Analysis

  • max time kernel
    42s
  • max time network
    40s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 19:34

General

  • Target

    275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe

  • Size

    242KB

  • MD5

    e543579498fe9bdbd389d43d7dd2356f

  • SHA1

    d7e5bcf09a2d19eaaecac1afa969515f10d587d3

  • SHA256

    275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa

  • SHA512

    e78c23fffb691252d89e69ece2f7ef04cd064ec22440370bed24d435bc5d192403dd228ce50807b2def90a0945b22129610ef838121077d5ba2f37ba250e44d1

  • SSDEEP

    3072:sr85CGVfh0eYSlkiKJck+HCwRpfblkrxf/sybuN5kGFcKqz1ZzeqI:k9GVfhjYSlgcBlUf/bb45rN

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 Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe
    "C:\Users\Admin\AppData\Local\Temp\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.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:3808
    • C:\Users\Admin\AppData\Local\Temp\3582-490\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of AdjustPrivilegeToken
      PID:232

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\275cf3f23703425ca6b84b7027032776c18f1529c6190e5f646d44aa3b6859fa.exe

    Filesize

    202KB

    MD5

    431cd1334dd929f1c30d8132cad6d19b

    SHA1

    b573e965a4ad180fe691027011e03550ad3072cc

    SHA256

    4d1ae220c9cf6d9bd8d1c94518b630ef04170c597c69a6fed6bf9bbdf70f957f

    SHA512

    8a11d721dbdf5abc09e29e94100dc837bc3f489de6a8aab292e5d080092e357c57ab2e671b08b1f39b77f6fa7cecb2a591250316ca928ef300584fff344ba99e

  • memory/3808-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3808-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3808-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3808-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3808-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB