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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 00:51

General

  • Target

    2024-05-10_cdcb69318a1db2a9c467f9f19723a7ca_cryptolocker.exe

  • Size

    40KB

  • MD5

    cdcb69318a1db2a9c467f9f19723a7ca

  • SHA1

    47637910518894292cba4068d232f461138e41c8

  • SHA256

    da9306233d0368a86e318011a4b7ab254e707d5daf145f749b95450ad899892c

  • SHA512

    de7483d23d1d9c10ca25ad792f260a19d47ff9d991048d2c92c13f21dcfc5b583cb3648a39416fbef8c7709368532b310654780420efe602d5fcf7367d0d5d3f

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuD+L:ZzFbxmLPWQMOtEvwDpjLeJAsKcq

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\2024-05-10_cdcb69318a1db2a9c467f9f19723a7ca_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_cdcb69318a1db2a9c467f9f19723a7ca_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1316
    • 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:544

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    7fb5fb430baebccc428adc08e597b30f

    SHA1

    123586601254344dbe25af76abfeb602b09d8c2e

    SHA256

    b43fe860a021bfc9d6246ef7aaf1fb129fb88e59fc8b4ab0e9e752b5eba47b7a

    SHA512

    ed1c82f83a657ed079c3fd0b649edcf9372fd5bbd143534d8015b7c7831d88374e6d0c7ff79b7fb8506ae8f9aaaa7bebebf637454ef188345dfa7ea721cd4048

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/544-19-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/544-25-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1316-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1316-1-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1316-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1316-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1316-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB