Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    13-06-2024 03:31

General

  • Target

    2024-06-13_4716da0e36dd7220ba15f19456245e4d_cryptolocker.exe

  • Size

    40KB

  • MD5

    4716da0e36dd7220ba15f19456245e4d

  • SHA1

    6d22fb23b4dd24a6243d9c980b940988ac5c73b5

  • SHA256

    c1ee36d6bcdb22b7bdd3bc7aefba9d2bdf94cebe0b12f06e27e78a0ee9cd2134

  • SHA512

    d54ec1f175378b8e0d033a274290dcc4ffacff92134d1e6fd327870408044cd184a256c2278e63c2a10c6fa009b6ffa9962929b174214384e6a6a6a70abeb88d

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDb20:qDdFJy3QMOtEvwDpjjWMl7TdV

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\2024-06-13_4716da0e36dd7220ba15f19456245e4d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_4716da0e36dd7220ba15f19456245e4d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    3b3859ae61535127d864a25dbcb849d1

    SHA1

    26b57962685e271d9d9747ffe581d0a4ea243a46

    SHA256

    05c15cc886efa5f3a61f45742e53fe4c35948d1c3d58cadf54ecd68a4e31f16d

    SHA512

    d580ec2f0783dd40dd74e4edb6e0681c60ec3855208c36c69cdb1c921759b0e471a61b604e925768dcdb68233e58d91d05a8e4679bc2b7802762d9587d4d8f91

  • memory/1728-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1728-24-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1728-17-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2192-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2192-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2192-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2192-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2192-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB