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Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/11/2024, 09:54

General

  • Target

    e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedceN.exe

  • Size

    146KB

  • MD5

    5916a954a6ed99542e760eff3a8cc240

  • SHA1

    288db50dd4b322e4a2effabb05d9313321b6cea2

  • SHA256

    e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedce

  • SHA512

    b6abf7ffbfdadddfe74842c2ee67d5b95612b358dab8272e9096b858fc3e6707e16f808278b2d1ae81a18609c6bbda41c4efacb54419e020380337ea8a66ac2e

  • SSDEEP

    3072:sr85CkkbAYn2GgYlBYN2fHYTo+U7t8wDSRUTT:k9xbAMpgY3gTO8DRUTT

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\e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedceN.exe
    "C:\Users\Admin\AppData\Local\Temp\e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedceN.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:1276
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedceN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedceN.exe"
      2⤵
      • Executes dropped EXE
      PID:1860

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\e131bb2ac72a43f15e4ee4fab68465e2ee8b53dd826b980d87910af3a63cedceN.exe

    Filesize

    105KB

    MD5

    892f8268435a99ff6221fb7b21623562

    SHA1

    f0ac0c2ea0283e522e63a4ff065712f37cf773be

    SHA256

    ef3988f057575146bb8f21635629b9e49c9e359831f6e5816aa253c06b1ddef6

    SHA512

    ce5be9e64970dbdb93ea00a8d0807b9b38f902f42f4b2c1384f7145a21392c7006fe9f2ffb3860ae7fdefa962dd1ec7f834c321402192028356f7a93f30b0c4c

  • memory/1276-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1276-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1276-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB