Analysis

  • max time kernel
    88s
  • max time network
    205s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    24-05-2022 02:33

General

  • Target

    e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.exe

  • Size

    858KB

  • MD5

    ede5cb2a3ce0048b7e1268130c38401b

  • SHA1

    d25ce1a276a66bff3d171c2c8d4adb1c5eac3b2c

  • SHA256

    e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9

  • SHA512

    38384bf53f7957eca018c470341390f79f1e0cac0777e9e523817bce80b865f400698af97a2bf31357302d7cfcaff7ddbb69d68b084bd8923d64298e9d6f234c

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\e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.exe
    "C:\Users\Admin\AppData\Local\Temp\e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.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:3796
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.exe"
      2⤵
      • Executes dropped EXE
      PID:3736
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 3736 -s 1044
        3⤵
        • Program crash
        PID:516
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 408 -p 3736 -ip 3736
    1⤵
      PID:5064

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.exe

      Filesize

      817KB

      MD5

      455a7a49838f70412d9d0542c9bf874b

      SHA1

      2625d1e2525fd4e24e4e0931cd5a400f4542414a

      SHA256

      3ee44bc6d231820d5b98111f2aeb27fc705f93fddae052a9b688fb1592ac301e

      SHA512

      45713176a501ce1b4ba141c515196aa02f72685033d7ddcdddbc87ef4dd05082bca7f945cfb514430d4179dfbb6db28f21d8864c5cd9317b4df35f70d981ab4b

    • C:\Users\Admin\AppData\Local\Temp\3582-490\e4d4d0c0f149471aadf4cb1a09a270b78dadd0ba673dbe3a535562c6d69e96f9.exe

      Filesize

      817KB

      MD5

      455a7a49838f70412d9d0542c9bf874b

      SHA1

      2625d1e2525fd4e24e4e0931cd5a400f4542414a

      SHA256

      3ee44bc6d231820d5b98111f2aeb27fc705f93fddae052a9b688fb1592ac301e

      SHA512

      45713176a501ce1b4ba141c515196aa02f72685033d7ddcdddbc87ef4dd05082bca7f945cfb514430d4179dfbb6db28f21d8864c5cd9317b4df35f70d981ab4b

    • memory/3736-130-0x0000000000000000-mapping.dmp

    • memory/3736-133-0x0000020005D70000-0x0000020005E44000-memory.dmp

      Filesize

      848KB

    • memory/3736-134-0x00007FF91CD50000-0x00007FF91D811000-memory.dmp

      Filesize

      10.8MB