Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-05-2024 08:37

General

  • Target

    2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe

  • Size

    62KB

  • MD5

    e8574fda6b4ddf235348bc12598d9c0a

  • SHA1

    0ae32d2d34c9a63042a93dcd52b2e0edf21ae64e

  • SHA256

    4e184d635dd2679d0258169ac290031ee1d441c7cd0c92d2e8160e6d101e0e81

  • SHA512

    ac57669ec3485909c71d5cfa2bbfa282fb371600834816c88c5d9c389cf32fce2b4deca51dddcfb815be03c44e87bde5db9f3955a74f33eabd499a199dbd4db4

  • SSDEEP

    768:P8mnjO6LsoEEeegiZPvEhHSG+gbum/kLyMro2GtOOtEvwDpjKvWxHCbSVaFn0jKF:P8mnK6QFElP6n+gymddpMOtEvwDpjYM+

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 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\2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-05_e8574fda6b4ddf235348bc12598d9c0a_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2816

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    9a1c8b39188557a91a3c93a7c0427eb7

    SHA1

    9768f2fad27ecb12f9f86e25371f510e1e9edd0c

    SHA256

    66c313cc1befb6c1394638d5db45b08564939dce9fcbdbfe91ccb2abbb0be041

    SHA512

    9d45fa77f97ab54cc2d829ebc4207a4f8b7dce5d9b05928468247eb8667ea67e09b21cb4cd1e5ed0c6039fdf63971e74c273eeb73faaf2565f57bca027c8bcd9

  • memory/2804-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2804-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2804-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2804-2-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2804-13-0x0000000001FA0000-0x0000000001FB0000-memory.dmp

    Filesize

    64KB

  • memory/2804-15-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2816-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2816-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2816-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB