Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 ed3fa9e193f75e97…

MALICIOUS

Office (OLE) / .DOC

735.5 KB Created: 2021-01-11 12:52:00 Authoring application: Microsoft Office Word
MD5: 40db8fcdcd836b6a7ae76b0699ce5d34 SHA-1: 7a196dad299353b9354450c71fbb70cceac4280c SHA-256: ed3fa9e193f75e97c02c48f5c7377ff7a76b827082fdbfb9d6803e1f7bd633ca
760 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer T1059.001 PowerShell

The sample is a malicious OLE document containing VBA macros. The 'Document_Open' macro utilizes Shell() and CreateObject calls, indicative of executing embedded content. A critical heuristic indicates an embedded PE executable, and ClamAV detections confirm this is a dropper for Hancitor and PinkSbot. The document body's instruction to 'EMBED Package' further suggests a user-driven execution of the malicious payload.

Heuristics 19

  • 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.
  • Reference to WriteProcessMemory API critical SC_STR_WRITEPROCESSMEMORY
    Reference to WriteProcessMemory API
  • 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 CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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
1e23a61a097a11bba4a2d9383cb4d2eb5ff7f540a3fdf86a752275ddb368635b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3973 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_00022483.exe
711b4881f98446689d9df5747847c89a27036676d2ad3dd9ff23001c3fa38141		 embedded-pe Office MZ+PE at offset 0x22483 612733 bytes
Detection
ClamAV: Win.Dropper.PinkSbot-9853702-0
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
ole10native_00.bin
8893e536d1b026907a9fe62b846b7e3832bef140e1efca7fbb471dd32cc51983		 ole-package OLE Ole10Native stream: ObjectPool/_1671853112/Ole10Native 570731 bytes
Detection
ClamAV: Win.Dropper.PinkSbot-9853702-0
Obfuscation or payload: unlikely

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