Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/05/2024, 12:45

General

  • Target

    2024-05-29_e8668090b8a5b7e30f574df77e84ab1b_cryptolocker.exe

  • Size

    60KB

  • MD5

    e8668090b8a5b7e30f574df77e84ab1b

  • SHA1

    348bcebf1b42802d2994cddab7f842bfcfff63c8

  • SHA256

    705395bd3e991521bae0d096c47051ab11a1f2c8ee820c31fbe38770cde4ae6f

  • SHA512

    d1296ca42dd7036105fae9b45e9a7caac9bf9ad8e178cc9095e8280b788669a3f2a3cd226489350745e882b9fb08420fa1ffad2245f8e75ad4c37690a12bc856

  • SSDEEP

    768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pV:H6QFElP6n+gou9cvMOtEvwDpjCpVX7

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-29_e8668090b8a5b7e30f574df77e84ab1b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_e8668090b8a5b7e30f574df77e84ab1b_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    99af4321cb6e6041e1a500d545d38224

    SHA1

    9c535bf5456f23a23eb6ab7ccfd927815bdeb443

    SHA256

    57c78cce5b92837c990414e1a028e4592f8ef5c70ec36c5054849574346186fd

    SHA512

    dd06f0bc050b2464728973e670047e23084e558ccd893020488217f60dbc611f16f8887f58fd495bf08c50f5fe7d1b20c926651d688a7c4b6c8a49eb8ef1fd64

  • memory/1740-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1740-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1740-2-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/1740-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1740-16-0x00000000006D0000-0x00000000006E0000-memory.dmp

    Filesize

    64KB

  • memory/1740-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2504-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2504-19-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2504-26-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2504-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB