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Analysis

  • max time kernel
    140s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/01/2024, 06:47

General

  • Target

    2024-01-08_c7b1282b0e0b88a730a0017f40fc7e11_cryptolocker.exe

  • Size

    90KB

  • MD5

    c7b1282b0e0b88a730a0017f40fc7e11

  • SHA1

    17158a64c95f0011cee2e1f75e1bcfdaa2364da1

  • SHA256

    625eac600c4ff3b58db90db8fd77debd398421f9880ee13664f38dad3b6a413f

  • SHA512

    b35a768d6b2966ea5cf2242bce1fd822792f9466b486e1fae2a2f53e812daff052d1086f7d1dcba9b9dc074d0a077a5df78d29d83b29a005ad8683a79f530426

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/V:zCsanOtEvwDpjBV

Score
7/10
upx

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 6 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-08_c7b1282b0e0b88a730a0017f40fc7e11_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-08_c7b1282b0e0b88a730a0017f40fc7e11_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:5040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    cfc2191c6e2aeda70ae519e575fde4e3

    SHA1

    29fd81e22c8c22b67dc4c43b613213689c9500c1

    SHA256

    c86f213fcae2fef0135296b31c59d38027e01909ccbc7b951314e7cacd037159

    SHA512

    f8ffc496d1ce20cfe0b395c3dd4a8e7bccc71f08299ddd5e6f58cf3cea5bd9ff6986331c424f504b89b213130310298213e19b65067b5593f9aa79d21735a983

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

    Filesize

    91KB

    MD5

    78c975ccd86328bbd155d5a1eabc9822

    SHA1

    7addd91acbe0e3fdf0d601ef87c374f261d6dc78

    SHA256

    970d10cbedb940b36ca87b66e9efbf902f2a0a247efc4875c839abd893dab1dc

    SHA512

    e8dc084d7685d37a87050dbccc3b0297aceb99efcc8f3f3bd1e2ca07abfe1729afe1b779262856852599936a0acd8a9792b44aa93019663315764dd5873aa242

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

    Filesize

    10KB

    MD5

    a3f55add5c002ba2680431750a8aff38

    SHA1

    f88306e58fb303b279c95c342d1978e1c7bf7b62

    SHA256

    2f2177c02668040a6a14433f240ff84cd7bda7ed4b4a3227ab000034a787f00a

    SHA512

    a5a5ec8f8888e08a76e874faeb5bd068d74bf5aa63c25309eb07f159687ba8defddb6be39c754a2ff0002ab2d55db111c04faec4a6b0daf742fe732de7dc117a

  • memory/2092-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2092-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2092-3-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/2092-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2092-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5040-24-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/5040-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/5040-50-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB