wannacry

General

Target

Windows11InstallationAssistant.exe
Size

4.0MB
Sample

240419-j1w2eace55
MD5

9efe0c8b7f96c1a7d5bdd52bf07d009d
SHA1

dc6ff2f1c0af472cdc81b05f876c10420a6bbb78
SHA256

03a9b3163071ecb41e20b95eb664c3165b9fcaba89f5e5433484d65e8cfa0380
SHA512

b66772e1faeff8c607b6624106530945997fe2105569cbf92cf0eaa31f7bd02ed46b74bae6e9d79b6f51da76445564ed73fe9eb2a6507e3ce5d543781ba227fb
SSDEEP

98304:Fguv/rctyMh4cCE3p8fuCNCzLX/sA2uQqvAVGht5f/LyXtcH//9:SVtyMh9CVPUDk+4QjyXa

Score

10^/10

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\Temp1_Ransomware.WannaCry.zip\@Please_Read_Me@.txt

Family

wannacry

Ransom Note

Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn Next, please find an application file named "@WanaDecryptor@.exe". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �

Wallets

115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn

Targets

- Target
  
  Windows11InstallationAssistant.exe
- Size
  
  4.0MB
- MD5
  
  9efe0c8b7f96c1a7d5bdd52bf07d009d
- SHA1
  
  dc6ff2f1c0af472cdc81b05f876c10420a6bbb78
- SHA256
  
  03a9b3163071ecb41e20b95eb664c3165b9fcaba89f5e5433484d65e8cfa0380
- SHA512
  
  b66772e1faeff8c607b6624106530945997fe2105569cbf92cf0eaa31f7bd02ed46b74bae6e9d79b6f51da76445564ed73fe9eb2a6507e3ce5d543781ba227fb
- SSDEEP
  
  98304:Fguv/rctyMh4cCE3p8fuCNCzLX/sA2uQqvAVGht5f/LyXtcH//9:SVtyMh9CVPUDk+4QjyXa
Score

10^/10

wannacry discovery persistence ransomware worm
- Wannacry
  WannaCry is a ransomware cryptoworm.
  ransomware worm wannacry
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Modifies file permissions
  discovery
- Uses the VBS compiler for execution
- Adds Run key to start application
  persistence
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Legitimate hosting services abused for malware hosting/C2
- Sets desktop wallpaper using registry
  ransomware
- Suspicious use of SetThreadContext
behavioral1