wannacry | e8db192b5e9138f3c8210b444b2d4462fd34dec3ae1eb06622658ad3de6aac57

General

Target
2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Size 5.0MB
Sample241003-lfxtbazbmb
SHA256 e8db192b5e9138f3c8210b444b2d4462fd34dec3ae1eb06622658ad3de6aac57
MD5 48fabd6e18fef46b22855f0180dfc2ab
SHA1 f08c6b8fb346482f5591084aed5e9a210fac30f7
SHA512 98d9e6ccbf43f87444f2edfff2274d9d591c6e4b746c9d0e8e07064a2ee368a45ed83bad28f77006b3e024bc342629d965ee2a0daeff6f4143d46a1046ac4876
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:yDqPoBhz1aRxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3195) 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
2760	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3258774B-C9CB-4688-BFA2-927802793410}\WpadNetworkName = "Network 3"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-4f-33-8d-3d-8c	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0068000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3258774B-C9CB-4688-BFA2-927802793410}	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3258774B-C9CB-4688-BFA2-927802793410}\WpadDecision = "0"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-4f-33-8d-3d-8c\WpadDecisionReason = "1"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-4f-33-8d-3d-8c\WpadDecisionTime = 102886b57615db01	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-4f-33-8d-3d-8c\WpadDecision = "0"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3258774B-C9CB-4688-BFA2-927802793410}\WpadDecisionReason = "1"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3258774B-C9CB-4688-BFA2-927802793410}\da-4f-33-8d-3d-8c	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3258774B-C9CB-4688-BFA2-927802793410}\WpadDecisionTime = 102886b57615db01	2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2544
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2760

C:\Users\Admin\AppData\Local\Temp\2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-03_48fabd6e18fef46b22855f0180dfc2ab_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2352

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

tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 e9b88372ffada728a38276d07992171a769a11eec4dbe719bb722f3a81bfaf4b
MD5 42fcd191aa67d8e4dfbb8a8ee42e175c
SHA1 5d74e03cf32e7ec7e7dedfb8d14c33d321596dba
SHA512 3e963e931aca13b455b069798cdbee5e184f30faa2be914bc9815cfd4617007311af85b14461954d777942be590efd440df367ef4fa26f2a8ad123ee7504d55a
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:QqPoBhz1aRxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

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