Overview

overview

8

Static

static

3

purity.exe

windows7-x64

8

purity.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 17:02

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General

  • Target

    purity.exe

  • Size

    914KB

  • MD5

    09b4990cfdc4b968b00530f2a27ff82d

  • SHA1

    600322619eb375cc09e000222b824ea47b29525e

  • SHA256

    e5b2c802fd398dcf09a7ac7242f9a3bdaa2a2d7abf08a3cc597ff0365a1abfbc

  • SHA512

    d9d23ba74e7a366e9c7ca1b9164b509715ca043afffa1fac9e16d064effdf3dc69e25e57ab1ad32a52eede770b2126aa32a93d406c28fe7cdadcfc4ab5d085cd

  • SSDEEP

    24576:WRC1WFteOptl7do60OegX7AoonjMXnMvQo:91wXdD0Ervonj

Score
8/10
persistence

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\purity.exe
    "C:\Users\Admin\AppData\Local\Temp\purity.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
        PID:3788
      • C:\Windows\SoftwareDistribution\Download\unknowncheatsme.exe
        "C:\Windows\SoftwareDistribution\Download\unknowncheatsme.exe" C:\Windows\SoftwareDistribution\Download\unknowncheatsme.sys
        2⤵
        • Sets service image path in registry
        • Executes dropped EXE
        • Suspicious behavior: LoadsDriver
        • Suspicious use of AdjustPrivilegeToken
        PID:2400
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c cls
        2⤵
          PID:4364

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Windows\SoftwareDistribution\Download\unknowncheatsme.exe
              Filesize

              134KB

              MD5

              34cfbe3ff70461820ccc31a1afeec0b3

              SHA1

              5d32e91c039c9a6f723ba3c04c1179d02e6a0ce9

              SHA256

              6ebcc6896b243c761da4fc28a26249b0c146ae17aff7697c09bc447008e831df

              SHA512

              1ca4661be645e7e954d89c83f1fd126a5e936533052d4e330c9faccb83bb5942d28265375cee743e468b1625a0c1f10888e7957fe88c718e8501a86a78cdc06e

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