Overview

overview

10

Static

static

10

2024-10-06...ry.exe

windows7-x64

10

2024-10-06...ry.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    95s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-10-2024 00:04

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General

  • Target

    2024-10-06_27155b7a69ea88dc9419bc41c888c71c_wannacry.exe

  • Size

    266KB

  • MD5

    27155b7a69ea88dc9419bc41c888c71c

  • SHA1

    8b9ac105e975c9c22b731703dc080427f8973bf9

  • SHA256

    3f37eba38f0d399f33a98df657f9632d489dd10ba9741e2ba9e0b2056ef90124

  • SHA512

    75d08dd318ddc8a59dd65e5fcfc4a2f8ec8bd42a08b23acdc566d8adf73101f905b9d0c4631fa863f9b9dec92b996b742e95e1f28700689391181fc618bfc940

  • SSDEEP

    3072:2c9/eQxG5h7KMjlen9O0uE8o15OJlDUZbUVnWB3P1tPBLazb5YHPYvijQts1vlKC:2c9WQA70fO/yXBttPtFIEh1lVK/

Score
10/10
chaosdefense_evasionevasionexecutionimpactransomwarespywarestealer

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • 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 3 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 3 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 51 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\2024-10-06_27155b7a69ea88dc9419bc41c888c71c_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-06_27155b7a69ea88dc9419bc41c888c71c_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2952
    • C:\Users\Admin\AppData\Roaming\Word2024t.exe
      "C:\Users\Admin\AppData\Roaming\Word2024t.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:2656
      • 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:724
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3920
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1028
      • 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:2020
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:5052
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4008
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4740
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2536
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:4920
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1460
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3892
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4736
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2028

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-10-06_27155b7a69ea88dc9419bc41c888c71c_wannacry.exe.log
      Filesize

      226B

      MD5

      28d7fcc2b910da5e67ebb99451a5f598

      SHA1

      a5bf77a53eda1208f4f37d09d82da0b9915a6747

      SHA256

      2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

      SHA512

      2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

      Download Submit

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

      459B

      MD5

      486fa8802a705b9d3924c9bc97a7809c

      SHA1

      ab9b7e3446580a01308f8479cb9b2af079e2ff89

      SHA256

      3ea88fe5bf3f08691979a1022783f63c4cbe73b7f83c6ebd908dc1e897f6aacf

      SHA512

      2031713a347822f9f30d1defaa45e4c96fbf4712793b41dcaa0e15607fd310e7d01b98e05a0d86dd9685b8a5b4a5ac054b27a8b0aadf17a1632690c63a310cf2

      Download Submit

    • C:\Users\Admin\AppData\Roaming\EnterSearch.dot
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • C:\Users\Admin\AppData\Roaming\Word2024t.exe
      Filesize

      266KB

      MD5

      27155b7a69ea88dc9419bc41c888c71c

      SHA1

      8b9ac105e975c9c22b731703dc080427f8973bf9

      SHA256

      3f37eba38f0d399f33a98df657f9632d489dd10ba9741e2ba9e0b2056ef90124

      SHA512

      75d08dd318ddc8a59dd65e5fcfc4a2f8ec8bd42a08b23acdc566d8adf73101f905b9d0c4631fa863f9b9dec92b996b742e95e1f28700689391181fc618bfc940

      Download Submit

    • memory/2656-14-0x00007FFCB3200000-0x00007FFCB3CC1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2656-45-0x00007FFCB3200000-0x00007FFCB3CC1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2656-1120-0x00007FFCB3200000-0x00007FFCB3CC1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2656-1121-0x00007FFCB3200000-0x00007FFCB3CC1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2952-0-0x00007FFCB3203000-0x00007FFCB3205000-memory.dmp

      Filesize

      8KB

      Download

    • memory/2952-1-0x00000000007C0000-0x0000000000808000-memory.dmp

      Filesize

      288KB

      Download