Analysis

  • max time kernel
    84s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2024 20:34

General

  • Target

    b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3cN.exe

  • Size

    4.8MB

  • MD5

    64e7f75656a65ece7ffb6eb81355db30

  • SHA1

    8c27682411532ef3bc12474c7cd3a69b8706634c

  • SHA256

    b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3c

  • SHA512

    9f88d12776c522379563bc78882792e629094035cd81faf0df20cb7fb93357a4b1cbfde63a26ca05e92d211a094ecfa391d097677253e06627a3535bdd827ab8

  • SSDEEP

    98304:MIBdcegPTApJRVaNz6mCuzOEZE/bEloTj5559AQyk2B5lx8LV:MUc57eRcLCc+b9Td5AQyk2B5T8LV

Malware Config

Signatures

  • Detect Neshta payload 3 IoCs
  • Neshta

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

  • Neshta family
  • Checks BIOS information in registry 2 TTPs 1 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 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.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3cN.exe
    "C:\Users\Admin\AppData\Local\Temp\b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3cN.exe"
    1⤵
    • Loads dropped DLL
    • 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:2512
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3cN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3cN.exe"
      2⤵
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Program Files directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

    Filesize

    547KB

    MD5

    cf6c595d3e5e9667667af096762fd9c4

    SHA1

    9bb44da8d7f6457099cb56e4f7d1026963dce7ce

    SHA256

    593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

    SHA512

    ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

  • C:\Users\Admin\AppData\Local\Temp\3582-490\b482c0e2d0d70f4b83c2d7597fcbdd9f48554d9f67197260d9ea868fc1ba9f3cN.exe

    Filesize

    4.8MB

    MD5

    51bc9364ba2f2c8eb2e71e3275592cc5

    SHA1

    b9328031bc4317ea31a16c6069b2c98474b9685f

    SHA256

    5274f203d4cdb2976ee5cac6deeceae92ff0624c4eeb00fbe803b97e12ba2997

    SHA512

    38e8b11a4237226fdfa074f28b01f1baad9e28a43719948c30a1593df0aa513c89d1b494d16321b86fa8419013c165254755863dcdd203ef420c120d95e5129f

  • C:\Users\Admin\AppData\Local\Temp\CabDE9E.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • memory/824-14-0x0000000077420000-0x0000000077422000-memory.dmp

    Filesize

    8KB

  • memory/824-12-0x0000000077420000-0x0000000077422000-memory.dmp

    Filesize

    8KB

  • memory/824-10-0x0000000077420000-0x0000000077422000-memory.dmp

    Filesize

    8KB

  • memory/824-15-0x000000013FCC0000-0x0000000144485000-memory.dmp

    Filesize

    71.8MB

  • memory/2512-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2512-110-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB