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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 02:59

General

  • Target

    2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe

  • Size

    71KB

  • MD5

    daf297a17f079f7137a550dea945ded5

  • SHA1

    c71a403ae80b9c79f0a7610373e1fdcfa5b1fb48

  • SHA256

    ab48e28b3cec4d0afcb40cfc2c4560e2a2835dda2e3ca76f444b646995f4fb66

  • SHA512

    9777542b3e365df4073493a4c60aa4fd415016600244bf63ce44852df50ff9cacc6b77823efbdee1fd33c18202bf3d65622e7f2404d9a887b44c0d013941d2a1

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9r:C4Q2c94OtEvwDpj4H8zO

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_daf297a17f079f7137a550dea945ded5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4768
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:4384

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    bc9a235e4ed710c8e1cfd0cd5de53b1d

    SHA1

    6dfd7775b53789d0f434759f2195ee6af58f9d3d

    SHA256

    4232ac26a158254e244c2c6f3d3b0fc056c975adaeb31b04834940020e723a51

    SHA512

    9f40ec87a2b95068b53f4535e2a6b2e6d3c6c9ec104d024de2cc8ddf163152a0053a91368c0c00ac5de5215eb170629c3de32c8b734761f9aac44158e18b11d4

  • memory/4384-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4384-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4384-26-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/4384-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4768-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4768-1-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/4768-2-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/4768-9-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/4768-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB