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

Static analysis result for SHA-256 793d134cdb4bcba4…

MALICIOUS

Office (OLE) / .DOC

624.5 KB Created: 2021-02-10 12:55:00 Authoring application: Microsoft Office Word
MD5: 8e5c0a121fe7ea37edad94288a81c0aa SHA-1: bc41b23ff530fdba694aadbf6c1151df232b7d0a SHA-256: 793d134cdb4bcba47e1f678d052c4d7747b93ea4199714efb8b614321b58dca7
662 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059 Command and Scripting Interpreter T1105 Ingress Tool Transfer T1071.001 Web Protocols

The sample is a malicious Office document containing VBA macros. The Document_Open macro executes a ShellExecute call to run an embedded PE executable. This executable is detected by ClamAV as Win.Packed.Malwarex-9830133-0, and the overall file is identified as Doc.Dropper.Hancitor-9845854-0. The macro's construction of the command line `fa` and `yy` suggests an attempt to execute the embedded file.

Heuristics 16

  • OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514
    Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
  • Metasploit reverse_tcp shellcode critical SC_MSF_REVERSE
    Metasploit reverse_tcp shellcode
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Embedded PE executable critical OLE_EMBEDDED_EXE
    MZ/PE header found inside document — possible embedded executable
  • ClamAV: Doc.Dropper.Hancitor-9845854-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Hancitor-9845854-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to LoadLibrary API high SC_STR_LOADLIBRARY
    Reference to LoadLibrary API
  • Reference to GetProcAddress API high SC_STR_GETPROCADDRESS
    Reference to GetProcAddress API
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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.
  • Reference to VirtualAlloc API medium SC_STR_VIRTUALALLOC
    Reference to VirtualAlloc API
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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.openxmlformats.org/drawingml/2006/main

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f5e449fbe12fd78546027576248992bad333000c6ae670b8808ec6666a268cce		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4454 bytes
embedded_office_0002327b.exe
40a5a86694caaf5124922a9853cba2d1fe1aafa3df2d12d8bd5744e223d3bb9b		 embedded-pe Office MZ+PE at offset 0x2327B 495493 bytes
Detection
ClamAV: Win.Packed.Malwarex-9830133-0
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
ole10native_00.bin
65fe6b2c1749daa23c2c3cf8e45e38ecdfc4f4f2778f62282fd4017e33b9f1ec		 ole-package OLE Ole10Native stream: ObjectPool/_1674438166/Ole10Native 459091 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.