TrojanSpy.Win32.TRICKBOT.TIGOCDU

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 drops the following copies of itself into the affected system:

• %Application Data%\CloudApp\8292ce87b9a1282f8c9ec3ddfef4aa9c9cfa991d.exe

(Note: %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).)

It adds the following processes:

• %Application Data%\CloudApp\8292ce87b9a1282f8c9ec3ddfef4aa9c9cfa991d.exe
• %System%\svchost.exe
• taskeng.exe {A2A3AB46-7759-4DE8-998F-2018CF4C831B} S-1-5-18:NT AUTHORITY\System:Service:
• %Application Data%\CloudApp\8292ce87b9a1282f8c9ec3ddfef4aa9c9cfa991d.exe %Application Data%\CloudApp\8292ce87b9a1282f8c9ec3ddfef4aa9c9cfa991d.exe
• %System%\lsass.exe
• %Windows%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
• %Windows%\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
• %System%\sppsvc.exe
• "%System Root%\Program Files\Windows Media Player\wmpnetwk.exe"
• %System%\svchost.exe -k LocalServiceAndNoImpersonation

(Note: %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).. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

It creates the following folders:

• %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft
• %Application Data%\CloudApp
• %Application Data%\CloudApp\data

(Note: %Windows% is the Windows folder, where it usually is C:\Windows 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).)

Other System Modifications

This Trojan Spy deletes the following files:

• %Windows%\Tasks\Ms Cloud Disk.job
• %Windows%\LastGood.Tmp

(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\SSDPSRV
Type = "16"

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

Dropping Routine

This Trojan Spy drops the following files:

• %All Users Profile%\Microsoft\Windows\DRM\v3ks.sec
• %All Users Profile%\Microsoft\Network\Downloader\qmgr1.dat
• %All Users Profile%\Microsoft\Network\Downloader\qmgr0.dat
• %All Users Profile%\Microsoft\Windows\DRM\drmstore.hds

(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). )

This report is generated via an automated analysis system.