Trojan.PWS.Stealer.27183

Technical Information

To ensure autorun and distribution

Creates or modifies the following files

<SYSTEM32>\tasks\windows update 6ae8eedc
<SYSTEM32>\tasks\windows update 22074eed
<SYSTEM32>\tasks\windows update 7e71d810
<SYSTEM32>\tasks\windows update e334b5d8
<SYSTEM32>\tasks\windows update d5098d1a

Malicious functions

Installs hooks to intercept notifications

on keystrokes:

Handler for all processes: %PROGRAMDATA%\10205cb3f4d3\13235fb0f7d0.dat

Searches for registry branches where third party applications store passwords

[<HKCU>\Software\Far Manager\Plugins\FTP\Hosts]
[<HKLM>\Software\Wow6432Node\SimonTatham\PuTTY\Sessions]
[<HKCU>\Software\SimonTatham\PuTTY\Sessions]
[<HKCU>\Software\LinasFTP\Site Manager]
[<HKLM>\SOFTWARE\Wow6432Node\Robo-FTP 3.7\Scripts]
[<HKCU>\SOFTWARE\Robo-FTP 3.7\Scripts]
[<HKLM>\SOFTWARE\Wow6432Node\Robo-FTP 3.7\FTPServers]
[<HKCU>\SOFTWARE\Robo-FTP 3.7\FTPServers]
[<HKCU>\SOFTWARE\NCH Software\Fling\Accounts]
[<HKCU>\Software\FlashPeak\BlazeFtp\Settings]
[<HKCU>\Software\South River Technologies\WebDrive\Connections]
[<HKLM>\Software\Wow6432Node\Martin Prikryl]
[<HKCU>\Software\Martin Prikryl]
[<HKLM>\Software\Wow6432Node\SoftX.org\FTPClient\Sites]
[<HKCU>\Software\SoftX.org\FTPClient\Sites]
[<HKLM>\Software\Wow6432Node\FTPClient\Sites]
[<HKCU>\Software\FTPClient\Sites]
[<HKLM>\Software\Wow6432Node\South River Technologies\WebDrive\Connections]
[<HKLM>\SOFTWARE\Wow6432Node\NCH Software\Fling\Accounts]
[<HKCU>\Software\CoffeeCup Software]
[<HKLM>\Software\Wow6432Node\RimArts\B2\Settings]
[<HKCU>\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
[<HKLM>\Software\Wow6432Node\Microsoft\Internet Account Manager]
[<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Internet Account Manager\Accounts]
[<HKCU>\Software\Microsoft\Internet Account Manager\Accounts]
[<HKLM>\Software\Wow6432Node\RIT\The Bat!\Users depot]
[<HKLM>\Software\Wow6432Node\RIT\The Bat!]
[<HKCU>\Software\RIT\The Bat!\Users depot]
[<HKCU>\Software\MAS-Soft\FTPInfo\Setup]
[<HKLM>\Software\Wow6432Node\CoffeeCup Software]
[<HKCU>\Software\RimArts\B2\Settings]
[<HKCU>\Software\Microsoft\Windows Mail]
[<HKCU>\Software\Microsoft\Windows Live Mail]
[<HKLM>\Software\Wow6432Node\Nico Mak Computing\WinZip\mru\jobs]
[<HKCU>\Software\Nico Mak Computing\WinZip\mru\jobs]
[<HKLM>\Software\Wow6432Node\Nico Mak Computing\WinZip\FTP]
[<HKCU>\Software\Nico Mak Computing\WinZip\FTP]
[<HKCU>\Software\RIT\The Bat!]
[<HKCU>\Software\NCH Software\ClassicFTP\FTPAccounts]
[<HKLM>\Software\Wow6432Node\NCH Software\ClassicFTP\FTPAccounts]
[<HKCU>\Software\ExpanDrive\Sessions]
[<HKCU>\Software\FlashFXP\3]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 9\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 8 Professional\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 8 Home\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 7 Professional\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 7 Home\QCToolbar]
[<HKLM>\Software\Wow6432Node\FlashFXP\3]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 6 Professional\QCToolbar]
[<HKLM>\Software\Wow6432Node\Ghisler\Total Commander]
[<HKCU>\Software\Ghisler\Total Commander]
[<HKLM>\Software\Wow6432Node\Ghisler\Windows Commander]
[<HKCU>\Software\Ghisler\Windows Commander]
[<HKCU>\Software\Far Manager\SavedDialogHistory\FTPHost]
[<HKCU>\Software\Far2\SavedDialogHistory\FTPHost]
[<HKCU>\Software\Far\SavedDialogHistory\FTPHost]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 6 Home\QCToolbar]
[<HKLM>\Software\Wow6432Node\FlashFXP]
[<HKCU>\Software\FlashFXP]
[<HKCU>\Software\FileZilla]
[<HKCU>\Software\Cryer\WebSitePublisher]
[<HKLM>\Software\Wow6432Node\TurboFTP]
[<HKCU>\Software\VanDyke\SecureFX]
[<HKCU>\Software\FTP Explorer\Profiles]
[<HKCU>\Software\FTP Explorer\FTP Explorer\Workspace\MFCToolBar-224]
[<HKCU>\Software\FTPWare\COREFTP\Sites]
[<HKCU>\Software\CoffeeCup Software\Internet\Profiles]
[<HKCU>\Software\Sota\FFFTP\Options]
[<HKCU>\Software\Sota\FFFTP]
[<HKCU>\Software\TurboFTP]
[<HKCU>\Software\FileZilla Client]
[<HKCU>\Software\BPFTP]
[<HKCU>\Software\BulletProof Software\BulletProof FTP Client\Options]
[<HKCU>\Software\BPFTP\Bullet Proof FTP\Options]
[<HKCU>\Software\BulletProof Software\BulletProof FTP Client\Main]
[<HKCU>\Software\BPFTP\Bullet Proof FTP\Main]
[<HKLM>\Software\Wow6432Node\FileZilla Client]
[<HKLM>\Software\Wow6432Node\FileZilla]
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Microsoft Outlook Internet Settings]
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook]

Reads files which store third party applications passwords

%APPDATA%\opera software\opera stable\login data
%APPDATA%\mozilla\firefox\profiles.ini
<LS_APPDATA>\google\chrome\user data\default\web data
<LS_APPDATA>\google\chrome\user data\default\login data
%APPDATA%\thunderbird\profiles.ini

Brute-forces OS accounts.

Modifies file system

Creates the following files

%TEMP%\6a20.tmp
%TEMP%\6a31.tmp
%TEMP%\71d3.tmp.js
%TEMP%\455689940.0
%PROGRAMDATA%\10205cb3f4d3\13235fb0f7d0.dat

Deletes the following files

%TEMP%\71d3.tmp.js
%TEMP%\npekeagkkcdhacol

Moves the following files

from %TEMP%\455689940.0 to %TEMP%\npekeagkkcdhacol

Deletes itself.

Network activity

TCP

HTTP GET requests

http://18#.#77.59.149/index.php?id##########################################
http://18#.#77.59.149/index.php?id############################################

HTTP POST requests

http://94.##6.35.216/g_38472341.php
http://85.##7.171.238/index.php

UDP

DNS ASK bl###chain.info
DNS ASK ap#.##ockcypher.com

Miscellaneous

Searches for the following windows

ClassName: '3a0a7699def9' WindowName: '3d0d719ed9fe0'

Creates and executes the following

'<SYSTEM32>\wscript.exe' "%TEMP%\71D3.tmp.js" 1458545110
'<SYSTEM32>\rundll32.exe' "%TEMP%\455689940.0",DllGetClassObject dfsr 000000000000"' (with hidden window)
'<SYSTEM32>\cmd.exe' /c ping 127.0.0.1 & del /F /Q "<Full path to file>"' (with hidden window)
'<SYSTEM32>\rundll32.exe' "%PROGRAMDATA%\10205cb3f4d3\13235fb0f7d0.dat",DllGetClassObject dfsr 111111111111' (with hidden window)
'%WINDIR%\syswow64\rundll32.exe' "%PROGRAMDATA%\10205cb3f4d3\13235fb0f7d0.dat",DllGetClassObject dfsr' (with hidden window)

Executes the following

'<SYSTEM32>\rundll32.exe' "%TEMP%\455689940.0",DllGetClassObject dfsr 000000000000"
'<SYSTEM32>\cmd.exe' /c ping 127.0.0.1 & del /F /Q "<Full path to file>"
'<SYSTEM32>\taskeng.exe' {63C7CE4C-A272-43DE-8A27-91C3020FB28C} S-1-5-21-1960123792-2022915161-3775307078-1001:rlxzuqzvwcbs\user:Interactive:[1]
'<SYSTEM32>\ping.exe' 127.0.0.1
'<SYSTEM32>\rundll32.exe' "%PROGRAMDATA%\10205cb3f4d3\13235fb0f7d0.dat",DllGetClassObject dfsr 111111111111
'%WINDIR%\syswow64\rundll32.exe' "%PROGRAMDATA%\10205cb3f4d3\13235fb0f7d0.dat",DllGetClassObject dfsr

TECHNOLOGIES

TERMINOLOGIE

COURS ET EDU

MYTHES

Technical Information

Recommandations pour le traitement

Free trial