wannacry | 3f66313a8e8c88385bf831620cf90260b5753fa606aa0ce1c1351079b9540c04

General

Target

20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Size

3.6MB
MD5

ef1cc98616f992cc4892dad940395021
SHA1

a6285a09a3ef24c572a44df7d8fbf4085b0a3caf
SHA256

3f66313a8e8c88385bf831620cf90260b5753fa606aa0ce1c1351079b9540c04
SHA512

0840e9257881bcdf3fd9666c04f89984b635c6db2988cd13d2b60c52b41f3bfd26c435fb89609b29c05d02d9fd28b1097c856b0a4d4755d6f82382dac3a3ef7d
SSDEEP

49152:2nAQqMSPbcBVQej31sNRx+TSqTdX1HkQo6SAARdh:yDqPoBhT1+RxcSUDk36SAEdh

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3223) 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
1988	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	20240927ef1cc98616f992cc4892dad940395021wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240927ef1cc98616f992cc4892dad940395021wannacry.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	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240927ef1cc98616f992cc4892dad940395021wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3326A172-8694-4A10-8B22-30CCE1B66BAA}\WpadNetworkName = "Network 3"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3326A172-8694-4A10-8B22-30CCE1B66BAA}\WpadDecisionReason = "1"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3326A172-8694-4A10-8B22-30CCE1B66BAA}\WpadDecisionTime = 80c7a3960811db01	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3326A172-8694-4A10-8B22-30CCE1B66BAA}\WpadDecision = "0"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3326A172-8694-4A10-8B22-30CCE1B66BAA}\26-51-66-76-0b-0e	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-51-66-76-0b-0e	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fa000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3326A172-8694-4A10-8B22-30CCE1B66BAA}	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-51-66-76-0b-0e\WpadDecisionReason = "1"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-51-66-76-0b-0e\WpadDecisionTime = 80c7a3960811db01	20240927ef1cc98616f992cc4892dad940395021wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-51-66-76-0b-0e\WpadDecision = "0"	20240927ef1cc98616f992cc4892dad940395021wannacry.exe

C:\Users\Admin\AppData\Local\Temp\20240927ef1cc98616f992cc4892dad940395021wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240927ef1cc98616f992cc4892dad940395021wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2132
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:1988

C:\Users\Admin\AppData\Local\Temp\20240927ef1cc98616f992cc4892dad940395021wannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240927ef1cc98616f992cc4892dad940395021wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2600

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
4d816f501ac16033f62e1f4491ba5013

SHA1
351cf6da3c1558981742184d760c40f024467418

SHA256
cefd3dd63a749dddd624ece41ea27b0646f0b38489f6a06d82f9aed19a3d4f0a

SHA512
e416bcdd1bd905e0160318a4ae2f247b7c3abab8c57c9e590370622a643e42e93757dcba602a9602219808f39d04b7ba954e1ec72e930f32d391968fab7da79b

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