Analysis

  • max time kernel
    138s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-01-2024 15:24

General

  • Target

    2024-01-24_6ab2eb723c93e3539c9e1a4a87fffcdc_cryptolocker.exe

  • Size

    53KB

  • MD5

    6ab2eb723c93e3539c9e1a4a87fffcdc

  • SHA1

    1dcdc0e834f1aeb953e366fe462ee9d1e8ce2d07

  • SHA256

    da0761dd885261f3f36f6829e4b34901ad2d65c54ec2b8f1d2f14eb6ed924d29

  • SHA512

    59b831e9f44cb4e756ddfa3c0876ad8daeed467eba77492b39c6254d70709c8fd15722ef9d57b32ed5bbe2ed5d0a40975f45386ce3498041ee8641dd25080fd2

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7E:6j+1NMOtEvwDpjr8oxEG

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-01-24_6ab2eb723c93e3539c9e1a4a87fffcdc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_6ab2eb723c93e3539c9e1a4a87fffcdc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2808
    • 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:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    032e14bf0bdcbc2b305da6135f36e6ce

    SHA1

    d810742f45008349a9e30d8b2e4972b6a45b2887

    SHA256

    0ebf0cd59774325bb371ebd34a534fd6114ca693ea952ead6d810d6c64e63cd2

    SHA512

    2bc3639ba534905c3f96d261af044a8a0928dfeaab37705e1aad9c8d235069ffb78d5a84bf363a7cebe71aa813f4d4b5177133b95f2269b211208b6f8995a64e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2808-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2808-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2808-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2808-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2808-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2952-19-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/2952-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2952-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB