Analysis

  • max time kernel
    106s
  • max time network
    111s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-10-2024 02:33

General

  • Target

    b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe

  • Size

    1.4MB

  • MD5

    0d32e3c66af8ca083cf5d1b0200ff770

  • SHA1

    d26bc56a0921c88b6bd6eac34899473172b79f3a

  • SHA256

    b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82

  • SHA512

    bc453bfdb9e521109f80b602c50adb8791be71a9496cff28b81453fd1ceb5c0fa1af6a937899a161ed953a87f8c195f362988fbef5acf2968f588b5562f6722f

  • SSDEEP

    24576:8v2XwKvHoBHErvOmnD4TxJeUrtONbcDvX+ZRDSq9yG0+GYCwdD5sguoaDEy4lFYv:PvyiUTxwuoNbxzyG0QCKD5daDEyUk

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 2 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 3 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe
    "C:\Users\Admin\AppData\Local\Temp\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.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:1308
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4940
      • C:\Users\Admin\AppData\Local\Temp\3582-490\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe" -z2
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4148

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\b1f830036add9b0d915cd54f916cd444c6816f69bbf202db14da646fa72a5b82N.exe

    Filesize

    1.3MB

    MD5

    46559af116df2b4c0878fe2bc1ac5c74

    SHA1

    025a6391bdc39eda9e1efe572fdea83663ee8431

    SHA256

    5234bb1bf805030c5a93d900a4305dccaf63c1dd15ba5ac067f152e6416ac296

    SHA512

    ef33645ea674a33fdc3cf65302c78658463ad20b10472077964e0988942e6a4b6ff8f59ff432e91c9d3539d68dfb4abb723af7dc77da92d570356a791907bfaf

  • memory/1308-102-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1308-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1308-105-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4148-18-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/4940-11-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB

  • memory/4940-14-0x0000000000400000-0x00000000005A4000-memory.dmp

    Filesize

    1.6MB