Analysis

  • max time kernel
    149s
  • max time network
    153s
  • 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 02:15

General

  • Target

    a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350.exe

  • Size

    120KB

  • MD5

    af89c624870700c209719df4303a5b1b

  • SHA1

    1ad38b4e9a2a2a5008f883730bcfd4bcfa2d761f

  • SHA256

    a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350

  • SHA512

    7f7849bae4c3966a188f2550f64ba0e53df6062062c835dabf63977f04576715f52693ecd2c8bdbf4ec144326972bd98b635c10f86434a5aa08f3cf4b1662053

  • SSDEEP

    1536:JxqjQ+P04wsmJC8Cn5kMbvG0cfP2BQ+P04wsmJC:sr85Cuz2Br85C

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\a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350.exe
    "C:\Users\Admin\AppData\Local\Temp\a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350.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:3184
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3976
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3976 -s 408
        3⤵
        • Program crash
        PID:5044
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3976 -ip 3976
    1⤵
      PID:3476

    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\a2308f8e1cd85f04a7ad9c62ac90523e2cd1fe223c9adcecda0412cf38330350.exe

      Filesize

      80KB

      MD5

      e79ed7c6a2ecd6cc028ab31b220f8119

      SHA1

      5a5cc0166f00308af5ba4d2af51de00100ec1692

      SHA256

      605d7f2fc1e763b52b9c50d430339a3faf655869a4e568bfdfe3255387a26467

      SHA512

      14eb516a714c748dc4fe3e82c03f5ba3dcdbc21f61c0e91e96dea3ae2206def1549aac8504ae9e1b05bdf294d68ca4ccd1d25e871e23d07023b09649116b0921

    • memory/3184-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3184-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3184-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3184-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB