Office (OLE) / .DOC malware analysis — malicious · f8a0ad02e44f55a0

MALICIOUS

Office (OLE) / .DOC

68.0 KB Created: 2022-02-22 11:42:00 Authoring application: Microsoft Office Word First seen: 2022-02-23

MD5: 7baa64ea69f5fa343ca13283c1ca2a6c SHA-1: 514140cd2bbea6f667bcb064e7b909ef09a28d77 SHA-256: f8a0ad02e44f55a0cd39a8732f454bf0ce448b96dbe530c3e23cbdf964b12669

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1059.005 Visual Basic

The VBA macro within the document is configured to execute automatically upon opening (Document_Open). It constructs a file path 'C:\Users\Public\apersonem.b' and writes a PowerShell command to it. This command uses Start-BitsTransfer to download 'Unosvpn.exe' from 'https://ramail.x24hr.com/s/Unosvpn.exe' to 'C:\Users\Public\Documents\largevote.exe', and then executes the downloaded file. The ShellExecuteW API is used to open the constructed file, initiating the payload execution.

Heuristics 5

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
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
Suspicious extracted artifact medium 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `3a9f62b6d8b05bc5ba6357c24dc4165a7d7a4148fb1ff1450a0eac86e79970aa`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1562 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.