Hancitor — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 f6ac72773b856d71…

MALICIOUS

Office (OLE) / .DOC

309.5 KB Created: 2021-03-01 10:41:00 Authoring application: Microsoft Office Word
MD5: 5b88ce7b6d291bcc66ba051a506354a9 SHA-1: 39399130b340c650a2586017b25697042b5017d5 SHA-256: f6ac72773b856d715ea59ca3f0392877d68c326faf1c005bdd2cf89a018b70cd
620 Risk Score

Malware Insights

Hancitor · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer T1204.002 Malicious File T1027 Obfuscated Files or Information

The sample is a malicious OLE document containing VBA macros. The critical 'OLE_VBA_SHELL' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristics indicate that the Document_Open macro uses the Shell() function to execute code. Furthermore, an embedded PE executable was detected and flagged as suspicious. ClamAV detections for 'Doc.Dropper.Hancitor-9845854-0' and 'Win.Dropper.Hancitor-9835665-0' strongly suggest the Hancitor family. The embedded executable is likely a downloader for second-stage payloads.

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.
  • 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
  • Reference to VirtualProtect API medium SC_STR_VIRTUALPROTECT
    Reference to VirtualProtect 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
a01932724a9e8ce63b49bb1861114145750bbedf305ff2d6e83cf03f50302c9f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4535 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.
embedded_office_00021a84.exe
3fc92a7b3e89d294d6d0141e7ac15c0af79ed90f9a699be21f04b4f00fe9536f		 embedded-pe Office MZ+PE at offset 0x21A84 179068 bytes
Detection
ClamAV: Win.Dropper.Hancitor-9835665-0
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
ole10native_00.bin
2967222fd0a0702b0dd3714ba35785d509e79f16b6e00aabddf82ed941b2e59e		 ole-package OLE Ole10Native stream: ObjectPool/_1676071657/Ole10Native 139630 bytes

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