- Distribution Method : Unknown
- MD5 : bcf0e5d50839268ab93d1210cf08fa37
- Major Detection Name : Trojan.Ransom.LockBit (ALYac), Ransom.Win32.LOCKBIT.YXDL3T (Trend Micro)
- Encrypted File Pattern : .1YwR2c1YK
- Malicious File Creation Location :
- C:\ProgramData\1YwR2c1YK.ico
- C:\ProgramData\<4-Digit Random>.tmp
- Message File : 1YwR2c1YK.README.txt
- Major Characteristics :
- Offline Encryption
- Block processes execution. (agntsvc, dbsnmp, isqlplussvc, oracle, sqbcoreservice, winword etc.)
- Stop multi services. (backup, GxFWD, mepocs, msexchange, sophos, veeam etc.)
- Delete multi services. (vmicvss, VSS, WdBoot, WdFilter, WdNisDrv, WinDefend etc.)
- Change encrypted file (.1YwR2c1YK) icon. (HKEY_CLASSES_ROOT\1YwR2c1YK)
- After the file is encrypted, it overwrites free disk space via the file "C:\ProgramData\<4-Digit Random>.tmp" to prevent file recovery.
- Empty the trash.
- Changes desktop background. (C:\ProgramData\1YwR2c1YK.bmp)
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