Win.Trojan.Xenixos-2 — Office (OLE) malware analysis

Static analysis result for SHA-256 80328ee11a959da0…

MALICIOUS

Office (OLE)

35.5 KB First seen: 2012-06-14
MD5: c9a15dbb35faf34baa5ecdb8e44a5f21 SHA-1: 480e1ade38f52f0f8f4cbffc5fe8fc037588f3aa SHA-256: 80328ee11a959da0ad4a8a6053b5bc74f5898753745d7b05d0f2a0867a149454
102 Risk Score

Malware Insights

Win.Trojan.Xenixos-2 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The sample exhibits legacy WordBasic macro virus markers, specifically 'RSN MACRO VIRUS', and is flagged by ClamAV as Win.Trojan.Xenixos-2. The document body contains numerous references to macro names like AutoExec and AutoOpen, indicating a macro-based execution mechanism. The presence of these markers strongly suggests the file is designed to execute malicious code upon opening.

Heuristics 3

  • ClamAV: Win.Trojan.Xenixos-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Xenixos-2
  • 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) 1582 bytes
SHA-256: 3c9dc82010f60bd7e859b5adad6b3ba06e43845820f04e4b555e56492a8eefae
Preview script
First 1,000 lines of the extracted script
+ @cmd0000 = 0 = @cmd006c , = = @cmd0005 , ,   -     3429 + +  
  25964    
  26465 =
=  
  25964  
30060 @cmd6e65 29804 ,   29686  
      25961 , 25961   25964    
    = = = =
MAIN
i = 1 5
@cmd01a5 = "<Ort>" , = 0 , = 0 ,
= 1 , = 0
@cmdc001 1
@cmdc001 6 , 1
@cmd01a6 = " " , = ";" , = 0 ,
= 0 , = 0 , = 1
i
,                         =
, ,         =
, ,         , ,     = 2816                   =
, ,         , ,         = 26465 =
=  
  25964  
30060 @cmd6e65 29804 ,   29686  
      25961 , 25961   25964    
    = = =       ,
= -
26465 25646 + = = = @cmd0005  
  25964    
  26465 =
=  
  25964  
30060 @cmd6e65 29804 ,   29686  
      25961 , 25961   25964    
    = = =      
, ,         , ,     = 2816 8704
= -
- - = = , = , = - = - = - = - - = = = = - - - - - - - = = = , = , , =
= -
26465 25646 + = = = @cmd0005  
  25964    
  =
MAIN
i = 1 50
@cmd01a5 = "<Titel>" , = 0 , = 0 ,
= 1 , = 0
@cmdc001 1
@cmdc007 2 , 1
@cmd01a6 = " " , = ";" , = 0 ,
= 0 , = 0 , = 1
i
MAIN
Dlg @cmd004e
Dlg
Fnam$ = Dlg @cmd6400 Dnam$ = Dlg
Kanal = @cmd805c "lnx" , "C:\temp\" = Fnam$
Kanal
Want$ = ".Object.Name"
FN$ = @cmd8061 Kanal , Want$
Want$ = FN$ = ".Object.Name"
RN$ = @cmd8061 Kanal , Want$
View = @cmd8073
View @cmd8075
@cmdc010
@cmd009b = 1 , = 0 , = 0 , = "1,25 cm" , = "1,25 cm"
@cmdc011 1
@cmd8081
@cmd0176 = 0
@cmd81db "LNX - Dokumentname: "
@cmd0176 = 1
@cmd81db RN$
@cmd0176 = 0
@cmdc00c
@cmdc00d 1
@cmd0176 = "Times New Roman" , = "7"
@cmd00f3
View @cmd8073
@cmd805d Kanal
MAIN
@cmd01a5 = "<Ort>" , = 0 , = 0 ,
= 1 , = 0
@cmdc001 1
@cmd01a6 = " " , = ";" , = 0 ,
= 0 , = 0 , = 0

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