Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    17-05-2024 16:47

General

  • Target

    2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe

  • Size

    25KB

  • MD5

    aef78f46044d7cd4000c244e07cb0e91

  • SHA1

    6f91ce25fc3a7888d7ca1b78428f760c77f6c5e8

  • SHA256

    67e186e160b03e8b473a6099bbdc15453e697d5b3c2895d01451d3b94b085160

  • SHA512

    a566886eff4edb6dc88dd3571dd1a66759d8b110c9739f1851f04bc08e3613c9120b5e77e796543febc57b3f810d9b21daccf18c4dae97e6ee0b31fce829f37f

  • SSDEEP

    384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HnpObd:bVCPwFRo6CpwXFXSqQXfjAHAp

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:2368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    25KB

    MD5

    9d0ef089bfb840e5b4a0d4ecf8d11904

    SHA1

    72271c0045c1609dfc61e6b48dfb049157592e63

    SHA256

    e26464d53ce9a2d5b53146438156ffeb1a7761b28ce624af63dacdf8ce3db31a

    SHA512

    ce5863424df887a1f55fe8d4d202f6655a107d0678ff049939cd64522ca5abdc6cc8a394044e3af8dbd9d4554bc9fdc0934e1a96624f4d5d71029cb041efc2a2

  • memory/1512-0-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB

  • memory/1512-9-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1512-1-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1512-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1512-16-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB

  • memory/2368-17-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB

  • memory/2368-19-0x00000000003B0000-0x00000000003B6000-memory.dmp

    Filesize

    24KB

  • memory/2368-26-0x00000000003A0000-0x00000000003A6000-memory.dmp

    Filesize

    24KB

  • memory/2368-27-0x0000000008000000-0x000000000800E000-memory.dmp

    Filesize

    56KB