Overview

overview

10

Static

static

10

90cf355600...92.exe

windows7_x64

10

90cf355600...92.exe

windows10_x64

10

Analysis

  • max time kernel
    55s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    08-04-2021 04:29

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General

  • Target

    90cf35560032c380ddaaa05d9ed6baacbc7526a94a992a07fd02f92f371a8e92.exe

  • Size

    500KB

  • MD5

    bc92920af8fcf53ccf9efd3c9d52e13a

  • SHA1

    8ec2266a0e4c807973a27bc9cf5b10b4d11f6c5c

  • SHA256

    90cf35560032c380ddaaa05d9ed6baacbc7526a94a992a07fd02f92f371a8e92

  • SHA512

    a5a9c06cb664594f2ab18b5582faf6dc4f0c0e92978f3059b036d7855bec1b69ccf9591e7b0b535dae84f6dc63c3b414d10cb37d1dac14b481a4dc0dc4258d2d

Score
10/10
mespinozaransomwarespywarestealer

Malware Config

Signatures

  • Mespinoza Ransomware 2 TTPs

    Also known as Pysa. Ransomware-as-a-servoce which first appeared in 2020.

    ransomwaremespinoza
  • Modifies extensions of user files 18 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of WriteProcessMemory 3 IoCs
  • System policy modification 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\90cf35560032c380ddaaa05d9ed6baacbc7526a94a992a07fd02f92f371a8e92.exe
    "C:\Users\Admin\AppData\Local\Temp\90cf35560032c380ddaaa05d9ed6baacbc7526a94a992a07fd02f92f371a8e92.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:496
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
        PID:584

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads