TrojanSpy.Win32.LOKI.TIOIBYSM

This Trojan Spy 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 Spy 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 Spy adds the following processes:

• "%User Temp%\sv.dll" -s -pghergbdgsrfhjrtdtggsdg
• "%User Temp%\sise.dll" -s -pfsdgsdfvsdzcxfsDC
• "%Application Data%\curll.exe" -k https://{BLOCKED}o.co/1nFz77
• %User Temp%\svchost.exe
• %User Temp%\sise.exe
• %System%\sc.exe start w32time task_started
• %System%\sdclt.exe /CONFIGNOTIFICATION
• taskhost.exe SYSTEM
• %System%\svchost.exe -k LocalService
• %System%\wsqmcons.exe
• %System%\svchost.exe -k WerSvcGroup
• %System%\schtasks.exe /delete /f /TN "Microsoft\Windows\Customer Experience Improvement Program\Uploader"

It creates the following folders:

• %All Users Profile%\Microsoft\Windows\Sqm\Upload
• %System Root%\Users
• %Application Data%\a9nJpRc0Q
• %All Users Profile%\Microsoft\Windows\Sqm\Manifest
• %User Profile%\AppData
• %All Users Profile%\Microsoft\Windows\Sqm\Sessions

(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Trojan Spy deletes the following files:

• %Windows%\Tasks\wvrtcv.job
• %Windows%\Tasks\EqNwGfdrBW4eE2.job

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\W32Time
Type = "16"

(Note: The default value data of the said registry entry is 20.)

Dropping Routine

This Trojan Spy drops the following files:

• %User Temp%\sise.dll
• %Application Data%\curl.exe
• %User Temp%\sv.dll
• %Application Data%\a9nJpRc0Q
• %User Temp%\sise.exe
• %Application Data%\curll.exe
• %User Temp%\svchost.exe

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

Other Details

This Trojan Spy connects to the following possibly malicious URL:

• http://{BLOCKED}e-public-dns-b.{BLOCKED}e.com
• http://{BLOCKED}o.co

This report is generated via an automated analysis system.