Analysis

  • max time kernel
    110s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 02:17

General

  • Target

    fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916N.exe

  • Size

    2.1MB

  • MD5

    9b000e0fda09dd3e48827f59e54a4a00

  • SHA1

    06db75128ef0b83444fd50cf852ddb443638d1ca

  • SHA256

    fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916

  • SHA512

    08701f2535d988f33b9bb5f1e3f763be3b493d116315726ee3449ded09e51b8724e577cd1b686e210050557b3a1d72ae015f748f000d3e4b7932951f17e86474

  • SSDEEP

    49152:SRbdSh7yx6yXCLYc0IyL2tZLTM5D04JM04:SRyE6yXnIi2aJZ4

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.

  • 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\fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916N.exe
    "C:\Users\Admin\AppData\Local\Temp\fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916N.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:4440
    • C:\Users\Admin\AppData\Local\Temp\3582-490\fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4992

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\fef5359b9dbcdb93e0173b61d1705b7aefa47f4324473feba12548d7707ef916N.exe

    Filesize

    2.1MB

    MD5

    17d5540d79a3b7b4b6a341b1a9be976e

    SHA1

    e204742f610a89f2341c4d72bf3439d04c5bc19d

    SHA256

    8bf7ef4a9e345d3da688a20a6f7b69dbe0c611ae2a07a85dc38a6dab3bae00d2

    SHA512

    90117017b2a7123af199f65cbab40028607a618326c49e17075ad30cda90370ac964f4a8b8d11a8b243259d35c07e6d2bf9e61291c1fdbbf5e4eb55ef208b994

  • memory/4440-104-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4440-107-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4440-110-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4992-12-0x0000000002410000-0x0000000002411000-memory.dmp

    Filesize

    4KB

  • memory/4992-106-0x0000000002410000-0x0000000002411000-memory.dmp

    Filesize

    4KB

  • memory/4992-105-0x0000000000400000-0x000000000061E000-memory.dmp

    Filesize

    2.1MB