Modified by: Joachim Suico
ALIASES:

TrojanSpy:MSIL/Golroted.B (Microsoft); Trojan-Dropper.Win32.Autoit.bpz (Kaspersky); AIT:Trojan.Autoit.CBU (BitDefender)

 PLATFORM:

Windows

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware, Propagates via removable drives

This worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

  TECHNICAL DETAILS

File Size: 1,823,744 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 23 Feb 2015
Payload: Steals information

Arrival Details

This worm arrives via removable drives.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This worm drops the following files:

  • %Application Data%\WindowsUpdate.exe (detected as WORM_GOLROTED.SMV1)
  • %Application Data%\pid.txt
  • %Application Data%\pidloc.txt
  • %User Temp%\screens\screenshot{1, 2, 3, ...}.jpeg (takes screenshots every 10 minutes)

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops and executes the following files:

  • %User Temp%\7136\7136.exe (detected as WORM_GOLROTED.SMV1)

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Windows Update = "%Application Data%\WindowsUpdate.exe"

Other System Modifications

This worm adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
ESENT\Process\7136

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
ESENT\Process\7136\
DEBUG

Propagation

This worm drops the following copy(ies) of itself in all removable drives:

  • {Removable drive}:\Sys.exe

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

The said .INF file contains the following strings:

[autorun]
open=Sys.exe
action=Run win32

Download Routine

This worm connects to the following URL(s) to download its component file(s):

  • www.{BLOCKED}ad.{BLOCKED}update.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt
  • www.{BLOCKED}ad.{BLOCKED}update.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab
  • www.{BLOCKED}ad.{BLOCKED}update.com/msdownload/update/v3/static/trustedr/en/B1BC968BD4F49D622AA89A81F2150152A41D829C.crt

Information Theft

This worm gathers the following data:

  • Keylogger details
  • Server name
  • Keyboard logs
  • Clipboard logs
  • Time logs
  • Stealer details
  • System time
  • Installed language
  • Operating system
  • Internal IP address
  • External IP address
  • Installed Anti-virus
  • Installed Firewall

It attempts to steal stored email credentials from the following:

  • IncrediMail
  • Eudora
  • Group Mail Free
  • MS Outlook
  • MS Outlook 2002/2003/2007/2010
  • Gmail
  • Hotmail/MSN
  • Yahoo! Mail
  • Netscape Mail
  • Thunderbird
  • Google Desktop
  • Windows Mail
  • Windows Live Mail
  • Outlook 2013
  • Internet Account Manager

It attempts to get stored information such as user names, passwords, and hostnames from the following browsers:

  • IE
  • Firefox
  • Chrome
  • Chrome SxS
  • Opera
  • Safari
  • SeaMonkey

NOTES:

This worm access the following Simple Mail Transfer Protocol (SMTP) servers in preparation to send its stolen information:

  • smtp.live.com

It disables the following processes:

  • taskmgr.exe
  • cmd.exe
  • msconfig.exe
  • regedit.exe

It also searches for CD keys, product keys, and serial numbers of the following applications:

  • Spinter Cell Pandora Tomorrow
  • Splinter Cell Chaos Theory
  • Call of Duty
  • Call of Duty United Offensive
  • Call of Duty 2
  • Call of Duty 4
  • Call of Duty WAW
  • Dawn of Warm
  • Dawn of War - Dark Crusade
  • Medieval II Total War
  • Adobe Goolive
  • Nero 7
  • ACDSystems PicAView
  • Act of War
  • Adobe Photoshop 7
  • Advanced PDF Password Recovery
  • Advanced PDF Password Recovery Pro
  • Advanced ZIP Password Recovery
  • Anno 1701
  • Ashamopp WinOptimizer Platinum
  • AV Voice Changer, Battlefield(1942)
  • Battlefield 1942 Secret Weapons of WWII
  • Battlefield 1942 The Road to Rome
  • Battlefield 2, Battlefield(2142)
  • Battlefield Vietnam
  • Black and White
  • Black and White 2
  • Boulder Dash Rocks
  • Burnout Paradise
  • Camtasia Studio 4(Name)
  • Chrome, Codec Tweak Tool
  • Command and Conquer Generals
  • Command and Conquer Generals Zero Hour
  • Red Aler 2
  • Red Alert
  • Command and Conquer Tiberian Sun
  • Command and Conquer 3
  • Company of Heroes
  • Counter-Strike, Crysis
  • CyberLink PowerDVD
  • CyberLink PowerBar
  • CyberLink PowerProducer
  • Day of Defeat
  • The Battle for Middle-earth II
  • The Sims 2
  • The Sims 2 University
  • The Sims 2 Nightlife
  • The Sims 2 Open For Business
  • The Sims 2 Pets
  • The Sims 2 Seasons
  • The Sims 2 Glamour Life Stuff
  • The Sims 2 Celebration Stuff
  • The Sims 2 H M Fashion Stuff
  • The Sims 2 Family Fun Stuff
  • DVD Audio Extractor
  • Empire Earth II
  • F.E.A.R, F-Secure
  • FARCRY, FARCRY 2
  • FIFA 2002
  • FIFA 2003
  • FIFA 2004
  • FIFA 2005
  • FIFA 07
  • FIFA 08
  • Freedom Force
  • Frontlines: Fuel of War Beta
  • GetRight
  • Global Operations
  • Gunman, Half-Life
  • Hellgate: London
  • Hidden & Dangerous 2
  • IGI 2 Retail
  • InCD
  • iPod Converter
  • James Bond 007 Nightfire
  • Status Legends of Might and Mahic
  • Macromedia Flash 7
  • Macromedia Fireworks 7
  • Macromedia Dreamweaver 7
  • Madden NFL 07
  • Matrix Screensave
  • Medal of Honor Airborne
  • Medal of Honor Allied Assault
  • Medal of Honor Allied Assault: Breakthrough
  • Medal of Honor Allied Assault: Spearhead
  • Medal of Honor: Heroes 2
  • mIRC
  • Nascar Racing 2002
  • Nascar Racing 2003
  • NHL 2002
  • NBA LIVE 2003
  • NBA LIVE 2004
  • NBA LIVE 07
  • NBA Live 08
  • Need for Speed Carbon
  • Need for Speed Hot Pursuit 2
  • Need for Speed Most Wanted
  • Need for Speed ProStreet
  • Need for Speed Underground
  • Need for Speed Underground 2
  • Nero - Burning Rom
  • Nero 7
  • Nero 8
  • NHL 2003
  • NHL 2004
  • NHL 2005
  • NOX, Numega SmartCheck
  • Online TVPlayer
  • O&O Defrag 8.0
  • Partition Magic 8.0
  • Passware Encryption Analyzer
  • Passware Windows Key
  • PowerDVD, PowerStrip
  • Pro Evolution Soccer 2008
  • Rainbow Six III RavenShield
  • Shogun Total War Warlord Edition
  • Sid(Meier)'s Pirates!
  • Sim City 4 Deluxe
  • Sim City 4
  • Sniffer Pro 4.5
  • Soldiers of Anarchy
  • Stalker - Shadow of Chernobyl
  • Star Wars Battlefront II(v1.0)
  • Star Wars Battlefront II(v1.1)
  • Steganos Internet Anonym VPN
  • Supreme Commander
  • S.W.A.T 2
  • S.W.A.T 3
  • S.W.A.T 4
  • TechSmith SnagIt
  • Texas Calculatem 4
  • The Orange Box
  • TMPGEnc DVD Author
  • TuneUp 2007
  • TuneUp 2008
  • TuneUp 2009
  • Winamp
  • SPORE(TM)
  • Mirror's Edge
  • Half-Life
  • Halo
  • Grand Theft Auto IV
  • PES2009
  • Dead Space
  • Battlefield 2 Special Forces
  • Transformers2
  • Bully Scholarship Edition

  SOLUTION

Minimum Scan Engine: 9.750
FIRST VSAPI PATTERN FILE: 11.498.01
FIRST VSAPI PATTERN DATE: 23 Feb 2015
VSAPI OPR PATTERN File: 11.499.00
VSAPI OPR PATTERN Date: 23 Feb 2015

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Delete this registry key

[ 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.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\7136
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\7136\DEBUG

Step 5

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.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • Windows Update = "%Application Data%\WindowsUpdate.exe"

Step 6

Search and delete these files

[ Learn More ]
There may be some 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.
  • %Application Data%\pid.txt
  • %Application Data%\pidloc.txt
  • %User Temp%\screens\screenshot{1,2,3,...}.jpeg

Step 7

Restart in normal mode and scan your computer with your Trend Micro product for files detected as WORM_GOLROTED.D. 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.

Step 8

Scan your computer with your Trend Micro product to delete files detected as
WORM_GOLROTED.SMV1

*Note: 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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