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
    151s
  • max time network
    93s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • 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 14 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\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:1096
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
      • Deletes itself
      PID:572

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/572-61-0x0000000000000000-mapping.dmp
    Download
  • memory/1096-60-0x0000000075281000-0x0000000075283000-memory.dmp
    Filesize

    8KB

    Download