TR/Drop.Bomka.G.2 - Trojan

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Descriere completa

Statistici

Nume:	TR/Drop.Bomka.G.2
Descoperit pe data de:	09/02/2006
Tip:	Troian
Subtip:	Dropper
ITW:	Nu
Numar infectii raportate:	Scazut
Potential de raspandire:	Scazut
Potential de distrugere:	Scazut spre mediu
Fisier static:	Da
Marime:	185.953 Bytes
MD5:	141dd10Ecaaffae90828993c1f2aab70
Versiune VDF:	6.33.00.212

General Metoda de raspandire:
   • Nu are rutina proprie de raspandire

Alias:
   • Mcafee: AdClicker-DW
   • TrendMicro: TROJ_BOMKA.G
   • Sophos: Troj/Bombka-F
   • Panda: Trj/Dropper.QN
   • Bitdefender: Trojan.Downloader.Bomka.G

Sistem de operare:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP

Efecte secundare:
   • Creeaza fisiere
   • Creeaza un fisier malware
   • Modificari in registri
   • Sustrage informatii

Fisiere Sunt create fisierele:

– Un fisier temporar care poate fi sters dupa aceea:
• %TEMPDIR%\ns%combinatie de caractere aleatoare%.tmp

– %SYSDIR%\kaboom.dll Analiza ulterioara a relevat ca si acest fisier este malware. Detectat ca: TR/Dldr.Bomka.G

– %TEMPDIR%\game1.exe Fisierul este executat dupa ce a fost creat.

Registrii sistemului Inregistreaza un browser helper object (BHO) prin adaugarea urmatoarelor chei in registri:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
   Browser Helper Objects\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}]
– [HKCR\Horde.Labspak]
   • @="Labspak"

– [HKCR\Horde.Labspak\CLSID]
   • @="{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}"

– [HKCR\Horde.Labspak\CurVer]
   • @="Horde.Labspak.1"

– [HKCR\Horde.Labspak.1]
   • @="Labspak"

– [HKCR\Horde.Labspak.1\CLSID]
   • @="{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}"

– [HKCR\CLSID\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}]
   • @="Labspak"

– [HKCR\CLSID\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}\InprocServer32]
   • @="%SYSDIR%\kaboom.dll"
   • "ThreadingModel"="Apartment"

– [HKCR\CLSID\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}\ProgID]
   • @="Horde.Labspak.1"

– [HKCR\CLSID\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}\Programmable]
– [HKCR\CLSID\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}\TypeLib]
   • @="{90EC7761-4998-4536-B4D7-9EB72ADB3042}"

– [HKCR\CLSID\{FAFC3FDD-D9E8-4770-843D-F105F0D7E409}\
   VersionIndependentProgID]
   • @="Horde.Labspak"

– [HKCR\TypeLib\{90EC7761-4998-4536-B4D7-9EB72ADB3042}\3.0]
   • @="KABOOMLib"

– [HKCR\TypeLib\{90EC7761-4998-4536-B4D7-9EB72ADB3042}\3.0\0\win32]
   • @="%SYSDIR%\kaboom.dll"

– [HKCR\TypeLib\{90EC7761-4998-4536-B4D7-9EB72ADB3042}\3.0\FLAGS]
   • @="0"

– [HKCR\TypeLib\{90EC7761-4998-4536-B4D7-9EB72ADB3042}\3.0\HELPDIR]
   • @="%SYSDIR%\"

Urmatoarele chei sunt adaugate in registrii sistemului:

– [HKLM\SOFTWARE\Microsoft\Zeal]
   • "campaign_id"="18"
   • "is_dialup"=dword:%numar hexazecimal%
   • "user_id"="%sir de 6 caractere aleatoare%"
   • "sleep_delay"=dword:%numar hexazecimal%
   • "install_delay"=dword:%numar hexazecimal%
   • "main_delay"=dword:%numar hexazecimal%
   • "stage"=dword:%numar hexazecimal%
   • "timeout"=dword:%numar hexazecimal%

– [HKCR\Interface\{9F111438-8C25-4BEB-A9F6-841FD4728B22}]
   • @="ILabspak"

– [HKCR\Interface\{9F111438-8C25-4BEB-A9F6-841FD4728B22}\
   ProxyStubClsid]
   • @="{00020424-0000-0000-C000-000000000046}"

– [HKCR\Interface\{9F111438-8C25-4BEB-A9F6-841FD4728B22}\
   ProxyStubClsid32]
   • @="{00020424-0000-0000-C000-000000000046}"

– [HKCR\Interface\{9F111438-8C25-4BEB-A9F6-841FD4728B22}\TypeLib]
   • @="{90EC7761-4998-4536-B4D7-9EB72ADB3042}"
   • "Version"="3.0"

Backdoor Servere contactate:
Unul dintre:
   • joywebserfer.com/counter11/**********
   • cleverhead.info/counter11/**********
   • wannabcool.info/counter11/**********
   • somethngcool.info/counter11/**********
   • sortbycool.info/counter11/**********
   • mucho-cool.com/counter11/**********
   • epromosystems.com/counter11/**********

Urmatorul:
   • mucho-cool.com/counter11/**********

Astfel se pot transmite informatii si se poate obtine control la distanta. Aceasta se face printr-o interogare HTTP GET intr-un script PHP.
Raspunsul serverului este scris in fisierul: %TEMPDIR%\s32o.%random number%

Trimte informatii despre:
    • Numele sistemului
    • Utilizatorul curent
    • Tipul conexiunii la Internet
    • ID-ul platformei

Posibilitati de control la distanta:
    • Vizitarea unui website

Injectarea codului malware in alte procese – Injecteaza fisierul urmator intr-un proces: kaboom.dll

Numele procesului:
• iexplore.exe

Detaliile fisierului Limbaj de programare:
Limbaj de programare folosit: C (compilat cu Microsoft Visual C++).

Compresia fisierului:
Pentru a ingreuna detectia si a reduce marimea fisierului, este folosit urmatorul program de arhivare:
• UPX

Pentru o descriere scurta click aici.

Descriere introdusa de Daniel Constantin la Tue, 14 Feb 2006 09:21 (GMT+1)
Descriere actualizata de Daniel Constantin la Tue, 14 Feb 2006 09:37 (GMT+1)

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