Overview

overview

10

Static

static

049263e712...6c.exe

windows7_x64

10

049263e712...6c.exe

windows10_x64

10

2a2eb971b8...d0.exe

windows7_x64

10

2a2eb971b8...d0.exe

windows10_x64

10

32d6be4f86...f3.exe

windows7_x64

10

32d6be4f86...f3.exe

windows10_x64

10

39ef1d9afd...d8.exe

windows7_x64

10

39ef1d9afd...d8.exe

windows10_x64

10

3a83805e3a...7e.exe

windows7_x64

10

3a83805e3a...7e.exe

windows10_x64

10

d1b6ee9b71...2b.exe

windows7_x64

10

d1b6ee9b71...2b.exe

windows10_x64

10

Analysis

  • max time kernel
    44s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    16-06-2021 05:59

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General

  • Target

    d1b6ee9b716fe48e51ac4e6bec691366bb08d507773d61a5d14fb15ec5e25e2b.exe

  • Size

    500KB

  • MD5

    4b1111e3ff64fa9836047ed70f0e93b2

  • SHA1

    44013f5f6f5c88482441f1fa673e1ada7d6e845f

  • SHA256

    d1b6ee9b716fe48e51ac4e6bec691366bb08d507773d61a5d14fb15ec5e25e2b

  • SHA512

    166e785132a0474149196cbd77f0b4644a3676dc8f4b7e55ece6e92275e1caffd30db2a82a0b3f3dd1ba52dd2683dfc74dfc5f669990d4157a9af17b6c0c793a

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 16 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\d1b6ee9b716fe48e51ac4e6bec691366bb08d507773d61a5d14fb15ec5e25e2b.exe
    "C:\Users\Admin\AppData\Local\Temp\d1b6ee9b716fe48e51ac4e6bec691366bb08d507773d61a5d14fb15ec5e25e2b.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:3840
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
        PID:2008

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Data Encrypted for Impact

    1
    T1486

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\update.bat
      MD5

      dab70e038164bf277f4de3c7f371c6c8

      SHA1

      4e8d0d693aeb2e277189931e124228ec79347796

      SHA256

      1ab854d5aff437e6dd72a814080293ac8e9c651bb2f7220acdb1cf848f3a8769

      SHA512

      b19a35e1b4df889dc009034374365b1c09e774375166bd5897ca96588bbf69a9d0a5814b477d6ceedd77199ac1aed4200e670f8721c6e6a74b39a5d9740ffb27

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    • memory/2008-114-0x0000000000000000-mapping.dmp
      Download