Office (OLE) malware analysis — malicious · ad8321d8f63a374b

MALICIOUS

Office (OLE)

88.0 KB Created: 2010-07-06 03:26:00 Authoring application: Microsoft Word 9.0

MD5: 194824c72d2b35da812dc7b64265b652 SHA-1: c14059dcfbb27e99e88267121415bd240d01cc64 SHA-256: ad8321d8f63a374b494eed4111a56760a8f6e0ea52c7881ea663d7e5e9d02e30

360 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1059.001 PowerShell

The sample contains a VBA macro that executes the URLDownloadToFile API, indicating an attempt to download a second-stage payload. The macro is configured to auto-execute via the Document_Open event. The extracted URL http://74.41.9.165/Gupdate.exe is likely the location of the payload. The document body content is unrelated to the malicious functionality.

Heuristics 9

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD

URLDownloadToFile in VBA
ClamAV: Doc.Downloader.Sload-6961205-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Sload-6961205-0
Reference to CreateProcess API high SC_STR_CREATEPROCESS

Reference to CreateProcess API
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
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://74.41.9.165/Gupdate.exe
- http://microsoft_office_IDCheckTW.BestDeals.At/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `b6871183b3f86251572193cd449e017a273f437dc5e4f09209bbe083004f8255`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8299 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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