Type
File Name
Location
Nefilim was first discovered in March 2020 in enterprise cloud environments. Nefilim is found in environments with a number of different names, including Nefilim, Nefilim Doxware, Nephilim, Offwhite, Sigareta, Telegram, Nef1lim, Mefilin, Trapget, Merin, Fusion, Infection, Milihpen, Derzko, Gangbang, Kiano, Mansory, etc. For a full list of all names, please see below.
Name
Nefilim
First Seen
March 2020
Nefilim is known to target specific file types. Below are all known file types that Nefilim is known to infect.
In some cases, ransomware will update the modified date, when it encrypts files. Nefilim updates the last modified date of the file it targets.
Some ransomware will change or append a suffix to the end of the file after they are encrypted, including changing the extension of a file. Here are some of the possible suffixes that Nefilim ransomware is known to change.
Suffixes
.NEFILIM, .NEPHILIM, .OFFWHITE, .SIGARETA, .TELEGRAM, .NEF1LIM, .MEFILIN, .TRAPGET, .MERIN, .FUSION, .INFECTION, .MILIHPEN, .DERZKO, .GANGBANG, .BENTLEY, .KIANO, .MANSORY, .f1, .LEAKS, .PUSSY
Not all ransomware leaves a note. However, some ransomware leaves the infected party instructions on what the user should do to get rid of the ransomware, or satisfy the ransom. This often involves transferring money, often bitcoin or another cryptocurrency to a designated wallet.
Below are the type(s) of notes, content, and typical locations where Elastio has found ransom notes from Nefilim.
Type File Name Location file NEFILIM-DECRYPT.txt EveryFolder file NEPHILIM-DECRYPT.txt EveryFolder file OFFWHITE-MANUAL.txt EveryFolder file SIGARETA-RESTORE.txt EveryFolder file TELEGRAM-RECOVER.txt EveryFolder file NEF1LIM-DECRYPT.txt EveryFolder file TRAPGET-INSTRUCTION.txt EveryFolder file MERIN-DECRYPTING.txt EveryFolder file FUSION-README.txt EveryFolder file MILIHPEN-INSTRUCT.txt EveryFolder
These are the names of the executables that contain the undetonated ransomware payload for Nefilim.
Executables
2.exe, 1.exe, nelifis.exe, kinodomino.exe, JISFMU5GNZSHLnG.exe, weeli.exe, FB_21B3.tmp.exe, sync.bad, winnit.bin, red.eze, spt.exe, tel.exe, alt.exe, happynewyear.exe, aes.exe, scc-2.exe, mma.exe, spt(1).bin, xxx.exe, sync.bad.exe, look (uploaded by Matt Browning (via weblink) Sep 22 2020 11-03-47 UTC).exe
Ransomware often links to external pages such as payment pages, telegram contacts, etc. Below are some of the URLs Elastio has found to be associated with Nefilim.
External Pages
