Analysis

  • max time kernel
    148s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2024 15:13

General

  • Target

    2024-01-03_27f409bd603b636eed201ee2dba9511a_cryptolocker.exe

  • Size

    36KB

  • MD5

    27f409bd603b636eed201ee2dba9511a

  • SHA1

    1e67681563ccb4e46cb919060ea8fefc7031b96c

  • SHA256

    da43c1b22a83abab6491d8d159fdc5847e1d74af8cfd9a54f1bab8ec196b9232

  • SHA512

    a009528ae37881b32c5b38b5218eb861cacd9fcebb07ae1c3b318c59a874420c341ac1117c26a07ac3807829e8f170e06d210d140b4b443c799dc44c035a8ecb

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpS:m5nkFNMOtEvwDpjG8hgpS

Score
7/10

Malware Config

Signatures

  • 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\2024-01-03_27f409bd603b636eed201ee2dba9511a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-03_27f409bd603b636eed201ee2dba9511a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2044
    • 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:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    36KB

    MD5

    33d85b67a0ca1bb175099f36c57bb866

    SHA1

    cd1fff4d44cffa17d5ad5a5e2602c3d8a717805b

    SHA256

    2491b7799d2b340095457ec264d4907f865838915fa7ec82a050506c442ec2bd

    SHA512

    f5f576d4ffefe8ddbfd349ad45ada5eff6a849471d5cbedb40bb7d88143b998e62b955100db1236766178c483a2000a5829a6a080f27c12dfc51dd8a049616f5

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2044-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2044-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2044-2-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2044-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/2044-14-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2536-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2536-21-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/2536-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2536-28-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB