Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 24f9d558699f89b0…

MALICIOUS

Office (OOXML)

9.1 KB
MD5: 84d73159bf14d432af53583f58386764 SHA-1: fb5f57a727bbd5fd308c4ee7a036dd217357e109 SHA-256: 24f9d558699f89b0deb7a85778e74f828e7632116415cb37f28970015ba92497
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The OOXML document contains a VBA macro that is automatically executed upon opening. This macro constructs a command to download a payload from the URL "https://www.bitly.com/asdodoasdoaasdk" using the command-line utility "cmd". The macro uses ShellExecute to launch this command, indicating a downloader or droppper functionality.

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/M.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
0f6bbc929c471824f5674cf7302e1e35f4017cb4899781c13f50bf09826ffa4a		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 723 bytes
vbaProject_00.bin
6f90f234fa84c9469c15ba8d9eb562f1efc112269f18196627e4c0d61e091ebb		 vba-project OOXML VBA project: ppt/M.b 19456 bytes

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