Overview

overview

10

Static

static

10

1e20095494...le.exe

windows7_x64

10

1e20095494...le.exe

windows10_x64

10

Analysis

  • max time kernel
    46s
  • max time network
    66s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • 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 12 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • 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 7 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:1644
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
      • Deletes itself
      PID:1064

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/1064-61-0x0000000000000000-mapping.dmp
    Download
  • memory/1644-60-0x0000000075411000-0x0000000075413000-memory.dmp
    Filesize

    8KB

    Download