Analysis

  • max time kernel
    135s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 23:37

General

  • Target

    5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167.exe

  • Size

    1.6MB

  • MD5

    09df699ac4f7cae73e3de775d14b31d7

  • SHA1

    0dcb3ce460d0908ee6ac4bd766d51bccfc4c37c3

  • SHA256

    5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167

  • SHA512

    80cd679d67df14779b001d97158841ce39d8c86b2bbe632358a188d4cd85559c18deb8f95f660f94c4d6508203e6e535821d0798b24728807c652f965959597a

  • SSDEEP

    12288:Z+1/fqxzUv94+7XCvE/oa2jo0VVUZoTnG3vIpaBuKNB7whzQMY:dxzIYE/oa2jo0VVUZknG3v14ghwha

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 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\5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167.exe
    "C:\Users\Admin\AppData\Local\Temp\5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167.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:2612
    • C:\Users\Admin\AppData\Local\Temp\3582-490\5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5040 -s 408
        3⤵
        • Program crash
        PID:1656
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5040 -ip 5040
    1⤵
      PID:228

    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\5f64a5d44ff9f2c34f2d4ae78354ecbb1462b1b2993f19bd1ee81ee52d9da167.exe

      Filesize

      1.6MB

      MD5

      fe5070cefb0b637eafad356f41adc8c3

      SHA1

      3e9dbdae775e3567dc88a27d79f214100830f09a

      SHA256

      dfc70b3f3163447ea5c196b8b0409bbbf69169a57affa392ddb57e33d0442bef

      SHA512

      9960c3fa21bdf92cb3fa566b18990214bc246a43f8e4ee85020dbefbe83d41912189c330e8e1607a33524f8d33f2fde201afa9bd0565045bfcc664544f174635

    • memory/2612-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2612-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2612-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2612-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB