Lemodldr Office (OLE) / .DOCX malware analysis — malicious · 43b649f8d39c8356

MALICIOUS

Office (OLE) / .DOCX

176.9 KB Created: 2020-07-30 21:25:00 Authoring application: Microsoft Office Word

MD5: 36fea8be4bf559852cc841616ff794d8 SHA-1: 8aad9e4cb79ba290cae31a510e3b744367f5326d SHA-256: 43b649f8d39c8356d4c4920c61581ed58f90e56954ed5f90481f3b09cd059be0

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 file is identified as malicious by ClamAV with the signature Doc.Malware.Lemodldr-9206390-0. Static analysis revealed critical heuristics indicating a VBA UserForm hidden-property command stager, which is auto-executing and uses CreateObject. This suggests the macro is designed to download and execute a second-stage payload. The presence of VBA macros and the specific ClamAV signature strongly point to the Lemodldr family.

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-9206390-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Lemodldr-9206390-0
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` `21d398aa8146cf51334c4856f24496523f93cc34315ab928e34487f0e697e02a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5256 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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