wannacry | 6aaf7f2665f77ae5b9ab560abcab5fdeb95bbfabba1922daa9509547dec78931

General

Target

2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Size

5.0MB
MD5

cafff9fcf64d3db867bf6c0bb6917e5e
SHA1

327e9782b0bf99fa6060f3a971c97c1a7c41dece
SHA256

6aaf7f2665f77ae5b9ab560abcab5fdeb95bbfabba1922daa9509547dec78931
SHA512

46f5fbcd316eae7129f6650887eb6d38866f7616b6ecc96b4ba379a83ef75b8bda60cf74ebf0a7ee431d021d9ab9303e5c71e0f915d62c5bb828031c1e8c42b3
SSDEEP

49152:XnAQqMSPbcBVQej/1Wx+TSqTdXHVKzT6SAARdh:XDqPoBhz1WxcSUjKzT6SAEdh

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 (763) 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
2792	tasksche.exe

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	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_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	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-20-e9-16-01-5f\WpadDecision = "0"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{35826725-DE81-4347-953C-D173E00183BE}\WpadNetworkName = "Network 3"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0088000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{35826725-DE81-4347-953C-D173E00183BE}	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{35826725-DE81-4347-953C-D173E00183BE}\WpadDecision = "0"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-20-e9-16-01-5f	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{35826725-DE81-4347-953C-D173E00183BE}\be-20-e9-16-01-5f	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-20-e9-16-01-5f\WpadDecisionReason = "1"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{35826725-DE81-4347-953C-D173E00183BE}\WpadDecisionReason = "1"	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{35826725-DE81-4347-953C-D173E00183BE}\WpadDecisionTime = e070b7f42c71db01	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\be-20-e9-16-01-5f\WpadDecisionTime = e070b7f42c71db01	2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:3032
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2792

C:\Users\Admin\AppData\Local\Temp\2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-25_cafff9fcf64d3db867bf6c0bb6917e5e_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a56fed8a8a3fed1c79209334f1c2e67b

SHA1
0d81e451ba2486307d258354f681b008d93a60af

SHA256
641a44c7a3b811376afef0489492bc3bb5f333dd70b767b9d28dd31e44b17e57

SHA512
509ddfb636beb5a2d27b7e87e5be4b9a9fe09c691627516ea54d3e79d5a1cc23d429c5553c51984941a0e744f41e1937b2215c136664ab12438c9f01f626eecb

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