Analysis

  • max time kernel
    50s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    23-05-2022 23:55

General

  • Target

    78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.exe

  • Size

    630KB

  • MD5

    dd0ebd1e425cfa550e044cf7af8a2bd6

  • SHA1

    4f1c6d4f967c4b6b37a2631649c0b3226cf2590e

  • SHA256

    78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c

  • SHA512

    cd4424e2c50bb5a453715828af47ba8e40276f5d9284463ce89b637bbd4caaef91df60e356bf94ece1ffed9107468e9e49118f877cd69e62f538208b590e8d6c

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.

  • Drops file in Program Files directory 14 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.exe
    "C:\Users\Admin\AppData\Local\Temp\78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.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:1644
    • C:\Users\Admin\AppData\Local\Temp\3582-490\78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.exe"
      2⤵
      • Executes dropped EXE
      PID:2960
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2960 -s 800
        3⤵
        • Program crash
        PID:4804
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 420 -p 2960 -ip 2960
    1⤵
      PID:3188

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.exe

      Filesize

      589KB

      MD5

      97f09cdc26d5d74cf7f63e4223809f46

      SHA1

      f5a9455cb15886ea112f520bbdd9fb052d840c2d

      SHA256

      8381d7e7c7f0d1bff3d18fcb6b8dfc63d6a8943887e4bc105c8f225513eed832

      SHA512

      d111c1ae9161a63140a6ca2e378f74a173134a5161f2101c18dc879296a4a532e1b97bc5908d0d59bdf01a0c4d55867c65b6bca75cddaa4782456d2beafe785d

    • C:\Users\Admin\AppData\Local\Temp\3582-490\78df678b2af8f1d4cf0f8ccc8423398cc2bafac6ad8056f3c4072bd59470c61c.exe

      Filesize

      589KB

      MD5

      97f09cdc26d5d74cf7f63e4223809f46

      SHA1

      f5a9455cb15886ea112f520bbdd9fb052d840c2d

      SHA256

      8381d7e7c7f0d1bff3d18fcb6b8dfc63d6a8943887e4bc105c8f225513eed832

      SHA512

      d111c1ae9161a63140a6ca2e378f74a173134a5161f2101c18dc879296a4a532e1b97bc5908d0d59bdf01a0c4d55867c65b6bca75cddaa4782456d2beafe785d

    • memory/2960-130-0x0000000000000000-mapping.dmp

    • memory/2960-133-0x0000000000580000-0x0000000000618000-memory.dmp

      Filesize

      608KB

    • memory/2960-134-0x00007FFECCC70000-0x00007FFECD731000-memory.dmp

      Filesize

      10.8MB