Analysis

  • max time kernel
    104s
  • max time network
    107s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-11-2024 03:23

General

  • Target

    a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe

  • Size

    616KB

  • MD5

    a83e6809836d453aa4be9a7fec5ef750

  • SHA1

    820d02e62f20eea1fcb8d02c1c62c291da23f3c5

  • SHA256

    a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5c

  • SHA512

    d399711069adb2e41a67dffdf7970e3bf8d1a8e98442497a054c007af16361842dc18ade1539e952e40f6cab0b20f9555e8ffdd74e0a2abf41fb7f9f4b5634f7

  • SSDEEP

    12288:rAVnIi3ROwIRuHnOyP0DILbb+zLncNmEqAQOH2mOvbuio1DC:roIihOwIAHnOyP0DILbbGLcNmEqKHliX

Malware Config

Signatures

  • Detect Neshta payload 6 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\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe
    "C:\Users\Admin\AppData\Local\Temp\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.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:4468
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3484

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\a1c70736a44f98fd3c1216dcfca8645dee56aee6e1c46cd8fdcc3b1e01cdba5cN.exe

    Filesize

    575KB

    MD5

    ed2bf66439a4eae91b276587599e3c16

    SHA1

    cdfc99167f5e8521c93b69559856296b82332357

    SHA256

    ca1cec40bb1dec35dca91b7aa7f11f316f25591f75edd7b5860b9d1efaf5c321

    SHA512

    241775b3a79254b1965a2c9b5abc42b201313fa85e980c9e1d616dad6629b05c93ef8c996df3121cfd032e414aab8be8fbc86e0ba2d5c4c9267fc934c5fee656

  • memory/4468-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4468-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4468-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4468-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4468-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB