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Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    29/05/2024, 23:31

General

  • Target

    2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe

  • Size

    44KB

  • MD5

    83aa3b045e7da1a7911be634a18491df

  • SHA1

    c541207982ab3317911a6b5cede2bad3ffac065f

  • SHA256

    51f0347d2f56a888b2641e3e960ada8d45073009e34b9ce8e8cea40497fb63a6

  • SHA512

    0ec947d8d291234b03e8a50baa712e939fbed232ee159ece9bd599d43494af046fc3e6441c6eb478314ef2693dbe38b3d003c895cafd82d33d0759dcf771d614

  • SSDEEP

    768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAIie0E:bCDOw9aMDooc+vAl4

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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\2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_83aa3b045e7da1a7911be634a18491df_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:2384

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    b2fc8a0bf0d9b525e324184b57573f45

    SHA1

    5324a183973d0c13edbec3761762497497abe752

    SHA256

    10c64320407757bd1e49d8cf3361d9c68f49415afeefcfdc5a6e292b960995ae

    SHA512

    7650489479c1f413eb063f7a3fbbc44e06aadebaffb328a6654c588e6511079a367e40585b222886202c0d3ef3bb2ddec22a664737c6406c51870fcfeb8de87f

  • memory/1044-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1044-0-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/1044-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1044-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1044-15-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/2384-18-0x0000000008000000-0x000000000800A000-memory.dmp

    Filesize

    40KB

  • memory/2384-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2384-19-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB