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Overview

overview

10

Static

static

10

2024-05-22...ry.exe

windows7-x64

10

2024-05-22...ry.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 09:49

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General

  • Target

    2024-05-22_731178dd28d3b8ee829fb6ac4d3c065a_wannacry.exe

  • Size

    323KB

  • MD5

    731178dd28d3b8ee829fb6ac4d3c065a

  • SHA1

    11c4a6be0a123812b916d4a8eba96857f311d906

  • SHA256

    c9bd1abfb6e520d973284f2fbebaf14cd1cf5db7c2e2956e9d4a9b0564547b81

  • SHA512

    9d2b61b08b9d1b8503ae647d27d5cf4604dfc81ff2c923933ea3bae473d8a3a4bdfe7032486baf1dfe5a28c51bc1f57a79f07ac289e045087dd9ebbbc870c024

  • SSDEEP

    3072:ooy4lr9N4L/mQZt2FWtMB6w31viSYrwCa2CybjDjBJRrrS0n4+3GK2vVort6jbQG:fr9N4LS6MBrYH3vxshzmZ6jO7SV2

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
  • Detects command variations typically used by ransomware 2 IoCs
  • 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
  • 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) 34 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 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\2024-05-22_731178dd28d3b8ee829fb6ac4d3c065a_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_731178dd28d3b8ee829fb6ac4d3c065a_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\Users\Admin\AppData\Roaming\Update.exe
      "C:\Users\Admin\AppData\Roaming\Update.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:4808
      • 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:4608
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4452
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2884
      • 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:4652
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4632
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1188
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3188
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3228
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\OPEN_THIS.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:456
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1652
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:244
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2152
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2976

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      323KB

      MD5

      731178dd28d3b8ee829fb6ac4d3c065a

      SHA1

      11c4a6be0a123812b916d4a8eba96857f311d906

      SHA256

      c9bd1abfb6e520d973284f2fbebaf14cd1cf5db7c2e2956e9d4a9b0564547b81

      SHA512

      9d2b61b08b9d1b8503ae647d27d5cf4604dfc81ff2c923933ea3bae473d8a3a4bdfe7032486baf1dfe5a28c51bc1f57a79f07ac289e045087dd9ebbbc870c024

      Download Submit

    • C:\Users\Admin\Documents\OPEN_THIS.txt
      Filesize

      758B

      MD5

      745498991ec43eb0d48752bf88932dc4

      SHA1

      92bdbff4154276f56455f1a521ba89dae6623b99

      SHA256

      34c42da9263345dd5cd1e1999ae6cc5d651505c7ac8e83fc79870c5401c4316a

      SHA512

      2c5e027393f4a74c688193c0de18a4c5d92186a466b09f9e10f3bd213d6be1ba4e47176cbac3d85b92b924d62b4db478caac2172959a8eeb23f8e9081476b778

      Download Submit

    • memory/2188-0-0x00000000002C0000-0x0000000000318000-memory.dmp

      Filesize

      352KB

      Download

    • memory/2188-1-0x00007FF9EBA33000-0x00007FF9EBA35000-memory.dmp

      Filesize

      8KB

      Download

    • memory/4808-14-0x00007FF9EBA30000-0x00007FF9EC4F1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4808-22-0x00007FF9EBA30000-0x00007FF9EC4F1000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4808-455-0x00007FF9EBA30000-0x00007FF9EC4F1000-memory.dmp

      Filesize

      10.8MB

      Download