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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 07:22

General

  • Target

    2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe

  • Size

    41KB

  • MD5

    1a1337e42d86f96df1a425d5c7cca4e1

  • SHA1

    d6e9c4ce9668806c2a8162bc2490759623a91142

  • SHA256

    1e4e432b368979ed98ea64e6c49c593b6a226e6f9b9feec8506219318ac51e11

  • SHA512

    1eba6bc0efae5ba51347bed8c593b7c3457b132111fc86058563d160752b0734b6d540c46d47f82bd1e8036fb0f15ca2daa0a7ef9da4db75ca8902c09e046ebb

  • SSDEEP

    768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAn7g:bCDOw9aMDooc+vA7g

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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\2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_1a1337e42d86f96df1a425d5c7cca4e1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:2356

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    a9ce275c7612a7504d2e7bbd2cc5f36c

    SHA1

    047b7a94ead58f91ca6c159c44f02a863925f452

    SHA256

    52f0519747fde9aecb9a06254b5d62912548ff32df617d6954024b34ec74b059

    SHA512

    08d333568c7a64df9f9bc49e9fdb0138ad622a281996a8490cb5ceb78829b13d2f11318cbb057c8e9b32633fef81fe29a110f6f157c7fb61c913c20a9bdf0955

  • memory/1048-0-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/1048-1-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/1048-6-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1048-9-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/1048-17-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/2356-19-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/2356-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

    Filesize

    24KB

  • memory/2356-26-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB