Prevx Research Division
YAHOO.EXE
Cloaked MalwareFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove YAHOO.EXE.
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Cloaked Malware
- Malicious Software
File Behavior
YAHOO.EXE has been seen to perform the following behavior:
- Can Send email using SMTP protocols
- This Process sends MIME Email
- This Process Contains User Mode Rootkit Functionality and can hide itself from the running process list
- Adds a Registry Key (RUN) to auto start Programs on system start up
- This process creates other processes on disk
- Enables an In Process Object/Server - Common with DLL Injections
- Looks at the contents of the autoexec.bat file
- Reads email address and phone book details
- Uses DNS to retrieve the IP address for web sites
- The Process is polymorphic and can change its structure
- Creates system tray popups, messages, errors and security warnings
- Found on infected systems and resists interrogation by security products
- Uses low level functions to hide itself from the user and from system/security processes
- Registers a Dynamic Link Library File
- Injects code into other processes
- Performs DNS look ups to resolve URL IP addresses
- The Process is packed and/or encrypted using a software packing process
- Uses your PC to connect to Chat rooms
- Opens browser pop ups
- Runs Javascript code
YAHOO.EXE has been the subject of the following behavior:
- Executed as a Process
- Created as a process on disk
- Added as a Registry auto start to load Program on Boot up
- Created by processes which appear to be checking for interception by security products
- Copied to multiple locations on the system
Country Of Origin
The filename YAHOO.EXE was first seen on May 17 2007 in the following geographical regions of the Webroot community:
- The United States on May 17 2007
- Turkey on May 17 2007
- Spain on Oct 14 2007
- Canada on Nov 2 2007
- Algeria on Jun 9 2008
- Chile on Aug 15 2009
- The United Kingdom on May 1 2012
File Name Aliases
YAHOO.EXE can also use the following file names:
- TEST (nnn).EXE
- GANGSIR.CN (nn).EXE
- KEYLOG.EXE
- CDMON.EXE
- XPT.EXE
- XXX.EXE
- ASF.EXE
- WINDOWS.EXE
- SCHOSS.EXE
- A7MED.EXE
- WINSYS.EXE
- HALO AIMBOT.EXE
- WINWOAR.EXE
- JICA.EXE
- AGUSMUNSU.EXE
- WESLEY.EXE
- BENNETTON.EXE
- SYSTEM.EXE
- THEFORCEENGAGEMENT.EXE
- MEK.EXE
- GAMES.EXE
- SVHOST.EXE
- CIQGE.EXE
- NGUXG.EXE
- MFRVJ.EXE
- ZNQCS.EXE
- INGKM.EXE
- MQITS.EXE
- YLWNW.EXE
- JDOQG.EXE
- GDRDZ.EXE
- XQGXY.EXE
- QMUVO.EXE
- PMAIT.EXE
- WLAIV.EXE
- CUPVV.EXE
- HUONT.EXE
- BBMEG.EXE
- XOOWO.EXE
- WWIWI.EXE
- PXFDF.EXE
- MAJWX.EXE
- MOMHQ.EXE
- UUVWJ.EXE
- NFESG.EXE
- SUDYL.EXE
- ZHCTB.EXE
- BYSCZ.EXE
- TCAPC.EXE
- IOXMW.EXE
- DDCUZ.EXE
- VHEIY.EXE
- UHWNW.EXE
- LUKDZ.EXE
- MNULJ.EXE
- DJWLT.EXE
- MRUGM.EXE
- SKPCJ.EXE
- BVJDE.EXE
- DNPPG.EXE
- YFPYB.EXE
- BFRZY.EXE
- UZLEJ.EXE
- CVGIF.EXE
- QBBQP.EXE
- KMIHK.EXE
- VUAZF.EXE
- AXXJJ.EXE
- RTFQH.EXE
- NTVQF.EXE
- EZAPN.EXE
- EZYMJ.EXE
- CFMKW.EXE
- JYKRP.EXE
- QYLAZ.EXE
- IIHTP.EXE
- KIFTJ.EXE
- SULYS.EXE
- VCNXR.EXE
- VRNNC.EXE
- MRCEZ.EXE
- TQFOX.EXE
- SDVRX.EXE
- VILSK.EXE
- MMRAF.EXE
- RVZEU.EXE
- COEGQ.EXE
- QIRXN.EXE
- TUOZD.EXE
- IKWCG.EXE
- WLNFB.EXE
- DBRBE.EXE
- HGYWI.EXE
- DUZOR.EXE
- GZGQF.EXE
- KFHBF.EXE
- ZMTKX.EXE
- GYAGH.EXE
- UPXQR.EXE
- AFAVH.EXE
- SILPT.EXE
- PHZKJ.EXE
- GWOWD.EXE
- VNOFP.EXE
- SVACE.EXE
- APRLT.EXE
- SQWQG.EXE
- QMDZM.EXE
- PGYCV.EXE
- WRXSZ.EXE
- AOJLN.EXE
- OWHQM.EXE
- HBGSU.EXE
- MKBVC.EXE
- QVTPN.EXE
- IQNLA.EXE
- XJBOW.EXE
- YCLYW.EXE
- XCGCF.EXE
- BPK.EXE
- 21174612.SVD
Filesizes
The following file size has been seen:
- 397,312 bytes
- 30,315 bytes
- 20,480 bytes
- 581,632 bytes
- 113,695,744 bytes
- 32,768 bytes
File Type
The filename YAHOO.EXE refers to many versions of an executable program.
File Activity
One or more files with the name YAHOO.EXE creates, deletes, copies or moves the following files and folders:
- Opens/modifes c:\autoexec.bat
Website Activity
One or more files with the name YAHOO.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1092 Port:20
- Port 80 IP:64.27.17.205
- Port 80 IP:84.45.224.15
- Port 80 IP:209.85.49.76
- Port 80 IP:209.85.48.93
- Port 80 IP:84.53.137.34
- Port 80 IP:66.102.9.127
- Port 80 IP:209.85.48.90
- Port 80 IP:84.53.137.27
- Port 80 IP:4.71.209.2
- Port 80 IP:76.74.249.30
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