Analysis

  • max time kernel
    96s
  • max time network
    100s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 15:01

General

  • Target

    525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001N.exe

  • Size

    215KB

  • MD5

    fd5166c62a7938073423fb1297f5c780

  • SHA1

    c3107e34e02f76e6306c652502803b3c447a14a2

  • SHA256

    525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001

  • SHA512

    75857ed5f5bd23f7689265206dc8a0e21c84f9294aebdf316fc7643e6c4111203dfdb8c7b86b353873179f3dc00e87976f75e03b308153f3fc2212063a357f3f

  • SSDEEP

    3072:sr85ChjSIxjXgDH2wC4bzBYcv5KEIop2/FJyMbCarOVNdxkLe:k9hjSIRwH3KErs8arOJxkLe

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\525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001N.exe
    "C:\Users\Admin\AppData\Local\Temp\525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001N.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:2940
    • C:\Users\Admin\AppData\Local\Temp\3582-490\525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4808

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\525f97145af1b436a33b74e36fd96ea1144c99caf8297831cdecee01f949d001N.exe

    Filesize

    174KB

    MD5

    d03dc22b5f6bb05507ca70d4d89a38e2

    SHA1

    b80d3039b720ba7688aa6823aeb3dbf924289403

    SHA256

    87cae336da1a08dc01bb5bb3e958c710265bc59a515132cb782ba189888b7170

    SHA512

    58e0573558d5b560d16aabc7b72f35c53ca4f1e1139bedbe93d5a4e2470c68b8d05464b0fe012523371952796b5a88c9d40e36582707d9fea3683c607fc74c24

  • memory/2940-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2940-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2940-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB