Hancitor Office (OLE) / .DOC malware analysis — malicious · 8dabac2e9e7f3d55

MALICIOUS

Office (OLE) / .DOC

578.5 KB Created: 2021-02-02 08:57:00 Authoring application: Microsoft Office Word

MD5: 076f3710f2795a28df782fc9b15b5915 SHA-1: 7f3dea4e4bd60e2eb1247f2998bd1d1d57e07205 SHA-256: 8dabac2e9e7f3d5535d5913b8c52f5210013f5de6fa362bab4f893385c69c39f

600 Risk Score

Malware Insights

Hancitor · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1105 Ingress Tool Transfer T1204.002 Malicious File

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 executes a Shell() command. This command likely launches the embedded PE executable, as confirmed by the OLE_EMBEDDED_EXE heuristic and ClamAV detections. The presence of the 'Hancitor' family name in a ClamAV detection further supports this assessment.

Heuristics 15

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
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.

Filename	Kind	Source	Size
`macros.bas` `a8f90e80605df2c4af352e420e7afc413a8c2aab62a11cdc89449acc25777ccc`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4338 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_0002247b.exe` `ac0befe05f295057a5c216d1d83fcba77c79fe84523fd38303b7732347ec8405`	embedded-pe	Office MZ+PE at offset 0x2247B	451973 bytes
Detection ClamAV: Win.Trojan.Generic-9829447-0 Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`ole10native_00.bin` `25a2ad8e2e2ad4b8145b9724157de2e23d899953efb7527396409ddd9461d7d8`	ole-package	OLE Ole10Native stream: ObjectPool/_1673732636/Ole10Native	414035 bytes
Detection ClamAV: Win.Trojan.Generic-9829447-0 Obfuscation or payload: unlikely

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