Overview

overview

10

Static

static

10

4dc802894c...in.exe

windows7_x64

10

4dc802894c...in.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    05-01-2021 19:38

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General

  • Target

    4dc802894c45ec4d119d002a7569be6c99a9bba732d0057364da9350f9d3659b.bin.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 4 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.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\4dc802894c45ec4d119d002a7569be6c99a9bba732d0057364da9350f9d3659b.bin.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:468
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\update.bat" "
      2⤵
      • Deletes itself
      PID:860

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\update.bat
    MD5

    75cc55377c2348720a37f9bdace6ce14

    SHA1

    fd6d28d77391b6453296dd65fb5b475d68da5c47

    SHA256

    1d6b39b6ca1dee8e0ab2067d4a6e09650eed9ca275a10aa3e44baa21ada377f6

    SHA512

    d53c4ee271dcdc7115e9167510ab497d4c31d8925dd41943ca4e29e18ff5e5eff074462873452647c950d809860907602305d6ac6083fc83c218bbcc6b60f729

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  • memory/860-2-0x0000000000000000-mapping.dmp

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