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Copyright: Dr. Nikolai Bezroukov 1994-2013. Unpublished notes. Version 0.80.October, 2013
Contents : Foreword : Ch01 : Ch02 : Ch03 : Ch04 : Ch05 : Ch06 : Ch07 : Ch08 : Ch09 : Ch10 : Ch11 : Ch12 : Ch13
Chapter 11: Data Stealing Trojans
This is information form WORM_MORTO.SM by Trend Micro
| Aliases: Worm:Win32/Morto.A (Microsoft)Morto.A
- Learn more about … Malware type: Worm Destructive: No Platform: Windows 2000, Windows XP, Windows Server 2003 Encrypted: Yes In the wild: Yes |
Damage Potential: High
Distribution Potential: August 28, 2011 Windows Remote Desktop Worm Morto Spreading - F-Secure Weblog News from the LabReported Number of Infections: Low
Arrival Details
This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be dropped by the following malware:
Installation
This worm drops the following copies of itself into the affected system:
(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
It drops the following file(s)/component(s):
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
It drops the following non-malicious file:
(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.)
It injects itself into the following processes as part of its memory residency routine:
Other System Modifications
This worm adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\SYSTEM\WPA
it = "{hex values}"
HKEY_LOCAL_MACHINE\SYSTEM\WPA
id = "1293D1C15VAVUJTN"
HKEY_LOCAL_MACHINE\SYSTEM\WPA
ie = "%current folder%\{malware name}.exe"
HKEY_LOCAL_MACHINE\SYSTEM\WPA
md = "{garbage code}"
HKEY_LOCAL_MACHINE\SYSTEM\WPA
sn = "6to4"
HKEY_LOCAL_MACHINE\SYSTEM\WPA
sr = "Sens"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\Windows
NoPopUpsOnBoot = "1"
Process Termination
This worm terminates processes or services that contain any of the following strings if found running in the affected system's memory:
Other Details
This worm deletes the initially executed copy of itself
NOTES:
This worm creates a backup copy of its dropped file as %Windows%\clb.dll.bak.
The file %system%\clb.dll is a legitimate file which is used by regedit.exe. That is why the copy of this malware is placed in %Windows% directory is to trick regedit.exe that the dropped file is the component that it needs. Therefore, regedit.exe loads the malicious clb.dll into the system.
It listens to port 3389/TCP, the port for RDP, for possible enabled Remote Desktop. This worm searches for Remote Desktop Servers, and tries to log-in as Administrator using the following usernames:
It also tries the following passwords:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
ConsentPromptBehaviorAdmin=0
EnableLUA=0
[HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers]
c:\\windows\\system32\\rundll32.exe=RUNASADMIN
d:\\windows\\system32\\rundll32.exe=RUNASADMIN
e:\\windows\\system32\\rundll32.exe=RUNASADMIN
f:\\windows\\system32\\rundll32.exe=RUNASADMIN
g:\\windows\\system32\\rundll32.exe=RUNASADMIN
h:\\windows\\system32\\rundll32.exe=RUNASADMIN
i:\\windows\\system32\\rundll32.exe=RUNASADMIN
c:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
d:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
e:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
f:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
g:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
h:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
i:\\windows\\SysWOW64\\rundll32.exe=RUNASADMIN
c:\\winnt\\system32\\rundll32.exe=RUNASADMIN
c:\\win2008\\system32\\rundll32.exe=RUNASADMIN
c:\\win2k8\\system32\\rundll32.exe=RUNASADMIN
c:\\win7\\system32\\rundll32.exe=RUNASADMIN
c:\\windows7\\system32\\rundll32.exe=RUNASADMIN
Minimum scan engine: 9.200 First VSAPI Pattern File: 8.390.05 First VSAPI Pattern Release Date: 30 Aug 2011 VSAPI OPR Pattern Version: 8.391.00 VSAPI OPR Pattern Release Date: 31 Aug 2011 Step 1 For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer. Step 2Remove malware/grayware files that dropped/downloaded WORM_MORTO.SM Step 3 Restart in Safe Mode [ Learn more ]Step 4 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.
Step 5 Search and delete these files [ Learn more ]There may be some component 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.
Step 6 Restart in normal mode and scan your computer with your
Trend Micro product for files detected as WORM_MORTO.SM. 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. Did this description help? Tell us how we did. |
Society
Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers : Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism : The Iron Law of Oligarchy : Libertarian Philosophy
Quotes
War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda : SE quotes : Language Design and Programming Quotes : Random IT-related quotes : Somerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose Bierce : Bernard Shaw : Mark Twain Quotes
Bulletin:
Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 : Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law
History:
Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds : Larry Wall : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOS : Programming Languages History : PL/1 : Simula 67 : C : History of GCC development : Scripting Languages : Perl history : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history
Classic books:
The Peter Principle : Parkinson Law : 1984 : The Mythical Man-Month : How to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Hater’s Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite
Most popular humor pages:
Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor
The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D
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Last modified: March, 12, 2019
