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RTKT_NECURS.AC

April 09, 2013
 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Others

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This malware may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

64,256 bytes

File Type:

SYS

Memory Resident:

Yes

Initial Samples Received Date:

08 Apr 2013

Arrival Details

This malware may be dropped by the following malware:

  • BKDR_NECURS.AC

Rootkit Capabilities

This malware is used by other malware for its rootkit functionalities.

NOTES:

This malware disables services used by the following companies by modifying its code to return to unsuccessful status:

  • Agnitum Ltd
  • ALWIL Software
  • Anti-Virus
  • antimalware
  • Avira GmbH
  • Beijing Jiangmin
  • Beijing Rising
  • BITDEFENDER LLC
  • BitDefender SRL
  • BullGuard Ltd
  • Check Point Software Technologies Ltd
  • CJSC Returnil Software
  • Comodo Inc
  • Comodo Security Solutions
  • Doctor Web Ltd
  • ESET, spol. s r.o.
  • FRISK Software International Ltd
  • G DATA Software
  • GRISOFT, s.r.o.
  • Immunet Corporation
  • K7 Computing
  • Kaspersky Lab
  • KProcessHacker
  • NovaShield Inc
  • Panda Software International
  • PC Tools
  • Quick Heal Technologies
  • Sophos Plc
  • Sunbelt Software
  • Symantec Corporation
  • VirusBuster Ltd

It disables drivers with the following name by modifying its code to return to unsuccessful status:

  • a2acc.sys
  • a2acc64.sys
  • a2gffi64.sys
  • a2gffx64.sys
  • a2gffx86.sys
  • ahnflt2k.sys
  • AhnRec2k.sys
  • AhnRghLh.sys
  • amfsm.sys
  • amm6460.sys
  • amm8660.sys
  • AntiLeakFilter.sys
  • antispyfilter.sys
  • AntiyFW.sys
  • ArfMonNt.sys
  • AshAvScan.sys
  • aswmonflt.sys
  • AszFltNt.sys
  • ATamptNt.sys
  • AVC3.SYS
  • AVCKF.SYS
  • avgmfi64.sys
  • avgmfrs.sys
  • avgmfx64.sys
  • avgmfx86.sys
  • avgntflt.sys
  • avmf.sys
  • BdFileSpy.sys
  • bdfm.sys
  • bdfsfltr.sys
  • caavFltr.sys
  • catflt.sys
  • cmdguard.sys
  • csaav.sys
  • cwdriver.sys
  • dkprocesshacker.sys
  • drivesentryfilterdriver2lite.sys
  • dwprot.sys
  • eamonm.sys
  • eeCtrl.sys
  • eeyehv.sys
  • eeyehv64.sys
  • eraser.sys
  • EstRkmon.sys
  • EstRkr.sys
  • fildds.sys
  • fortimon2.sys
  • fortirmon.sys
  • fortishield.sys
  • fpav_rtp.sys
  • fsfilter.sys
  • fsgk.sys
  • ggc.sys
  • HookCentre.sys
  • HookSys.sys
  • ikfilesec.sys
  • ino_fltr.sys
  • issfltr.sys
  • issregistry.sys
  • K7Sentry.sys
  • klbg.sys
  • kldback.sys
  • kldlinf.sys
  • kldtool.sys
  • klif.sys
  • kmkuflt.sys
  • KmxAgent.sys
  • KmxAMRT.sys
  • KmxAMVet.sys
  • KmxStart.sys
  • lbd.sys
  • MaxProtector.sys
  • mbam.sys
  • mfehidk.sys
  • mfencoas.sys
  • MiniIcpt.sys
  • mpFilter.sys
  • NanoAVMF.sys
  • NovaShield.sys
  • nprosec.sys
  • nregsec.sys
  • nvcmflt.sys
  • NxFsMon.sys
  • OADevice.sys
  • OMFltLh.sys
  • PCTCore.sys
  • PCTCore64.sys
  • pervac.sys
  • PktIcpt.sys
  • PLGFltr.sys
  • PSINFILE.SYS
  • PSINPROC.SYS
  • pwipf6.sys
  • PZDrvXP.sys
  • Rtw.sys
  • rvsmon.sys
  • sascan.sys
  • savant.sys
  • savonaccess.sys
  • SCFltr.sys
  • SDActMon.sys
  • SegF.sys
  • shldflt.sys
  • SMDrvNt.sys
  • snscore.sys
  • Spiderg3.sys
  • SRTSP.sys
  • SRTSP64.SYS
  • SRTSPIT.sys
  • ssfmonm.sys
  • ssvhook.sys
  • STKrnl64.sys
  • strapvista.sys
  • strapvista64.sys
  • THFilter.sys
  • tkfsavxp.sys
  • tkfsavxp64.sys
  • tkfsft.sys
  • tkfsft64.sys
  • tmevtmgr.sys
  • tmpreflt.sys
  • UFDFilter.sys
  • v3engine.sys
  • V3Flt2k.sys
  • V3Flu2k.sys
  • V3Ift2k.sys
  • V3IftmNt.sys
  • V3MifiNt.sys
  • Vba32dNT.sys
  • vcdriv.sys
  • vchle.sys
  • vcMFilter.sys
  • vcreg.sys
  • vradfil2.sys
  • win32k.sys
  • ZxFsFilt.sys

  SOLUTION

Minimum Scan Engine:

9.300

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

Remove the malware/grayware file that dropped/downloaded RTKT_NECURS.AC

Step 3

Scan your computer with your Trend Micro product to delete files detected as RTKT_NECURS.AC. 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.


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