Analysis

  • max time kernel
    140s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-06-2024 08:23

General

  • Target

    2024-06-19_1990b12d690ca0cc794b5b69aff67372_lockbit_neshta.exe

  • Size

    190KB

  • MD5

    1990b12d690ca0cc794b5b69aff67372

  • SHA1

    3c10c41fae489e0d2ac70cd693a0441da10ded54

  • SHA256

    4f46dac7fe7e27e955c968fc3297a1f6d7cc89425a4ee67fbe0642cc0d7cff73

  • SHA512

    84d29bcec13df6cfefbfb75673f51ebcdf54a4f42a0ea658393520c836b99370893ac8a5a4ccd2ceccadd3282faa3c66bd5946f96fe217f93305ba0762b891de

  • SSDEEP

    3072:sr85CU/ZNMIuc1SoiR9MH8wk44ymr1ilJDoiXWoqflac6sZ/mqFIhzj72WIT6FLD:k9UBNFucVicHrk7yPXDoiXXq0KZeqFIp

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Lockbit

    Ransomware family with multiple variants released since late 2019.

  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Rule to detect Lockbit 3.0 ransomware Windows payload 3 IoCs
  • 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 2 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).

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-19_1990b12d690ca0cc794b5b69aff67372_lockbit_neshta.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-19_1990b12d690ca0cc794b5b69aff67372_lockbit_neshta.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3980
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2024-06-19_1990b12d690ca0cc794b5b69aff67372_lockbit_neshta.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2024-06-19_1990b12d690ca0cc794b5b69aff67372_lockbit_neshta.exe"
      2⤵
      • Executes dropped EXE
      PID:1076
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1076 -s 264
        3⤵
        • Program crash
        PID:5008
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1076 -ip 1076
    1⤵
      PID:2120
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4472,i,7869973516895866428,11647313872437892197,262144 --variations-seed-version --mojo-platform-channel-handle=4416 /prefetch:8
      1⤵
        PID:2556

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      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\2024-06-19_1990b12d690ca0cc794b5b69aff67372_lockbit_neshta.exe

        Filesize

        149KB

        MD5

        91f84cb36a9e4ce18480d138d571d522

        SHA1

        c69bb204e844b9f2ed1ace710f2c480ec8f67702

        SHA256

        3c7dd7371210ee48edc51c437be99eab71e2b38230df3910a81eb6fbc1e3df29

        SHA512

        7dd445869379390a0ffccb13e6b09e57283c968cf854571997d9b1e8f9c2157d7623bf57e94a01ed6dbc7427e586286f28d1f4af56aa8fed58841cc1dda6ef93

      • memory/1076-8-0x0000000000400000-0x0000000000429000-memory.dmp

        Filesize

        164KB

      • memory/1076-10-0x0000000000400000-0x0000000000429000-memory.dmp

        Filesize

        164KB

      • memory/3980-119-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/3980-121-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB