Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14/03/2024, 15:48

General

  • Target

    2024-03-14_b11b02950798ac6c306962238f4beab9_cryptolocker.exe

  • Size

    71KB

  • MD5

    b11b02950798ac6c306962238f4beab9

  • SHA1

    886ce1299b6319c7135344f70b548319d236a2cd

  • SHA256

    28d18eccd29d9580fad15f5742844e1d35b09c3c216970235eda6de9363db00a

  • SHA512

    19dd3dd62aaa54825e8677307ccbbf3d6bf890c9b7e3930da579fc4938c6a3be694a1d601a633006810014c521919eabfbb2b702233531191eb81b3824cb4ea3

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalV5:1nK6a+qdOOtEvwDpju

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\2024-03-14_b11b02950798ac6c306962238f4beab9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-14_b11b02950798ac6c306962238f4beab9_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1844

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    684d7d2b99b670f4df36890a3b1eb9ae

    SHA1

    6eefac688f86edb31ddf5b52d3c588c4e149cdef

    SHA256

    079897bb957ca493510c29d83095ab16fcff81d9254a0428814eb81166f1500c

    SHA512

    51f8bc09d7318fcf28dbcdbf010cfc5cbad9a052d34881ad563ba20a86cf00d13496584dad3e1e89b412310adcae62a13e2cab1a74bae6f60e2f75fedf1bbab8

  • memory/1844-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1844-18-0x0000000000200000-0x0000000000206000-memory.dmp

    Filesize

    24KB

  • memory/1844-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/1844-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2336-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2336-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2336-2-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2336-3-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2336-14-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB