Analysis

  • max time kernel
    137s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 15:45

General

  • Target

    2024-05-21_c7370437e1a8f07e8460d6aca0028163_cryptolocker.exe

  • Size

    39KB

  • MD5

    c7370437e1a8f07e8460d6aca0028163

  • SHA1

    32970bb3d678142edd87d8c4e8bc43cb7d75c96c

  • SHA256

    6094215f3978ad2f20b20fc27781b87921efe6710c2a33834c43108dd2d29685

  • SHA512

    2c779e16b63de6e63c1829e53c5b5d516cddef894e168361f8562eee939d699c056d6b56ce1bf73f4f259cc1e8d2514d7dce4c330493bb48df1efcd107e31af3

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDbj:ZzFbxmLPWQMOtEvwDpjLeJAsKcbj

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\2024-05-21_c7370437e1a8f07e8460d6aca0028163_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_c7370437e1a8f07e8460d6aca0028163_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5008
    • 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:412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    9d267df8ed8a59e85493a2e4892487e2

    SHA1

    d5257e9d2b7ebaa00ad4c999b2c5cb9b3791fac3

    SHA256

    bb069d37510276d71b6d63232915de3042c6250bc0323b790bf17ffbbb929d9b

    SHA512

    adbba6f627704ff6ee79a458e0b2b66ceaf062df630c91e372a2349ea7c7c7cd97d0456630bb5ebaa91aff1ae3dd23a602b7af57ab81e5fc9106b06ce84e607f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/412-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/412-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/412-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/5008-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/5008-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/5008-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/5008-9-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/5008-18-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB