Analysis

  • max time kernel
    152s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21/06/2022, 08:55

General

  • Target

    vbc.exe

  • Size

    302KB

  • MD5

    0236dcc27cfb3d09325c976002567985

  • SHA1

    e1605510f182a0c6f8d3297355d9ceb00489df7c

  • SHA256

    e640ade723ba4aa48f63db4293d15b61c07c05bfdd93a3a0f83f4a177306b87d

  • SHA512

    512d6736ced5df8022ff26e1581f2ee7dfcef0f10c3b2e5324ac7ba16cee52f1db687a5921e8c72edc7d32a9467b161dc966c4f34f16d4ea13003e1f1f899081

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

vweq

Decoy

malang-media.com

mrsfence.com

lubetops.com

aitimedia.net

montecryptocapital.com

ahwmedia.com

bvmnc.site

bggearstore.com

bcsantacoloma.online

alltimephotography.com

santacruz-roofings.com

leaplifestyleenterprises.com

censovet.com

similkameenfarms.com

undisclosed.email

thetrinityco.com

rapiturs.com

jedlersdorf.info

mh7jk12e.xyz

flygurlblogwordpress.com

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\vbc.exe
      "C:\Users\Admin\AppData\Local\Temp\vbc.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:1712
    • C:\Windows\SysWOW64\NAPSTAT.EXE
      "C:\Windows\SysWOW64\NAPSTAT.EXE"
      2⤵
      • Suspicious use of SetThreadContext
      • Modifies Internet Explorer settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1252
      • C:\Program Files\Mozilla Firefox\Firefox.exe
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        3⤵
          PID:1672

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1204-65-0x00000000068D0000-0x00000000069EB000-memory.dmp

            Filesize

            1.1MB

          • memory/1204-72-0x0000000006EF0000-0x000000000703C000-memory.dmp

            Filesize

            1.3MB

          • memory/1204-71-0x0000000006EF0000-0x000000000703C000-memory.dmp

            Filesize

            1.3MB

          • memory/1252-73-0x0000000076461000-0x0000000076463000-memory.dmp

            Filesize

            8KB

          • memory/1252-70-0x0000000001DB0000-0x0000000001E40000-memory.dmp

            Filesize

            576KB

          • memory/1252-69-0x0000000002000000-0x0000000002303000-memory.dmp

            Filesize

            3.0MB

          • memory/1252-68-0x0000000000080000-0x00000000000AB000-memory.dmp

            Filesize

            172KB

          • memory/1252-67-0x00000000008E0000-0x0000000000926000-memory.dmp

            Filesize

            280KB

          • memory/1712-59-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1712-64-0x0000000000280000-0x0000000000291000-memory.dmp

            Filesize

            68KB

          • memory/1712-63-0x0000000000B90000-0x0000000000E93000-memory.dmp

            Filesize

            3.0MB

          • memory/1712-62-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1712-57-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1712-56-0x0000000000400000-0x000000000042B000-memory.dmp

            Filesize

            172KB

          • memory/1792-54-0x0000000000C10000-0x0000000000C62000-memory.dmp

            Filesize

            328KB

          • memory/1792-55-0x00000000003E0000-0x0000000000414000-memory.dmp

            Filesize

            208KB