Analysis

  • max time kernel
    87s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 06:27

General

  • Target

    2024-02-13_ea7c26ca1795ba7f4b04ad82037fc1cf_cryptolocker.exe

  • Size

    48KB

  • MD5

    ea7c26ca1795ba7f4b04ad82037fc1cf

  • SHA1

    e154502cdc387033cea9b81294aad12d13202528

  • SHA256

    c3b0c013e0b06bec650809b241a8e2964ea02c4e7f23fe7fd67bb90acdcaef4a

  • SHA512

    3ceb598dc129fb21d32ca708f784cbc3c8daf3ef4450075653a55d03df502973650423bf080e1a7deec126b22945f2e8498cd9d926186aa2d88522eb823af7ff

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/74zpzD:XS5nQJ24LR1bytOOtEvwDpjNbP/0Gg5

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-02-13_ea7c26ca1795ba7f4b04ad82037fc1cf_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_ea7c26ca1795ba7f4b04ad82037fc1cf_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5000
    • 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:3012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    49KB

    MD5

    a6f3e71c88ea4e8696f5f6c131d90f14

    SHA1

    cb734a4a3c5c08da2f85e227eea5d7faa174bf35

    SHA256

    f653075dd727ac6677bed9da987166d8b1f786c4cc16fe22e6778cd3e0a4731d

    SHA512

    84bcb4b8b7cd61c3557a6025ff3cc71706773f0dd0c18ed30d551f4de3d45ccdc9bb112b4905fa5e18214b161387303458d9b1b665dbd4eae2ce7d83ab445cff

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3012-21-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3012-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3012-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/5000-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/5000-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/5000-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/5000-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/5000-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB