Office (OLE) / .XLSX malware analysis — malicious · ce52063829815448

MALICIOUS

Office (OLE) / .XLSX

37.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: 3543caec69c9de0ef273bba9e6717d5a SHA-1: a9bc4b2dedbc636cbf3b67be24ba8c454b935cd8 SHA-256: ce5206382981544899e5fc7f5f2e07a0b1b2c7bebc88e29d11315189508bddf4

242 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a Workbook_Open VBA macro that utilizes CreateObject, indicating an attempt to execute code upon opening. The macro is heavily obfuscated, but the presence of a URL suggests it is intended to download and execute a second-stage payload. The ClamAV detection of 'Doc.Macro.Obfuscation-6336210-0' further supports this assessment. The extracted URL, while marked as confirmed_benign, is still included as a potential IOC given the overall malicious verdict.

Heuristics 7

ClamAV: Doc.Macro.Obfuscation-6336210-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Macro.Obfuscation-6336210-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_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 https://cdn.discordapp.com/attachments/901770008810618905/902547327489830932/FINALY_HD.jpg

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `d5fc4bf6c73a260ab4178c0fa727d3a4ea4fe8c3011d0e8de07e725e3a776820`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	9213 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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