Analysis

  • max time kernel
    139s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 21:13

General

  • Target

    31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731.exe

  • Size

    1.6MB

  • MD5

    962fb25aaaab5b565d4c992ecb83596e

  • SHA1

    a6adf24f79a6d864bde82076d8baf47b77989d2b

  • SHA256

    31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731

  • SHA512

    9fdf9158e9fd603592a64218ec81f2cc12085601d19ca663da8b30d4ec0fde23c0358740350c4867daecfbe821ea2bc45ed977f9ca045fef5721bbd890846eed

  • SSDEEP

    12288:LBpL8L1Z6zhlQNob754zNv6yJfoz4quIbS5fB5ongqFODx7eaSmaubyoNFNQobne:t5uDGbtIanSlNQ4zV3E

Malware Config

Signatures

  • Detect Neshta payload 6 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 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731.exe
    "C:\Users\Admin\AppData\Local\Temp\31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731.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:3748
    • C:\Users\Admin\AppData\Local\Temp\3582-490\31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4684

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

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\31d40235156f22f5b07c2ac1bf5d5b9fe45a9615829e683cefaa9c180ed24731.exe

    Filesize

    1.6MB

    MD5

    40db8f3caf3816469f208345d9b05f73

    SHA1

    df7eb7339b265ed2afd669c7f47633bcf3a055c8

    SHA256

    aab67dc4e5b2509c4729d64f42cab05e10a9f4d6346058532a03fa4b3da09116

    SHA512

    cd8bf1544d4b27c1aa0c9d3e876fe47463bdc6e99205b3cab978bee3260cee4bf679881a02b289363bd5300b2a296419f26154d0be7269c313d159c8a6234731

  • memory/3748-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3748-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3748-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3748-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3748-102-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB