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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14/03/2024, 15:38

General

  • Target

    2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe

  • Size

    86KB

  • MD5

    654946c5af63a955cbb4836fb4b01e90

  • SHA1

    760bc71622ea30d6437dd7f0c1d4bf56bfb7b085

  • SHA256

    45549e88ede5114340b538d6f46817a86d1ff99ef968ee36129c411d80c15477

  • SHA512

    cead2aafaa1d90db81b76b85ad2579b65063416ecf64bcdc9d69f8ff2cb4da5c6ece0115617257831996d749442a54e67e617608ec3c617aa0e7d9a0805779cf

  • SSDEEP

    768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIgj6J:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgi

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\2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    dbad51db5bbecd3349239559d933db23

    SHA1

    d1cc54d67e95adec68878f5d268526c3bd485757

    SHA256

    d82336b71e53e6838f26e6b45f8d5ef6fcfafbf05341f278409404a3c7a54829

    SHA512

    bb5ec08d453448ae50328b288e7ddc99537551f853498354eaf3771c92a46b34ba2df8e4a366682b53f41874d211c11c50445934d43cd39f704585536bb1467c

  • memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1668-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1668-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1668-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2596-18-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2596-20-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB