IcedID — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 e7bf9d98a194ec70…

MALICIOUS

Office (OOXML) / .DOC

33.3 KB Created: 2021-12-03 12:30:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 556fbe2a46472f9634523110b98f18ff SHA-1: ee4965f1ac7492236ea90bf6d36a3e21d4fbf17e SHA-256: e7bf9d98a194ec7067365153b6ce9129746c42b9472d676e8ff142a36dee7f6e
202 Risk Score

Malware Insights

IcedID · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is identified as IcedID by ClamAV. It contains VBA macros, including an AutoOpen function, which is a common delivery mechanism for this family. The AutoOpen macro uses CreateObject to execute a command, specifically 'c:\windows\explorer ', which is likely intended to download and execute a second-stage payload. The document body appears to be obfuscated or malformed, but the presence of VBA macros and the ClamAV detection strongly indicate malicious intent.

Heuristics 6

  • ClamAV: Doc.Downloader.IcedID-8ff0f02ff0876072-9950256-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.IcedID-8ff0f02ff0876072-9950256-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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 project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2012/wordml
    • http://schemas.microsoft.com/office/word/2015/wordml/symex
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
acc4dd91d66a42954e3635dc44f370564ea9745982d25f403385bb95b5430f78		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 929 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
834deb39b72243dd7ace01df827058ef00d30f83ccaa5ad265ca7c138e009ff0		 vba-project OOXML VBA project: word/vbaProject.bin 14336 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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