badrabbit

General

Target

yiff-patcher.exe
Size

472KB
Sample

240617-wmbvjaybqa
MD5

7ad46837428260d0882bfecaeb855546
SHA1

391ed1de614e439cc6fb3d8abd0210633edee949
SHA256

e00388356146e2346a4b5f699cd222732d02242c65764650d77cae5ebf4d1089
SHA512

005b5349a5b826aebd516c7b808014cb0cd92ff01bc4f4bb45041adf22a38a30d5634889cf85c87361233ab8c243222abc049f05d4391d92b2261abe0690550a
SSDEEP

6144:7lhpExVAjyoj5PIN9tIyMAAMUGjP9kRIkyUtP0QfGz4cmNc6koXcJvhFlUZ:7lhpXeTtyAzdjFaIkyUtPaUTC6yhYZ

Score

10^/10

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\@[email protected]

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 "@[email protected]". 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
  
  yiff-patcher.exe
- Size
  
  472KB
- MD5
  
  7ad46837428260d0882bfecaeb855546
- SHA1
  
  391ed1de614e439cc6fb3d8abd0210633edee949
- SHA256
  
  e00388356146e2346a4b5f699cd222732d02242c65764650d77cae5ebf4d1089
- SHA512
  
  005b5349a5b826aebd516c7b808014cb0cd92ff01bc4f4bb45041adf22a38a30d5634889cf85c87361233ab8c243222abc049f05d4391d92b2261abe0690550a
- SSDEEP
  
  6144:7lhpExVAjyoj5PIN9tIyMAAMUGjP9kRIkyUtP0QfGz4cmNc6koXcJvhFlUZ:7lhpXeTtyAzdjFaIkyUtPaUTC6yhYZ
Score

10^/10

badrabbit mimikatz wannacry defense_evasion discovery execution impact persistence ransomware worm
- BadRabbit
  Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.
  ransomware badrabbit
- Mimikatz
  mimikatz is an open source tool to dump credentials on Windows.
  mimikatz
- Wannacry
  WannaCry is a ransomware cryptoworm.
  ransomware worm wannacry
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware defense_evasion impact execution
- mimikatz is an open source tool to dump credentials on Windows
- Downloads MZ/PE file
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Modifies file permissions
  discovery
- Registers COM server for autorun
  persistence
- 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 NtSetInformationThreadHideFromDebugger
behavioral1