Hancitor Office (OLE) / .DOC malware analysis — malicious · 27922213014657f9

MALICIOUS

Office (OLE) / .DOC

855.0 KB Created: 2021-04-14 09:59:00 Authoring application: Microsoft Office Word

MD5: 453be12d12094208a9e44841fc252975 SHA-1: 1a44ad42c39bb39185f54cdf896121152215d5b6 SHA-256: 27922213014657f9ba53f618dee9ec58f5ed9bae68e02f6c05d28e1c3f18d327

760 Risk Score

Malware Insights

Hancitor · confidence 95%

MITRE ATT&CK

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

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro utilizes 'WScript.Shell' to execute an embedded PE executable. This behavior is consistent with the Hancitor malware family, which often uses Office documents to download and execute secondary payloads. The embedded executable was also flagged by ClamAV.

Heuristics 19

Office EPRINT stream contains EMF object high CVE related OLE_EPRINT_EMF_OBJECT

OLE ObjectPool contains an EPRINT stream with EMF data. This is rare in normal documents and is CVE-2007-3893/MS07-046-family evidence when paired with Office exploit payload anomalies, but the malformed EMF record is not proven by this rule alone.
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
WScript.Shell usage critical OLE_VBA_WSCRIPT

WScript.Shell usage
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 CreateProcess API high SC_STR_CREATEPROCESS

Reference to CreateProcess 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
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.microsoft.com/maml/dev/command/2004/10
- http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `0f963a141ff3ff11d30578ae7fa76ea6e907aa0e2c1f6498c2228b8ee1ca98e6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4972 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_0008e87a.exe` `0c64b625a8fac5b99dc81e1a2f14df3c89eb6020942d852f62e8d9a93c158437`	embedded-pe	Office MZ+PE at offset 0x8E87A	291718 bytes
Detection ClamAV: Win.Dropper.Zusy-9856651-0 Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`ole10native_00.bin` `b4aa6a1ecc38e392d8a46036c2d94397bed1a8ce99ec97185ec88d3b5a01fb73`	ole-package	OLE Ole10Native stream: ObjectPool/_1679874523/Ole10Native	235344 bytes

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