TROJ_POSHCODER.AB
Ransom:PowerShell/Poshkod.D (Microsoft), Win32/Filecoder.CS (ESET), Trojan-Ransom.Script.Agent.b (Kaspersky), Trojan.Cryptolocker (Symantec)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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
16,720 bytes
Script
Yes
14 Jul 2015
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.
Other Details
This Trojan encrypts files with the following extensions:
- .doc
- .xls
- .docx
- .xlsx
- .mp3
- .waw
- .jpg
- .jpeg
- .txt
- .rtf
- .rar
- .zip
- .psd
- .tif
- .wma
- .gif
- .bmp
- .ppt
- .pptx
- .docm
- .xlsm
- .pps
- .ppsx
- .ppd
- .eps
- .png
- .ace
- .djvu
- .tar
- .cdr
- .max
- .wmv
- .avi
- .wav
- .mp4
- .pdd
- .php
- .aac
- .ac3
- .amf
- .amr
- .dwg
- .dxf
- .accdb
- .mod
- .tax2013
- .tax2014
- .oga
- .ogg
- .pbf
- .ra
- .raw
- .saf
- .val
- .wave
- .wow
- .wpk
- .3g2
- .3gp
- .3gp2
- .3mm
- .amx
- .avs
- .bik
- .dir
- .divx
- .dvx
- .evo
- .flv
- .qtq
- .tch
- .rts
- .rum
- .rv
- .scn
- .srt
- .stx
- .svi
- .swf
- .trp
- .vdo
- .wm
- .wmd
- .wmmp
- .wmx
- .wvx
- .xvid
- .3d
- .3d4
- .3df8
- .pbs
- .adi
- .ais
- .amu
- .arr
- .bmc
- .bmf
- .cag
- .cam
- .dng
- .ink
- .jif
- .jiff
- .jpc
- .jpf
- .jpw
- .mag
- .mic
- .mip
- .msp
- .nav
- .ncd
- .odc
- .odi
- .opf
- .qif
- .qtiq
- .srf
- .xwd
- .abw
- .act
- .adt
- .aim
- .ans
- .asc
- .ase
- .bdp
- .bdr
- .bib
- .boc
- .crd
- .diz
- .dot
- .dotm
- .dotx
- .dvi
- .dxe
- .mlx
- .err
- .euc
- .faq
- .fdr
- .fds
- .gthr
- .idx
- .kwd
- .lp2
- .ltr
- .man
- .mbox
- .msg
- .nfo
- .now
- .odm
- .oft
- .pwi
- .rng
- .rtx
- .run
- .ssa
- .text
- .unx
- .wbk
- .wsh
- .7z
- .arc
- .ari
- .arj
- .car
- .cbr
- .cbz
- .gz
- .gzig
- .jgz
- .pak
- .pcv
- .puz
- .r00
- .r01
- .r02
- .r03
- .rev
- .sdn
- .sen
- .sfs
- .sfx
- .sh
- .shar
- .shr
- .sqx
- .tbz2
- .tg
- .tlz
- .vsi
- .wad
- .war
- .xpi
- .z02
- .z04
- .zap
- .zipx
- .zoo
- .ipa
- .isu
- .jar
- .js
- .udf
- .adr
- .ap
- .aro
- .asa
- .ascx
- .ashx
- .asmx
- .asp
- .indd
- .asr
- .qbb
- .bml
- .cer
- .cms
- .crt
- .dap
- .htm
- .moz
- .svr
- .url
- .wdgt
- .abk
- .bic
- .big
- .blp
- .bsp
- .cgf
- .chk
- .col
- .cty
- .dem
- .elf
- .ff
- .gam
- .grf
- .h3m
- .h4r
- .iwd
- .ldb
- .lgp
- .lvl
- .map
- .md3
- .mdl
- .mm6
- .mm7
- .mm8
- .nds
- .pbp
- .ppf
- .pwf
- .pxp
- .sad
- .sav
- .scm
- .scx
- .sdt
- .spr
- .sud
- .uax
- .umx
- .unr
- .uop
- .usa
- .usx
- .ut2
- .ut3
- .utc
- .utx
- .uvx
- .uxx
- .vmf
- .vtf
- .w3g
- .w3x
- .wtd
- .wtf
- .ccd
- .cd
- .cso
- .disk
- .dmg
- .dvd
- .fcd
- .flp
- .img
- .iso
- .isz
- .md0
- .md1
- .md2
- .mdf
- .mds
- .nrg
- .nri
- .vcd
- .vhd
- .snp
- .bkf
- .ade
- .adpb
- .dic
- .cch
- .ctt
- .dal
- .ddc
- .ddcx
- .dex
- .dif
- .dii
- .itdb
- .itl
- .kmz
- .lcd
- .lcf
- .mbx
- .mdn
- .odf
- .odp
- .ods
- .pab
- .pkb
- .pkh
- .pot
- .potx
- .pptm
- .psa
- .qdf
- .qel
- .rgn
- .rrt
- .rsw
- .rte
- .sdb
- .sdc
- .sds
- .sql
- .stt
- .t01
- .t03
- .t05
- .tcx
- .thmx
- .txd
- .txf
- .upoi
- .vmt
- .wks
- .wmdb
- .xl
- .xlc
- .xlr
- .xlsb
- .xltx
- .ltm
- .xlwx
- .mcd
- .cap
- .cc
- .cod
- .cp
- .cpp
- .cs
- .csi
- .dcp
- .dcu
- .dev
- .dob
- .dox
- .dpk
- .dpl
- .dpr
- .dsk
- .dsp
- .eql
- .ex
- .f90
- .fla
- .for
- .fpp
- .jav
- .java
- .lbi
- .owl
- .pl
- .plc
- .pli
- .pm
- .res
- .rsrc
- .so
- .swd
- .tpu
- .tpx
- .tu
- .tur
- .vc
- .yab
- .8ba
- .8bc
- .8be
- .8bf
- .8bi8
- .bi8
- .8bl
- .8bs
- .8bx
- .8by
- .8li
- .aip
- .amxx
- .ape
- .api
- .mxp
- .oxt
- .qpx
- .qtr
- .xla
- .xlam
- .xll
- .xlv
- .xpt
- .cfg
- .cwf
- .dbb
- .slt
- .bp2
- .bp3
- .bpl
- .clr
- .dbx
- .jc
- .potm
- .ppsm
- .prc
- .prt
- .shw
- .std
- .ver
- .wpl
- .xlm
- .yps
- .md3
- .1cd
NOTES:
It drops the following file once it successfully encrypts a file:
- DECRYPT_INSTRUCTION.html
SOLUTION
9.750
11.808.04
23 Jul 2015
11.809.00
24 Jul 2015
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 these files
- DECRYPT_INSTRUCTION.html
Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_POSHCODER.AB. 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.
NOTES:
Restore the encrypted files from backup.
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