Analysis

  • max time kernel
    94s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 01:32

General

  • Target

    a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58N.exe

  • Size

    3.0MB

  • MD5

    6c46c707246851443029ac8f8f8b7420

  • SHA1

    fd37899d8cff4b0dbb50ddc5e4d4aadad6feda2a

  • SHA256

    a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58

  • SHA512

    3e025eb96d3f1f7cc282816a336e12e51b797263585db23ee089eabd889090df41c953b5ac86d4e7f9c70999169becee8f97b983ffaacfa922fb2e3e20f942ae

  • SSDEEP

    49152:HcHhHAR1gGMFbrNrybwSay8+BLKuhc5a2wxbK+E0RJg6M9GOPqWUovCq0L:3fScNDc5a2wZVKGwL7vf0L

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 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\a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58N.exe
    "C:\Users\Admin\AppData\Local\Temp\a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58N.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:3224
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58N.exe"
      2⤵
      • Executes dropped EXE
      PID:1968

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

    568424d95b90ad4bebfd89e57c086fff

    SHA1

    c9d9bc1ac626ebdfa20fd9d75203242edff26e09

    SHA256

    c6619e71a161e7d30201c8b7f66075ce8cada6b7219b56e5b9fd988a38b2bc4d

    SHA512

    4d40f170030efae3b1f7e85b926462dc3fd86688ce757e843fcec52c720489f160503eb446a777d494403a0e3607f5ef9c7b6a66c6d2e6ced2b4ba10138c151b

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a9b6b66f8dee0bb9a341444993fa9c37a681b6037d765aa69270ef61e0addb58N.exe

    Filesize

    3.0MB

    MD5

    6317b07d7ee7ea48b0a1f62b1680d9fd

    SHA1

    75d8977571ee3ec39916c473a7b4eb9bacfd1c0d

    SHA256

    a4ee797aa4da4663f5ce0f24f351a32428a6e9e0bfe1e72511bd04572f86eea7

    SHA512

    fd58c5358c2d891b28f1a0c119955fca7c438a14ceb0bd8dafae56e170e985cdcf266ee351bab692b8dcc92d2e44a58b12f28c5745cb17cea25a5d1688dc4571

  • memory/3224-95-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/3224-96-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/3224-97-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB

  • memory/3224-99-0x0000000000400000-0x0000000000446000-memory.dmp

    Filesize

    280KB