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Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/01/2025, 08:39

General

  • Target

    8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377N.exe

  • Size

    231KB

  • MD5

    8a86ad656d40180a254fe51aed5985a0

  • SHA1

    2cc50f960f2468fff55cbd85e021f07d4f881272

  • SHA256

    8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377

  • SHA512

    bde50346a08aa1d32a04a35570e7f4a7f04198dff9cabc16ab5060bd6516931b8dc2e70b9b836087fb37b58a6571603067770cff5a003ef8b58bf5756cf6d124

  • SSDEEP

    6144:k9nWJpzDaG4SMQjib5YKQE//jAn8Q3zoWJpWeJDRJarb:GWJpSGgQjdKQO/jAn8Q3zoWJpiv

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 1 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377N.exe
    "C:\Users\Admin\AppData\Local\Temp\8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377N.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:3124
    • C:\Users\Admin\AppData\Local\Temp\3582-490\8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377N.exe"
      2⤵
      • Executes dropped EXE
      PID:4340

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\8d76b38e19f8a4032164620bad76417c90b434eeeec3e341158acd4e9b9b0377N.exe

    Filesize

    190KB

    MD5

    80f2c40c780654a798639b8803ce458b

    SHA1

    96ad88ec717195e7d721cea06579ad785fe4a248

    SHA256

    7a56c988d377d75e778f1dcc0c72bbed7c07bfc6bce8471dfb18d2e1b9c35707

    SHA512

    71220167fd237cdc650168f3316b6c6ab5c0814428ba0cd2d41cf4dc61fd2526e6d1ebdaff05c91ac0bf62739c18614e8d21386d65443d28b09252fc962831b3

  • memory/3124-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3124-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3124-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB