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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/05/2024, 04:23

General

  • Target

    2024-05-23_222c02d067a4d06f0822d62b65c1c3e4_cryptolocker.exe

  • Size

    48KB

  • MD5

    222c02d067a4d06f0822d62b65c1c3e4

  • SHA1

    df8a407a74cb78db7cd42a4de61314649399c912

  • SHA256

    27a0bf3c76c8328613e85b9a20ba3e6d2cdd98c50963c3d97e8989236ddb4928

  • SHA512

    f792af0a30147ccf65d9ea92d585d8a6b0922960db384eedc55ac63e1b68387a77504f380627e77c7e3fec8f8fbd83c8a00c5a027fbc015ce7a7655fce9d103f

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRhAj:xj+VGMOtEvwDpjy+TRhE

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\2024-05-23_222c02d067a4d06f0822d62b65c1c3e4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_222c02d067a4d06f0822d62b65c1c3e4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4976
    • 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:4560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    7f9f2dce9e9e4cfdb9dafc5c06df7c90

    SHA1

    603d57c579498c01b4b0bfefe9146b1606432082

    SHA256

    1a74a6e0b9f614dc3cb02971cc036931f8d0c954cd6a1e06c316b9dd8e438a86

    SHA512

    3f7ababe73de015c597a44f7fec6859e4ddeda68993b163816992a580539c0e556bc01a69df2a0b32b9db38e983419636756a66391ab88e7353459ed49d2ab0d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4560-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4560-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4560-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4560-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4976-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4976-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4976-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/4976-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4976-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB