Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20-02-2024 09:33

General

  • Target

    2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe

  • Size

    61KB

  • MD5

    68d8d05902f8eee7f44291ea80cdd968

  • SHA1

    052a8dbdaf7926d0acae8cb991b52ed82341ca68

  • SHA256

    65fbeef18cb58f8c8d74a141a1edc613b3ff26e817fa374341c843e72040daa8

  • SHA512

    1660914226d841f7c790c696c59490508af2d316281cd5531793537e0bf31843798d2ecefafb2a9b55d3942ace2a7b89579c227f6436a5150dc9a571bd22f7f6

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5aFr7YOzR8l/A:z6QFElP6n+gKmddpMOtEvwDpj9aYaFA8

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 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\2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    94ccff879673c80784473df036f221cd

    SHA1

    4d14dd32cc7248e6ca413df22b1bd9c09a7ac820

    SHA256

    4e97dab1f399117dd1743d4dfcbb790b1d7e09fab98352e4d3ee757c20d59ca0

    SHA512

    0c4a7400fd3fbf1c8d5cdecb8b484c58bfc287abb5a9b16612f4b37c1b36770ef6fb89186920758487a6e7d302d121525fddb4f2bf40d3eee411c2ef333218f2

  • memory/608-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/608-20-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/608-19-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/608-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1204-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/1204-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1204-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/1204-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1204-14-0x0000000002800000-0x0000000002810000-memory.dmp

    Filesize

    64KB