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Analysis

  • max time kernel
    149s
  • 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
    06/06/2024, 21:29

General

  • Target

    2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe

  • Size

    43KB

  • MD5

    765fee9c9480f14a16f4957c0ac0a7c2

  • SHA1

    c3491f2d3733baad27aa7757816e194501775ab0

  • SHA256

    8fa402e824670ae183cab0a5f8e4b7fca1fe18fdbb1970e862412e193a8fcef9

  • SHA512

    b7a2eb0f46cd5b4ce18b2e740f39ed70ef915f748f17473bc3b9e048736c7202bc7bbbf3d8819b4746bdfd5a155bd97781a1767bcad4c9a247c280c6fbdd0117

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n9A:m5nkFNMOtEvwDpjG8hgpY19A

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:552
    • 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:1572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    79a7023236619cebac187511144b99f7

    SHA1

    c6b87f9e101f3f8191325669c27771fe2fe7a024

    SHA256

    c283daa9debf37fd9c8bacbef521d6ed793232dfc868c69606a3ea0f02ded8d1

    SHA512

    8bdc7c46d1e0958aeb2d0f344179adf053a89fa7bf80e8ca63965e69bdddc06dd96067daddaaec2b5bb05e27dc132e89937c72360d139858b0657c5d6d1869a5

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/552-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/552-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/552-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/552-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/552-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1572-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/1572-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1572-50-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB