Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    21-04-2024 20:09

General

  • Target

    2024-04-21_9f6b221d7eee85dcac8c7b62607c982d_cryptolocker.exe

  • Size

    38KB

  • MD5

    9f6b221d7eee85dcac8c7b62607c982d

  • SHA1

    3010b2fed059c7158d1419c53998ad80faf317e9

  • SHA256

    520c910b5f6988109349fabdab21c4054b7484c718c66664723154588276e58a

  • SHA512

    e2d6f2df1cb219a386e947d2fd08a5d7748437c01d9ec73cabaa94a06ae55faf648185aa811cf96414058b0631958a4272ad5271ca6b0d6c9582b20f979b2f14

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9Z:qDdFJy3QMOtEvwDpjjWMl7TS

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\2024-04-21_9f6b221d7eee85dcac8c7b62607c982d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-21_9f6b221d7eee85dcac8c7b62607c982d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2980
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    2f974bc65dc2b4c9d4342d8ea306ec72

    SHA1

    3116e57ad4c404ed9b58c733855da3942ead8e2e

    SHA256

    f55836e89ceb0e8607604581a0f2da65a967f3ca4febfe431198751a868ae310

    SHA512

    65ec20ee1de5f4b6dba43b70fe28d5f386d3abe936f48179e3f9ddfafa0b37a1c032389f5f92493c9f3f565b330766c2e3b4ca4b1bf764cf01b31ff3a2cf1226

  • memory/2976-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2976-19-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2976-21-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/2976-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2980-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2980-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2980-2-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2980-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2980-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2980-16-0x0000000001CF0000-0x0000000001D00000-memory.dmp

    Filesize

    64KB