RANSOM_HIDDENTEARKILLSWITCH.A

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It encrypts files with specific file extensions. It encrypts files found in specific folders. It drops files as ransom note.

Arrival Details

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Ransomware Routine

This Ransomware encrypts files with the following extensions:

• .yuv
• .ycbcra
• .xis
• .wpd
• .tex
• .sxg
• .stx
• .srw
• .srf
• .sqlitedb
• .sqlite3
• .sqlite
• .sdf
• .sda
• .s3db
• .rwz
• .rwl
• .rdb
• .rat
• .raf
• .qby
• .qbx
• .qbw
• .qbr
• .qba
• .psafe3
• .plc
• .plus_muhd
• .pdd
• .oth
• .orf
• .odm
• .odf
• .nyf
• .nxl
• .nwb
• .nrw
• .nop
• .nef
• .ndd
• .myd
• .mrw
• .moneywell
• .mny
• .mmw
• .mfw
• .mef
• .mdc
• .lua
• .kpdx
• .kdc
• .kdbx
• .jpe
• .incpas
• .iiq
• .ibz
• .ibank
• .hbk
• .gry
• .grey
• .gray
• .fhd
• .ffd
• .exf
• .erf
• .erbsql
• .eml
• .dxg
• .drf
• .dng
• .dgc
• .des
• .der
• .ddrw
• .ddoc
• .dcs
• .db_journal
• .csl
• .csh
• .crw
• .craw
• .cib
• .cdrw
• .cdr6
• .cdr5
• .cdr4
• .cdr3
• .bpw
• .bgt
• .bdb
• .bay
• .bank
• .backupdb
• .backup
• .back
• .awg
• .apj
• .ait
• .agdl
• .ads
• .adb
• .acr
• .ach
• .accdt
• .accdr
• .accde
• .vmxf
• .vmsd
• .vhdx
• .vhd
• .vbox
• .stm
• .rvt
• .qcow
• .qed
• .pif
• .pdb
• .pab
• .ost
• .ogg
• .nvram
• .ndf
• .m2ts
• .log
• .hpp
• .hdd
• .groups
• .flvv
• .edb
• .dit
• .dat
• .cmt
• .bin
• .aiff
• .xlk
• .wad
• .tlg
• .say
• .sas7bdat
• .qbm
• .qbb
• .ptx
• .pfx
• .pef
• .pat
• .oil
• .odc
• .nsh
• .nsg
• .nsf
• .nsd
• .mos
• .indd
• .iif
• .fpx
• .fff
• .fdb
• .dtd
• .design
• .ddd
• .dcr
• .dac
• .cdx
• .cdf
• .blend
• .bkp
• .adp
• .act
• .xlr
• .xlam
• .xla
• .wps
• .tga
• .pspimage
• .pct
• .pcd
• .fxg
• .flac
• .eps
• .dxb
• .drw
• .dot
• .cpi
• .cls
• .cdr
• .arw
• .aac
• .thm
• .srt
• .save
• .safe
• .pwm
• .pages
• .obj
• .mlb
• .mbx
• .lit
• .laccdb
• .kwm
• .idx
• .html
• .flf
• .dxf
• .dwg
• .dds
• .csv
• .css
• .config
• .cfg
• .cer
• .asx
• .aspx
• .aoi
• .accdb
• .7zip
• .xls
• .wab
• .rtf
• .prf
• .ppt
• .oab
• .msg
• .mapimail
• .jnt
• .doc
• .dbx
• .contact
• .mid
• .wma
• .flv
• .mkv
• .mov
• .avi
• .asf
• .mpeg
• .vob
• .mpg
• .wmv
• .fla
• .swf
• .wav
• .qcow2
• .vdi
• .vmdk
• .vmx
• .wallet
• .upk
• .sav
• .ltx
• .litesql
• .litemod
• .lbf
• .iwi
• .forge
• .das
• .d3dbsp
• .bsa
• .bik
• .asset
• .apk
• .gpg
• .aes
• .ARC
• .PAQ
• .tarbz2
• .tbk
• .bak
• .tar
• .tgz
• .rar
• .zip
• .djv
• .djvu
• .svg
• .bmp
• .png
• .gif
• .raw
• .cgm
• .jpeg
• .jpg
• .tif
• .tiff
• .NEF
• .psd
• .cmd
• .bat
• .class
• .jar
• .java
• .asp
• .brd
• .sch
• .dch
• .dip
• .vbs
• .asm
• .pas
• .cpp
• .php
• .ldf
• .mdf
• .ibd
• .MYI
• .MYD
• .frm
• .odb
• .dbf
• .mdb
• .sql
• .SQLITEDB
• .SQLITE3
• .pst
• .onetoc2
• .asc
• .lay6
• .lay
• .ms11
• .(Security
• .copy)
• .sldm
• .sldx
• .ppsm
• .ppsx
• .ppam
• .docb
• .mml
• .sxm
• .otg
• .odg
• .uop
• .potx
• .potm
• .pptx
• .pptm
• .std
• .sxd
• .pot
• .pps
• .sti
• .sxi
• .otp
• .odp
• .wks
• .xltx
• .xltm
• .xlsx
• .xlsm
• .xlsb
• .slk
• .xlw
• .xlt
• .xlm
• .xlc
• .dif
• .stc
• .sxc
• .ots
• .ods
• .hwp
• .dotm
• .dotx
• .docm
• .docx
• .DOT
• .max
• .xml
• .txt
• .CSV
• .uot
• .RTF
• .pdf
• .XLS
• .PPT
• .stw
• .sxw
• .ott
• .odt
• .DOC
• .pem
• .csr
• .crt
• .key

It encrypts files found in the following folders:

• %User Profile%\Documents\test

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It appends the following extension to the file name of the encrypted files:

• .switch

It drops the following file(s) as ransom note:

• %User Profile%\Documents\test\KILLSWITCH_README.txt

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It leaves text files that serve as ransom notes containing the following text:

NOTES:
The ransomware displays the following window as ransom note: