XoristDecryptor is a handy tool that was designed in order to help you fight infections from Trojan-Ransom.Win32.Xorist malware.

Malware of the family Trojan-Ransom.Win32.Xorist is designed for unauthorized modification of data on a victim computer. It makes computers uncontrollable or blocks its normal performance. After taking the data as a “hostage” (blocking it), a ransom is demanded from the user.

The victim is supposed to deliver the ransom to the pirate, who is promising to send in return a program which would release the data or restore normal performance of the computer.

Signs of infection

· The user is displayed with messages demanding to send an SMS to decrypt the files. The text is in Cyrillic, so it possible that you will see some hieroglyphic symbols instead.
· Another sign is presence of a file named “Прочти Меня - как расшифровать файлы” on disk C.
· There is a file in the folder Windows named CryptLogFile.txt.

The trojan program encrypts all files with the following extensions:
doc, xls, docx, xlsx, db, mp3, waw, jpg, jpeg, txt, rtf, pdf, rar, zip, psd, msi, tif, wma, lnk, gif, bmp, ppt, pptx, docm, xlsm, pps, ppsx, ppd, tiff, eps, png, ace, djvu, xml, cdr, max, wmv, avi, wav, mp4, pdd, html, css, php, aac, ac3, amf, amr, mid, midi, mmf, mod, mp1, mpa, mpga, mpu, nrt, oga, ogg, pbf, ra, ram, raw, saf, val, wave, wow, wpk, 3g2, 3gp, 3gp2, 3mm, amx, avs, bik, bin, 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, aspx, asr, atom, 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, rnc, 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.