Analysis

  • max time kernel
    133s
  • max time network
    177s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 22:55

General

  • Target

    2024-01-18_7086304e6325702b8c2a5878b7f0bb4b_cryptolocker.exe

  • Size

    59KB

  • MD5

    7086304e6325702b8c2a5878b7f0bb4b

  • SHA1

    1a514d05d7f430348c0f5213f683be19d271bc84

  • SHA256

    857b7620aac415b4ca6a38bee06c609a813a92ff1c97f1631e5fdbd96ef6a601

  • SHA512

    7484baf9ed83179da2faaa112921c5c826af7cacdceadeee6cf455d5763879114f11397686330068d6c8b4ba5d278a71c9afc10be9f672497b2d60ef0b267eb9

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPv1:TCjsIOtEvwDpj5HE/OUHnSMYa

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\2024-01-18_7086304e6325702b8c2a5878b7f0bb4b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_7086304e6325702b8c2a5878b7f0bb4b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:864
    • 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:2004

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          54KB

          MD5

          0dd080e8b0cd3dfb49fafc3c03abb826

          SHA1

          9fe86955b8feafda6a977c1f5a6474cc86c10dfc

          SHA256

          6fb5ce2a09b74a518555470de97289f98af594f645e24d287e3caa1516a404ac

          SHA512

          832fa9c2d77e617b0185156403c582ff000303a7a355da9ddb2eebfdf2892c651f515f2e045ce6d1ef857bf4287e3f31354e92c090f7d30cf35510fc376bb88c

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

          Filesize

          60KB

          MD5

          99d8ca40db6fecdd960e5ae1c92a4dd2

          SHA1

          eeb4323e538b237dd495ec83804e8deb7a17920b

          SHA256

          1b50cde180e5f1311f6eadd5f28e61ea895e92b95c2b7315352055ea4a016cad

          SHA512

          0cfd963c016074dc4c7bf9b596c45bd220c4140c9dcf50e8b9db2164824e82eb2018a69e86e64e4d1c5c991052500471f296d3a2393497900fe4e900cad2d1b3

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/864-0-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/864-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/864-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/864-3-0x0000000000600000-0x0000000000606000-memory.dmp

          Filesize

          24KB

        • memory/864-18-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB

        • memory/2004-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2004-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2004-38-0x0000000000500000-0x000000000050E000-memory.dmp

          Filesize

          56KB