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Analysis

  • max time kernel
    128s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/05/2024, 04:51

General

  • Target

    2024-05-08_e30654da9fdc4cf7478690ba251b4b5f_cryptolocker.exe

  • Size

    41KB

  • MD5

    e30654da9fdc4cf7478690ba251b4b5f

  • SHA1

    6dd6c9e2e676324ec6ca5c5c9fa1ceb266345044

  • SHA256

    381d5c46aea88758f1e3cd37dcf58c47aefd1bf7019ff62593119bb0472abee4

  • SHA512

    f56de31d68e10a5bde921f58e5fd4a82ffceffdf8440d9bfce1df20dc751294950b69d687d421db52c373b55c6429ebc6dc322ce6740658f9b8286b0f6b82bf7

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7xi:ZzFbxmLPWQMOtEvwDpjLeJAsKcb7A

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 2 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-08_e30654da9fdc4cf7478690ba251b4b5f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-08_e30654da9fdc4cf7478690ba251b4b5f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4040
    • 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:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    cc1b821cdc70180ca4af843a47385cbc

    SHA1

    3fb1368350d1c77db9d6265a5fd5558c1a8b0d4d

    SHA256

    a7fe019a054fbafe03b59fa0b1625c76ae13cd74712f93a18af1aa5f1860d317

    SHA512

    a2194ff1a80136db3456a8e189ce6e44f894c278eb416e51f6ce161bd5c0de021c7648a3589155c830c9636cf95d928806c5f834ac19f83a582fae3d11d09371

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2904-18-0x0000000000450000-0x0000000000490000-memory.dmp

    Filesize

    256KB

  • memory/2904-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2904-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4040-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4040-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4040-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/4040-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4040-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB