TrojanSpy.Win32.EMOTET.THJAOAI

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.

It deletes itself after execution.

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%\8ad9da561a897dbe4f351860404005e26d856032.exe --2d394bd4
• "%Windows%\SysWOW64\footpublish.exe"
• %Windows%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
• %System%\svchost.exe -k LocalServiceAndNoImpersonation
• %Windows%\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
• %System%\sppsvc.exe
• "%System Root%\Program Files\Windows Media Player\wmpnetwk.exe"
• %Windows%\SysWOW64\footpublish.exe --12829537
• %Windows%\SysWOW64\o66wjncrvpqr3f.exe --e7cb06db
• fsquirt.exe -Register
• "%Windows%\SysWOW64\footpublish.exe" /scomma "%Windows%\TEMP\18EC.tmp"
• "%Windows%\SysWOW64\footpublish.exe" "%Windows%\TEMP\18FD.tmp"
• "%Windows%\SysWOW64\footpublish.exe" "%Windows%\TEMP\1AC3.tmp"
• "%Windows%\SysWOW64\footpublish.exe" /scomma "%Windows%\TEMP\1AC2.tmp"
• "%Windows%\SysWOW64\footpublishb.exe" "%Windows%\TEMP\1AC3.tmp"
• "%Windows%\SysWOW64\footpublisha.exe" "%Windows%\TEMP\18FD.tmp"

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

• %AppDataLocal%\Microsoft\Windows\Burn\Burn
• %User Temp%\WPDNSE
• %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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).. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Autostart Technique

This Trojan Spy registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\footpublish
ImagePath = "%Windows%\SysWOW64\footpublish.exe"

Other System Modifications

This Trojan Spy deletes the following files:

• %Windows%\SysWOW64\nextbased.exe
• %Windows%\Temp\18EC.tmp
• %Windows%\SysWOW64\footpublish.exe:Zone.Identifier
• %Windows%\Temp\18FD.tmp
• %Windows%\Temp\1AC2.tmp
• %Windows%\Temp\1AC3.tmp

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

It adds the following registry keys:

HKEY_USERS\.DEFAULT\SOFTWARE\
Local AppWizard-Generated Applications

HKEY_USERS\.DEFAULT\SOFTWARE\
Local AppWizard-Generated Applications\MFCBind

HKEY_USERS\.DEFAULT\SOFTWARE\
Local AppWizard-Generated Applications\MFCBind\Recent File List

HKEY_USERS\.DEFAULT\SOFTWARE\
Local AppWizard-Generated Applications\MFCBind\Settings

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\Drives\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}\
Current Media

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\HomeGroup\
UIStatusCache

It adds the following registry entries:

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\Drives\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}
Drive Type = "16"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\Drives\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}
IsImapiDataBurnSupported = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\StagingInfo\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}
DriveNumber = "3"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\StagingInfo\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}
StagingPath = "%AppDataLocal%\Microsoft\Windows\Burn\Burn"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\StagingInfo\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}
Active = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\HomeGroup\
UIStatusCache
UIStatus = "560"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\HomeGroup\
UIStatusCache
OnlyMember = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\footpublish
DisplayName = "footpublish"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\footpublish
Start = "SERVICE_AUTO_START"

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.)

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\StagingInfo\Volume{6fc5adc8-b8bb-11e6-a55b-806e6f6e6963}\
DriveNumber

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
CD Burning\CD Recorder Drive

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\NlaSvc\Parameters\
Internet\ManualProxies\(Default)

Dropping Routine

This Trojan Spy drops the following files:

• %All Users Profile%\Microsoft\Network\Downloader\qmgr1.dat
• %Windows%\SysWOW64\o66WJNCrvPqR3f.exe
• %All Users Profile%\Microsoft\Windows\DRM\v3ks.sec
• %Windows%\SysWOW64\footpublishb.exe
• %Windows%\SysWOW64\footpublish.exe
• %All Users Profile%\Microsoft\Windows\DRM\drmstore.hds
• %All Users Profile%\xec\x8a\xa4\xec\x84\x9c\xec\x8a\xb5\xea\xb7\xb8\xea\xb8\xb8\xeb\x85\x80\xec\x9a\xb0\xeb\xa6\xac\xea\xb0\x80\xec\xa6\x90.exe
• %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb
• %Windows%\SysWOW64\footpublisha.exe
• %All Users Profile%\AdHM4orGeXDz249sD.exe
• %All Users Profile%\Microsoft\Network\Downloader\qmgr0.dat

(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). . %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local 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}23.144:443/dma
• http://{BLOCKED}23.144:443/vermont/raster/json
• http://{BLOCKED}4.105.242:443/usbccid/pnp
• http://{BLOCKED}195.162:7080/balloon/prep/acquire/merge
• http://{BLOCKED}195.162:7080/whoami.php
• http://{BLOCKED}195.162:7080/odbc/enable
• http://{BLOCKED}.207.142:8080/news.php
• http://{BLOCKED}195.162:7080/mult/cone/json
• http://{BLOCKED}.207.142:8080/chunk/cone/json/merge
• {BLOCKED}.116.137

It deletes itself after execution.

This report is generated via an automated analysis system.