buran

General

Target

mesager43.exe
Size

511KB
Sample

201104-ygmkxrn8ma
MD5

3163bba8a4861d47aafa1667d3082fee
SHA1

32824014c8740b8fef306e742c891bec0ef068d3
SHA256

39016358b939b83cf9997c447458ae2d13186c3f66e66784c9e8ff4031b60c7e
SHA512

e25f77dd78df4a80ec02f01c8c6ed85fa0f9028ea87b899ffa0a5a87d211cb8c861d4e7912bb8d3cc3ee0a7240eb130f0abd6ffa0d3698b3d416c70de52eb450

Score

10^/10

Malware Config

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note

!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: kassmaster@danwin1210.me and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: kassmaster@danwin1210.me Reserved email: kassmaster@tutanota.com Your personal ID: 41D-439-C1B Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Emails

kassmaster@danwin1210.me

kassmaster@tutanota.com

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note

!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: kassmaster@danwin1210.me and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: kassmaster@danwin1210.me Reserved email: kassmaster@tutanota.com Your personal ID: 1DF-530-E96 Attention! * Do not rename encrypted files. * Do not try to decrypt your data using third party software, it may cause permanent data loss. * Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Emails

kassmaster@danwin1210.me

kassmaster@tutanota.com

Targets

- Target
  
  mesager43.exe
- Size
  
  511KB
- MD5
  
  3163bba8a4861d47aafa1667d3082fee
- SHA1
  
  32824014c8740b8fef306e742c891bec0ef068d3
- SHA256
  
  39016358b939b83cf9997c447458ae2d13186c3f66e66784c9e8ff4031b60c7e
- SHA512
  
  e25f77dd78df4a80ec02f01c8c6ed85fa0f9028ea87b899ffa0a5a87d211cb8c861d4e7912bb8d3cc3ee0a7240eb130f0abd6ffa0d3698b3d416c70de52eb450
Score

10^/10

buran persistence ransomware upx
- Buran
  Ransomware-as-a-service based on the VegaLocker family first identified in 2019.
  ransomware buran
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Executes dropped EXE
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Deletes itself
- Loads dropped DLL
- Adds Run key to start application
  persistence
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Modifies service
  persistence
behavioral1 behavioral2