Analysis

  • max time kernel
    140s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 16:17

General

  • Target
    fcb31f57875f10d553fc2c9d685340a0_NEAS.exe
  • Size 6.5MB
  • Sample240507-trkbcsec3t
  • SHA256 3b3a2627f92f4f648fe96e482c7388423a27db421cecc0d22d1feac08b3c6dce
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 4 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 2 IoCs
  • Loads dropped DLL 12 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.

  • Enumerates connected drives 3 TTPs 25 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 30 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\fcb31f57875f10d553fc2c9d685340a0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\fcb31f57875f10d553fc2c9d685340a0_NEAS.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:4688
    • C:\Users\Admin\AppData\Local\Temp\3582-490\fcb31f57875f10d553fc2c9d685340a0_NEAS.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\fcb31f57875f10d553fc2c9d685340a0_NEAS.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1596
      • \??\c:\33ce2d80237f5d35f61c4454\setup.exe
        c:\33ce2d80237f5d35f61c4454\setup.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Enumerates connected drives
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1340
        • C:\Windows\system32\pcaui.exe
          "C:\Windows\system32\pcaui.exe" -g {11111111-1111-1111-1111-111111111111} -x {556a2de2-4ab5-447f-a840-1509753ac043} -a "Visual Studio 2005" -v "Microsoft" -s "This app can't run because it causes security or performance issues on Windows. A new version may be available. Check with your software provider for an updated version that runs on this version of Windows." -n 1 -f 0 -k 0 -e "c:\33ce2d80237f5d35f61c4454\setup.exe"
          4⤵
            PID:1432
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe queue pause
            4⤵
            • Drops file in Windows directory
            PID:3056
          • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.exe
            C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.exe queue pause
            4⤵
            • Drops file in Windows directory
            PID:1048
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe queue continue
            4⤵
            • Drops file in Windows directory
            PID:1348
          • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.exe
            C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.exe queue continue
            4⤵
            • Drops file in Windows directory
            PID:2916
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1908

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          gencomp.dll

          • Path C:\33ce2d80237f5d35f61c4454\gencomp.dll
          • Size 1.0MB
          • SHA256 0a1e410ae9c709b8018500d2318a3ee8d4bd4d38c6025b8bc1c587980a22fb32
          • MD5 SHA1 SHA512 SSDEEP

          setup.exe

          • Path C:\33ce2d80237f5d35f61c4454\setup.exe
          • Size 356KB
          • SHA256 c1134135f541566ddd8156dfab04cb13b2e1c3e7fb6bb99e326fe2610422ea2f
          • MD5 SHA1 SHA512 SSDEEP

          setupres.dll

          • Path C:\33ce2d80237f5d35f61c4454\setupres.dll
          • Size 78KB
          • SHA256 01021ce0a37f96e702cbc57abc2f73eac74ffa60e256a568a35512a739447f6a
          • MD5 SHA1 SHA512 SSDEEP

          vs70uimgr.dll

          • Path C:\33ce2d80237f5d35f61c4454\vs70uimgr.dll
          • Size 577KB
          • SHA256 283744df4ce63012f2808f2d17da3a92934227e981b880996a487d6dcd6676fe
          • MD5 SHA1 SHA512 SSDEEP

          vsbasereqs.dll

          • Path C:\33ce2d80237f5d35f61c4454\vsbasereqs.dll
          • Size 528KB
          • SHA256 69565cd3684d788f0220ba3f5eac56b57c84043f584204a8b352eacec3dfb0e3
          • MD5 SHA1 SHA512 SSDEEP

          ACROTE~1.EXE

          • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
          • Size 86KB
          • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
          • MD5 SHA1 SHA512 SSDEEP

          fcb31f57875f10d553fc2c9d685340a0_NEAS.exe

          • Path C:\Users\Admin\AppData\Local\Temp\3582-490\fcb31f57875f10d553fc2c9d685340a0_NEAS.exe
          • Size 6.5MB
          • SHA256 c18148c3067769d975d502de491ebe02822d3ccbd99e74f0070ca82082e01e60
          • MD5 SHA1 SHA512 SSDEEP

          dd_depcheckdotnetfx30.txt

          • Path C:\Users\Admin\AppData\Local\Temp\dd_depcheckdotnetfx30.txt
          • Size 1KB
          • SHA256 7379d3d5d89c79d4d829c3bcf4e6ca01625d9004ed6f86dfe9c82a5b9d030fb6
          • MD5 SHA1 SHA512

          dd_depcheckdotnetfx30.txt

          • Path C:\Users\Admin\AppData\Local\Temp\dd_depcheckdotnetfx30.txt
          • Size 6KB
          • SHA256 25d7b86b7dd465166b31201893808a41e21f4d7e59e11762b70787df184ca57f
          • MD5 SHA1 SHA512 SSDEEP

          ngen.log

          • Path C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.log
          • Size 71KB
          • SHA256 7846c5f071d28b9221e1d567c7a3a25e83311e3bbb23788432f470def080322f
          • MD5 SHA1 SHA512 SSDEEP

          ngen.log

          • Path C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.log
          • Size 72KB
          • SHA256 9d2498ac3e81c344f40420cf2aecca896125fa39051739364ae1f7d61a425bb2
          • MD5 SHA1 SHA512 SSDEEP

          ngen.log

          • Path C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.log
          • Size 44KB
          • SHA256 3130389a10c832c6f8c8a1cd2381e0c11b6189a369d18e60e403dc5f161632fa
          • MD5 SHA1 SHA512 SSDEEP

          ngen.log

          • Path C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.log
          • Size 44KB
          • SHA256 948780c3a7abcab2b8d968d181c6f4ee64e0be2cfdbde56e295d2465abd85541
          • MD5 SHA1 SHA512 SSDEEP

          DefFactory.dat

          • Path \??\c:\33ce2d80237f5d35f61c4454\DefFactory.dat
          • Size 896B
          • SHA256 da155842ee2e71878a1aa3a2b8b96c6bc9d4324ab26971fa6c54e7ab95cefb60
          • MD5 SHA1 SHA512

          HtmlLite.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\HtmlLite.dll
          • Size 159KB
          • SHA256 af120233866b3669c012a010640aad4f8663d12b2ce847485953b129262c0b2c
          • MD5 SHA1 SHA512 SSDEEP

          LocData.ini

          • Path \??\c:\33ce2d80237f5d35f61c4454\LocData.ini
          • Size 28KB
          • SHA256 05966b68725242ab25bcac8ef1a58b0d607278ec0cb4990207c8e78c0e076614
          • MD5 SHA1 SHA512 SSDEEP

          WapRes.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\WapRes.dll
          • Size 96KB
          • SHA256 ec0cd21783c5b93f62216bdf2aa2899d64918400d35ef82dfeadc694bdb5233f
          • MD5 SHA1 SHA512 SSDEEP

          baseline.dat

          • Path \??\c:\33ce2d80237f5d35f61c4454\baseline.dat
          • Size 14KB
          • SHA256 88674e86ea9f5f7c4b0794d62deae82707832b21c607409177e85e7c9314189b
          • MD5 SHA1 SHA512 SSDEEP

          dlmgr.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\dlmgr.dll
          • Size 215KB
          • SHA256 b0571057d6533f1363e0b531af0ee79e1ab6d41b6d3673217cf8695f10a6798a
          • MD5 SHA1 SHA512 SSDEEP

          logo.bmp

          • Path \??\c:\33ce2d80237f5d35f61c4454\logo.bmp
          • Size 5KB
          • SHA256 0d6e46ff07901cc9d82e8fd76f8477474c3f440bf2e43ee5cea859c0095962a2
          • MD5 SHA1 SHA512 SSDEEP

          setup.sdb

          • Path \??\c:\33ce2d80237f5d35f61c4454\setup.sdb
          • Size 52KB
          • SHA256 f832da5e634c885b0415f81ea91f446ad7daaea8d5b080084837bab9c1d3488b
          • MD5 SHA1 SHA512 SSDEEP

          sitsetup.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\sitsetup.dll
          • Size 1.5MB
          • SHA256 dea6365f57f897aa36fe70471f606e0107bdb6a441dfea0d2515bda09db622f0
          • MD5 SHA1 SHA512 SSDEEP

          vs_setup.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\vs_setup.dll
          • Size 1.1MB
          • SHA256 f3ad9c08dd434aed993ee89f3e1d95cd04f88973de18825dc052df70a60a9065
          • MD5 SHA1 SHA512 SSDEEP

          vs_setup.msi

          • Path \??\c:\33ce2d80237f5d35f61c4454\vs_setup.msi
          • Size 464KB
          • SHA256 1f41693e4a28e2520c386c3a9815c8bbb50f636fb4810683249e5a02820636aa
          • MD5 SHA1 SHA512 SSDEEP

          vs_setup.pdi

          • Path \??\c:\33ce2d80237f5d35f61c4454\vs_setup.pdi
          • Size 2KB
          • SHA256 6ce89e8806b3f50746a081f44a9b25225df41101300b81479f81e186172f7fa4
          • MD5 SHA1 SHA512

          vsscenario.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\vsscenario.dll
          • Size 797KB
          • SHA256 ee05f65ba01cb5b9ef021ddcc32fc1bac12d347d572857f1c53935129d0474df
          • MD5 SHA1 SHA512 SSDEEP

          wapui.dll

          • Path \??\c:\33ce2d80237f5d35f61c4454\wapui.dll
          • Size 1.1MB
          • SHA256 17fefe900842f4e7f11b3d6de609143b88c1803e5f252f291d1930427d97ede6
          • MD5 SHA1 SHA512 SSDEEP

          memory/4688-273-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/4688-274-0x0000000000400000-0x000000000041B000-memory.dmp

          memory/4688-276-0x0000000000400000-0x000000000041B000-memory.dmp