Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 03:54

General

  • Target

    2024-04-05_89cf91491d305781555592d4f68228a8_cryptolocker.exe

  • Size

    50KB

  • MD5

    89cf91491d305781555592d4f68228a8

  • SHA1

    cfcba9f8b58dab0f12df116f547634b29353a55f

  • SHA256

    c50ea0625f9356f49d17ef48b01a14828b1630233267b8de0d1e3e8c21608e45

  • SHA512

    5acc4b1210bb74c614f23f409894ad5af1785a30a2776f4144a0f57de728b0861c4681d8601fcbadaab8d357ba4b912b9d6b4a89b50d528f43d662af703edd7b

  • SSDEEP

    768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRa9:79mqyNhQMOtEvwDpjBxe8TpXRu

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-05_89cf91491d305781555592d4f68228a8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_89cf91491d305781555592d4f68228a8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3408

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\asih.exe

    Filesize

    51KB

    MD5

    5dbe627cd815592e69b487634a61daf4

    SHA1

    ff5de99a5f8b0301540a3db2d74aab0094fd0861

    SHA256

    f8921e6bc1aedcb10e75410a89718181468c6b08ffcb7fe7cab5a9d0c868ff4c

    SHA512

    8d81ca60426842e530792e266daf10ba6d42c5a7d118b79db87a8d847fcff5cc9b27bd4555b582311d1ce72a7bdf1bf58a7ac29b5fe479677bb4cb8ddacb9fde

  • memory/3408-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3408-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4460-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4460-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4460-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4460-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4460-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB