Analysis

  • max time kernel
    135s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-01-2024 23:13

General

  • Target

    2024-01-18_ae323796604f9cb22d017726507aa54a_cryptolocker.exe

  • Size

    38KB

  • MD5

    ae323796604f9cb22d017726507aa54a

  • SHA1

    e5336d285cdd032561cc29340b5834d40df22ff8

  • SHA256

    c3acf74e9ca2749c17fcd4413a2200cc075677f1f8e5d0481f0ba68887585411

  • SHA512

    a91e4a0acef6e20dc653e20e7c5a75faf37832b7042ae46406b88e739f7178284136344f7b780ee6eef70982a2d4bdc337786767f51b34685f457645ff730ee6

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnv:m5nkFNMOtEvwDpjG8hgpv

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\2024-01-18_ae323796604f9cb22d017726507aa54a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_ae323796604f9cb22d017726507aa54a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2624
    • 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:3056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    90102329d90dcb3783720c22ee41121f

    SHA1

    aa4a718710a39c52105210e4cfd2f6450082c15a

    SHA256

    ed0a2155dc96ca99a355e6008bb22ef5961d7df2d715b4c61b977fe44faa2fba

    SHA512

    a8946944f567635ef951e7e0e61fa3f5c78e7fcb3d51037d68850c6af87dfebbc536ce8b6dacda030ba545e0ef4a4ad2d27e4242c3cff822512eb2bb73a7a0b8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2624-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2624-3-0x0000000000710000-0x0000000000716000-memory.dmp

    Filesize

    24KB

  • memory/2624-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2624-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2624-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3056-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3056-26-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/3056-20-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/3056-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB