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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/04/2024, 08:30

General

  • Target

    2024-04-20_62b89cde4629503c02210a385b551df6_cryptolocker.exe

  • Size

    96KB

  • MD5

    62b89cde4629503c02210a385b551df6

  • SHA1

    f64ca65eea7680f940f6cc8a52d22d76964b5028

  • SHA256

    2f15c09dc613d992685f3de0c82a0170f2895e1ea04c465b253a14e5f9705c6c

  • SHA512

    fde0e9cdfc9b678ff70e15714aa7cb5d670fb67945a9d23b7d0f2439527bb22c19ce3dd62f473b5e26df3d23cf0f34b6445490e4d0f1625b205a3f572160856b

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpYy9pL:AnBdOOtEvwDpj6zQ

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-04-20_62b89cde4629503c02210a385b551df6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-20_62b89cde4629503c02210a385b551df6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:832
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    97KB

    MD5

    a0a9a8a43b1d295ed94d69a5cf772825

    SHA1

    4cf78f85cc4739b713395bfb9f7ceac2301fae02

    SHA256

    783fed882d380a7ae448ff3ee4ae448c7556d2651f0e1ed613d9e42a762115db

    SHA512

    343ebc0d99700508621d583d2001c8bcf5e60303fe7f3b3e6456f40ea33b608032008b3bdec8a17fb03cf1e86d28110b2fcc756103c58bcee16c0bc2c2334f26

  • memory/832-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/832-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/832-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/832-3-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/832-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3556-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3556-20-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/3556-24-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/3556-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB