Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-06-2024 02:29

General

  • Target

    2024-06-11_5a46f698edc2dbf6876bb08e870883bf_cryptolocker.exe

  • Size

    51KB

  • MD5

    5a46f698edc2dbf6876bb08e870883bf

  • SHA1

    70744c6b57e18042caabe28c07310b45d46e822c

  • SHA256

    090f4016f80426f395c3607a0339788ef988cbc73e0b78737b79dd48a6152a14

  • SHA512

    a38c80f394312b1c2d64374901b80893d11acbd3c80c4450af2ee00da507aed2facb608339745b3008fdf004e497fe30f6f1a59a121fd47c7cde9ebb4e8a8b21

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyj:6j+1NMOtEvwDpjr8hhXy+iyyj

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-06-11_5a46f698edc2dbf6876bb08e870883bf_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_5a46f698edc2dbf6876bb08e870883bf_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2444
    • 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:4564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    51KB

    MD5

    6bbcba0a3827e21b00fe5f2cc355ea91

    SHA1

    cc8f40f9b551d0cd834032be60834b9203570b0c

    SHA256

    25b53de36db1bba18d8f13bbcfc97d026b79e336efac1bad00169921736e584a

    SHA512

    53d561e28f6498d70b2dcd1c9b8cb7ff0b6c9c5eeb98a90c12858fead96e8a0c26ed119050d4d5daff9b1afbb0b76bd015daf182e89e2d9603548060314881b8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2444-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2444-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/2444-2-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/2444-9-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/2444-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4564-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4564-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4564-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4564-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB