Office (OLE) / .DOC malware analysis — malicious · 828a308d7e541fb9

MALICIOUS

Office (OLE) / .DOC

229.0 KB Created: 2023-03-21 21:40:00 Authoring application: Microsoft Office Word First seen: 2023-03-22

MD5: d16fb990f2db97fdf879610ade214aed SHA-1: dbd20110ac267dc54d93b73e4abadef995a87411 SHA-256: 828a308d7e541fb96aa897cb5e0cbf35dee1b7d9df9556a1a3b8486954714c2b

192 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample contains a VBA macro that utilizes CreateObject and CallByName functions, indicative of malicious intent. The macro appears to construct a path and a filename, likely for a second-stage payload, and then executes it. The reconstructed filename is 'oHilvwiZLyeRJtrFjmzByhTNeWxe2vtSHNzBp3tPgbXyKLmZOaYSVYgThPzxshJCBjvfSPDoGxEhxZiRueE.vrrqScdP' and the path is '\\bQLlv\\'. This suggests the macro's primary function is to download and execute a further payload.

Heuristics 8

AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
CallByName call high OLE_VBA_CALLBYNAME

CallByName 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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
Suspicious extracted artifact info 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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `1bbe081fd7c009e8295b4ec509310df3a3a8db3604775d75c50b41455382dc86`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	38583 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 long base64-like blob(s).

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