Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/01/2024, 22:36

General

  • Target

    2024-01-18_314e8d330d47413771c51271508d9c6a_cryptolocker.exe

  • Size

    124KB

  • MD5

    314e8d330d47413771c51271508d9c6a

  • SHA1

    5b12b269b46c629d810dd9c906941fbc6aff286a

  • SHA256

    0274649686dc57374fcff103c92c97b44acf31ea19d389f09224581504851ed6

  • SHA512

    207fffb07de344ddb0094373289b4f6a941d3eb6cd97b887dd29c2d6d877e7cc64716689b7fd874e92c3dd32c6ba205d81c2d35e0da763480c296dd2aaedab90

  • SSDEEP

    1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBA:vCA9OtEvwDpju

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-01-18_314e8d330d47413771c51271508d9c6a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_314e8d330d47413771c51271508d9c6a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2680
    • 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:468

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    124KB

    MD5

    1715a21bd683edc3d53ffe4a731342ec

    SHA1

    6cb4e576d04ab31c44090c77982a709ce1359104

    SHA256

    1eabfe737f4912238d5c7b8b5ac08bb7dfc33bc5a5f6b59f1a4a4989ef70ccda

    SHA512

    986dbed444e819e6e07fc1971ddd870af7762138fee19d3d52ba65eac9688d53c46d087725ec80c6ef4ed10b9590c369251670c0895e9c514aaf0bc86929aaf3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/468-17-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/2680-0-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/2680-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/2680-1-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB