Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 710a31c4fd1eede0…

MALICIOUS

Office (OLE)

142.5 KB Created: 2020-10-15 06:34:00 Authoring application: Microsoft Office Word
MD5: 43f62f82e61a5300595a41d072cd645a SHA-1: a94d2d7154797c5daa9336228e871e548fe8553b SHA-256: 710a31c4fd1eede06ffa6bd4e734ae08c9d0f63f2cea755b904f311bedd8509d
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9778165-0, indicating a downloader variant of the Emotet family. The presence of a Document_Open VBA macro that utilizes CreateObject strongly suggests the execution of obfuscated code designed to download and run a secondary payload. The macro's obfuscation and use of CreateObject are characteristic of Emotet's initial infection stages.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778165-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778165-0
  • 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.
  • 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.

FilenameKindSourceSize
macros.bas
aa3822bbb419da819c0009ca2a50458591c2a917d376ecb16e3e87f227973bcb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10774 bytes

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