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Analysis

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

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/01/2025, 20:58

General

  • Target

    f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26bN.exe

  • Size

    828KB

  • MD5

    8c8726bf35fcc3a505a6743f0a8700e0

  • SHA1

    f069250c0e1c46c8ba7d1af873cb17c8d9a9e9dc

  • SHA256

    f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26b

  • SHA512

    a2eb25080bcab76cd0c0a89557bf583539c762e9f9d1f4b5f294d6ab27a8c742b0957af159dc2b16c646c15025a271797031e99faf02749b4b5d1d05aca515b6

  • SSDEEP

    24576:dWGd/yNPBlYmhDrFnzSBpQ+DxsCtYYPNGhZFetxmKpzBB/aYyYpuReYFBwBtgOvO:QGkNPBlYmhDrFnzSBpQ+DxsCtYYPNGhN

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 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26bN.exe
    "C:\Users\Admin\AppData\Local\Temp\f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26bN.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:3968
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26bN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26bN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4976
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 816
        3⤵
        • Program crash
        PID:1924
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4976 -ip 4976
    1⤵
      PID:4828

    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\f2c522e2c84de6a5b176d26d0b23dec36f9a9688fcf9feb656e06e80a2dda26bN.exe

      Filesize

      787KB

      MD5

      c4d306da40fb9079dde32749b1f2c30b

      SHA1

      a8400d437080f9dbaf6138819c00e7f67888475f

      SHA256

      5085433e302786c910da9c4fe1616b9674069ef7f781fc2cf34043886ab1d7e4

      SHA512

      7c2af3f77b1130ad05bdf298beae682341c0d17e0a79169cf59221bb18dd05b6e94fa6f72d3794dbc389b771b5f240178c93e573c149d053f4f89b452221bc36

    • memory/3968-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3968-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3968-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4976-12-0x000000007384E000-0x000000007384F000-memory.dmp

      Filesize

      4KB

    • memory/4976-13-0x00000000009C0000-0x0000000000A86000-memory.dmp

      Filesize

      792KB