Lemodldr Office (OLE) / .DOCX malware analysis — malicious · f7b95f13831f1c05

MALICIOUS

Office (OLE) / .DOCX

175.5 KB Created: 2020-07-31 16:45:00 Authoring application: Microsoft Office Word

MD5: caf21362d9227ac58c368f0db495a562 SHA-1: b15449eac71ee609b781f595cf2140a35583192d SHA-256: f7b95f13831f1c051ec6f8f9759ac2973f3648654d5169d960c86ea15def3497

300 Risk Score

Malware Insights

Lemodldr · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The critical heuristic 'OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER' indicates the presence of a hidden UserForm designed to execute commands. This is further supported by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic, which points to an auto-executing macro. The ClamAV detection 'Doc.Malware.Lemodldr-9238796-0' strongly suggests the Lemodldr family. The primary attack pattern involves leveraging VBA macros to initiate a command stager, likely for downloading and executing additional malicious content.

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-9238796-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Lemodldr-9238796-0
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.

Filename	Kind	Source	Size
`macros.bas` `3c6660df1d9ea08567ae90e8a26062b6ba20117ab87a4249e495b6dede163c9f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5017 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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