Malicious Office (OOXML) / .DOC — malware analysis report

Static analysis result for SHA-256 ee226dd5f874e836…

MALICIOUS

Office (OOXML) / .DOC

6.60 MB Created: 2025-01-17 18:12:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2025-05-02
MD5: df9fe188e970721e6087178985410470 SHA-1: ba07c4ebf64cc5f4c39c0b323f328e041b3a20b0 SHA-256: ee226dd5f874e8364bec3ba8161491fef62782fac2116fc7619d59abf2c995c8
210 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains a VBA macro with a Document_Open auto-execution subroutine. This macro attempts to create and load a DLL named 'doomgeneric_docm.dll' from the temporary directory, which is likely a second-stage payload. The macro also references creating 'frame.bmp' and 'frame_word.bmp' files in the temporary directory, suggesting a staged execution process. ClamAV detection as 'Doc.Dropper.EmbeddedBase64Exe' further supports this dropper functionality.

Heuristics 7

  • ClamAV: Doc.Dropper.EmbeddedBase64Exe-9865902-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmbeddedBase64Exe-9865902-1
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
b8f26698fa77c342d2fe385192b2b507a8f5ca1a8db0918d774ebce1af4c0db8		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 2409 bytes
vbaProject_00.bin
fee771007cdb888bae2bd4510f390fc5ef73003a418ec5135fceeac07c7b0206		 vba-project OOXML VBA project: word/vbaProject.bin 8388608 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 716 long base64-like blob(s).

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