Overview

overview

10

Static

static

10

4dc802894c...9b.exe

windows7_x64

10

4dc802894c...9b.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4294178s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    06-03-2022 05:00

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General

  • Target

    4dc802894c45ec4d119d002a7569be6c99a9bba732d0057364da9350f9d3659b.exe

  • Size

    500KB

  • MD5

    83e1ca89bcd55a87f826bc6901ff7f3e

  • SHA1

    d0db4d232331234f0c430008a4320c0dea993c20

  • SHA256

    4dc802894c45ec4d119d002a7569be6c99a9bba732d0057364da9350f9d3659b

  • SHA512

    9d76d71119fa3256eb25fda06c54f1a51d547177156847ae140176868eb0d7ad41619e6bcb6dd24b523ef58cb3d5e3619172fc6868e1290fc3e956a6e136e6bc

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 24 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\4dc802894c45ec4d119d002a7569be6c99a9bba732d0057364da9350f9d3659b.exe
    "C:\Users\Admin\AppData\Local\Temp\4dc802894c45ec4d119d002a7569be6c99a9bba732d0057364da9350f9d3659b.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:1140
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
      • Deletes itself
      PID:1920

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

    b0ed554f716831162ded778822cc4844

    SHA1

    1c906fe0d9bb6cf21ad3b3dd07ee188d0dca3e68

    SHA256

    a543c54dcc9f7f2ff7a3091ddae9e7da692ab95280304ecec4383f2fc1a92d95

    SHA512

    81dc5c4c8c8b8e07e52b0522755050441aa30c49d57a3656342c281cabbc73dece94034948234c90060a5a726e828655c3eb210b739bb97dac2182827d705366

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  • memory/1140-54-0x0000000075BD1000-0x0000000075BD3000-memory.dmp
    Filesize

    8KB

    Download