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Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 12:15

General

  • Target

    2024-01-06_b6771248b3a61a90000c9b1a10f72fd1_cryptolocker.exe

  • Size

    58KB

  • MD5

    b6771248b3a61a90000c9b1a10f72fd1

  • SHA1

    9ee60fa164103bd8835ad70249499807a23393ec

  • SHA256

    88413e5d1f3de8b789b26f1fd9c78c1fd980eaf0e35e860a246f056353e21e53

  • SHA512

    bde5b99473bfef11d97f115bc0b462f5a0b85706c1af82c3841210b6070dad171694aceb02425c2a3611c99cf394f17c3eabe347698f110dc27af08dc03ea7c5

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTr:TCjsIOtEvwDpj5HE/OUHnSMY

Score
7/10

Malware Config

Signatures

  • 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-06_b6771248b3a61a90000c9b1a10f72fd1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_b6771248b3a61a90000c9b1a10f72fd1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4976
    • 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:2472

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    58KB

    MD5

    8cf3b59883e367f42c04e72e78890c75

    SHA1

    ea94b45e1c6eb81f65443140c01f4ff79aa0ea3e

    SHA256

    6b423141f84358f230a610cd394422d249729163eabe9e643fb95e21d475d335

    SHA512

    4cc0ba5750ce5168e0b2f61ebc0d170d8716bfebb4444017ec9273b927d05eb9581b5b1d9721999724198ab08d10e1804e1688174a5b17ca72f52305a14f5ff3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2472-25-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/2472-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2472-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4976-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4976-3-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/4976-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4976-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4976-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB