Office (OLE) / .DOC malware analysis — malicious · 34d59c8b0e405d04

MALICIOUS

Office (OLE) / .DOC

133.0 KB Created: 2020-04-18 21:19:00 Authoring application: Microsoft Office Word First seen: 2022-05-16

MD5: c996546c098053627f51a24cc39e513f SHA-1: 07c68f3621ad4ab2de6856ba06437714afffe665 SHA-256: 34d59c8b0e405d04c0b007680cc8ccd7cdb48594ebbccdd7c6fb037f14060ace

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1105 Ingress Tool Transfer T1059.001 PowerShell

The sample contains a VBA macro that executes upon opening the document. This macro utilizes CreateObject to instantiate a FileSystemObject and an ADODB.Stream object. It then downloads a file from 'https://www.upload.ee/download/14145057/abe6f9ebf2571b089003/Invoice_IVN_734345204.exe' and saves it as 'C:\Users\Public\MRLVQMSXP.exe'. This indicates a downloader pattern aiming to fetch and execute a secondary payload.

Heuristics 7

ClamAV: Doc.Dropper.Agent-6412232-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Agent-6412232-1
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.
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
- https://www.upload.ee/download/14145057/abe6f9ebf2571b089003/Invoice_IVN_734345204.exe�
- https://www.upload.ee/download/14145057/abe6f9ebf2571b089003/Invoice_IVN_734345204.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `a7b6b68cba9f2a7d175e9a3ac4a48dbc41dbc26c16e8de92f73070892d2dec0c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1987 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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