Hancitor — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 fbd4d497f7eb0a43…

MALICIOUS

Office (OLE) / .DOC

503.0 KB Created: 2021-02-04 12:36:00 Authoring application: Microsoft Office Word
MD5: 62639fb01242279c8f8526a6512e545e SHA-1: 487a92e09f7d4d1562f9b3b6512ae3771eaaa881 SHA-256: fbd4d497f7eb0a43abc98382f843872f75173d8fdb8f06799198b0e1164c0e95
680 Risk Score

Malware Insights

Hancitor · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample is a malicious OLE document containing VBA macros. The Document_Open macro utilizes Shell() and CreateObject() to execute an embedded PE executable. This behavior is consistent with Hancitor droppers, which are known to download and execute second-stage payloads. The presence of the embedded PE and the specific VBA functions strongly indicate a malicious intent for payload delivery.

Heuristics 17

  • 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.
  • PEB access via FS segment (x86) high SC_PEB_ACCESS
    PEB access via FS segment (x86)
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • 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 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://go.microsoft.com/fwlink/?LinkID=113346
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d58f6ccdb6bb51034250d395c9aa570b4c28c6071dbd02a4f314b462213676cb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4384 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_0002227b.exe
ae1fdfb70b6ed38760b1001b50ad4e0c60603a5aa98a5d16624dad88d4dd4ade		 embedded-pe Office MZ+PE at offset 0x2227B 375173 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
b299806f8309945650d2ecee025bfbe578d3875729c90446b2708e9a4d7c1002		 ole-package OLE Ole10Native stream: ObjectPool/_1673918584/Ole10Native 337747 bytes

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