Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    19/02/2024, 16:41

General

  • Target

    2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe

  • Size

    80KB

  • MD5

    89aa2bba10fab9a0ec5268f9581ad259

  • SHA1

    4b5ed772687d67a1a07c28001aa50631f5a2e9c5

  • SHA256

    aee0d92a4bf5e02905ab80aa811d95227a8eab289ceb7951fcdf7844c8986a23

  • SHA512

    aca8d43439a2d8550e1d04e7bf47539fc5a069fc38e1a3cd57ac45452c8e3d10aa9dbf0fe54aac19f6c7c25fde4b04f2f6a1bc87e7f0c9cf29245d41378bf5a1

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBd08:T6a+rdOOtEvwDpjNtD

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\2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    80KB

    MD5

    7cb7ffb555a6dfc01997c209a1576ffc

    SHA1

    6e73253ca0e8f4935f6f529a2591c85ad69dc974

    SHA256

    0f2980e3347914aaf261e3665784844ba44ba41460e79b7d428c39a97b3369f2

    SHA512

    3cef5e52f407b9ca7bff69c81d93ffadac2149f9d1a96742ea7dde8b45b87045ed26092672c166af0f2c4d57609c151a4270da55cd7ba00157e95f773001dfff

  • memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2312-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/2312-3-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/2312-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2832-18-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2832-23-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2832-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2832-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB