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Overview

overview

10

Static

static

10

2024-09-18...ry.exe

windows7-x64

10

2024-09-18...ry.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    92s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/09/2024, 07:29

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General

  • Target

    2024-09-18_7ed302cebbc723b8d88c338bb214e7f7_wannacry.exe

  • Size

    170KB

  • MD5

    7ed302cebbc723b8d88c338bb214e7f7

  • SHA1

    fa4a8d360fc38ba049c7cbd4ea8b73832e753da8

  • SHA256

    dec248ceef5b72c14f69a67833b94f6eb5d329e04f9fa815ea35787e55b8f5f5

  • SHA512

    a5234647ef1fdcb6dc61144c78522578437e9e6c36e47dd99cdc6cadaae1abd8314c2c69a83897f5721a28d863047abf9c91f6e166b1e624c18ccf733746010c

  • SSDEEP

    3072:r+c997iL9/Fuit7QQClhw5QF7lUOtBmSM57ezHljt07tR1LyDwPxt:ic99Gzu0QVhmlKmSpz7+tRUDw

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 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 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 49 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\2024-09-18_7ed302cebbc723b8d88c338bb214e7f7_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-18_7ed302cebbc723b8d88c338bb214e7f7_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3224
    • C:\Users\Admin\AppData\Roaming\don't_turn_off.exe
      "C:\Users\Admin\AppData\Roaming\don't_turn_off.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:2444
      • 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:2872
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2368
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3128
      • 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:1244
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:316
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:212
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2948
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4432
      • 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:1644
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4776
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1112
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4344
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2196

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\2024-09-18_7ed302cebbc723b8d88c338bb214e7f7_wannacry.exe.log
      Filesize

      226B

      MD5

      28d7fcc2b910da5e67ebb99451a5f598

      SHA1

      a5bf77a53eda1208f4f37d09d82da0b9915a6747

      SHA256

      2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

      SHA512

      2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

      Download Submit

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

      934B

      MD5

      f98bd39f65a43065409c4e3a1e341588

      SHA1

      47f53bb0f720ecb877c9455e5bb1e14762a28c57

      SHA256

      d32d08ba37dc0222de5be0ffb2022dcb59e31ee9f39a9235514192b65f732a4c

      SHA512

      0daaa59125f137dcddd5f6b8dc3a823db677c64ecb02d842860a4b48f201a999b010e23e3691efcecf3eb8d985fcb9c13daf04e3614425d6dcd41323af809a1d

      Download Submit

    • C:\Users\Admin\AppData\Roaming\SyncOpen.css
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

    • C:\Users\Admin\AppData\Roaming\don't_turn_off.exe
      Filesize

      170KB

      MD5

      7ed302cebbc723b8d88c338bb214e7f7

      SHA1

      fa4a8d360fc38ba049c7cbd4ea8b73832e753da8

      SHA256

      dec248ceef5b72c14f69a67833b94f6eb5d329e04f9fa815ea35787e55b8f5f5

      SHA512

      a5234647ef1fdcb6dc61144c78522578437e9e6c36e47dd99cdc6cadaae1abd8314c2c69a83897f5721a28d863047abf9c91f6e166b1e624c18ccf733746010c

      Download Submit

    • memory/2444-14-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2444-43-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2444-1129-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/2444-1130-0x00007FFE70900000-0x00007FFE713C1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3224-0-0x00007FFE70903000-0x00007FFE70905000-memory.dmp

      Filesize

      8KB

      Download

    • memory/3224-1-0x0000000000A10000-0x0000000000A40000-memory.dmp

      Filesize

      192KB

      Download