Ransom_CERBER.LF
Windows

Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This Trojan may be downloaded by other malware/grayware from remote sites.
It executes then deletes itself afterward.
It is capable of encrypting files in the affected system.
TECHNICAL DETAILS
232,745 bytes
EXE
Yes
08 Sep 2016
Modifies files
Arrival Details
This Trojan may be downloaded by the following malware/grayware from remote sites:
- http://{BLOCKED}eavie.top/admin.php?f=1.bin
Installation
This Trojan drops the following files:
- {folders containing encrypted files}\# HELPDECRYPT #.html
- {folders containing encrypted files}\# HELPDECRYPT #.txt
- {folders containing encrypted files}\# HELPDECRYPT #.url
- %Desktop%\# HELPDECRYPT #.html
- %Desktop%\# HELPDECRYPT #.txt
- %Desktop%\# HELPDECRYPT #.url
- %Application Data%\{random file names}
- %Application Data%\{filename}.png
(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.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on 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.)
It executes then deletes itself afterward.
Other Details
This Trojan encrypts files with the following extensions:
- .1cd
- .3dm
- .3ds
- .3fr
- .3g2
- .3gp
- .3pr
- .7z
- .7zip
- .aac
- .ab4
- .abd
- .acc
- .accdb
- .accde
- .accdr
- .accdt
- .ach
- .acr
- .act
- .adb
- .adp
- .ads
- .agdl
- .ai
- .aiff
- .ait
- .al
- .aoi
- .apj
- .apk
- .arw
- .ascx
- .asf
- .asm
- .asp
- .aspx
- .asset
- .asx
- .atb
- .avi
- .awg
- .back
- .backup
- .backupdb
- .bak
- .bank
- .bay
- .bdb
- .bgt
- .bik
- .bin
- .bkp
- .blend
- .bmp
- .bpw
- .bsa
- .c
- .cash
- .cdb
- .cdf
- .cdr
- .cdr3
- .cdr4
- .cdr5
- .cdr6
- .cdrw
- .cdx
- .ce1
- .ce2
- .cer
- .cfg
- .cfn
- .cgm
- .cib
- .class
- .cls
- .cmt
- .config
- .contact
- .cpi
- .cpp
- .cr2
- .craw
- .crt
- .crw
- .cry
- .cs
- .csh
- .csl
- .css
- .csv
- .d3dbsp
- .dac
- .das
- .dat
- .db
- .db3
- .db_journal
- .dbf
- .dbx
- .dc2
- .dcr
- .dcs
- .ddd
- .ddoc
- .ddrw
- .dds
- .def
- .der
- .des
- .design
- .dgc
- .dgn
- .dit
- .djvu
- .dng
- .doc
- .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
- .flvv
- .forge
- .fpx
- .fxg
- .gbr
- .gho
- .gif
- .gray
- .grey
- .groups
- .gry
- .h
- .hbk
- .hdd
- .hpp
- .html
- .ibank
- .ibd
- .ibz
- .idx
- .iif
- .iiq
- .incpas
- .indd
- .info
- .info_
- .ini
- .iwi
- .jar
- .java
- .jnt
- .jpe
- .jpeg
- .jpg
- .js
- .json
- .k2p
- .kc2
- .kdbx
- .kdc
- .key
- .kpdx
- .kwm
- .laccdb
- .lbf
- .lck
- .ldf
- .lit
- .litemod
- .litesql
- .lock
- .log
- .ltx
- .lua
- .m
- .m2ts
- .m3u
- .m4a
- .m4p
- .m4v
- .ma
- .mab
- .mapimail
- .max
- .mbx
- .md
- .mdb
- .mdc
- .mdf
- .mef
- .mfw
- .mid
- .mkv
- .mlb
- .mmw
- .mny
- .money
- .moneywell
- .mos
- .mov
- .mp3
- .mp4
- .mpeg
- .mpg
- .mrw
- .msf
- .msg
- .myd
- .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
- .orf
- .ost
- .otg
- .oth
- .otp
- .ots
- .ott
- .p12
- .p7b
- .p7c
- .pab
- .pages
- .pas
- .pat
- .pbf
- .pcd
- .pct
- .pdb
- .pdd
- .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
- .rdb
- .re4
- .rm
- .rtf
- .rvt
- .rw2
- .rwl
- .rwz
- .s3db
- .safe
- .sas7bdat
- .sav
- .save
- .say
- .sd0
- .sda
- .sdb
- .sdf
- .sh
- .sldm
- .sldx
- .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
- .tax
- .tbb
- .tbk
- .tbn
- .tex
- .tga
- .thm
- .tif
- .tiff
- .tlg
- .tlx
- .txt
- .upk
- .usr
- .vbox
- .vdi
- .vhd
- .vhdx
- .vmdk
- .vmsd
- .vmx
- .vmxf
- .vob
- .vpd
- .vsd
- .wab
- .wad
- .wallet
- .war
- .wav
- .wb2
- .wma
- .wmf
- .wmv
- .wpd
- .wps
- .x11
- .x3f
- .xis
- .xla
- .xlam
- .xlk
- .xlm
- .xlr
- .xls
- .xlsb
- .xlsm
- .xlsx
- .xlt
- .xltm
- .xltx
- .xlw
- .xml
- .xps
- .xxx
- .ycbcra
- .yuv
- .zip
It renames encrypted files using the following names:
- {random name}.cerber3
It does the following:
- It sends out UDP packets via port 6892 that may flood subnets.
It is capable of encrypting files in the affected system.
SOLUTION
9.800
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Search and delete this file
Step 3
Scan your computer with your Trend Micro product to delete files detected as Ransom_CERBER.LF. 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.
Step 4
Restore encrypted files from backup.
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