Analysis

  • max time kernel
    96s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-01-2024 10:11

General

  • Target

    2024-01-19_8d24e22847becac160c4fc9a8d12ccce_cryptolocker.exe

  • Size

    124KB

  • MD5

    8d24e22847becac160c4fc9a8d12ccce

  • SHA1

    8169032445a1663bccab9cf18597ddabcb950180

  • SHA256

    62f070b7d03773977e493258f14c5d9fa0ba86b0302c772f219f3436771bb563

  • SHA512

    33dbe14b13d48dcd6c0cb0dc6c35598ec77b36edcb8321a4f447005c9d4daa931ceb90173a0053055db45779f430992c90887a2f40c2938b8c0580e9e6e212ed

  • SSDEEP

    1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpd:vCA9OtEvwDpjh

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\2024-01-19_8d24e22847becac160c4fc9a8d12ccce_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-19_8d24e22847becac160c4fc9a8d12ccce_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4736
    • 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:5472

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    124KB

    MD5

    6b4b20fb758a69230212a681e0b5aefb

    SHA1

    cf6320a271ab03a6110bb6861e8459af7118b56a

    SHA256

    5ab718439e906cb6b915023325d1a7d40dcc43e1dcfb2fb904ce7829f50ba0e2

    SHA512

    5a11c077ea9a057eef513466e074eb88ce2e8688707f5c3bda34aa29a49f02ebc9a0e81b6fc964d2f559ed00b9d09e3dd340503a5d397991a5e9feffda88d885

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4736-0-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4736-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4736-2-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/5472-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/5472-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB