Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 01:26

General

  • Target

    2024-05-27_3978d354be573ec78a9604d7f5394980_cryptolocker.exe

  • Size

    42KB

  • MD5

    3978d354be573ec78a9604d7f5394980

  • SHA1

    96edeaa80d22493624c82015311ba7f59ce5b4e9

  • SHA256

    324dfe3c9a0a8fab45e2690c65ffa93804ea9f815d7a2e71b5c4a3f200c10cf7

  • SHA512

    18abf624301c6d70a14c3215ff6155af3a323783d6b39a4742a146c3f74506a9d9e5922e49eab7747241b890df2e8de771b2dadc7be2301f5b8b7b5873a15ad1

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhfD:i5nkFGMOtEvwDpjR+viHshN5D

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-05-27_3978d354be573ec78a9604d7f5394980_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_3978d354be573ec78a9604d7f5394980_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3308
    • 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:4788

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    43KB

    MD5

    079807efb30a98b931a4837cd6deee86

    SHA1

    37f80c89081331f7a431fb321148025b33a23d97

    SHA256

    3d23f055ac1f79944dd081ee4eb9b325a848a2b245dc6f18afd5a86fbb1023cb

    SHA512

    c796279f7d44a67f7fa9813bdb2fa55f67b8f4bd24ae61b170be299adbfc64594b1684bd7f43c2e72d99dd536f4620b36a70a45de3f5c84ba7501707d2402a3f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3308-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3308-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3308-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3308-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3308-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4788-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4788-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4788-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB