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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    27/03/2024, 04:20

General

  • Target

    2024-03-27_f23741f0ee2f9ea1991d62b51730e2b2_cryptolocker.exe

  • Size

    149KB

  • MD5

    f23741f0ee2f9ea1991d62b51730e2b2

  • SHA1

    d2c6e1b6ff239a4053472f169b1c99e532c943ec

  • SHA256

    939173135ec998c4a7d9381707ecdb3d956eedaa95f687b342e3d4191042978f

  • SHA512

    3e4398783ec48eb9bb12352cd26d8b916d77900e6e246be1cb34f881438155eae1825e38c049061f38afb51ff8afda215019dc4c8220ae57a341660dbc746ab9

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp699GNtL1e2i:z6a+CdOOtEvwDpjczh

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\2024-03-27_f23741f0ee2f9ea1991d62b51730e2b2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-27_f23741f0ee2f9ea1991d62b51730e2b2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2988

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    149KB

    MD5

    2b5a04434c8556d6330cc66ea0092897

    SHA1

    873b31def73c238e0aa48b1405f07b5c589f93b6

    SHA256

    e4883421b6528d3f3ffb9e1883bb372c409f938cea1291dc583b8f508bdd4156

    SHA512

    1d13aa5725ce7f6d4d139a891620186372a406bd770a138b31f8fd2e0f9f2180e3c73ec206aff2dae5b32dc619e626e4f908f3e2bff0d0886c060654cccb3b09

  • memory/2516-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2516-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2516-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2516-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2516-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2988-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2988-18-0x0000000000450000-0x0000000000456000-memory.dmp

    Filesize

    24KB

  • memory/2988-19-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/2988-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB