Analysis

  • max time kernel
    94s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2024 00:05

General

  • Target

    8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe

  • Size

    453KB

  • MD5

    77146c89da4e92b21c8507a07c5553e2

  • SHA1

    3bbd4a6732a73d81072246d45fecb6f9e54b0c22

  • SHA256

    8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe

  • SHA512

    5e275166793bc7a2d4ff1e909b1201eccfe4b39671f25f4a98b04790bc55ced6e17fcdf165b45ccf1c7c44d7a3069a6472ebdada6205baa5ad61434e4314fde6

  • SSDEEP

    3072:sr85Crhs8zcZFaFvsaHQX7yJOK8Deft/wKIfsW0pE+2pr9gos5Clr9gow5Clr9g3:k9re8EINHQX7yJOKUPfsWR+2FFJxJtk

Malware Config

Signatures

  • Detect Neshta payload 5 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 System32 directory 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).

  • Program crash 1 IoCs
  • 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe
    "C:\Users\Admin\AppData\Local\Temp\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.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:4476
    • C:\Users\Admin\AppData\Local\Temp\3582-490\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3360
      • C:\Windows\SysWOW64\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe
        L<>2<>
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4136
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3360 -s 436
        3⤵
        • Program crash
        PID:3176
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3360 -ip 3360
    1⤵
      PID:3584

    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\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe

      Filesize

      412KB

      MD5

      07d8ea5c1bcebed33c810cc508d7f744

      SHA1

      b8aa34c4a5c7945561ab1264a0d801ce17617c58

      SHA256

      7546cffe56fef76d66398a4067d0a6dd3079a239e7e23b8762ed7dab35bafab5

      SHA512

      523277eb0b15d652aec5a689240546c6b31f4cc23c8a170b160f7d09d9e03048762582b6c7e7779dd988281ef8cb7a35536784a66f7f4a431a35aea7858cb6d6

    • C:\Windows\SysWOW64\8483de42c86a01ee793b5054d52095824aab174f70d3ad96b02efb6101bf86fe.exe

      Filesize

      13KB

      MD5

      e20d727ea23a3a76b494966d38b49e7a

      SHA1

      bd21604f050fb7f3f28ecc592ee28afc2034abd5

      SHA256

      3e9cc3dc15a62ebb7fdc46fe78761296eec1375f442b767fcf8fd32645a317ae

      SHA512

      6fe0d37efff9dcd6e3d383143a69409798c100eb86844df08ce38c8f93d2840e0ee9a7f96b8ad0264f17e0fc5e5769c5861b0f8c5f51314e50ff7ea9973b4133

    • memory/3360-8-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/3360-17-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/4136-15-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/4476-101-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4476-102-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4476-104-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB