Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 aa7280fb05501f75…

MALICIOUS

Office (OLE)

142.9 KB Created: 2020-10-15 06:34:00 Authoring application: Microsoft Office Word
MD5: 0b5d5c4468a31e83e1ec8a0d8b120496 SHA-1: 68ac3e73c7bb88172984109977a8dc0f2c095522 SHA-256: aa7280fb05501f752d412d103bd48c86094cc49ea8f3d9f6b3ab458a64997f63
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical ClamAV detection explicitly identifies this file as 'Doc.Downloader.Emotet-9778165-0'. Heuristics confirm the presence of VBA macros, specifically a Document_Open auto-exec macro that utilizes CreateObject, indicating it's designed to run malicious code upon opening. This macro likely downloads and executes a second-stage payload, a common characteristic of Emotet. The document body content is obfuscated and unreadable.

Heuristics 7

  • 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.
  • 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.

FilenameKindSourceSize
macros.bas
aa3822bbb419da819c0009ca2a50458591c2a917d376ecb16e3e87f227973bcb
vba-macro oletools.olevba.extract_macros (decoded VBA source) 10774 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.