Analysis

  • max time kernel
    92s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2024 23:39

General

  • Target

    99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84aN.exe

  • Size

    412KB

  • MD5

    a17c100a9c7f0ed4751dd97475372e40

  • SHA1

    d7ba2f033da19df1209a40078612b3c845997684

  • SHA256

    99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84a

  • SHA512

    89425e3679328c6fc0dfe37640d8c2ddd8522931633f4976682866bf33172579ea94bf88e61b904b2ca633102920ba2d14b0e0b3efcfc9cf361d5d74a9903ef0

  • SSDEEP

    3072:zr8WDrCTKDug8tAZsyyXUg8p3Xh69i2g3tvVs07dzIHsbj0rkSzPXo7rIfTkqO:PuTKDwMyXl8pnh6o2gdyazIHLk+Q7uO

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 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.

  • 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 2 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84aN.exe
    "C:\Users\Admin\AppData\Local\Temp\99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84aN.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:2108
    • C:\Users\Admin\AppData\Local\Temp\3582-490\99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84aN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84aN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2.4MB

    MD5

    d9e8a1fa55faebd36ed2342fedefbedd

    SHA1

    c25cc7f0035488de9c5df0121a09b5100e1c28e9

    SHA256

    bd7696911d75a9a35dfd125b24cb95003f1e9598592df47fa23a2568986a4a9a

    SHA512

    134644c68bd04536e9ea0a5da6e334d36b1ce8012a061fa6dabd31f85c16a1ac9eee8c40fee3d55f25c4d4edf0672de8ce204e344c800361cbcff092c09d7a33

  • C:\Users\Admin\AppData\Local\Temp\3582-490\99404207009a4e5237c4bda21eeb39b363a74662afd4c432bfaad57c7ae8e84aN.exe

    Filesize

    372KB

    MD5

    228644d5cebc67cd2c5c6e7a63f30e94

    SHA1

    96849d85ce313628956c2b199f444b00f92fb250

    SHA256

    7b749111d696a45b391ffdd1d7ce3975a3c0ce621d6315184a3a33e5af6ffb1a

    SHA512

    fbbdce93d7cdeb7fd63bfad0b25f311a461b9a45119939f57612d252139f56781b5faa5370b0837592ea4cdb2ab29f2259fb844825f9fb90613fe32e7a384c4b

  • memory/2108-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2108-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2108-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB