Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-04-2024 02:58

General

  • Target

    2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe

  • Size

    34KB

  • MD5

    e88a9595c67f543a3cd3b3e6c8e90909

  • SHA1

    2b753bb897ff07409bcef0c6220672b38a9c8af3

  • SHA256

    2155f439475fd2fa534db20144eeb5a7a116134cc59e70ef67473c2c1b5583b8

  • SHA512

    7d530298ba24120212e782d63a4c7eda3699b1dec52e9535805cc5ddba24ba3e07321da79bde346f448a49b27b1de27b6d23830e695a457f9f1e95e7ebb70fe2

  • SSDEEP

    768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axIM:qUmnpomddpMOtEvwDpjjaYaV

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\2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2096
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    34KB

    MD5

    ed7e54e41cf54e3dc0cc2b7c7c838a64

    SHA1

    1cea3d90499752c992ac6f563b7cf922211e3368

    SHA256

    baaa1b08673e09a52386114b7937bdef9cacc2dc61006b4a028791a9b1ed0877

    SHA512

    62fcb84af52b9b8d63c797a8ed74513d01b04867ab3c7b8179fc6375439041124b460eaf85d69f8b5f73abcbf22f1e8ea8728c3f066497600617e37dc86e04e3

  • memory/2096-1-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2096-0-0x0000000000430000-0x0000000000436000-memory.dmp

    Filesize

    24KB

  • memory/2096-3-0x0000000000430000-0x0000000000436000-memory.dmp

    Filesize

    24KB

  • memory/2096-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2096-14-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2984-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2984-18-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2984-19-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2984-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB