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
    24-05-2024 04:45

General

  • Target

    2024-05-24_d5338df66edbcc3b8788b40fc723469d_cryptolocker.exe

  • Size

    71KB

  • MD5

    d5338df66edbcc3b8788b40fc723469d

  • SHA1

    41778795cee0a2532fe9098a8a8e86544edbbd2c

  • SHA256

    ff0bde34d1deaa5d7914732a2fcad43b7a3955ce99958be76738a556be25f9a6

  • SHA512

    a4d4483e5a9e8afd6566976f25996189da9625b1eeaae7ffb14a400935e28cd4059261d82fa641b37e504e454815b63845d9e40998a99fdd18976798af8071bc

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9I+:C4Q2c94OtEvwDpj4H8zk

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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_d5338df66edbcc3b8788b40fc723469d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_d5338df66edbcc3b8788b40fc723469d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    71KB

    MD5

    6516c72398ac85892f7fcf024a5f0d36

    SHA1

    fa6afc50e9048825b3b15d2594640324bc928032

    SHA256

    a5548596e67d11e5a4eea5390bbe4fdd1534270c57d3f981d38655b125c09d93

    SHA512

    f86a63d726fcf499ce394be268c1ebf23dc25e495bf20ba5fc394ff9d5d20a7959fc625d8671954d4f8bcb115eba9e101fbb5d7b90ac0601e911a2bcc258743a

  • memory/2592-18-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2592-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2592-25-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/3028-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3028-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3028-2-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/3028-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3028-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB