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TrojanSpy.Win32.EMOTET.TIABOFDB

December 06, 2019
 Modified by: Jemimah Mae Molina
 ALIASES:

Trojan:Win32/Emotet.BS!MTB (Microsoft); GenericR-QRI!37618A07FE6D (McAfee); Trojan-Banker.Win32.Emotet.dmtu (Kaspersky); Mal/Emotet-Q (Sophos)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


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 may be downloaded by other malware/grayware from remote sites.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

275,968 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

19 Sep 2019

Payload:

Connects to URLs/IPs, Steals information

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.

It may be downloaded by the following malware/grayware from remote sites:

Installation

This Trojan Spy adds the following folders:

  • %AppDataLocal%\{string1}{string2} → if run without admin privileges

(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).)

It drops the following copies of itself into the affected system:

  • %System%\{string1}{string2}.exe → if run with admin privileges
  • %AppDataLocal%\{string1}{string2}\{string1}{string2}.exe → if run without admin privileges
    where {string1} and {string2} can be any of the following strings:
    • chunk
    • counter
    • drawa
    • isve
    • two
    • next
    • mapi
    • rtapi
    • nlsdl
    • defs
    • tenant
    • rstrt
    • window
    • machine
    • mira
    • system
    • stream
    • cursor
    • structs
    • history
    • watched
    • hash
    • report
    • program
    • durable
    • offc
    • rsat
    • folders
    • shell
    • yellow
    • sounds
    • adjust
    • toner
    • tlb
    • sorted
    • loop
    • post
    • txt
    • icons
    • intel
    • inset
    • move
    • reports
    • trc
    • based
    • wim
    • lumber
    • violet
    • dom
    • easy
    • cvt
    • center
    • even
    • readand
    • xinput
    • mem
    • cues
    • layer
    • tools
    • wfd
    • running
    • mail
    • gesture
    • misc

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 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).)

It adds the following processes:

  • {Malware File Path}\{Malware File Name}.exe --{8 Random Characters}
  • %System%\{string1}{string2}.exe → if run with admin privileges
  • %System%\{string1}{string2}.exe --{8 Random Characters} → if run with admin privileges
  • %AppDataLocal%\{string1}{string2}\{string1}{string2}.exe → if run without admin privileges
  • %AppDataLocal%\{string1}{string2}\{string1}{string2}.exe --{8 Random Characters} → if run without admin privileges

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 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).)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

  • Global\I{Volume Serial Number}
  • Global\M{Volume Serial Number}

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\ControlSet001\
services\{string1}{string2}
ImagePath = %System%\{string1}{string2}.exe

It adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{string1}{string2} = %AppDataLocal%\{string1}{string2}\{string1]{string2}.exe

Other System Modifications

This Trojan Spy adds the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{string1}{string2}

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{string1}{string2}
Type = 16

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{string1}{string2}
Start = 2

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{string1}{string2}
ErrorControl = 0

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{string1}{string2}
DisplayName = {string1}{string2}

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\{string1}{string2}
ObjectName = {string1}{string2}

Backdoor Routine

This Trojan Spy connects to the following URL(s) to send and receive commands from a remote malicious user:

  • {BLOCKED}.{BLOCKED}.191.134:8080/{string}
  • {BLOCKED}.{BLOCKED}.93.46:443/{string}
  • {BLOCKED}.{BLOCKED}.92.210:7080/{string}
  • {BLOCKED}.{BLOCKED}.6.27:7080/{string}
  • {BLOCKED}.{BLOCKED}.88.162:8080/{string}
  • {BLOCKED}.{BLOCKED}.37.188:443/{string}
  • {BLOCKED}.{BLOCKED}.125.16:7080/{string}
  • {BLOCKED}.{BLOCKED}.162.209:8080/{string}
  • {BLOCKED}.{BLOCKED}.136.232:8080/{string}
  • {BLOCKED}.{BLOCKED}.172.5:443/{string}
  • {BLOCKED}.{BLOCKED}.253.46:8080/{string}
  • {BLOCKED}.{BLOCKED}.124.36:443/{string}
  • {BLOCKED}.{BLOCKED}.57.109:80/{string}
  • {BLOCKED}.{BLOCKED}.43.213:8080/{string}
  • {BLOCKED}.{BLOCKED}.139.101:8080/{string}
  • {BLOCKED}.{BLOCKED}.218.192:8080/{string}
  • {BLOCKED}.{BLOCKED}.25.128:8080/{string}
  • {BLOCKED}.{BLOCKED}.219.147:8080/{string}
  • {BLOCKED}.{BLOCKED}.49.124:443/{string}
  • {BLOCKED}.{BLOCKED}.177.26:8080/{string}
  • {BLOCKED}.{BLOCKED}.97.210:80/{string}
  • {BLOCKED}.{BLOCKED}.71.72:8080/{string}
  • {BLOCKED}.{BLOCKED}.182.217:8080/{string}
  • {BLOCKED}.{BLOCKED}.95.218:143/{string}
  • {BLOCKED}.{BLOCKED}.125.212:8080/{string}
  • {BLOCKED}.{BLOCKED}.203.55:80/{string}
  • {BLOCKED}.{BLOCKED}.194.134:443/{string}
  • {BLOCKED}.{BLOCKED}.67.62:7080/{string}
  • {BLOCKED}.{BLOCKED}.182.191:8080/{string}
  • {BLOCKED}.{BLOCKED}.6.2:8080/{string}
  • {BLOCKED}.{BLOCKED}.225.150:8080/{string}
  • {BLOCKED}.{BLOCKED}.119.246:80/{string}
  • {BLOCKED}.{BLOCKED}.14.170:8080/{string}
  • {BLOCKED}.{BLOCKED}.187.192:8080/{string}
  • {BLOCKED}.{BLOCKED}.59.244:20/{string}
  • {BLOCKED}.{BLOCKED}.3.54:443/{string}
  • {BLOCKED}.{BLOCKED}.172.5:8080/{string}
  • {BLOCKED}.{BLOCKED}.194.153:993/{string}
  • {BLOCKED}.{BLOCKED}.131.87:80/{string}
  • {BLOCKED}.{BLOCKED}.11.236:50000/{string}
  • {BLOCKED}.{BLOCKED}.105.159:21/{string}
  • {BLOCKED}.{BLOCKED}.19.21:8080/{string}
  • {BLOCKED}.{BLOCKED}.135.159:21/{string}
  • {BLOCKED}.{BLOCKED}.19.219:22/{string}
  • {BLOCKED}.{BLOCKED}.217.49:80/{string}
  • {BLOCKED}.{BLOCKED}.53.227:21/{string}
  • {BLOCKED}.{BLOCKED}.240.91:8080/{string}
  • {BLOCKED}.{BLOCKED}.67.134:8090/{string}
  • {BLOCKED}.{BLOCKED}.215.66:8080/{string}
  • {BLOCKED}.{BLOCKED}.39.59:7080/{string}
  • {BLOCKED}.{BLOCKED}.247.220:80/{string}
  • {BLOCKED}.{BLOCKED}.247.10:80/{string}
  • {BLOCKED}.{BLOCKED}.25.30:53/{string}
  • {BLOCKED}.{BLOCKED}.161.166:443/{string}
  • {BLOCKED}.{BLOCKED}.203.26:8080/{string}
  • {BLOCKED}.{BLOCKED}.153.252:8080/{string}
  • {BLOCKED}.{BLOCKED}.93.103:7080/{string}
  • {BLOCKED}.{BLOCKED}.193.139:20/{string}
  • {BLOCKED}.{BLOCKED}.132.213:8090/{string}
  • {BLOCKED}.{BLOCKED}.140.110:8080/{string}
  • {BLOCKED}.{BLOCKED}.216.44:8080/{string}
  • {BLOCKED}.{BLOCKED}.138.82:22/{string}
  • {BLOCKED}.{BLOCKED}.246.93:8080/{string}
  • {BLOCKED}.{BLOCKED}.44.20:21/{string}
  • {BLOCKED}.{BLOCKED}.11.150:8080/{string}
  • {BLOCKED}.{BLOCKED}.234.16:8080/{string}
  • {BLOCKED}.{BLOCKED}.252.13:443/{string}
  • {BLOCKED}.{BLOCKED}.106.43:995/{string}
  • {BLOCKED}.{BLOCKED}.98.125:8080/{string}
    where {string} can be one or a combination of any of the following strings, separated by "/":
    • teapot
    • pnp
    • tpt
    • splash
    • site
    • codec
    • health
    • balloon
    • cab
    • odbc
    • badge
    • dma
    • psec
    • cookies
    • iplk
    • devices
    • enable
    • mult
    • prov
    • vermont
    • attrib
    • schema
    • iab
    • chunk
    • publish
    • prep
    • srvc
    • sess
    • ringin
    • nsip
    • stubs
    • img
    • add
    • xian
    • jit
    • free
    • pdf
    • loadan
    • arizona
    • tlb
    • forced
    • results
    • symbols
    • report
    • guids
    • taskbar
    • child
    • cone
    • glitch
    • entries
    • between
    • bml
    • usbccid
    • sym
    • enabled
    • merge
    • window
    • scripts
    • raster
    • acquire
    • json
    • rtm
    • walk
    • ban

Information Theft

This Trojan Spy gathers the following data:

  • Computer Name
  • System Locale
  • OS Version
  • Running Processes

Other Details

This Trojan Spy does the following:

  • It creates a startup service if it has admin privileges, otherwise it only creates an autorun entry in the registry.
  • It deletes the outdated copy of itself:
    • %System%\{string1}{string2}.exe
    • %AppDataLocal%\{string1}{string2}\{string1}{string2}.exe
      where {string1} and {string2} can be any of the following strings:
      • bml
      • vault
      • apo
      • ttls
      • winsat
      • cim
      • types
      • depth
      • idaho
      • example
      • photos
      • gateway
      • themes
      • khmer
      • lite
      • rpl
      • media
      • tran
      • mondeu
      • plan
      • power
      • sans
      • subs
      • namesof
      • sine
      • events
      • enums
      • tier
      • icon
      • nirmala
      • cred
      • was
      • ipsm
      • sms
      • flows
      • code
      • sound
      • dlls
      • click
      • lanes
      • vmbus
      • blb
      • setthe
      • tasks
      • item
      • als
      • cluster
      • prof
      • psec
      • cofire
      • ram
      • phong
      • vector
      • notices
      • cull
      • netsh
      • wan
      • cpl
      • shims
      • convert
      • chx
      • sens
      • ihun
      • priv

(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).)

It deletes itself after execution.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.376.03

FIRST VSAPI PATTERN DATE:

19 Sep 2019

VSAPI OPR PATTERN File:

15.377.00

VSAPI OPR PATTERN Date:

20 Sep 2019

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Identify and terminate files detected as TrojanSpy.Win32.EMOTET.TIABOFDB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

RESTORE
  • Close Registry Editor.

    • Step 5

    Delete this registry value

    [ Learn More ]

    Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

    • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\{string1}{string2}
      • Type = 16
    • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\{string1}{string2}
      • Start = 2
    • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\{string1}{string2}
      • ErrorControl = 0
    • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\{string1}{string2}
      • DisplayName = {string1}{string2}
    • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\{string1}{string2}
      • ObjectName = {string1}{string2}
    • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
      • {string1}{string2} = %AppDataLocal%\{string1}{string2}\{string1]{string2}.exe

    Step 6

    Search and delete this folder

    [ Learn More ]
    Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
    • %AppDataLocal%\{string1}{string2}

    Step 7

    Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.EMOTET.TIABOFDB. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:

    Step 8

    Delete this registry value

    [ Learn More ]

    Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

    RESTORE
  • Close Registry Editor.


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