RANSOM_CRYPRAAS.B
Linux
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This ransomware is a variant of Encryptor RaaS, a popular Ransomware as a Service (RaaS) that came out in July 2015. RANSOM_CRYPRAAS.B is known to encrypt files on Linux servers, as well as desktops.
To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
161,992 bytes
ELF
No
02 Jul 2016
Encrypts files
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Dropping Routine
This Trojan drops the following files:
- {Folders containing encrypted files}\readme_liesmich_encryptor_raas_{customer ID}.txt-serves as ransom note
Other Details
This Trojan does the following:
- Exludes the following files from encrypting:
- wallet.dat
- electrum.dat
- Encrypts files with filenames that contains the following strings and extensions:
- 0
- -0
- 000
- 001
- 002
- 003
- 004
- 005
- 006
- 007
- 008
- 009
- 1
- -1
- 10
- -10
- 11
- -11
- 12
- -12
- 13
- -13
- 14
- -14
- 15
- -15
- 16
- -16
- 17
- -17
- 18
- -18
- 19
- -19
- 1pa
- 2
- -2
- 2fs
- 3
- -3
- 3dm
- 3ds
- 3g2
- 3gp
- 4
- -4
- 5
- -5
- 6
- -6
- 7
- -7
- 7z
- 8
- -8
- 9
- -9
- aac
- aaf
- abbu
- abw
- accdb
- adr
- aep
- aepx
- aet
- ahk
- ai
- aif
- alt
- ape
- apk
- arc
- arv
- arw
- as
- as3
- asc
- asf
- ashdisc
- asm
- asmx
- asp
- aspx
- asx
- aup
- avi
- ba0
- backup
- bak
- bas
- bbb
- bc
- bc!
- bcmx
- bdb
- bde
- bdf
- bdg
- bdi
- bdk
- bdl
- bdm
- bdmv
- bdsproj
- bdw
- bdx
- bee
- ben
- bes
- bex
- bexpk
- bf
- bf2
- bfa
- bfb
- bfe
- bff
- bgz
- bhx
- bib
- bibtex
- bik
- bina
- bkf
- bkp
- bks
- bkup
- bmp
- boe
- bpl
- bpn
- bson
- btd
- bz2
- c
- c++
- cad
- cadp
- caf
- cal
- cbu
- cc
- cda
- cdf
- cdi
- cdr
- cdt
- cdx
- cer
- cert
- cfc
- cfg
- cfm
- cgi
- cgn
- chk
- chr
- class
- clk
- cmx
- cnt
- cod
- conf
- cpio
- cpp
- cpt
- cpx
- cr2
- crd
- crt
- crw
- crypt7
- cs
- csh
- csl
- csproj
- csr
- csv
- cue
- d64
- data
- db3
- dbf
- dbt
- dbx
- dcp
- dcr
- dds
- ddz
- del
- dem
- des
- deviceids
- df
- dfd
- dfproj
- dia
- dif
- diff
- dir
- diz
- dlc
- dmg
- doc
- docb
- docm
- docx
- dot
- dotm
- dotx
- dqy
- drw
- ds4
- dsb
- dsf
- dsn
- dta
- dtr
- dtv
- dwg
- dxf
- ebk
- eddx
- edoc
- efx
- elfo
- emf
- eml
- emlx
- enc
- eps
- epub
- es
- es~
- ex4
- exp
- ezm
- fdb
- fdf
- ff1
- ffa
- ffl
- ffo
- ffs_db
- fft
- ffu
- ffx
- fh10
- fh11
- fi2
- fig
- fil
- fim
- fla
- flac
- flg
- flp
- flv
- fmd
- fmv
- fpt
- fpx
- ftp
- fx0
- fx1
- fxr
- gam
- gar
- gbc
- gcode
- gem
- gho
- ghs
- gid
- gif
- gla
- gpg
- gpx
- gz
- h
- h++
- hbk
- hdd
- hds
- hex
- hpp
- hst
- htc
- hwp
- hwp
- ico
- ics
- idml
- idx
- if
- iff
- iif
- imb
- img
- imh
- iml
- imm
- in0
- indb
- indd
- indl
- indt
- ini2
- int
- inx
- ipd
- iso
- isz
- iwa
- j2k
- jad
- jar
- java
- jdb
- jks
- jmf
- jp2
- jpeg
- jpf
- jpg
- jpm
- jpx
- json
- jsp
- jspa
- jspx
- jst
- k1f
- kb1
- kcf
- kch
- kcl
- kdb
- kdbx
- key
- keynote
- kml
- kmz
- knt
- kpr
- lbl
- ld
- ldif
- lgb
- lib
- lic
- lis
- lpd
- ls
- ltx
- lwp
- lyc
- lyt
- lzma
- m3u
- m3u8
- m4a
- m4u
- m4v
