Analysis

  • max time kernel
    102s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2025, 19:16

General

  • Target

    03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe

  • Size

    648KB

  • MD5

    297fe41851ffdcda6a04d516f1c57ab3

  • SHA1

    3373570502c28fbbd42c2c03ef8dd4f9598b5b2c

  • SHA256

    03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d

  • SHA512

    2d33016813c108a33c4dadbf7c74f14b571219f6b2f503f126c2e722b996509c07e24ddfc0150294b422904dcfc761c9bbfada1e9c9bfb0442fa0fafbef935b2

  • SSDEEP

    12288:fEsd9PZfePv3xl7ft7V+6uC+zd5qLl4fFwOcTWskvbsiDnm5L:f39PZfePv3r7fm6t+jqpcF+TSbsiOL

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • Neshta

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

  • Neshta family
  • 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 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe
    "C:\Users\Admin\AppData\Local\Temp\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Users\Admin\AppData\Local\Temp\3582-490\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\Temp\{F1C61DF9-63FA-400B-A66E-A8F17E6FD5AD}\.cr\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe
        "C:\Windows\Temp\{F1C61DF9-63FA-400B-A66E-A8F17E6FD5AD}\.cr\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe" -burn.filehandle.attached=560 -burn.filehandle.self=656
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    a40427e3788637e741fb69ea8d76cd52

    SHA1

    f8c8c7ec493e32a7573d90ce400fccd79fc98f31

    SHA256

    18dcc8fae245869d02b7db0edbe22ec57a30bdd51a64090452118a79ba194052

    SHA512

    e6b688d4ad0506c74db323b50a2588472f45e66da2a3456450aea96d93882b13662f8b3bbed7773180f5bec851a31d2e45262ecb9283b425c60c8caa06d56ca2

  • C:\Users\Admin\AppData\Local\Temp\3582-490\03c2dbaa6654cfec06f31d9b710603a2c3cd369e8aeb6c473858b4cc9724e03d.exe

    Filesize

    608KB

    MD5

    93260c3476e06034a3428cf3dac24a3c

    SHA1

    7b0c2df7c9efeb51a7e093b47eae30d21685a7f2

    SHA256

    6d9aa8292689a03a6b36385b16e2310a81b285c56096ee6228bf402611e3dae2

    SHA512

    2dd05c36e38c41c932a0d8ba8f1d6072849f202a552bc8799a8a36e53b018fee6b9cc13d52ed111700b668c25ee816e6ae5935d5ce65f13e9881bf8b4fa67693

  • C:\Windows\Temp\{FD5FB951-1528-4F04-8BAD-BC16926B9664}\.ba\bg.png

    Filesize

    4KB

    MD5

    9eb0320dfbf2bd541e6a55c01ddc9f20

    SHA1

    eb282a66d29594346531b1ff886d455e1dcd6d99

    SHA256

    9095bf7b6baa0107b40a4a6d727215be077133a190f4ca9bd89a176842141e79

    SHA512

    9ada3a1757a493fbb004bd767fab8f77430af69d71479f340b8b8ede904cc94cd733700db593a4a2d2e1184c0081fd0648318d867128e1cb461021314990931d

  • C:\Windows\Temp\{FD5FB951-1528-4F04-8BAD-BC16926B9664}\.ba\wixstdba.dll

    Filesize

    190KB

    MD5

    f1919c6bd85d7a78a70c228a5b227fbe

    SHA1

    71647ebf4e7bed3bc1663d520419ac550fe630ff

    SHA256

    dcea15f3710822ffc262e62ec04cc7bbbf0f33f5d1a853609fbfb65cb6a45640

    SHA512

    c7ff9b19c9bf320454a240c6abbc382950176a6befce05ea73150eeb0085d0b6ed5b65b2dcb4b04621ef9cca1d5c4e59c6682b9c85d1d5845e5ce3e5eedfd2eb

  • memory/4416-0-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB

  • memory/4416-188-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB

  • memory/4416-210-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB

  • memory/4416-212-0x0000000000400000-0x000000000042B000-memory.dmp

    Filesize

    172KB