Overview

overview

10

Static

static

10

44f1def68a...in.exe

windows7_x64

10

44f1def68a...in.exe

windows10_x64

10

Analysis

  • max time kernel
    119s
  • max time network
    157s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    24-12-2021 11:15

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General

  • Target

    44f1def68aef34687bfacf3668e56873f9d603fc6741d5da1209cc55bdc6f1f9.bin.exe

  • Size

    500KB

  • MD5

    6db85bacef3cac6deb69911af522e2b7

  • SHA1

    6aa7b2744a7e3975f0dff3672ec633b687ef5fbd

  • SHA256

    44f1def68aef34687bfacf3668e56873f9d603fc6741d5da1209cc55bdc6f1f9

  • SHA512

    7fbeb7cd7c09eb758e7dbbbe388e742a4d4a5e2933edcc3c0d57d4225918a5b9ac8259ebfcd71ae588e3b459aa5fa2ad8efad635ebc86f271cae7d272e1f8361

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 12 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\44f1def68aef34687bfacf3668e56873f9d603fc6741d5da1209cc55bdc6f1f9.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\44f1def68aef34687bfacf3668e56873f9d603fc6741d5da1209cc55bdc6f1f9.bin.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:3596
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
        PID:2504

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads