RANSOM_CERBER.AUSKM

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.

It connects to certain websites to send and receive information. It deletes the initially executed copy of itself.

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.

Installation

This Trojan drops the following files:

• %Desktop%\_README_{random}_.hta - Ransom Note
• _README_{random}_.hta - drop in all encrypted folders
• %Temp%\{random}.bmp - used as wallpaper

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.)

Other System Modifications

This Trojan sets the system's desktop wallpaper to the following image:

• %Temp%\{random}.bmp

(Note: %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.)

Process Termination

This Trojan terminates the following processes if found running in the affected system's memory:

• msftesql.exe
• sqlagent.exe
• sqlbrowser.exe
• sqlservr.exe
• sqlwriter.exe
• oracle.exe
• ocssd.exe
• dbsnmp.exe
• synctime.exe
• mydesktopqos.exe
• agntsvc.exeisqlplussvc.exe
• xfssvccon.exe
• mydesktopservice.exe
• ocautoupds.exe
• agntsvc.exeagntsvc.exe
• agntsvc.exeencsvc.exe
• firefoxconfig.exe
• tbirdconfig.exe
• ocomm.exe
• mysqld.exe
• mysqld-nt.exe
• mysqld-opt.exe
• dbeng50.exe
• sqbcoreservice.exe

Other Details

This Trojan connects to the following website to send and receive information:

• http://{BLOCKED}ug7m726zou.{BLOCKED}x.top

It encrypts files with the following extensions:

