Analysis

  • max time kernel
    93s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-05-2024 04:55

General

  • Target

    2024-05-12_cf38897c7738a0844cf384013c871e8f_cryptolocker.exe

  • Size

    40KB

  • MD5

    cf38897c7738a0844cf384013c871e8f

  • SHA1

    d76243cbd831903563f420787f6a0c840787291a

  • SHA256

    af4ff9e652c3368212d8ce1d0ed0fb7ee532aa9dddb8e63771d54191f81efe5d

  • SHA512

    d2d9673740fe8ce88b5d07808cefb38bfd6558db0622175048a3f4383edae447f80dab904b77e532cbe6317fad26b55e03e13b867dc0e36b4bd0920c3354ff12

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDbj:ZzFbxmLPWQMOtEvwDpjLeJAsKcbj

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-12_cf38897c7738a0844cf384013c871e8f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_cf38897c7738a0844cf384013c871e8f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4624
    • 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:3664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    a7756b44af1361aa12738c3b79c230ae

    SHA1

    be97698213dec4245ee385c541a2997ba55b02b3

    SHA256

    83be108066e7f3e6f3aaf05e79dbf08e143d8b5b48a9e0c4d0c8638fa1545462

    SHA512

    d5be375d9a7004a81674175aa8ebd2d8d156ccf9e3f30e43fb3b8bf8d2d1ea273544f7cc82c52f3440b9755618fcad0205ccc38ba946d39fd1e3757eb8835803

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3664-19-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/3664-25-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/4624-0-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/4624-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4624-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4624-3-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4624-17-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB