Analysis

  • max time kernel
    188s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220718-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-07-2022 18:26

General

  • Target

    4e30517b04fb37262dfbb06223c1a74be57ce6643ac09f1e214568b242974338.exe

  • Size

    652KB

  • MD5

    8e570cbdb3289fb85221de88180c77dc

  • SHA1

    f78884d8748d4de6af7300527ecb37d32c629559

  • SHA256

    4e30517b04fb37262dfbb06223c1a74be57ce6643ac09f1e214568b242974338

  • SHA512

    677156f870dea42174d1a36c05380dbf5a6910c96435bc7aaad9649c6d13d974f0cba0ee69c4ab5504dcf5ac53be5bd1101d29a9e22dfa7de55ab233113c3332

Malware Config

Signatures

  • Detect Neshta payload 5 IoCs
  • 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.

  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4e30517b04fb37262dfbb06223c1a74be57ce6643ac09f1e214568b242974338.exe
    "C:\Users\Admin\AppData\Local\Temp\4e30517b04fb37262dfbb06223c1a74be57ce6643ac09f1e214568b242974338.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3628
    • C:\Users\Admin\AppData\Local\Temp\4e30517b04fb37262dfbb06223c1a74be57ce6643ac09f1e214568b242974338.exe
      "C:\Users\Admin\AppData\Local\Temp\4e30517b04fb37262dfbb06223c1a74be57ce6643ac09f1e214568b242974338.exe"
      2⤵
      • Modifies system executable filetype association
      • Checks computer location settings
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      PID:2740

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2740-133-0x0000000000000000-mapping.dmp

  • memory/2740-135-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2740-136-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2740-137-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2740-138-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3628-132-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB

  • memory/3628-134-0x0000000002260000-0x0000000002266000-memory.dmp

    Filesize

    24KB