Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 cbac039ec926124f…

MALICIOUS

Office (OOXML)

1.61 MB Created: 2021-09-16 09:04:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-10-11
MD5: 850ba0a417bba13f3e948659ff4cf7b2 SHA-1: d624dc335176f325ece70ee14fb5213155e854de SHA-256: cbac039ec926124f8cedfeb87eaff66be150d7bbf468c2572b5ed42463444c67
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document employs a lure to enable macros and instructs the user to copy sensitive information into a command-line context, such as PowerShell or cmd. This is a high-risk technique aimed at extracting secrets or facilitating further execution. The presence of external hyperlinks suggests potential redirection or further stages.

Heuristics 6

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • External hyperlinks (10) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 10 external hyperlinks — clickable URLs are stored as external relationships. First target: https://github.com/nipunjaswal/networkforensics/tree/master/Ch7
  • 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://www.netresec.com/?page=Networkminer In macro / runtime command snippet
    • https://github.com/nipunjaswal/networkforensics/tree/master/Ch7Document hyperlink
    • https://defuse.ca/online-x86-assembler.htmIn document text (OOXML body / shared strings)
    • https://subinsb.com/default-device-ttl-values/In document text (OOXML body / shared strings)
    • https://www.cert.se/2017/09/cert-se-tekniska-rad-med-anledning-av-det-aktuella-dataintrangsfallet-b-8322-16In document text (OOXML body / shared strings)
    • https://github.com/nipunjaswal/networkforensics/tree/master/ChallengesIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartexIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/inkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2017/model3dIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordml/cexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2016/wordml/cidIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2020/wordml/sdtdatahashIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)
    • https://www.offensive-security.com/kali-linux-vm-vmware-virtualbox-image-download/In document text (OOXML body / shared strings)
    • https://www.wireshark.org/download.htmlIn document text (OOXML body / shared strings)
    • https://khr0x40sh.wordpress.com/2013/06/25/exporting-runtime-private-key-for-msfs-meterpreter-reverse-tcp-and-https/In document text (OOXML body / shared strings)
    • https://drive.google.com/open?id=0B7pTM0QU5apSdnF0Znp1Tko0amsIn document text (OOXML body / shared strings)

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