Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-06-2024 03:04

General

  • Target

    2024-06-05_631db2092ec4db0367f69a380c65986b_cryptolocker.exe

  • Size

    40KB

  • MD5

    631db2092ec4db0367f69a380c65986b

  • SHA1

    036066ea314b80262076a8edda1cab3dfa85e3b7

  • SHA256

    bbad72f3cab68ed95ea557273e7fd059c584ed43699f59c8da0390cd86387a4a

  • SHA512

    ff47c9724bdfa9227a860a35ebdda18d40de745b955211e17aa3943f61a6cb025840f623c4c386631908b89c65aeb8e86a4e6db691a64a770a48d9ff06432018

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYlm:qDdFJy3QMOtEvwDpjjWMl7T6m

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\2024-06-05_631db2092ec4db0367f69a380c65986b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-05_631db2092ec4db0367f69a380c65986b_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2308

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    6a9111da05fb16f9a5e5085bf8dc1791

    SHA1

    1e2c48bf0faa1115d8a15ba9b21808346eee8bdd

    SHA256

    eb8826064b0b0ca36971e74c617a84951f58a2a5556ec6334868c75f90f86708

    SHA512

    c2f48df155e274dc840aeb8ad90cee371e5e41fd7b64aac756e8dc5e8d2c295891bdbe44dd8a9e5af0e2d10b20345b31432481f4755c5d0422a92e7879071f2e

  • memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2228-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2228-2-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2228-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2308-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2308-26-0x00000000001E0000-0x00000000001E6000-memory.dmp

    Filesize

    24KB

  • memory/2308-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2308-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB