wannacry | 369591cac736fa22e6303966bb0996f5f73cf704e8333e65a7d23cf2e8fac7ad

General

Target

20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Size

5.0MB
MD5

e5dc5e1aa9bd2fb81da698e6e559ec18
SHA1

42f67ad0772558500517b84b7a51f26b9da5d2fb
SHA256

369591cac736fa22e6303966bb0996f5f73cf704e8333e65a7d23cf2e8fac7ad
SHA512

be54b35fece0e81e3ee5c1e9527a49d77e60b7ff8f53f2e365af9ad1f531c574b3eea9dccd33800f3acb9df79b9527ad46bdcecf8f7f65e57f9018f9be453388
SSDEEP

49152:2nAQqMSPbcBVQej/66SAHvxJM0H9PAMEcaEau3R8yAH1JlAH:yDqPoBhz66SAPxWa9P593R8yAVJ2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3284) 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
2824	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	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.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	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-e7-a9-ca-56-17\WpadDecisionReason = "1"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9483CAF8-8951-45AB-8058-F7CA6C5C239A}\WpadDecisionReason = "1"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9483CAF8-8951-45AB-8058-F7CA6C5C239A}\56-e7-a9-ca-56-17	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-e7-a9-ca-56-17\WpadDecision = "0"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-e7-a9-ca-56-17\WpadDecisionTime = 500d0250060edb01	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ce000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9483CAF8-8951-45AB-8058-F7CA6C5C239A}	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9483CAF8-8951-45AB-8058-F7CA6C5C239A}\WpadDecisionTime = 500d0250060edb01	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9483CAF8-8951-45AB-8058-F7CA6C5C239A}\WpadDecision = "0"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9483CAF8-8951-45AB-8058-F7CA6C5C239A}\WpadNetworkName = "Network 3"	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-e7-a9-ca-56-17	20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2256
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2824

C:\Users\Admin\AppData\Local\Temp\20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240923e5dc5e1aa9bd2fb81da698e6e559ec18wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2744

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
3.4MB

MD5
13b7e07aeb45ba68879d75d30728cda5

SHA1
5bb5602d674e468eb0b9cae6ea50b96e274fe6ad

SHA256
af91a284f0ced23df9913969a65cd098ae6c0562e1678234183a90d386ed4334

SHA512
dee0b449290da79a6b6e7b677e9bc329491c94a81ba40bb93ae032f57b6bbcbbc41013a83669d7b6dccb7da227fad419407a89da7e6fb608e4d0c878553240d5

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