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TROJ_UNRUY.SMJF

June 30, 2013
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites. However, as of this writing, the said sites are inaccessible.

It uses Windows Task Scheduler to create a scheduled task that executes the dropped copy.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

16 Jul 2010

Payload:

Connects to URLs/Ips

Arrival Details

This Trojan may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

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

Installation

This Trojan drops the following copies of itself into the affected system:

  • %Fonts%\{random name}.COM

(Note: %Fonts% is the Windows Fonts folder, which is usually C:\Window \Fonts on Windows 2000, XP, Server 2003, Vista, and 7.)

It uses Windows Task Scheduler to create a scheduled task that executes the dropped copy.

Other Details

This Trojan does the following:

  • It connects to the following websites to possibly download other files:
    • {BLOCKED}usands.cm
    • {BLOCKED}.{BLOCKED}.119.139
  • It does not perform its intended routine if the following processes are running:
    • scftray
    • scfservice
    • scfmanager
    • savser
    • savadmins
    • alsvc
    • almon
    • npfmsg2
    • zlh
    • zanda
    • cclaw
    • npfsvice
    • njeeves
    • nipsvc
    • nip
    • nvcsched
    • nvcoas
    • spidernt
    • spiderui
    • drweb
    • pxcons
    • pxagent
    • guardxkickoff
    • vba32ldr
    • nod32kui
    • nod32krn
    • vsserv
    • livesrv
    • bdmcon
    • bdagent
    • xcommsvr
    • PXConsole
    • PXAgent
    • kpf4ss
    • kpf4gui
    • sunthreate
    • sunserv
    • sunprotect
    • counter
    • clamwin
    • clamtray
    • avgnt
    • avguard
    • avesvc
    • avcenter
    • ashwebsv
    • ashdisp
    • ashmaisv
    • ashserv
    • msascui
    • fsguidll
    • fsaw
    • fspex
    • fsm32
    • tsanti
    • kavpf
    • kav
    • dpasnt
    • msfw
    • msmps
    • mpeng
    • msco
    • winssno
    • symlcsvc
    • spbbcsvc
    • sndsrvc
    • nscsrvce
    • navapsvc
    • ccsetmgr
    • ccproxy
    • ccetvm
    • ccapp
    • alusched
    • oascl
    • msksr
    • mskage
    • mscif
    • mpft
    • mpfser
    • mpfag
    • mcvss
    • mcvs
    • mcupd
    • mcupdm
    • mctsk
    • mcshi
    • mcdet
    • mcage
    • zlcli
    • vsmon
    • webroot
    • spysw
    • firewalln
    • vrmo
    • vrfw
    • hsock
    • wmiprv
    • mxtask
    • swdoct
    • sdhe
    • vir.exe
    • webproxy
    • pavfnsvr
    • avengine
    • avciman
    • apvxdwin
    • avp
    • cavtray
    • cavrid
    • caissdt
    • isafe
    • ad-watch

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.315.00

VSAPI PATTERN Date:

16 Jul 2010

VSAPI PATTERN Date:

7/16/2010 12:00:00 AM

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

Restart in Safe Mode

[ Learn More ]

Step 3

To delete the added job file:

  1. Click on Start>Programs>Accessories>System Tools>Scheduled Tasks
  2. Double-click on a job file.
  3. Check if the malware path and file name is in the Run: box.
  4. If it does, delete the job file.
  5. Repeat step 2-4 for the remaining job files.

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_UNRUY.SMJF. 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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