• .123
• .1cd
• .3dm
• .3ds
• .3fr
• .3g2
• .3gp
• .3pr
• .602
• .7z
• .7zip
• .aac
• .ab4
• .abd
• .acc
• .accdb
• .accde
• .accdr
• .accdt
• .ach
• .acr
• .act
• .adb
• .adp
• .ads
• .aes
• .agdl
• .ai
• .aiff
• .ait
• .al
• .aoi
• .apj
• .apk
• .arc
• .arw
• .ascx
• .asf
• .asm
• .asp
• .aspx
• .asset
• .asx
• .atb
• .avi
• .awg
• .back
• .backup
• .backupdb
• .bak
• .bank
• .bat
• .bay
• .bdb
• .bgt
• .bik
• .bin
• .bkp
• .blend
• .bmp
• .bpw
• .brd
• .bsa
• .bz2
• .c
• .cash
• .cdb
• .cdf
• .cdr
• .cdr3
• .cdr4
• .cdr5
• .cdr6
• .cdrw
• .cdx
• .ce1
• .ce2
• .cer
• .cfg
• .cfn
• .cgm
• .cib
• .class
• .cls
• .cmd
• .cmt
• .config
• .contact
• .cpi
• .cpp
• .cr2
• .craw
• .crt
• .crw
• .cry
• .cs
• .csh
• .csl
• .csr
• .css
• .csv
• .d3dbsp
• .dac
• .das
• .dat
• .db
• .db3
• .db_journal
• .dbf
• .dbx
• .dc2
• .dch
• .dcr
• .dcs
• .ddd
• .ddoc
• .ddrw
• .dds
• .def
• .der
• .des
• .design
• .dgc
• .dgn
• .dif
• .dip
• .dit
• .djv
• .djvu
• .dng
• .doc
• .docb
• .docm
• .docx
• .dot
• .dotm
• .dotx
• .drf
• .drw
• .dtd
• .dwg
• .dxb
• .dxf
• .dxg
• .edb
• .eml
• .eps
• .erbsql
• .erf
• .exf
• .fdb
• .ffd
• .fff
• .fh
• .fhd
• .fla
• .flac
• .flb
• .flf
• .flv
• .forge
• .fpx
• .frm
• .fxg
• .gbr
• .gho
• .gif
• .gpg
• .gray
• .grey
• .groups
• .gry
• .gz
• .h
• .hbk
• .hdd
• .hpp
• .html
• .hwp
• .ibank
• .ibd
• .ibz
• .idx
• .iif
• .iiq
• .incpas
• .indd
• .info
• .info_
• .iwi
• .jar
• .java
• .jnt
• .jpe
• .jpeg
• .jpg
• .js
• .json
• .k2p
• .kc2
• .kdbx
• .kdc
• .key
• .kpdx
• .kwm
• .laccdb
• .lay
• .lay6
• .lbf
• .lck
• .ldf
• .lit
• .litemod
• .litesql
• .lock
• .ltx
• .lua
• .m
• .m2ts
• .m3u
• .m4a
• .m4p
• .m4u
• .m4v
• .ma
• .mab
• .mapimail
• .max
• .mbx
• .md
• .mdb
• .mdc
• .mdf
• .mef
• .mfw
• .mid
• .mkv
• .mlb
• .mml
• .mmw
• .mny
• .money
• .moneywell
• .mos
• .mov
• .mp3
• .mp4
• .mpeg
• .mpg
• .mrw
• .ms11
• .msf
• .msg
• .mts
• .myd
• .myi
• .nd
• .ndd
• .ndf
• .nef
• .nk2
• .nop
• .nrw
• .ns2
• .ns3
• .ns4
• .nsd
• .nsf
• .nsg
• .nsh
• .nvram
• .nwb
• .nx2
• .nxl
• .nyf
• .oab
• .obj
• .odb
• .odc
• .odf
• .odg
• .odm
• .odp
• .ods
• .odt
• .ogg
• .oil
• .omg
• .one
• .onenotec2
• .orf
• .ost
• .otg
• .oth
• .otp
• .ots
• .ott
• .p12
• .p7b
• .p7c
• .pab
• .pages
• .paq
• .pas
• .pat
• .pbf
• .pcd
• .pct
• .pdb
• .pdd
• .pdf
• .pef
• .pem
• .pfx
• .php
• .pif
• .pl
• .plc
• .plus_muhd
• .pm
• .pm!
• .pmi
• .pmj
• .pml
• .pmm
• .pmo
• .pmr
• .pnc
• .pnd
• .png
• .pnx
• .pot
• .potm
• .potx
• .ppam
• .pps
• .ppsm
• .ppsx
• .ppt
• .pptm
• .pptx
• .prf
• .private
• .ps
• .psafe3
• .psd
• .pspimage
• .pst
• .ptx
• .pub
• .pwm
• .py
• .qba
• .qbb
• .qbm
• .qbr
• .qbw
• .qbx
• .qby
• .qcow
• .qcow2
• .qed
• .qtb
• .r3d
• .raf
• .rar
• .rat
• .raw
• .rb
• .rdb
• .re4
• .rm
• .rtf
• .rvt
• .rw2
• .rwl
• .rwz
• .s3db
• .safe
• .sas7bdat
• .sav
• .save
• .say
• .sch
• .sd0
• .sda
• .sdb
• .sdf
• .secret
• .sh
• .sldm
• .sldx
• .slk
• .slm
• .sql
• .sqlite
• .sqlite-shm
• .sqlite-wal
• .sqlite3
• .sqlitedb
• .sr2
• .srb
• .srf
• .srs
• .srt
• .srw
• .st4
• .st5
• .st6
• .st7
• .st8
• .stc
• .std
• .sti
• .stl
• .stm
• .stw
• .stx
• .svg
• .swf
• .sxc
• .sxd
• .sxg
• .sxi
• .sxm
• .sxw
• .tar
• .tax
• .tbb
• .tbk
• .tbn
• .tex
• .tga
• .tgz
• .thm
• .tif
• .tiff
• .tlg
• .tlx
• .txt
• .uop
• .uot
• .upk
• .usr
• .vb
• .vbox
• .vbs
• .vdi
• .vhd
• .vhdx
• .vmdk
• .vmsd
• .vmx
• .vmxf
• .vob
• .vpd
• .vsd
• .wab
• .wad
• .wallet
• .war
• .wav
• .wb2
• .wk1
• .wks
• .wma
• .wmf
• .wmv
• .wpd
• .wps
• .x11
• .x3f
• .xis
• .xla
• .xlam
• .xlc
• .xlk
• .xlm
• .xlr
• .xls
• .xlsb
• .xlsm
• .xlsx
• .xlt
• .xltm
• .xltx
• .xlw
• .xml
• .xps
• .xxx
• .ycbcra
• .yuv
• .zip

It deletes the initially executed copy of itself

NOTES:

Avoids encrypting files with the following filename: