Analysis

  • max time kernel
    156s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-06-2024 00:54

General

  • Target

    99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd.exe

  • Size

    154KB

  • MD5

    285af36f97d05f702232372c4008ad1b

  • SHA1

    8c574bee092973aa2ff75d6c67245c88e0f809ec

  • SHA256

    99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd

  • SHA512

    cc28e2e0a3ba250eece49cf82579851767651a3a384f0f4e371dfef99627e1086850a3225fad60298e70afcd84cc03e66c9f2d733383678cbc0658afa97ceb26

  • SSDEEP

    1536:JxqjQ+P04wsmJC26B+T5Mj7y1Tp3BcNh2ey1Tp3BcNh2D:sr85C26B+T5zdB2YhdB2YD

Malware Config

Signatures

  • Detect Neshta payload 16 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd.exe
    "C:\Users\Admin\AppData\Local\Temp\99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Users\Admin\AppData\Local\Temp\3582-490\99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd.exe"
      2⤵
      • Executes dropped EXE
      PID:3372
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3372 -s 428
        3⤵
        • Program crash
        PID:3640
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3372 -ip 3372
    1⤵
      PID:3780
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3944 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3780

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Persistence

      Event Triggered Execution

      1
      T1546

      Change Default File Association

      1
      T1546.001

      Privilege Escalation

      Event Triggered Execution

      1
      T1546

      Change Default File Association

      1
      T1546.001

      Defense Evasion

      Modify Registry

      1
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      2
      T1082

      Collection

      Data from Local System

      1
      T1005

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe
        Filesize

        2.4MB

        MD5

        8ffc3bdf4a1903d9e28b99d1643fc9c7

        SHA1

        919ba8594db0ae245a8abd80f9f3698826fc6fe5

        SHA256

        8268d3fefe8ca96a25a73690d14bacf644170ab5e9e70d2f8eeb350a4c83f9f6

        SHA512

        0b94ead97374d74eaee87e7614ddd3911d2cf66d4c49abbfd06b02c03e5dd56fd00993b4947e8a4bcd9d891fa39cab18cc6b61efc7d0812e91eb3aea9cd1a427

      • C:\Users\Admin\AppData\Local\Temp\3582-490\99d0d28eb14396ed20d2835fc7b34313cb6bd39cf2de1da324d069df4a1bd0cd.exe
        Filesize

        114KB

        MD5

        1c3bfdeb198b72bff1db6d1e639af1a8

        SHA1

        27d65a4bf4be185676383298820177c9523d6006

        SHA256

        d0b8ccaa0beba323e0a1436c7d2348dfd2317f7155c3e74b880c23818cb00bf8

        SHA512

        49ea33f69f04f95a0d8bdc0fafe7889ecdf1d0b670ea42f329237e37c8f12c12672eaa1851c5320ca7dc70d44af6c83727ac6c2026f219653d16dd1719674cb8

      • memory/1972-125-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-126-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-99-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-122-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-123-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-124-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-8-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-14-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-127-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-128-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-129-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-130-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-131-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-132-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB

      • memory/1972-133-0x0000000000400000-0x000000000041B000-memory.dmp
        Filesize

        108KB