Overview

overview

9

Static

static

ransomware.exe

windows7_x64

9

ransomware.exe

windows10-2004_x64

8

Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25-05-2022 15:45

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General

  • Target

    ransomware.exe

  • Size

    117KB

  • MD5

    bced4f87dbacf3f37886e2e08d933b11

  • SHA1

    d685d1a46456d4c47099b1b25d4a84ec96dcd612

  • SHA256

    cc1e56d32ad111cff31ecf7a53efeeaedfaa2d93ed5f85c8085b56be7643e01a

  • SHA512

    410097c11a568194c5d121a8ea26184c0bf7a3a8fe3a53a27acca9013eac37b7a2da23747f3035d7d087314941755a6ecd514dd9416284e079dccf8a0448dfc8

Score
8/10
evasionransomware

Malware Config

Signatures

  • Disables Task Manager via registry modification
    evasion
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\ransomware.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && vssadmin delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2388
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:3128
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:864

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • memory/2124-130-0x0000000000210000-0x0000000000234000-memory.dmp
      Filesize

      144KB

      Download
    • memory/2124-131-0x00000000051E0000-0x0000000005784000-memory.dmp
      Filesize

      5.6MB

      Download
    • memory/2124-132-0x0000000004C30000-0x0000000004CC2000-memory.dmp
      Filesize

      584KB

      Download
    • memory/2124-133-0x0000000004E40000-0x0000000004EA6000-memory.dmp
      Filesize

      408KB

      Download
    • memory/2124-136-0x00000000065A0000-0x00000000065AA000-memory.dmp
      Filesize

      40KB

      Download
    • memory/2388-134-0x0000000000000000-mapping.dmp
      Download
    • memory/3128-135-0x0000000000000000-mapping.dmp
      Download