Lemodldr — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 3d5427a07cdecdce…

MALICIOUS

Office (OLE) / .DOCX

168.9 KB Created: 2020-07-31 20:21:00 Authoring application: Microsoft Office Word
MD5: 7b47c08a4c4f10203169c0c7ceab2170 SHA-1: b5b04a8ff3dcd39452cef492f13e86c510fa8131 SHA-256: 3d5427a07cdecdce3e2943473bf2a141a3eeff0e22919c7b1fe3378aed3d1590
300 Risk Score

Malware Insights

Lemodldr · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1140 Deobfuscate or Obfuscate

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject and a hidden UserForm property to execute commands. This is a common technique for downloading and executing second-stage payloads. ClamAV identifies this as Doc.Malware.Lemodldr-9238798-0, strongly suggesting the Lemodldr family. The embedded URL was confirmed benign, but the macro execution is the primary threat.

Heuristics 8

  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
  • ClamAV: Doc.Malware.Lemodldr-9238798-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Lemodldr-9238798-0
  • 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.
  • Suspicious extracted artifact high 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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 http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
791871d0af7a691daff6bf64706a93868d14caabf4ae021ac2dfaf9f2eed24e5
vba-macro oletools.olevba.extract_macros (decoded VBA source) 4964 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.