Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ebf06befe740609e…

MALICIOUS

Office (OLE)

6.5 KB First seen: 2012-06-14
MD5: 9b2465aafd61a2ea99671f19902c97a4 SHA-1: 35fcd31e3654dd5d7532eb6ae99b97bd641d03d6 SHA-256: ebf06befe740609ebd6d6e51bc24b1ed067e1c71084e43f6ae3f867dd1d1b8cc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits legacy macro virus markers ('RSN MACRO VIRUS') and references VBA functions like AutoOpen and FileSaveAs, indicative of a macro-based attack. ClamAV detection as 'Win.Trojan.Doggie-4' further supports its malicious nature. The document body contains embedded strings and paths that are likely artifacts of the macro's functionality.

Heuristics 3

  • ClamAV: Win.Trojan.Doggie-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Doggie-4
  • 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) 502 bytes
SHA-256: 6a0fcd8d9c97ccf253fe50f2dc57de31ffb8db3df1822ac91f89d978542661e9
Preview script
First 1,000 lines of the extracted script
21349          
        357
MAIN
dlg @cmd0054
dlg
dlg = 0
dlg = 1
Name$ = @cmd8025
@cmd80c2 "Global:FileSaveAs" , @cmd8025 = ":FileSaveAs"
@cmd80c2 "Global:AutoOpen" , @cmd8025 = ":AutoOpen"
@cmd0054 dlg
@cmd80c2 @cmd8025 = ":AutoOpen" , "Global:AutoOpen"
@cmd80c2 @cmd8025 = ":filesaveas" , "Global:FileSaveAs"
MAIN
, - * exit
dlg @cmd0054
dlg
dlg
dlg = 0 dlg = 1
Name$ = @cmd8025
@cmd80c2 "Global:FileSaveAs" , @cmd8025 = ":FileSaveAs"
@cmd80c2 "Global:AutoOpen" , @cmd8025 = ":AutoOpen"
@cmd0054 dlg

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