Office (OLE) / .DOC malware analysis — malicious · 49a89b01989834ff

MALICIOUS

Office (OLE) / .DOC

45.0 KB Created: 2022-04-20 02:10:00 Authoring application: Microsoft Office Word First seen: 2022-04-20

MD5: ba29cf9b38ef7fe4ee1d126a8d6a20db SHA-1: 8f3f1c4bd37cb01b78c6a2afb83f1934222765dd SHA-256: 49a89b01989834ff1126f061cb875ee52f837f6cd27872a3f269dbaf17e97b2b

182 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The sample is a malicious Word document containing a VBA macro that executes automatically upon opening (AutoOpen). This macro uses CreateObject to instantiate the Windows Installer service and then calls InstallProduct to download and execute a Windows Installer package from the URL https://filebin.net/rf43v6qzghbj7h7b/TRY.msi. This indicates a downloader or dropper attack pattern.

Heuristics 6

AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen 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 https://filebin.net/rf43v6qzghbj7h7b/TRY.msi�
- https://filebin.net/rf43v6qzghbj7h7b/TRY.msi
- http://schemas.openxmlformats.org/drawingml/2006/main
- https://docs.microsoft.com/en-us/windows/win32/msi/action

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `5ca21e16d63b78895f5db30799c7efb7b845bccb795d84936794669df04e7f82`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	626 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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