Win32/Filecoder [Threat Name] go to Threat
Win32/Filecoder.ODM [Threat Variant Name]
| Category | trojan |
| Size | 68608 B |
| Aliases | Ransom:Win32/FileCoder.SG!MTB (Microsoft) |
Short description
Win32/Filecoder.ODM is a trojan that encrypts files on fixed, removable and network drives. To decrypt files the user is requested to comply with given conditions in exchange for a password/instructions.
Installation
The trojan is usually a part of other malware with name PowerShell/Kryptik.AX .
The trojan does not create any copies of itself.
Payload information
Win32/Filecoder.ODM is a trojan that encrypts files on fixed, removable and network drives.
The trojan searches for files with the following file extensions:
- .3ds
- .3fr
- .7z
- .accdb
- .accdt
- .aep
- .ai
- .apk
- .arw
- .asp
- .asset
- .avi
- .backup
- .bak
- .bar
- .bay
- .bc6
- .bc7
- .big
- .bik
- .bin
- .bkf
- .bkp
- .blob
- .bpw
- .bsa
- .c
- .cab
- .cas
- .cdf
- .cdr
- .cer
- .cfr
- .con
- .cpp
- .cr2
- .crt
- .crw
- .cs
- .css
- .csv
- .d3dbsp
- .das
- .dat
- .db
- .db0
- .dba
- .dbf
- .dcr
- .der
- .desc
- .dmp
- .dng
- .doc
- .docm
- .docx
- .dot
- .dotm
- .dotx
- .dwfx
- .dwg
- .dxf
- .dxg
- .eml
- .epk
- .eps
- .erf
- .esm
- .fdb
- .flv
- .forge
- .fos
- .fpk
- .fsh
- .gdb
- .gho
- .gif
- .h
- .hkdb
- .hkx
- .hplg
- .htm
- .html
- .hvpl
- .hxs
- .chm
- .ibank
- .icxs
- .idx
- .iso
- .itdb
- .itl
- .itm
- .iwd
- .iwi
- .java
- .jpe
- .jpeg
- .jpg
- .js
- .kdb
- .kdbx
- .kdc
- .key
- .kf
- .layout
- .lbf
- .ldf
- .litemod
- .lrf
- .ltx
- .lvl
- .m2
- .m3u
- .m4a
- .map
- .max
- .mcmeta
- .mdb
- .mdbackup
- .mddata
- .mdf
- .mef
- .menu
- .mlx
- .mov
- .mp3
- .mp4
- .mpqge
- .mrwref
- .ncf
- .nrw
- .nsf
- .ntl
- .odb
- .odc
- .odm
- .odp
- .ods
- .odt
- .orf
- .oth
- .p12
- .p7b
- .p7c
- .pak
- .pdb
- .pdb
- .pdd
- .pef
- .pem
- .pfx
- .php
- .pkpass
- .pl
- .png
- .pot
- .potm
- .potx
- .ppam
- .pps
- .ppsm
- .ppsx
- .ppt
- .pptm
- .pptx
- .prf
- .prproj
- .ps
- .psd
- .psk
- .pst
- .ptx
- .pub
- .py
- .qba
- .qbb
- .qbw
- .qbx
- .qdf
- .qic
- .sav
- .sb
- .sdf
- .shtm
- .shtml
- .sid
- .sidd
- .sidn
- .sie
- .sis
- .sldm
- .sldx
- .slm
- .sln
- .snx
- .sql
- .sr2
- .srf
- .srw
- .stc
- .sum
- .svg
- .sxc
- .t12
- .t13
- .tar
- .tax
- .tbl
- .tib
- .txt
- .upk
- .vcf
- .vdf
- .vfs0
- .vpk
- .vpp_pc
- .vtf
- .w3x
- .wallet
- .wav
- .wdb
- .wma
- .wmo
- .wmv
- .wpd
- .wps
- .x3f
- .xf
- .xla
- .xlam
- .xlk
- .xll
- .xlm
- .xls
- .xlsb
- .xlsm
- .xlsx
- .xlt
- .xltm
- .xltx
- .xlw
- .xml
- .z
- .zip
- .ztmp
It avoids files from the following directories:
- Program Files
- Program Files (x86)
- System Volume Information
- Windows
It avoids files with the following filenames:
- YOUR_FILES_ARE_ENCRYPTED.HTML
The trojan encrypts the file content.
The EC, ChaCha20 encryption algorithm is used.
The extension of the encrypted files is changed to:
- %originalfilepath%%ec_file_pub_key_hex%
A string with variable content is used instead of %ec_file_pub_key_hex% .
The following file is dropped in the same folder:
- YOUR_FILES_ARE_ENCRYPTED.HTML
To decrypt files the user is requested to comply with given conditions in exchange for a password/instructions.
It contains the following text:
Information stealing
Win32/Filecoder.ODM is a trojan that steals sensitive information.
The trojan collects the following information:
- user name
- computer name
The trojan attempts to send gathered information to a remote machine.
The trojan contains a list of (2) URLs. The HTTP protocol is used.
Other information
The trojan removes all of the volume shadow copies in order to prevent restoring the original files.