TrojanSpy.Win32.EMOTET.THIBCAI

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 connects to certain websites to send and receive information. 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 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}

Information Theft

This Trojan Spy gathers the following data:

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

Other Details

This Trojan Spy connects to the following website to send and receive information:

• • {BLOCKED}.{BLOCKED}.116.97:80/{string}
  • {BLOCKED}.{BLOCKED}.14.52:80/{string}
  • {BLOCKED}.{BLOCKED}.65.229:80/{string}
  • {BLOCKED}.{BLOCKED}.8.148:8080/{string}
  • {BLOCKED}.{BLOCKED}.150.240:7080/{string}
  • {BLOCKED}.{BLOCKED}.208.175:8080/{string}
  • {BLOCKED}.{BLOCKED}.60.230:7080/{string}
  • {BLOCKED}.{BLOCKED}.124.163:8080/{string}
  • {BLOCKED}.{BLOCKED}.144.228:80/{string}
  • {BLOCKED}.{BLOCKED}.183.211:8080/{string}
  • {BLOCKED}.{BLOCKED}.101.134:8080/{string}
  • {BLOCKED}.{BLOCKED}.60.129:80/{string}
  • {BLOCKED}.{BLOCKED}.79.48:8080/{string}
  • {BLOCKED}.{BLOCKED}.42.131:80/{string}
  • {BLOCKED}.{BLOCKED}.35.138:7080/{string}
  • {BLOCKED}.{BLOCKED}.166.192:80/{string}
  • {BLOCKED}.{BLOCKED}.133.253:8080/{string}
  • {BLOCKED}.{BLOCKED}.4.66:22/{string}
  • {BLOCKED}.{BLOCKED}.143.108:80/{string}
  • {BLOCKED}.{BLOCKED}.51.40:8080/{string}
  • {BLOCKED}.{BLOCKED}.253.234:990/{string}
  • {BLOCKED}.{BLOCKED}.68.89:443/{string}
  • {BLOCKED}.{BLOCKED}.60.129:80/{string}
  • {BLOCKED}.{BLOCKED}.233.46:443/{string}
  • {BLOCKED}.{BLOCKED}.93.124:7080/{string}
  • {BLOCKED}.{BLOCKED}.106.4:7080/{string}
  • {BLOCKED}.{BLOCKED}.8.192:8080/{string}
  • {BLOCKED}.{BLOCKED}.27.158:443/{string}
  • {BLOCKED}.{BLOCKED}.22.225:7080/{string}
  • {BLOCKED}.{BLOCKED}.50.210:8080/{string}
  • {BLOCKED}.{BLOCKED}.223.190:8080/{string}
  • {BLOCKED}.{BLOCKED}.182.254:8080/{string}
  • {BLOCKED}.{BLOCKED}.102.71:8443/{string}
  • {BLOCKED}.{BLOCKED}.160.178:8080/{string}
  • {BLOCKED}.{BLOCKED}.64.180:7080/{string}
  • {BLOCKED}.{BLOCKED}.18.56:443/{string}
  • {BLOCKED}.{BLOCKED}.87.122:8080/{string}
  • {BLOCKED}.{BLOCKED}.90.6:8080/{string}
  • {BLOCKED}.{BLOCKED}.143.100:7080/{string}
  • {BLOCKED}.{BLOCKED}.13.70:80/{string}
  • {BLOCKED}.{BLOCKED}.134.129:443/{string}
  • {BLOCKED}.{BLOCKED}.124.145:443/{string}
  • {BLOCKED}.{BLOCKED}.97.25:80/{string}
  • {BLOCKED}.{BLOCKED}.4.186:80/{string}
  • {BLOCKED}.{BLOCKED}.140.14:443/{string}
  • {BLOCKED}.{BLOCKED}.148.222:8080/{string}
  • {BLOCKED}.{BLOCKED}.173.247:8080/{string}
  • {BLOCKED}.{BLOCKED}.206.153:443/{string}
  • {BLOCKED}.{BLOCKED}.211.77:8080/{string}
  • {BLOCKED}.{BLOCKED}.111.142:7080/{string}
  • {BLOCKED}.{BLOCKED}.149.134:80/{string}
  • {BLOCKED}.{BLOCKED}.86.13:8080/{string}
  • {BLOCKED}.{BLOCKED}.163.131:8080/{string}
  • {BLOCKED}.{BLOCKED}.175.216:8080/{string}
  • {BLOCKED}.{BLOCKED}.171.51:80/{string}
  • {BLOCKED}.{BLOCKED}.142.33:80/{string}
  • {BLOCKED}.{BLOCKED}.77.40:7080/{string}
  • {BLOCKED}.{BLOCKED}.151.103:8080/{string}
  • {BLOCKED}.{BLOCKED}.141.15:50000/{string}
  • {BLOCKED}.{BLOCKED}.159.3:8080/{string}
  • {BLOCKED}.{BLOCKED}.166.147:80/{string}
  • {BLOCKED}.{BLOCKED}.87.73:80/{string}
  • {BLOCKED}.{BLOCKED}.105.59:8080/{string}
  • {BLOCKED}.{BLOCKED}.51.143:8080/{string}
  • {BLOCKED}.{BLOCKED}.42.205:443/{string}
  • {BLOCKED}.{BLOCKED}.37.125:443/{string}
  • {BLOCKED}.{BLOCKED}.57.42:80/{string}
  • {BLOCKED}.{BLOCKED}.84.80:8080/{string}
  • {BLOCKED}.{BLOCKED}.60.231:7080/{string}
  • {BLOCKED}.{BLOCKED}.204.126:8080/{string}
  • {BLOCKED}.{BLOCKED}.74.202:443/{string}
  • {BLOCKED}.{BLOCKED}.215.57:7080/{string}

It does the following:

• 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
• It creates a startup service if it has admin privileges, otherwise it only creates an autorun entry in the registry.

(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.