Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 04:26

General

  • Target

    2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe

  • Size

    90KB

  • MD5

    6bb2c0e8946fb6a65e72b25049ce1497

  • SHA1

    95cbb72cb3f45c4d7f1ddf5779de82c966d3d4a5

  • SHA256

    ae5b6978ad96f502a04ea64f94e228f0607955670733f9e9794d1e0eec1b03b3

  • SHA512

    8f426f668937f367c88cd228b0ee49c86ff82f96e8c7d31bf14eab6214e73df12c6d7493fbac7d28d395754ccb738cc15fda20af9485981115dfdeb199db85e4

  • SSDEEP

    1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyJ:n6a+1SEOtEvwDpjYYvQd2Pg

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\2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3924
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    90KB

    MD5

    6682adce728a988fb6f324532b300b4c

    SHA1

    da222e8ed4ad99a36ca1d84ddaf9ea19e1f37614

    SHA256

    105d1f619d01223cfa7d9c8350ef431196e986e5b8208fd2cbc122cdbb4ba516

    SHA512

    9e4b71418f5a9af73761f148f18d68188dd9d729bd17f1ab641a86cc210910937200731b6d164d4192e36e999f7c578118d33561bb9487ba397474e272dde429

  • memory/824-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/824-20-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/824-26-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/824-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3924-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3924-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3924-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3924-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3924-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB