Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2024 00:34

General

  • Target

    840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe

  • Size

    648KB

  • MD5

    55b4ec853390f6e8f0fb4e950aca3640

  • SHA1

    d3a60e1c200257d505dcb8b288c7ab8b7fab5e43

  • SHA256

    840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7

  • SHA512

    289b4e9b9fb011850dc89d4904db0ad2687d95b68b4d63956b7a73570d2b372ef963fd397fc78fa587843540009406fb3dabd41980d8cb77fa9b09aae6123dd9

  • SSDEEP

    12288:DEsd9PZfePv3xl7ft7V+6uC+zd5qLlE03wBf5qUKODnmbCtL:D39PZfePv3r7fm6t+jqpb3A5qfOA4L

Malware Config

Signatures

  • 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\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe
    "C:\Users\Admin\AppData\Local\Temp\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.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:3736
    • C:\Users\Admin\AppData\Local\Temp\3582-490\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Windows\Temp\{EEA8D8DC-9DB0-4CB5-9D32-FB31F898D47E}\.cr\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe
        "C:\Windows\Temp\{EEA8D8DC-9DB0-4CB5-9D32-FB31F898D47E}\.cr\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe" -burn.filehandle.attached=556 -burn.filehandle.self=692
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4708

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

    c324431305861add7ddf9186a9221bd9

    SHA1

    61855e1f81606f3cb336f842a1cdd697c7a40912

    SHA256

    f331213f5bcfed2a6dba0dc0c97b5b309c00b013dc47bdb4726d51cf2c274570

    SHA512

    4b532b2bf6eaf3f618bb08b0a6f7af88ce23d76df146b2d007d5a8224ea0463525a86aacc996468cd3a513404aa66cbc516ed27aa9bd142e46492b160d411dc8

  • C:\Users\Admin\AppData\Local\Temp\3582-490\840defe8e9b6508017a2ff6a571effbbb69a853b0229bb8abd96a6358d0c38f7N.exe

    Filesize

    608KB

    MD5

    d73468bae3dee29164dd9f7fb0ed49cd

    SHA1

    a1eb8fbe9916008d3948ec64b407600b40cc958c

    SHA256

    9b8b7390579a87b3f6a1370a31c92ebdcbbf0d43a4007ee6f66f3c1887681b15

    SHA512

    05c74c09489ac104b9c8e35e339561a0c09687f1b57caceea23c4dc4d199f9bc2e3941e9530a0b8ce0d9ed131892d86a48dbefce6841748d110f2745ac3341c7

  • C:\Windows\Temp\{63159D88-1369-4A41-894F-3B041724CA82}\.ba\bg.png

    Filesize

    4KB

    MD5

    9eb0320dfbf2bd541e6a55c01ddc9f20

    SHA1

    eb282a66d29594346531b1ff886d455e1dcd6d99

    SHA256

    9095bf7b6baa0107b40a4a6d727215be077133a190f4ca9bd89a176842141e79

    SHA512

    9ada3a1757a493fbb004bd767fab8f77430af69d71479f340b8b8ede904cc94cd733700db593a4a2d2e1184c0081fd0648318d867128e1cb461021314990931d

  • C:\Windows\Temp\{63159D88-1369-4A41-894F-3B041724CA82}\.ba\wixstdba.dll

    Filesize

    190KB

    MD5

    f1919c6bd85d7a78a70c228a5b227fbe

    SHA1

    71647ebf4e7bed3bc1663d520419ac550fe630ff

    SHA256

    dcea15f3710822ffc262e62ec04cc7bbbf0f33f5d1a853609fbfb65cb6a45640

    SHA512

    c7ff9b19c9bf320454a240c6abbc382950176a6befce05ea73150eeb0085d0b6ed5b65b2dcb4b04621ef9cca1d5c4e59c6682b9c85d1d5845e5ce3e5eedfd2eb

  • memory/3736-157-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3736-179-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3736-180-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/3736-182-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB