Sagent Office (OLE) / .DOC malware analysis — malicious · ecb259f81ab087c7

MALICIOUS

Office (OLE) / .DOC

183.5 KB Created: 2019-12-13 20:15:00 Authoring application: Microsoft Office Word

MD5: 0ffbac9555044f96ad315099fa9cce41 SHA-1: 8f3e785112cbad198debb5ed47c222b61cf755c1 SHA-256: ecb259f81ab087c7a6fb78428345916c63df029599610a0019294f6a909af3e7

300 Risk Score

Malware Insights

Sagent · confidence 95%

MITRE ATT&CK

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

The file is a malicious OLE document containing VBA macros. The 'Document_Open' macro is configured to execute automatically, utilizing a hidden UserForm property to stage and execute a command. This mechanism is indicative of a downloader, designed to fetch and run a secondary payload. ClamAV identifies the sample as 'Doc.Downloader.Sagent-7454029-0', supporting the downloader classification.

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.Downloader.Sagent-7454029-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Sagent-7454029-0
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` `8b140e455a34f8aa92109811060058b938672f863f8a9ca7d458fa6e659b1eb2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10966 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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