Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    21/02/2024, 14:57

General

  • Target

    2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe

  • Size

    68KB

  • MD5

    d39f7673a1b0ef45b90648c9dd5e12fe

  • SHA1

    0019664fa9a89706378b64f9b2d9486edee739e1

  • SHA256

    86949b3cebbb661f11a3b354b7df6aa8558995b4640e850464f61b9db45594a3

  • SHA512

    dfb8865d6bbe38e0b894545c35090543fc91d0b622d1e8a4d18935fb68bf52473b1a1beb3bec16022ec5055dcd8946937b549c92fe42d582b704ed5381c42e20

  • SSDEEP

    1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUsn:DW60sllyWOtEvwDpjwF85W

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2676
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2732

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    58c333ffbc44067581e318b3114bc623

    SHA1

    3545470f25d1e15315c636ca7d5515b803ab3337

    SHA256

    721ff8133d61a75e513fc4b803495efdb9242d414bbd137ca2e730a15154211c

    SHA512

    effd8fc3676272857dc54afdbb68e9f65b844af4a58408248cc04652f27e5c2380ebd4ed51061cd06a0918826e8ecb110508d49e333ffab787a29c54095e9183

  • memory/2676-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2676-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2676-2-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2676-5-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2676-14-0x0000000002800000-0x000000000280B000-memory.dmp

    Filesize

    44KB

  • memory/2676-15-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2732-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2732-19-0x0000000000200000-0x0000000000206000-memory.dmp

    Filesize

    24KB

  • memory/2732-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB