Analysis

  • max time kernel
    118s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2022 06:59

General

  • Target

    7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe

  • Size

    731KB

  • MD5

    91850432e54b74d679f38ea245efb989

  • SHA1

    84f0ec6e081d98e4c9666a7dc995234ac088a611

  • SHA256

    7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749

  • SHA512

    4e395731341b5963da868c44b4496bc2a2dd158de5802a427218eb757f5a799bb1f6c03adf28d5ce4dedfbbbbf825b421ce432b789faa8eb28b963f1d990490b

  • SSDEEP

    12288:qAugAYhxHq9avUBHxf+gYSKAmMPzuDJXM23zzU:BAYzHq8eFYSKAmMPz+JXd3U

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 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). Likely ransomware behaviour.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe
    "C:\Users\Admin\AppData\Local\Temp\7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3012
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3012 -s 252
      2⤵
      • Program crash
      PID:1696
    • C:\Users\Admin\AppData\Local\Temp\3582-490\7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe"
      2⤵
      • Executes dropped EXE
      PID:4840
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3012 -ip 3012
    1⤵
      PID:4980

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe

      Filesize

      690KB

      MD5

      b0476efdf5aba0f408a8fd705a704501

      SHA1

      7e7def2f8c145c893cd5659979ca072570ccb177

      SHA256

      028d25ac6536f2fea9e6d45c4271121258bb82e31f0d1b272b63eccf977050f2

      SHA512

      f94d9e78e92de669c2884ec92893f58e0940eccacee43ac5204197fb2067364fcf0e1c6ca8703b4fcae51d6cc426935cf067b6a3f916d4bf1e36575808a475e4

    • C:\Users\Admin\AppData\Local\Temp\3582-490\7dfa7d1d59b3f6cc0bfc99d7d11abd261e6281171a595e085259d9bbac6d4749.exe

      Filesize

      690KB

      MD5

      b0476efdf5aba0f408a8fd705a704501

      SHA1

      7e7def2f8c145c893cd5659979ca072570ccb177

      SHA256

      028d25ac6536f2fea9e6d45c4271121258bb82e31f0d1b272b63eccf977050f2

      SHA512

      f94d9e78e92de669c2884ec92893f58e0940eccacee43ac5204197fb2067364fcf0e1c6ca8703b4fcae51d6cc426935cf067b6a3f916d4bf1e36575808a475e4

    • memory/4840-132-0x0000000000000000-mapping.dmp