Analysis

  • max time kernel
    96s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/10/2024, 08:44

General

  • Target

    5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3N.exe

  • Size

    149KB

  • MD5

    62c7a288293cd9b417f8ae3a16c83c90

  • SHA1

    335adae0f8ab03f03e89793d959813e20057b37e

  • SHA256

    5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3

  • SHA512

    138af11ed6d4a13a1950b94f1af162f2dcc578ddc7ce3e6e2b51506ad6bf5a71abcf79922ea047ee112744b6079c14511a5e419a30031d4857f5f5b1fbb07b8f

  • SSDEEP

    1536:JxqjQ+P04wsmJCeI1700UEuWNFQr3bVBXLYXzXwl4ePxVBXLYXzXwl4ePpA7DttM:sr85CeI1uWq3BB8DApLB8DApxA7ef

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.

  • 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3N.exe
    "C:\Users\Admin\AppData\Local\Temp\5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3N.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:440
    • C:\Users\Admin\AppData\Local\Temp\3582-490\5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3N.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3276
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 796
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:3256

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\5b83f4f63d3a293f6daba976587356c7f7323cabe4403caad3b47ed6434b55e3N.exe

    Filesize

    108KB

    MD5

    e058531b27d1322faf041e5368c24a58

    SHA1

    bb1a91b9f8f6a625f09a6de71170a493500fad70

    SHA256

    8e184cb4b4578a92134ca16e59948a2815b5103c6b6702574056eaa4a65356e7

    SHA512

    9bf7151e75690214f9253cf03f3fb48fbba767dc962cac6ae57195d0c31682c205890d9558d8f345085dbc94c5d0f1f56d4ba1674cfa82ae69e0837e930d8fbf

  • memory/440-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/440-109-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/440-111-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3276-12-0x00007FFEE7005000-0x00007FFEE7006000-memory.dmp

    Filesize

    4KB

  • memory/3276-13-0x000000001C460000-0x000000001C92E000-memory.dmp

    Filesize

    4.8MB

  • memory/3276-15-0x000000001BEC0000-0x000000001BF5C000-memory.dmp

    Filesize

    624KB

  • memory/3276-14-0x00007FFEE6D50000-0x00007FFEE76F1000-memory.dmp

    Filesize

    9.6MB

  • memory/3276-16-0x000000001CAE0000-0x000000001CB86000-memory.dmp

    Filesize

    664KB

  • memory/3276-17-0x00007FFEE6D50000-0x00007FFEE76F1000-memory.dmp

    Filesize

    9.6MB

  • memory/3276-38-0x00007FFEE6D50000-0x00007FFEE76F1000-memory.dmp

    Filesize

    9.6MB