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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    30/04/2024, 02:52

General

  • Target

    2024-04-30_a20b0bff9547a4cd3b07441c6e1f08eb_cryptolocker.exe

  • Size

    64KB

  • MD5

    a20b0bff9547a4cd3b07441c6e1f08eb

  • SHA1

    789e050005769a715b3b199c63a3dfc9aa2a1286

  • SHA256

    1285802afe2aa367443cf49cf03c7a11139d200e3fd2c9bb53457dd8b4152f4d

  • SHA512

    d51705967d47a1990efe3da01b5d952c5e3ca91bd2cff6105bb606c2cae0aafe88659a2c25d7006b7f74ed3e11fb0a33e9720db6fa2943ca825ed42d1e19d3a9

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAo3:1nK6a+qdOOtEvwDpjZ

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 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\2024-04-30_a20b0bff9547a4cd3b07441c6e1f08eb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_a20b0bff9547a4cd3b07441c6e1f08eb_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    f215f8ab9b0fdda0bd7642e8f8862d64

    SHA1

    1687bb4cd949468f82d93698c11a2f3d4dbd71a7

    SHA256

    3c15d787793a89c21becee9e05a36396f6568813bc0eed8f8276cc73b7c74c67

    SHA512

    65a1f6f83452c7fc7bfa98e7becb5508734168f02f6b2be7958074cc5dadb6dde95c6d123708dec14fe24567363597195abb9645914ac8dc14627df46477c403

  • memory/2784-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2784-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2784-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2784-2-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2784-12-0x00000000006D0000-0x00000000006E0000-memory.dmp

    Filesize

    64KB

  • memory/2784-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/3048-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/3048-19-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/3048-26-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/3048-27-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB