Trojan.Win32.NEGASTEAL.J

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

Arrival Details

This Trojan 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 Trojan drops the following files:

• %User Temp%\{Random}.ps1
• %User Temp%\{Random}.psm1

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following processes:

• {Malware File Path}\{Malware File Name}.{Malware File Extension}
• "Powershell.exe" 東б屁एचтぎ儿ト丽-東б屁एचтぎ儿ト丽E東б屁एचтぎ儿ト丽x東б屁एचтぎ儿ト丽e東б屁एचтぎ儿ト丽c東б屁एचтぎ儿ト丽u東б屁एचтぎ儿ト丽t東б屁एचтぎ儿ト丽i東б屁एचтぎ儿ト丽o東б屁एचтぎ儿ト丽n東б屁एचтぎ儿ト丽P東б屁एचтぎ儿ト丽o東б屁एचтぎ儿ト丽l東б屁एचтぎ儿ト丽i東б屁एचтぎ儿ト丽c東б屁एचтぎ儿ト丽y東б屁एचтぎ儿ト丽 東б屁एचтぎ儿ト丽B東б屁एचтぎ儿ト丽y東б屁एचтぎ儿ト丽p東б屁एचтぎ儿ト丽a東б屁एचтぎ儿ト丽s東б屁एचтぎ儿ト丽s東б屁एचтぎ儿ト丽 東б屁एचтぎ儿ト丽-東б屁एचтぎ儿ト丽c東б屁एचтぎ儿ト丽o東б屁एचтぎ儿ト丽m東б屁एचтぎ儿ト丽m東б屁एचтぎ儿ト丽a東б屁एचтぎ儿ト丽n東б屁एचтぎ儿ト丽d 東б屁एचтぎ儿トC東б屁एचтぎ儿トo東б屁एचтぎ儿トp東б屁एचтぎ儿トy東б屁एचтぎ儿ト-東б屁एचтぎ儿トI東б屁एचтぎ儿トt東б屁एचтぎ儿トe東б屁एचтぎ儿トm '{Malware File Path}\{Malware File Name}.{Malware File Extension}' '%User Startup%\command-line.exe'
• %Windows%\Microsoft.NET\Framework\{.NET Framework Version}\RegAsm.exe

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows 2003(32-bit), XP and 2000(32-bit), or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit), 10(64-bit).. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://{BLOCKED}fy.org:443
• http://{BLOCKED}i.com/line/?fields=hosting
• http://{BLOCKED}indowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?{Random}
• http://www.{BLOCKED}ft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl
• http://{BLOCKED}rosoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl

It does the following:

• This is an ISO file containing a malicious executable upon extraction.