- mab
- mac
- mailhost
- mar
- max
- mb
- mbox
- mbs
- mcs
- md2
- mdb
- mdbackup
- mddata
- mde
- mdf
- mdi
- mdinfo
- mds
- mdw
- mdx
- met
- mht
- mhtml
- mid
- mke
- mlm
- mmf
- mnu
- mobileprovision
- mod
- mon
- mov
- mozeml
- mp3
- mp4
- mpa
- mpb
- mpeg
- mpg
- mpj
- mpp
- mq4
- mqh
- mrw
- ms
- msf
- msg
- mso
- mswmm
- mta
- mts
- mus
- mx0
- myd
- myf
- myi
- nam
- nap
- nba
- nbf
- nbi
- nbu
- nbz
- nco
- nd
- nef
- nes
- net
- new
- nfo
- nick
- nng
- note
- nr
- nrg
- nri
- nru
- ns
- nws
- nzb
- oa4
- oac
- odb
- odc
- odg
- odp
- ods
- odt
- ogg
- old
- one
- onepkg
- ops
- opt
- or4
- orf
- org
- otm
- ott
- ova
- ovf
- ovpn
- oxps
- p
- p12
- p2i
- p65
- p7
- pages
- pat
- patch
- pbi
- pbx
- pcd
- pct
- pcx
- pdfx
- pehape
- pem
- pfb
- pfq
- pfx
- pgp
- php
- php3
- php4
- php5
- phps
- phpx
- phpxx
- phtm
- phtml
- pic
- pid
- pins
- pip
- pk
- pl
- plb
- plist
- plt
- pm1
- pmd
- pmk
- pmm
- pmx
- pnf
- png
- pot
- potm
- potx
- pp4
- pp5
- ppa
- ppam
- ppdf
- ppf
- ppj
- pps
- ppsm
- ppsx
- ppt
- pptm
- pptx
- pref
- prn
- prproj
- prt
- ps
- ps1
- psd
- psp
- pspimage
- pst
- ptb
- ptn
- ptn2
- ptx
- pub
- pvm
- pwd
- pwi
- px
- py
- pym
- qba
- qbb
- qbi
- qbm
- qbo
- qbp
- qbquery
- qbr
- qbw
- qbx
- qby
- qcn
- qcow
- qcow2
- qpd
- qsm
- qss
- qst
- qt
- qwc
- qxp
- r0
- ra
- raf
- rar
- raw
- rb
- rdp
- recipients
- recipientsbackup0
- recipientsbackup1
- recipientsbackup2
- recipientsbackup3
- recipientsbackup4
- recipientsbackup5
- recipientsbackup6
- recipientsbackup7
- recipientsbackup8
- recipientsbackup9
- repl
- rif
- riff
- rm
- rpb
- rpmsg
- rtf
- rtp
- rw2
- s
- sam
- sav
- sb
- sbf
- schd
- sct
- scv
- sda
- sdc
- sdf
- sdi
- sds
- sdx
- sdy
- secure
- seed
- sel
- seq
- ses
- set
- sfs
- sfv
- shlb
- shs
- shw
- skb
- skd
- skp
- sldm
- sldx
- slf
- slk
- sln
- slt
- sme
- smk
- smm
- smp
- smr
- sms
- spb
- spi
- spro
- sql
- sqlite
- sqlitedb
- srp
- srt
- srv
- ssc
- ssi
- sss
- stf
- stg
- stl
- stw
- sub
- suo
- svg
- swf
- sxw
- symbolmap
- syncdb
- tag
- tar
- tav
- tb3
- tc
- tdl
- tex
- tga
- thm
- thmx
- tib
- tif
- tiff
- tlg
- tlx
- toast
- torrent
- tpl
- ts
- tv
- tvc
- txt
- ucd
- ufo
- user
- v30
- val
- vbk
- vcard
- vcd
- vcf
- vcs
- vcxproj
- vdi
- vfs4
- vhd
- vhdx
- vir
- vmc
- vmdk
- vmx
- vob
- vrge08contact
- vsd
- vsv
- wab
- wallet
- war
- wav
- wbk
- wbverify
- wc
- wdseml
- webarchive
- webm
- whtt
- wi
- wim
- win
- wk3
- wk4
- wlt
- wma
- wmb
- wmf
- wmv
- workflow
- wpb
- wpd
- wpg
- wpl
- wps
- wsb
- xcf
- xdw
- xed
- xg0
- xg1
- xg2
- xla
- xlam
- xlg
- xlk
- xll
- xlm
- xlr
- xls
- xlsb
- xlsm
- xlsx
- xlt
- xltm
- xltx
- xlw
- xoml
- xpm
- xps
- xqx
- xsn
- xz
- yg0
- yg1
- yg2
- yuv
- z
- zip
- zipx
NOTES:
The ransom note contains the following:
SOLUTION
9.800
12.624.08
01 Jul 2016
12.625.00
02 Jul 2016
Scan your computer with your Trend Micro product to delete files detected as RANSOM_CRYPRAAS.B. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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