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

Static analysis result for SHA-256 149dbad9d6c03a9a…

MALICIOUS

Office (OLE) / .DOC

546.0 KB Created: 2009-12-11 11:47:44 Authoring application: Advanced Installer 16.2 build 436ecd62
MD5: a609dcb9ae1192bd632dd08a0be6b195 SHA-1: f4e2edd2bbbb8984128cfb94d6b4537a03a6df78 SHA-256: 149dbad9d6c03a9a229e464815ecbf3484a5ea69de3fd92c722b0a33581c08a5
362 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer T1203 Exploitation for Client Execution

The sample is a malicious Office document containing an embedded PE executable, identified by the OLE_EMBEDDED_EXE heuristic. The SE_PASSWORD_ARCHIVE_LURE heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The presence of CreateProcess and ShellExecute API references, along with references to Windows Script Host, suggests the embedded executable is intended to be run, likely to download and execute further stages.

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
ffb7b9112f2225584858f5713dc8d621d3abd0e34171d010faf4339b38760dae		 embedded-pe Office MZ+PE at offset 0x11A00 486912 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 18 shell/COM execution token(s).

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