Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 20:51

General

  • Target

    2024-05-22_e9326c92642038c5aebc42e5df691b52_cryptolocker.exe

  • Size

    42KB

  • MD5

    e9326c92642038c5aebc42e5df691b52

  • SHA1

    272b485767daabba3390c32b229d8b071a65e5e1

  • SHA256

    93dc187f818330a2f57a355a0c74f18ae0392e4e071972e61d128bfecdff01f2

  • SHA512

    85761cdb0004948136e865a6167e288c8d8a71d00d278a8896daaecf68a58d26d11c332cc0c077f3afc2b0a83ebb1987c6ccc054da1903f4ba12be76fdcbebc8

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhL:i5nkFGMOtEvwDpjR+viHshNd

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\2024-05-22_e9326c92642038c5aebc42e5df691b52_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_e9326c92642038c5aebc42e5df691b52_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2744
    • 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:4432

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    9300a640b5fe1ca83db4b2275d8f580d

    SHA1

    6fd3fb54fe9d212d73b7fdacd2f7ef7129f32fec

    SHA256

    0585068ca1fd8e2b347cc0a8cfd6b71d54d3c1eedc3f5ae7b87a8b404005d651

    SHA512

    2305b0382bfc0a85e1d62058298f3fa1da221587613749ae4642d12875d429af51b6e29ffe24c3de8737f4bcb0c26d03de833d97b51948e5654b75cd19d03d14

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2744-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2744-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2744-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2744-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2744-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4432-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB