Ransom.Win32.RADAMCRYPT.A

 Analysis by: Kennard Yap

 ALIASES:

Ransom:Win32/Radamcrypt.A (MICROSOFT); Trojan-Ransom.Win32.Radam.d (KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet

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 connects to a website to send and receive information.

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

158,134 bytes

File Type:

EXE

Memory Resident:

Yes

Payload:

Connects to URLs/IPs, Displays message/message boxes, Encrypts files

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 component file(s):

  • aaa.bat = used to delete original copy

It adds the following mutexes to ensure that only one of its copies runs at any one time:

  • Radamant_v1_Klitschko_number_one

Autostart Technique

This Ransomware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
svchost = {full malware path and filename}

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
svchost = {full malware path and filename}

Other System Modifications

This Ransomware uses Windows Management Instrumentation (WMI) to delete volume shadow copies:

  • cmd.exe /c vssadmin delete shadows /all /quiet

Backdoor Routine

This Ransomware connects to the following websites to send and receive information:

  • {BLOCKED}.{BLOCKED}.202.192
  • {BLOCKED}.{BLOCKED}.80.28
  • {BLOCKED}.{BLOCKED}.97.93

Other Details

This Ransomware connects to the following URL(s) to get the affected system's IP address:

  • checkip.dyndns.org

It connects to the following possibly malicious URL:

  • {BLOCKED}d.pw/ld/id=2d302105104a17b023f118c20f22758c - contains the ransomnote

It encrypts files with the following extensions:

  • 1cd
  • dbf
  • dt
  • cf
  • cfu
  • mxl
  • epf
  • kdbx
  • erf
  • vrp
  • grs
  • geo
  • st
  • pff
  • mft
  • efd
  • 3dm
  • 3ds
  • rib
  • ma
  • sldasm
  • sldprt
  • max
  • blend
  • lwo
  • lws
  • m3d
  • mb
  • obj
  • x
  • x3d
  • movie.byu
  • c4d
  • fbx
  • dgn
  • dwg
  • 4db
  • 4dl
  • 4mp
  • abs
  • accdb
  • accdc
  • accde
  • accdr
  • accdt
  • accdw
  • accft
  • adn
  • a3d
  • adp
  • aft
  • ahd
  • alf
  • ask
  • awdb
  • azz
  • bdb
  • bib
  • bnd
  • bok
  • btr
  • bak
  • backup
  • cdb
  • ckp
  • clkw
  • cma
  • crd
  • daconnections
  • dacpac
  • dad
  • dadiagrams
  • daf
  • daschema
  • db
  • db-shm
  • db-wal
  • db2
  • db3
  • dbc
  • dbk
  • dbs
  • dbt
  • dbv
  • dbx
  • dcb
  • dct
  • dcx
  • ddl
  • df1
  • dmo
  • dnc
  • dp1
  • dqy
  • dsk
  • dsn
  • dta
  • dtsx
  • dxl
  • eco
  • ecx
  • edb
  • emd
  • eql
  • fcd
  • fdb
  • fic
  • fid
  • fil
  • fm5
  • fmp
  • fmp12
  • fmpsl
  • fol
  • fp3
  • fp4
  • fp5
  • fp7
  • fpt
  • fpt
  • fzb
  • fzv
  • gdb
  • gwi
  • hdb
  • his
  • ib
  • idc
  • ihx
  • itdb
  • itw
  • jtx
  • kdb
  • lgc
  • maq
  • mdb
  • mdbhtml
  • mdf
  • mdn
  • mdt
  • mrg
  • mud
  • mwb
  • s3m
  • myd
  • ndf
  • ns2
  • ns3
  • ns4
  • nsf
  • nsf
  • nv2
  • nyf
  • oce
  • odb
  • oqy
  • ora
  • orx
  • owc
  • owg
  • oyx
  • p96
  • p97
  • pan
  • pdb
  • pdb
  • pdb
  • pdm
  • phm
  • pnz
  • pth
  • pwa
  • qpx
  • qry
  • qvd
  • rctd
  • rdb
  • rpd
  • rsd
  • sbf
  • sdb
  • sdb
  • sdb
  • sdf
  • spq
  • sqb
  • stp
  • sql
  • sqlite
  • sqlite3
  • sqlitedb
  • str
  • tcx
  • tdt
  • te
  • teacher
  • tmd
  • trm
  • udb
  • usr
  • v12
  • vdb
  • vpd
  • wdb
  • wmdb
  • xdb
  • xld
  • xlgc
  • zdb
  • zdc
  • cdr
  • cdr3
  • ppt
  • pptx
  • 1st
  • abw
  • act
  • aim
  • ans
  • apt
  • asc
  • ascii
  • ase
  • aty
  • awp
  • awt
  • aww
  • bad
  • bbs
  • bdp
  • bdr
  • bean
  • bib
  • bna
  • boc
  • btd
  • bzabw
  • chart
  • chord
  • cnm
  • crd
  • crwl
  • cyi
  • dca
  • dgs
  • diz
  • dne
  • doc
  • doc
  • docm
  • docx
  • docxml
  • docz
  • dot
  • dotm
  • dotx
  • dsv
  • dvi
  • dx
  • eio
  • eit
  • email
  • emlx
  • epp
  • err
  • err
  • etf
  • etx
  • euc
  • fadein
  • faq
  • fb2
  • fbl
  • fcf
  • fdf
  • fdr
  • fds
  • fdt
  • fdx
  • fdxt
  • fes
  • fft
  • flr
  • fodt
  • fountain
  • gtp
  • frt
  • fwdn
  • fxc
  • gdoc
  • gio
  • gio
  • gpn
  • gsd
  • gthr
  • gv
  • hbk
  • hht
  • hs
  • htc
  • hwp
  • hz
  • idx
  • iil
  • ipf
  • jarvis
  • jis
  • joe
  • jp1
  • jrtf
  • kes
  • klg
  • klg
  • knt
  • kon
  • kwd
  • latex
  • lbt
  • lis
  • lit
  • lnt
  • lp2
  • lrc
  • lst
  • lst
  • ltr
  • ltx
  • lue
  • luf
  • lwp
  • lxfml
  • lyt
  • lyx
  • man
  • map
  • mbox
  • md5txt
  • me
  • mell
  • min
  • mnt
  • msg
  • mwp
  • nfo
  • njx
  • notes
  • now
  • nwctxt
  • nzb
  • ocr
  • odm
  • odo
  • odt
  • ofl
  • oft
  • openbsd
  • ort
  • ott
  • p7s
  • pages
  • pfs
  • pfx
  • pjt
  • plantuml
  • prt
  • psw
  • pu
  • pvj
  • pvm
  • pwi
  • pwr
  • qdl
  • rad
  • readme
  • rft
  • ris
  • rng
  • rpt
  • rst
  • rt
  • rtd
  • rtf
  • rtx
  • run
  • rzk
  • rzn
  • saf
  • safetext
  • sam
  • scc
  • scm
  • scriv
  • scrivx
  • sct
  • scw
  • sdm
  • sdoc
  • sdw
  • sgm
  • sig
  • skcard
  • sla
  • slagz
  • sls
  • smf
  • sms
  • ssa
  • strings
  • stw
  • sty
  • sub
  • sxg
  • sxw
  • tab
  • tdf
  • tdf
  • tex
  • text
  • thp
  • tlb
  • tm
  • tmd
  • tmv
  • tmx
  • tpc
  • trelby
  • tvj
  • txt
  • u3d
  • u3i
  • unauth
  • unx
  • uof
  • uot
  • upd
  • utf8
  • unity
  • utxt
  • vct
  • vnt
  • vw
  • wbk
  • wbk
  • wcf
  • webdoc
  • wgz
  • wn
  • wp
  • wp4
  • wp5
  • wp6
  • wp7
  • wpa
  • wpd
  • wpd
  • wpl
  • wps
  • wps
  • wpt
  • wpw
  • wri
  • wsc
  • wsd
  • wsh
  • wtx
  • xbdoc
  • xbplate
  • xdl
  • xdl
  • xlf
  • xps
  • xwp
  • xwp
  • xwp
  • xy3
  • xyp
  • xyw
  • ybk
  • yml
  • zabw
  • zw
  • 2bp
  • 0,36
  • 3fr
  • 0,411
  • 73i
  • 8xi
  • 9png
  • abm
  • afx
  • agif
  • agp
  • aic
  • albm
  • apd
  • apm
  • apng
  • aps
  • apx
  • art
  • artwork
  • arw
  • arw
  • asw
  • avatar
  • bay
  • blkrt
  • bm2
  • bmp
  • bmx
  • bmz
  • brk
  • brn
  • brt
  • bss
  • bti
  • c4
  • cal
  • cals
  • can
  • cd5
  • cdc
  • cdg
  • cimg
  • cin
  • cit
  • colz
  • cpc
  • cpd
  • cpg
  • cps
  • cpx
  • cr2
  • ct
  • dc2
  • dcr
  • dds
  • dgt
  • dib
  • dicom
  • djv
  • djvu
  • dm3
  • dmi
  • vue
  • dpx
  • wire
  • drz
  • dt2
  • dtw
  • dvl
  • ecw
  • eip
  • erf
  • exr
  • fal
  • fax
  • fil
  • fpos
  • fpx
  • g3
  • gcdp
  • gfb
  • gfie
  • ggr
  • gif
  • gih
  • gim
  • gmbck
  • gmspr
  • spr
  • scad
  • gpd
  • gro
  • grob
  • hdp
  • hdr
  • hpi
  • i3d
  • icn
  • icon
  • icpr
  • iiq
  • info
  • int
  • ipx
  • itc2
  • iwi
  • j
  • j2c
  • j2k
  • jas
  • jb2
  • jbig
  • jbig2
  • jbmp
  • jbr
  • jfif
  • jia
  • jng
  • jp2
  • jpe
  • jpeg
  • jpg
  • jpg2
  • jps
  • jpx
  • jtf
  • jwl
  • jxr
  • kdc
  • kdi
  • kdk
  • kic
  • kpg
  • lbm
  • ljp
  • mac
  • mbm
  • mef
  • mnr
  • mos
  • mpf
  • mpo
  • mrxs
  • myl
  • ncr
  • nct
  • nlm
  • nrw
  • oc3
  • oc4
  • oc5
  • oci
  • omf
  • oplc
  • af2
  • af3
  • ai
  • art
  • asy
  • cdmm
  • cdmt
  • cdmtz
  • cdmz
  • cdt
  • cgm
  • cmx
  • cnv
  • csy
  • cv5
  • cvg
  • cvi
  • cvs
  • cvx
  • cwt
  • cxf
  • dcs
  • ded
  • design
  • dhs
  • dpp
  • drw
  • drw
  • dxb
  • dxf
  • egc
  • emf
  • ep
  • eps
  • epsf
  • fh10
  • fh11
  • fh3
  • fh4
  • fh5
  • fh6
  • fh7
  • fh8
  • fif
  • fig
  • fmv
  • ft10
  • ft11
  • ft7
  • ft8
  • ft9
  • ftn
  • fxg
  • gdraw
  • gem
  • glox
  • gsd
  • hpg
  • hpgl
  • hpl
  • idea
  • igt
  • igx
  • imd
  • ink
  • lmk
  • mgcb
  • mgmf
  • mgmt
  • mt9
  • mgmx
  • mgtx
  • mmat
  • mat
  • otg
  • ovp
  • ovr
  • pcs
  • pfd
  • pfv
  • pl
  • plt
  • pm
  • vrml
  • pmg
  • pobj
  • ps
  • psid
  • rdl
  • scv
  • sk1
  • sk2
  • slddrt
  • snagitstamps
  • snagstyles
  • ssk
  • stn
  • svf
  • svg
  • svgz
  • sxd
  • tlc
  • tne
  • ufr
  • vbr
  • vec
  • vml
  • vsd
  • vsdm
  • vsdx
  • vstm
  • stm
  • vstx
  • wmf
  • wpg
  • vsm
  • vault
  • xar
  • xmind
  • xmmap
  • yal
  • orf
  • ota
  • oti
  • ozb
  • ozj
  • ozt
  • pal
  • pano
  • pap
  • pbm
  • pc1
  • pc2
  • pc3
  • pcd
  • pcx
  • pdd
  • pdn
  • pe4
  • pe4
  • pef
  • pfi
  • pgf
  • pgm
  • pi1
  • pi2
  • pi3
  • pic
  • pict
  • pix
  • pjpeg
  • pjpg
  • pm
  • pmg
  • png
  • pni
  • pnm
  • pntg
  • pop
  • pp4
  • pp5
  • ppm
  • prw
  • psd
  • psdx
  • pse
  • psp
  • pspbrush
  • ptg
  • ptx
  • ptx
  • pvr
  • px
  • pxr
  • pz3
  • pza
  • pzp
  • pzs
  • z3d
  • qmg
  • ras
  • rcu
  • rgb
  • rgb
  • rgf
  • ric
  • riff
  • rix
  • rle
  • rli
  • rpf
  • rri
  • rs
  • rsb
  • rsr
  • rw2
  • rwl
  • s2mv
  • sai
  • sci
  • sct
  • sep
  • sfc
  • sfera
  • sfw
  • skm
  • sld
  • sob
  • spa
  • spe
  • sph
  • spj
  • spp
  • sr2
  • srw
  • ste
  • sumo
  • sva
  • save
  • ssfn
  • t2b
  • tb0
  • tbn
  • tex
  • tfc
  • tg4
  • thm
  • thumb
  • tif
  • tiff
  • tjp
  • tm2
  • tn
  • tpi
  • ufo
  • uga
  • usertile-ms
  • vda
  • vff
  • vpe
  • vst
  • wb1
  • wbc
  • wbd
  • wbm
  • wbmp
  • wbz
  • wdp
  • webp
  • wpb
  • wpe
  • wvl
  • x3f
  • y
  • ysp
  • zif
  • cdr4
  • cdr6
  • rtf
  • cdrw
  • jpeg
  • djvu
  • pdf
  • ddoc
  • css
  • pptm
  • raw
  • cpt
  • gif
  • jpeg
  • jpg
  • jpe
  • jp2
  • pcx
  • pdn
  • png
  • psd
  • tga
  • tiff
  • tif
  • hdp
  • xpm
  • ai
  • cdr
  • ps
  • svg
  • sai
  • wmf
  • emf
  • ani
  • apng
  • djv
  • flc
  • fb2
  • fb3
  • fli
  • mng
  • smil
  • svg
  • mobi
  • swf
  • html
  • xls
  • xlsx
  • csv
  • xlsm
  • ods
  • xhtm

It does the following:

  • Encrypt files in all drives.
  • After payment it shows the following:




However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.752.03

FIRST VSAPI PATTERN DATE:

19 Mar 2020

VSAPI OPR PATTERN File:

15.753.00

VSAPI OPR PATTERN Date:

20 Mar 2020

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     
    • Troj.Win32.TRX.XXPE50FFF034

Step 2

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 3

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 4

Restart in Safe Mode

[ Learn More ]

Step 5

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • svchost = {full malware path and filename}
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • svchost = {full malware path and filename}

Step 6

Search and delete these files

[ 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.
  • aaa.bat

Step 7

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.RADAMCRYPT.A. 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 8

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.RADAMCRYPT.A. 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 9

Restore encrypted files from backup.


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