Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    05-05-2024 04:24

General

  • Target

    2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe

  • Size

    93KB

  • MD5

    1b4c83b17c514c124f9fa2d3a1bd15f1

  • SHA1

    d8c0b2ef70acbbb90dc47190be426352f2ad7e95

  • SHA256

    5d928707bfab628841cfff46052d1151121339dc556d2ca1a2c6c89575c2da05

  • SHA512

    f7ff385926681e9db4184b17545f65f6f589a95713eab001f83a99f4b9941c8407ce50e510fc9e508741ff364adc285d6b16331a6e336850f6c628725e3353b7

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/d:zCsanOtEvwDpjBd

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\2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1680
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2192

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    93KB

    MD5

    988945e86bb60487dd3ca4a53a950959

    SHA1

    876841e76a5fb43b408d4cc7a92d30d21b73fe65

    SHA256

    5192d5c62d867dabb7ce12ff5423ad7d3b8cc22f412f7910f1e3d98e922c00ec

    SHA512

    1472be938d309b40e8c692524d71a840d3dd611fd792accfa4c13e07a4c3d44071783dcc201979ae9fc3a46943d3c9a6cd855e80a3e54140afdb58d59501439c

  • memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1680-1-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/1680-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/1680-9-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2192-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2192-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2192-25-0x0000000000260000-0x0000000000266000-memory.dmp

    Filesize

    24KB

  • memory/2192-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB