Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 08:54

General

  • Target

    7f22451fdb349cf64713c504551fa5d8.exe

  • Size

    2.1MB

  • MD5

    7f22451fdb349cf64713c504551fa5d8

  • SHA1

    d554b2f29a8ab15a0b2a4b0803e9b913fb8562b0

  • SHA256

    4eeeb09b82ac8340354fcb7b58f1845adff3d47e4f370e612cb1de7951362aef

  • SHA512

    ee98e077777f9892bbf11cdf04cb9a782f3e00b30a56533ae009150d830175f8b1a090b661b01567d96e53088b7d195d452ff524c3be7211f834774434629e62

  • SSDEEP

    49152:C4U5PfQMSJAwQF/UVic/Rg/EyMUO0zsxNhaO7hRN4vbz8Vapvtt:05PdqAwc/XYRg/ERUO0IPFRN4vXi4tt

Malware Config

Signatures

  • Contains code to disable Windows Defender 2 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • VMProtect packed file 2 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7f22451fdb349cf64713c504551fa5d8.exe
    "C:\Users\Admin\AppData\Local\Temp\7f22451fdb349cf64713c504551fa5d8.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3708
    • C:\Users\Admin\AppData\Local\Temp\8XDrnIyHFF.exe
      "C:\Users\Admin\AppData\Local\Temp\8XDrnIyHFF.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4772

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\8XDrnIyHFF.exe

          Filesize

          1.5MB

          MD5

          1a3b165f0b90ea336b0a60deda37a114

          SHA1

          544433f1d7279d84252ae0caa007eea90651844d

          SHA256

          56c2d26dfa12fc48b0c5005b228bc8b4956c05809d55f8e5b7b3749d9538346c

          SHA512

          0329b7e5ed9140cdde87abb2c2f3fca4737c703cd19124c92137bbd397b2d1a068bdd6bb2b43b6536b84cdf19760af7d5d863188f3963d1901f0a65967aeca9d

        • memory/3708-0-0x0000000000400000-0x00000000007C6000-memory.dmp

          Filesize

          3.8MB

        • memory/3708-25-0x0000000000400000-0x00000000007C6000-memory.dmp

          Filesize

          3.8MB

        • memory/4772-18-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

          Filesize

          64KB

        • memory/4772-16-0x0000000009C10000-0x000000000A1B4000-memory.dmp

          Filesize

          5.6MB

        • memory/4772-17-0x0000000009700000-0x0000000009792000-memory.dmp

          Filesize

          584KB

        • memory/4772-15-0x00000000735F0000-0x0000000073DA0000-memory.dmp

          Filesize

          7.7MB

        • memory/4772-19-0x00000000097A0000-0x00000000097FC000-memory.dmp

          Filesize

          368KB

        • memory/4772-20-0x0000000009930000-0x000000000993A000-memory.dmp

          Filesize

          40KB

        • memory/4772-21-0x000000000A9F0000-0x000000000AA9A000-memory.dmp

          Filesize

          680KB

        • memory/4772-22-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

          Filesize

          64KB

        • memory/4772-14-0x00000000005A0000-0x000000000081E000-memory.dmp

          Filesize

          2.5MB

        • memory/4772-27-0x00000000735F0000-0x0000000073DA0000-memory.dmp

          Filesize

          7.7MB

        • memory/4772-28-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

          Filesize

          64KB

        • memory/4772-29-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

          Filesize

          64KB