Analysis

  • max time kernel
    149s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 07:43

General

  • Target

    2024-05-31_95a5f063721d8920a6ab00177d3ed902_cryptolocker.exe

  • Size

    38KB

  • MD5

    95a5f063721d8920a6ab00177d3ed902

  • SHA1

    6a0dc2d5754172affb7fa79680cad3e4820af377

  • SHA256

    3e4a91cdd1002e6d1eaf931c9f3b2633eed10a1c484844d808f2d67161ec7907

  • SHA512

    725b693a571bf5569ede7642c05d4d28b1745808be4941948e70da913825b4a6f49188da7962b61e92ec3a5c5db9fbf137cfde284fcff64cf5608f10db25870d

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4KgMO:fT+hsMQMOtEvwDpjoIH3

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\2024-05-31_95a5f063721d8920a6ab00177d3ed902_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_95a5f063721d8920a6ab00177d3ed902_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3452
    • 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:1608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    ca554e22ef89559d2fde4e8d78125983

    SHA1

    67abb80d59bbe80d2698a0e880dc2d50c98ad2b7

    SHA256

    60ba17274009b50bb8e9c8295b6ed91f86ecb3c1c23b031e5d67b1a5262a3d62

    SHA512

    6b52d89d3a3163936d0040a4fc9b8c60c6c1f9b467886c1e7bb147b380da3cd37a4202806670e5c883c3be69f8b5813dc264666609366cfe70ab2fada395d9ff

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1608-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1608-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3452-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3452-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/3452-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB