Analysis

  • max time kernel
    122s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2024 13:28

General

  • Target

    2024-02-14_23c240394996e6d7667aeac1aa3527c2_cryptolocker.exe

  • Size

    48KB

  • MD5

    23c240394996e6d7667aeac1aa3527c2

  • SHA1

    cdd3a8e5614ffd3ccd9dee06d98a91b4e99c5e14

  • SHA256

    6f59939151c3046c02402f467d86af8e5bc77511fefdbaa12740a0c52f43015c

  • SHA512

    e230fc644ba4ba308201ca3fe59300fccd8481aa89f8b517314f3d7eed72f0b90b6a8bbce46809051a9c36fb1e44ad98974b80d44edbe0f097b84d29303ff731

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rzhwas:xj+VGMOtEvwDpjy+Ts

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_23c240394996e6d7667aeac1aa3527c2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_23c240394996e6d7667aeac1aa3527c2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3068
    • 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:4836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    df38b35d0c925271c402afb6a5ca6147

    SHA1

    826cbaabcfa64a97cc3f4dd6c74dabdf1fc9eea5

    SHA256

    a0c7812952a377e30fbaa0abefdc9ba4f112f92aa59c63b8e2c4eb23ae3814cf

    SHA512

    32488caf1af2997e62338c5aad38a80cc8ecf66c54eb454bf924a08c4ad62f00e4b14f721576a55bd916d5b36bbf55a07ae77251f56ad9677e8e7deb603d71ca

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3068-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3068-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/3068-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/3068-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3068-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4836-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4836-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4836-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4836-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB