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
    82s
  • max time network
    86s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    16-06-2021 05:59

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General

  • Target

    32d6be4f86451871f70590f01ce01e9263abe18286db1272928a23c125e844f3.exe

  • Size

    500KB

  • MD5

    22402bcb2bdc85f46506abe19ed3d21c

  • SHA1

    bf17708e0e90dfadbbecd0fadbf9f392b3ccfbb5

  • SHA256

    32d6be4f86451871f70590f01ce01e9263abe18286db1272928a23c125e844f3

  • SHA512

    f29ee747e8ce22f954fb5ac8329e162489f04099113d5a7d1e0205a8f9956135dbade1524a15f88974551a3477d905164a056f4c9495341abd6cb8b25f8e3961

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 22 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\32d6be4f86451871f70590f01ce01e9263abe18286db1272928a23c125e844f3.exe
    "C:\Users\Admin\AppData\Local\Temp\32d6be4f86451871f70590f01ce01e9263abe18286db1272928a23c125e844f3.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:596
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
        PID:2148

    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

      82c87898d10d138f3fda1a0f645a3115

      SHA1

      38fccff5489a2b9d13025f083cdabe302e0ac0ac

      SHA256

      cfdaa52a4177b1de718c22e0c7c345e446f58d8fbf0c306a81470fbaff876114

      SHA512

      65b9a0e5a788579a8c4249211d9d5614a0dbda90f44fcad479bd31890c5e834684626f41644d3bf8f2ba03069360f0756323e433aa97446476b369b783e641ca

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    • memory/2148-114-0x0000000000000000-mapping.dmp
      Download