Hancitor Office (OLE) / .DOC malware analysis — malicious · dfdf79d355c1098d

MALICIOUS

Office (OLE) / .DOC

322.0 KB Created: 2020-11-19 12:57:00 Authoring application: Microsoft Office Word

MD5: 06ba06269873237b18c23a82da59f492 SHA-1: d18f046a0fdbefb79ec85a22404e402e6e56f2bf SHA-256: dfdf79d355c1098d4cceaf4591200d35000ad86a585df727b3e7e6cf7dd58e95

660 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 Office document containing VBA macros. The AutoOpen macro is configured to execute a shell command, which likely downloads and executes a second-stage payload from the embedded PE executable. ClamAV detections confirm this is a Hancitor variant, a known downloader.

Heuristics 17

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
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
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen 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.

Filename	Kind	Source	Size
`macros.bas` `d656d7ed79165651454fb1e871cd5ab280646db1f74a42c5655e67fc6a8fb77d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2851 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_00022e9c.exe` `bfb1a484a1fe5a0b08dce334028e91319853685f7dc94eac1bfaa4f6959a4385`	embedded-pe	Office MZ+PE at offset 0x22E9C	186724 bytes
Detection ClamAV: Win.Keylogger.Cridex-9807692-0 Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`ole10native_00.bin` `2cb1f3def1a775b3f13f4b03eb37819c6a5f97f5a4e6b5880ba7e279d297d2e3`	ole-package	OLE Ole10Native stream: ObjectPool/_1667265592/Ole10Native	160182 bytes

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