Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    24-05-2024 04:10

General

  • Target

    2024-05-24_e5b89afc04cfcf4705fe14eef1fd30d1_cryptolocker.exe

  • Size

    60KB

  • MD5

    e5b89afc04cfcf4705fe14eef1fd30d1

  • SHA1

    1226299b21746d200d19fc570033d51be56ba628

  • SHA256

    71bde2e7e9e9c0095de88257ad615f5a50d91f4e188c7549b4362c82fd732fd5

  • SHA512

    019cd2eedc3467cdd958a7c0549c39c1593a71e7b58105702347ae944bb81b4f29564cd3426a71065cc31da82bc90a6c7b1fab5155f594a49e975fb396d41a20

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaUf3j:z6a+CdOOtEvwDpjQo

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\2024-05-24_e5b89afc04cfcf4705fe14eef1fd30d1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_e5b89afc04cfcf4705fe14eef1fd30d1_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1148
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    60KB

    MD5

    ae3fba5d4043d19804bd6b186b145469

    SHA1

    a34404bbbb9d897d85cec504e2da32b1542d71f3

    SHA256

    bb3ee86fab2b695021b82c955e4f46ddc68dc0351118cad6334b5c4e65733649

    SHA512

    eb9be1609aca906c785e39e39d1b0f3349628978ed37136bc083e907a06e15dd8f374d996b0c8e29af9ee5da2ad8a86b5e8bdf3dd4f7c6772bbb806aa171a847

  • memory/1148-0-0x0000000000500000-0x0000000000510000-memory.dmp
    Filesize

    64KB

  • memory/1148-2-0x0000000000480000-0x0000000000486000-memory.dmp
    Filesize

    24KB

  • memory/1148-9-0x0000000000240000-0x0000000000246000-memory.dmp
    Filesize

    24KB

  • memory/1148-1-0x0000000000240000-0x0000000000246000-memory.dmp
    Filesize

    24KB

  • memory/1148-15-0x0000000000500000-0x0000000000510000-memory.dmp
    Filesize

    64KB

  • memory/2096-16-0x0000000000500000-0x0000000000510000-memory.dmp
    Filesize

    64KB

  • memory/2096-18-0x0000000000340000-0x0000000000346000-memory.dmp
    Filesize

    24KB

  • memory/2096-25-0x00000000002C0000-0x00000000002C6000-memory.dmp
    Filesize

    24KB

  • memory/2096-26-0x0000000000500000-0x0000000000510000-memory.dmp
    Filesize

    64KB