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
    26-10-2024 16:50

General

  • Target

    ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614aN.exe

  • Size

    7.1MB

  • MD5

    f9df774c6c13f32eb90408de4214d660

  • SHA1

    70cdc6a7460c74fd041cd196dfde536754de285b

  • SHA256

    ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614a

  • SHA512

    8aa0697050e4e73809639a08882fd96239938dec489c1a61828a5e6fa0c0bcd7a639858a0a27eb1b55757e02ef9b33ba931de0b25270d745052b428be5d0a287

  • SSDEEP

    49152:5Hx8XJ/bxVtfzeLitO414j9vnAQsD2NmXC/eGSG3T8HQI2OIXQxxPOv:5slulJXsDCbgQIhP8

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\ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614aN.exe
    "C:\Users\Admin\AppData\Local\Temp\ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614aN.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:4040
    • C:\Users\Admin\AppData\Local\Temp\3582-490\ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614aN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614aN.exe"
      2⤵
      • Executes dropped EXE
      PID:1140

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\ef38b6e63352e0cb82dc3243acfea7f7744a7f9c02f977bc9b0e6f6b4449614aN.exe

    Filesize

    7.1MB

    MD5

    5256370d78e5dae7e85bf4d4ccbdee95

    SHA1

    052d00c777430826155bfac7823146de2010c172

    SHA256

    102af03cf0afe43c697179d329587ff34f3acbec7ff3d5931f4de7ea96e3b2b0

    SHA512

    6ea2e7ed9456810cd1f91432439f9d370e7190a1f8e1452069c488e56845950dfbfc4bf105f504e20b6ba7694f3a0ca2e70a1f63410a2d99bfe922129ecfb340

  • memory/4040-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4040-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4040-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB