Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    12-02-2024 05:56

General

  • Target

    2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe

  • Size

    33KB

  • MD5

    9e104fdc42e80948f855d7985660be4f

  • SHA1

    f49ba74a25f23357fa90f6afdd51e60dd9c2c897

  • SHA256

    6690dd2eb4f3a3bedf7e71b71f1d633f12c63ff4f7d648cfa00e564aac9c5a02

  • SHA512

    db8c51fc28ed19e1fedb5ab5ce5aecec3ecf0b854ebbdee798cfeaae7713e4081ed805a6454f8519c52a5ae38bb2b4c62c89410c936ddd2b329059182b4947fb

  • SSDEEP

    768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axW:qUmnpomddpMOtEvwDpjjaYas

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2268
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1848

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    33KB

    MD5

    a8bc7f09bc97f91fb7ee33e5e75da0c0

    SHA1

    e6f9195b29d04ad983f42b288e5bace03a87367b

    SHA256

    de93bdf408b6d9937b22217550e83e1c2699784210f52363f709f3456247122a

    SHA512

    c82d3db946a4d981faae4f6d3f5bcc336421e1c640bb9fc8097a61957f320921194f9e7caa172d0011f7d9b5f3843d94ada479ee3aff98974da75a5c76867b46

  • memory/1848-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1848-20-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1848-18-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2268-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2268-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2268-2-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/2268-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2268-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2268-16-0x0000000002700000-0x000000000270F000-memory.dmp

    Filesize

    60KB