wannacry | 17357bc889ba1e8804a3debc662f501f8175b741bd14159013ebfac40b75f3de

General

Target

2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Size

2.2MB
MD5

ac9fb829273f33f818bee3d53645430e
SHA1

fdabb377ae802397ce441d496b8b1b348c3a5a5e
SHA256

17357bc889ba1e8804a3debc662f501f8175b741bd14159013ebfac40b75f3de
SHA512

d126cd66e9d422386c980fdeb71924721e5588f2750d8e3e375cb95b6d725de48565e483d885c9f6be2e7e573d554f037bc6bdce82373263fcf71eb507eedc40
SSDEEP

12288:e1bLgmluCti62WfSm0iEcQhfYg2g6rTcbckPU82900Ve7zw+K+DH:QbLguriIfEcQdGrYbcMNgef0Q

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3320) 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
4864	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_ac9fb829273f33f818bee3d53645430e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\__tmp_rar_sfx_access_check_240624484	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\tasksche.exe	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.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_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_ac9fb829273f33f818bee3d53645430e_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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 4864	548	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe	87
PID 548 wrote to memory of 4864	548	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe	87
PID 548 wrote to memory of 4864	548	2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- 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:4864

C:\Users\Admin\AppData\Local\Temp\2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-12_ac9fb829273f33f818bee3d53645430e_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2496

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
d0f6ce71e436ce17af83219c030fc844

SHA1
1407dd1a9e60320dd78ba0e329c4022e6ee35564

SHA256
cdd635f81c55640a45f62877ac0fd13e3a42955ea8f90a3bfd0b47a29eba37e6

SHA512
dab6c5a73b797f9e615e6d3e45240595f2e5d74879f5691239c085cc2bcb531e594a2449d70d7cebc6b8b6637e7e53b8f8f5e4fffe92bb0e9e6a8e8504292bd8

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