Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2024 17:53

General

  • Target

    2024-02-14_ca15daf1a346375876286dba94f4345f_cryptolocker.exe

  • Size

    126KB

  • MD5

    ca15daf1a346375876286dba94f4345f

  • SHA1

    5be5737255daa822f1b65ef6e602e83a02dd8ad2

  • SHA256

    44c163734be3188d548384fa2e8f0d01f52d5889258654f034ca9425a8d1375d

  • SHA512

    79330450a6bd77207dfa89bee97b4103c906e88f6069339cb5805a128a94bbcd5127a873e5c9d71dc01f1436d451c70287da88544700a0bb0fe7ca40cea5c129

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//irs:vCjsIOtEvwDpj5H9YvQd2RJ

Score
9/10

Malware Config

Signatures

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_ca15daf1a346375876286dba94f4345f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_ca15daf1a346375876286dba94f4345f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2852
    • 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:1244

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    126KB

    MD5

    18d66b7e8c9109d9aaef4aeac20ed736

    SHA1

    8a390c2b5ebe3850ab08fdd5337575f07732baf2

    SHA256

    6b6c64152a8769d6eaf20611c9e5d263cc19617edd5786f078aa7703eaa1f593

    SHA512

    d695c8ead5bcf91df8c52fde7e8bdcc191d02bbae1da70b8aefd5228f5b7f58ea348d555da892dd8361be97d7a98e4b5ca2f0911184fada35a82bbc8525903f3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1244-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/1244-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2852-0-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/2852-1-0x0000000002190000-0x0000000002196000-memory.dmp

    Filesize

    24KB

  • memory/2852-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB