Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 5d413bf1c985529c…

MALICIOUS

Office (OLE) / .DOC

548.0 KB Created: 2009-12-11 11:47:44 Authoring application: Advanced Installer 16.2 build 436ecd62
MD5: 689fca624befa2dbf7fb003858686e70 SHA-1: 091fe81f5e69f27256966e17dff427b164bb0bed SHA-256: 5d413bf1c985529c38399323a7c2698371319332241b4e9bf55a47b51857aca8
362 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1105 Ingress Tool Transfer T1566.001 Spearphishing Attachment

The sample is a malicious OLE document containing an embedded PE executable. Heuristics indicate the document attempts to create new processes and shell execute, likely to launch the embedded payload. The presence of the embedded executable and the references to CreateProcess and ShellExecute APIs strongly suggest an attempt to execute the embedded malware. The document also contains references to Windows Script Host, indicating potential script execution.

Heuristics 10

  • Embedded PE executable critical OLE_EMBEDDED_EXE
    MZ/PE header found inside document — possible embedded executable
  • PEB access via FS segment (x86) high SC_PEB_ACCESS
    PEB access via FS segment (x86)
  • Reference to CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Reference to LoadLibrary API high SC_STR_LOADLIBRARY
    Reference to LoadLibrary API
  • Reference to GetProcAddress API high SC_STR_GETPROCADDRESS
    Reference to GetProcAddress API
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Suspicious extracted artifact medium 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.
  • 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://t2.symcb.com0
    • http://tl.symcd.com0&
    • http://s.symcd.com06
    • http://ts-ocsp.ws.symantec.com0
    • http://t1.symcb.com/ThawtePCA.crl0
    • http://tl.symcb.com/tl.crl0
    • https://www.thawte.com/cps0/
    • https://www.thawte.com/repository0W
    • http://tl.symcb.com/tl.crt0
    • https://www.advancedinstaller.com
    • https://d.symcb.com/cps0%
    • https://d.symcb.com/rpa0
    • http://s.symcb.com/universal-root.crl0
    • https://d.symcb.com/rpa0@
    • http://ts-crl.ws.symantec.com/sha256-tss-ca.crl0
    • http://ts-aia.ws.symantec.com/sha256-tss-ca.cer0(

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_office_00011a00.exe
fdc34fe75b9b35b6d6274d75ca6abb2fd9fd7ad03ec4281041ac0ed5c2207573		 embedded-pe Office MZ+PE at offset 0x11A00 488960 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 18 shell/COM execution token(s).

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