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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11/04/2024, 03:25

General

  • Target

    2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe

  • Size

    84KB

  • MD5

    127db1c95b865f60acd3c31541fe3f5d

  • SHA1

    418a3a0c333c0f7d47f71238edc19e7057237581

  • SHA256

    2e605f03af7eda9334758610937421ca7c54c8ad015a95847670f99dc2fcdbcf

  • SHA512

    24b0fd0870f4e6984b474e101d3ef0cae07b99f52dccbd1a710571322ed1cf30a47b70f1af0ec110470c09c1761e81490a9991aa0d762e6dda4a7247ecfcbc88

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7vM5RQ:T6a+rdOOtEvwDpjNV

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\2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2684

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    c8043483af1cf405d23588cfc0cba1e1

    SHA1

    7bb96a5af4f297b9c87a18354050ec12cbc5d33c

    SHA256

    c64379b057e852a1376f82a25c2a28a53895f6528c95ed1aba0109c220934a9b

    SHA512

    7023b382d514111d3522b1d99c64bc11fac87a288d47999c5ccddb12d49a51d53ff10c33e720cdef1001a96f69f2216e70823d16598db4914c06ab7374d77464

  • memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2044-1-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2044-2-0x0000000000390000-0x0000000000396000-memory.dmp

    Filesize

    24KB

  • memory/2044-3-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2044-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2684-18-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/2684-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB