Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-09-2024 06:24

General

  • Target

    2024-09-11_22c95522b30423590beaeb1ff060e6b2_cryptolocker.exe

  • Size

    73KB

  • MD5

    22c95522b30423590beaeb1ff060e6b2

  • SHA1

    aacdd09222a8c89cc508724e48e20c0cc05e7181

  • SHA256

    af2a128ec534177d78466f12e255c55b83dfcb6851444d0379e70ac5a49a459e

  • SHA512

    5f765d664b8b4608d7595acf68c3c6be137f1ab9482af9ea817cc021f824e51314629188a84f5dc862a709f03fe0e493f5209a3b4098dedcc14a637530750f0d

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9e:C4Q2c94OtEvwDpj4H8zr

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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-11_22c95522b30423590beaeb1ff060e6b2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-11_22c95522b30423590beaeb1ff060e6b2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:4512

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    14832d15c93d35e3755c4f714052cfe7

    SHA1

    2836f7ee6eee9475215aeadf2720b86385f56f9d

    SHA256

    9f9285b6d4ffe219d2d45183503fb30fb8cda1af4ed76e09d4ccbf39988229ba

    SHA512

    da75e0d326e11d69133ea68c6b26988e77420b9e1d2d454f0b38e20c70266f8e42d40d0a2a79cc7119ce0796c273950ab8b40a7ffe01126e763e31f170a068fe

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3372-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3372-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3372-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3372-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3372-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4512-46-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB