IcedID — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 ed25e2fb318b3068…

MALICIOUS

Office (OOXML) / .DOC

155.5 KB Created: 2020-10-28 18:24:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: f762fa9eba6cd651676a57ea173c89db SHA-1: 251285c3981a5e4cc4ae408bffa5ed45f57c92ba SHA-256: ed25e2fb318b3068c3ecbfec1cc175b55b67bb9d0cc096f27464fb2e30db7876
208 Risk Score

Malware Insights

IcedID · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The file contains a VBA project with an AutoOpen macro, which is a common technique for executing malicious code upon opening the document. The ClamAV signature and heuristic firings strongly indicate this is an IcedID dropper. The VBA macro likely downloads and executes a second-stage payload, as suggested by the 'CreateObject' and 'Environ' calls, and the presence of embedded URLs, although the specific download URL is not directly visible in the provided evidence. The file's SHA256 hash is included as a primary IOC.

Heuristics 7

  • ClamAV: Doc.Dropper.IcedID-9799485-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.IcedID-9799485-1
  • 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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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.microsoft.com/office/drawing/2015/9/8/chartex
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartex
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartex
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.microsoft.com/office/drawing/2016/ink
    • http://schemas.microsoft.com/office/drawing/2017/model3d
    • 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/2018/wordml/cex
    • http://schemas.microsoft.com/office/word/2016/wordml/cid
    • http://schemas.microsoft.com/office/word/2018/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
573537e50a9da0ec40f9123ae98373f2a0906f5238a6b5e5d966a3aa2e1215ff		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 15980 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
e69fada83fa948b5ea97373ab52a71b4995dc048d2d58c1f1204bc697a33fefa		 vba-project OOXML VBA project: word/vbaProject.bin 54784 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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