Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 21:36

General

  • Target

    2024-06-06_cda8a85a2e9271f6e36b0105f9e81c45_cryptolocker.exe

  • Size

    82KB

  • MD5

    cda8a85a2e9271f6e36b0105f9e81c45

  • SHA1

    d28aff7e953da0b1e5d23ce66f24c4da29fad715

  • SHA256

    27da47535ed752826075a7164ee125af148c7c8450edc29ee7ade52592a4a6f2

  • SHA512

    e6b854bf893d4f9c2d0774982c9ef9f48627d969412005f70a1ee2e42d4454eb6bbb1bb0e9c0dc0b92b2d1c41bb02cb35acf98f2feb2a7c6a0a08aced1c96d5c

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMr3Y:TCjsIOtEvwDpj5HE/OUHnSMe

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-06-06_cda8a85a2e9271f6e36b0105f9e81c45_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_cda8a85a2e9271f6e36b0105f9e81c45_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:60
    • 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:656

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          82KB

          MD5

          afea4ab42f0ddaa662b383c3a3af209b

          SHA1

          0598e21c2eb73cf8e6a6120a90d90f6f4456e81f

          SHA256

          df57eaa20d830bab09d10fc7999103bed7593a98c08015632da1630762350bc4

          SHA512

          949f2fb8c652234201cced585bca39714776b233cca1e84db0f066f56c2415c0fd70696712c831ba04716676be31ce19a42b80b21518777318094f052e9ec2c4

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/60-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/60-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/60-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/60-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/60-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/656-17-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/656-20-0x00000000007B0000-0x00000000007B6000-memory.dmp

          Filesize

          24KB

        • memory/656-22-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/656-49-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB