Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 14:28

General

  • Target

    2024-05-21_7fffafab00305551a368d46462bc9e1b_cryptolocker.exe

  • Size

    37KB

  • MD5

    7fffafab00305551a368d46462bc9e1b

  • SHA1

    78031ed80083693342ba5e638040e6169a1292e2

  • SHA256

    0523d47948cc5d7d36dd48377f15e983e9cfb9ae5a0721e5d113e44f0c65a892

  • SHA512

    d1f5dd1c2c10347fab8eb92091e5a0f3d3089fc4f80cc9c62cdb8ae7164544c63af4c904d8db424dc54a3c6447a7581b9b34f57eec4cd57a6cf857546ecda356

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4h6o:fT+hsMQMOtEvwDpjoIHh6o

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\2024-05-21_7fffafab00305551a368d46462bc9e1b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_7fffafab00305551a368d46462bc9e1b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1572
    • 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:2408

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          38KB

          MD5

          41f548a10665b6bc845b1c61a45513ca

          SHA1

          15b4f12004889ab21d4d90a95455fcae1bfb3e9d

          SHA256

          dae75750c0de93376d9adc6c4e2713d8b56ce4ea10eb157a6165fcec9693e65a

          SHA512

          386b630bd2a860a78594d526790768325c0e551f9f0198f3e55a086aa2c4d3ac5f874814c569080964ee3bc169bdeeb1aa507354a242d813eac312e44298a337

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1572-0-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/1572-7-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/1572-1-0x0000000002110000-0x0000000002116000-memory.dmp

          Filesize

          24KB

        • memory/2408-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/2408-23-0x00000000021D0000-0x00000000021D6000-memory.dmp

          Filesize

          24KB