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

Static analysis result for SHA-256 1b0679b55c6ea072…

MALICIOUS

Office (OLE) / .DOC

996.0 KB Created: 2009-12-11 11:47:44 Authoring application: Advanced Installer 16.5 build 8df7ad95
MD5: e9a161572984eaf317cdaa938a443efd SHA-1: c4a8d3c2047ec95b4b2b072fc0d536bbcab11efb SHA-256: 1b0679b55c6ea0727ac51fdd25fb5ae629af959a902bc6a94e431662bf8d9cd0
362 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample is a malicious OLE document containing an embedded PE executable. Heuristics indicate the use of CreateProcess, ShellExecute, LoadLibrary, and GetProcAddress APIs, suggesting the execution of the embedded payload. References to PowerShell and Windows Script Host further indicate potential for script-based execution or download of additional stages. The embedded executable is the primary IOC, likely serving as the initial dropper for further malicious activity.

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 PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • 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
  • Reference to VirtualProtect API medium SC_STR_VIRTUALPROTECT
    Reference to VirtualProtect API
  • 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_00009400.exe
ac243f839631e133022b831f5196637247ca009c8a0b713f12302f09cd2b725a		 embedded-pe Office MZ+PE at offset 0x9400 982016 bytes

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