Overview

overview

10

Static

static

10

2024-04-18...ry.exe

windows7-x64

10

2024-04-18...ry.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-04-2024 04:30

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General

  • Target

    2024-04-18_1d6025022bfdb40942e18ef789f64f96_wannacry.exe

  • Size

    233KB

  • MD5

    1d6025022bfdb40942e18ef789f64f96

  • SHA1

    28ce22e4a5c86354557f47f7c2793ca9d47df88d

  • SHA256

    59fe6fa8ae7590f93842e8a97e10d29571671fe8346444b3483d05622d261782

  • SHA512

    b89556247ea57cc2d3e1bce534772e641fa9bcc4be983b4f2365dc20bd4d64401562b74d066de72143b6961fa98c8d463493859dc0fefdccb003bfdf3a6a2f36

  • SSDEEP

    3072:C3c9wrWZt+em3xr8E1Q8dm0NYuaacYee2bE6//hXngpw4MmFQGvDre:C3c9hVr0Cu+Fp8Hvn

Score
10/10
chaosevasionransomwarespywarestealer

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Detects command variations typically used by ransomware 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (178) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Disables Task Manager via registry modification
    evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 3 IoCs
  • Executes dropped EXE 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 desktop.ini file(s) 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 45 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-18_1d6025022bfdb40942e18ef789f64f96_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-18_1d6025022bfdb40942e18ef789f64f96_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4788
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4988
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1412
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3324
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4404
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2332
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2468
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4752
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\READ_ME.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:4720
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1952
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1380
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4912
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2988

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-04-18_1d6025022bfdb40942e18ef789f64f96_wannacry.exe.log
      Filesize

      226B

      MD5

      28d7fcc2b910da5e67ebb99451a5f598

      SHA1

      a5bf77a53eda1208f4f37d09d82da0b9915a6747

      SHA256

      2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

      SHA512

      2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

      Download Submit

    • C:\Users\Admin\AppData\Local\READ_ME.txt
      Filesize

      81B

      MD5

      d9b9662c3363ad8c743b2e8db632c946

      SHA1

      898de3476e6b8e80dd8a9dbb595c7895f570711d

      SHA256

      4994491e1ba3ae448d63823b05a70366f2396f963f1425a658fcd1f9376940f4

      SHA512

      f512f276e25bedbe9c25d5124f1cbbc1404461a052ac2b6d53057bff0e44931b4057259d7c760bddcc31baaf6c7a00911846889c357b00b8c51ad900017602d4

      Download Submit

    • C:\Users\Admin\AppData\Roaming\ImportCompress.wma
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      233KB

      MD5

      1d6025022bfdb40942e18ef789f64f96

      SHA1

      28ce22e4a5c86354557f47f7c2793ca9d47df88d

      SHA256

      59fe6fa8ae7590f93842e8a97e10d29571671fe8346444b3483d05622d261782

      SHA512

      b89556247ea57cc2d3e1bce534772e641fa9bcc4be983b4f2365dc20bd4d64401562b74d066de72143b6961fa98c8d463493859dc0fefdccb003bfdf3a6a2f36

      Download Submit

    • memory/1684-0-0x0000000000D20000-0x0000000000D60000-memory.dmp

      Filesize

      256KB

      Download

    • memory/1684-1-0x00007FFDB7AC0000-0x00007FFDB8581000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/1684-15-0x00007FFDB7AC0000-0x00007FFDB8581000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4532-14-0x00007FFDB7AC0000-0x00007FFDB8581000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4532-1171-0x00007FFDB7AC0000-0x00007FFDB8581000-memory.dmp

      Filesize

      10.8MB

      Download