Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 11:47

General

  • Target

    2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe

  • Size

    53KB

  • MD5

    68f9b80fa62126d747afb496d4d6e20b

  • SHA1

    b7c38ab7d1c2cc1adb81d80c244d0d5126a18d2e

  • SHA256

    493e847e11da2f138088b71f0f6e7be58a5f131c6aa6a7c688cd233d5e4d8cd5

  • SHA512

    5ba113599b5608aa13e489b3af39aaebad4f87619b1079f047ecb5055d06744a4e498ca831d226b1f520ad67ee3be3c62772113c5dca5ec9dbd0a251e3b7e402

  • SSDEEP

    768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOuq:bODOw9acifAoc+vo

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_68f9b80fa62126d747afb496d4d6e20b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:4048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    53KB

    MD5

    42b86aff9b7d65e56d1171f88a7e2db8

    SHA1

    2aeebef86d6080f0296a3e342bf9f80b63907611

    SHA256

    8c3ab61c7c6d6b07aebc82db53a138d14acd2a63ceb02ec2d655b6f328b17202

    SHA512

    ea0e058c91ccf5e433cde8d92bd7bf4d028137924130013c351f3116ba6fc678097dcae7c1c2a8cd670150ee2ebdbeadea44ec66c824c32bcb45cee856674ba5

  • memory/776-0-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/776-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/776-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/776-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/776-17-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/4048-18-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/4048-20-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/4048-26-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/4048-27-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB