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Analysis

  • max time kernel
    140s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    24/05/2024, 13:30

General

  • Target

    2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe

  • Size

    73KB

  • MD5

    fa64b2944373f55f8816c6ef3d226853

  • SHA1

    bc0a066ac49eb562651103201d42b5880a15d2e6

  • SHA256

    e95cc2307444ecd53c50abf7cdcbb25ea1bce6850ac3ed5cd988c923f3cf0939

  • SHA512

    c585fe991e74479b6cc63722ea87e3b91d0c5364b2f0e541673c1bb1a8ad27115558dfbffb0af11cb67f0f8ef9cc4de02760329b5fe3b3ba92bfc93a27cfbe6d

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs975:C4Q2c94OtEvwDpj4H8zs

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2176
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1648

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    835fcb943bda7daadd1efaa71c586779

    SHA1

    4e7d7b505dc70787f7daadc2f97c13ce61b4bf63

    SHA256

    940c04d6e027d1374d5664f93a9feada9c8b74f64ad20946e8b0106818fe2ad3

    SHA512

    a1ad19dc7ae19635d239aa4e2a79feee722ac39fa188b4f4c2b4d7a5d3574337497f8ec39ba05b2cad127f2215560b9cdb89ce48efad5abe6c4bee4756f514c9

  • memory/1648-18-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/1648-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2176-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2176-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2176-2-0x0000000000480000-0x0000000000486000-memory.dmp

    Filesize

    24KB

  • memory/2176-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2176-16-0x0000000001D70000-0x0000000001D80000-memory.dmp

    Filesize

    64KB

  • memory/2176-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB