wannacry | 837e9e5844ee89aaad23c613f26daba7e67980598e38a6e59b863443fb6457ac

General

Target

2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Size

5.0MB
MD5

ae84c8c56f41c9a47a5aa4210c211947
SHA1

c7bd19fb911613c375c6ca9891167f7a9a4b3e1b
SHA256

837e9e5844ee89aaad23c613f26daba7e67980598e38a6e59b863443fb6457ac
SHA512

3081691c8307460b98657662e9e8e7ad98fca5769594c6405d7a9931e14bf313b6154845baea0ac6b7a55e1134b110a110920b3af232880098c922ef1acd5bd1
SSDEEP

49152:2nAQqMSPbcBVQej/1IN01HkQo6SAARdhnvxJM0H9PAMEcaEaue5c/bXZ:yDqPoBhz1auk36SAEdhvxWa9P59Uc/

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 (3352) 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
2320	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	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_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	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B141442-7616-4C21-908A-1F9D7B581A19}	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B141442-7616-4C21-908A-1F9D7B581A19}\WpadDecisionTime = 20e21cc74885db01	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B141442-7616-4C21-908A-1F9D7B581A19}\WpadNetworkName = "Network 3"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00bb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B141442-7616-4C21-908A-1F9D7B581A19}\WpadDecisionReason = "1"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B141442-7616-4C21-908A-1F9D7B581A19}\WpadDecision = "0"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{6B141442-7616-4C21-908A-1F9D7B581A19}\6e-d4-8c-f1-46-39	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-d4-8c-f1-46-39\WpadDecisionReason = "1"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-d4-8c-f1-46-39\WpadDecisionTime = 20e21cc74885db01	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-d4-8c-f1-46-39\WpadDecision = "0"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\6e-d4-8c-f1-46-39	2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2088
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2320

C:\Users\Admin\AppData\Local\Temp\2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-02-22_ae84c8c56f41c9a47a5aa4210c211947_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2300

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

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
095262acfd56603751e90b2ad1e48485

SHA1
918d02161988c8e388135e9d14545251cdc78053

SHA256
77629e7228090b5e589e8c86c7b6084e0ecd9d44ece6f8780c59d5786b56b429

SHA512
b98cdee0a4076f591cd32ca87c05947172b8708b4e563e8e1ef55874d713096432787dd4b49800de14ce0d6e48f2f1bce4c9e876b16bd59541ec4393992c8efa

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Analysis

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