Overview

overview

10

Static

static

10

1e20095494...le.exe

windows7_x64

10

1e20095494...le.exe

windows10_x64

10

Analysis

  • max time kernel
    52s
  • max time network
    118s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    26-07-2021 12:59

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General

  • Target

    1e2009549452ed6b524b94ed683079ee60c2b9542b1bfd5b9ee42e9161d5e7c8.sample.exe

  • Size

    499KB

  • MD5

    367734ce59f38110fb0333a4d28a89dd

  • SHA1

    7830608d116bec1cc8414fef03ea7d098201e051

  • SHA256

    1e2009549452ed6b524b94ed683079ee60c2b9542b1bfd5b9ee42e9161d5e7c8

  • SHA512

    7b68c7a05bd380b46c18048af8ec189110114e26fce1332f488ac8d4b09cf735bb60b3902654c5df1e443f89c5dcf6c87526acc324ea0ff066be0e68356dc0f8

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\1e2009549452ed6b524b94ed683079ee60c2b9542b1bfd5b9ee42e9161d5e7c8.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\1e2009549452ed6b524b94ed683079ee60c2b9542b1bfd5b9ee42e9161d5e7c8.sample.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:1968
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
        PID:1808

    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

      74da6877c4d26a343f6cabd491a951da

      SHA1

      257a4995a59d28142076b6fe90447d6f9e357bdf

      SHA256

      c0f5a8f776ba3638f1162e586386bf0a305479c154072d49261f1cf0ffaa0489

      SHA512

      e3dab8c75b4ba2e14e6af61280422fd0e63dc8916a36ecee43abede0e905fdb6be552113fc3c4dd588f8070de5f4c02998d6442bb0ba36c5ac0df187f1447455

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    • memory/1808-114-0x0000000000000000-mapping.dmp
      Download