41925b991003059be51033d36a4799b503a071ee6e838b7ffbcfd3c926e

General

Target

2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Size

2.2MB
MD5

16b9f1d317cdf9f8cda1f09eae33c43a
SHA1

1564dfa8e6e9ec87dceb8bd62b8ac3d83828af29
SHA256

a894b41925b991003059be51033d36a4799b503a071ee6e838b7ffbcfd3c926e
SHA512

0668526e231ca61797b99e4ba9f3936eb06ecd0eb4275b16d3db20445657a885b6e51136ce7eedbb489cabcb50f5136d4028edd06b75b22ca088f547387cb886
SSDEEP

49152:QnpEKUacBVQej/1INRx+TSqTdX1HkQo6SAA+nvn:QpyfBhz1aRxcSUDk36SAjvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3346) 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
3936	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	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240635000	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	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 3936	812	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	87
PID 812 wrote to memory of 3936	812	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	87
PID 812 wrote to memory of 3936	812	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:812
- 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:3936

C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3636

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
35908f5d4cbe7845474819374e432d8e

SHA1
b1260aa1a1e45c8d1bb523889f0cd4df3a49b343

SHA256
7e10ca3d50031df5a50b2362370945ff24efc89a3090a8af70abb163cff2709f

SHA512
490960fb8c88dd1485c7808164819238a89c15fbc6c93df690aa020b43d5c41d5513edac39b3cc95a4662b655691df4559034d3eed56a1f19a51d55abf9c36a8

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Analysis

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