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
    153s
  • 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 05:24

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General

  • Target

    2024-04-18_03c6accbbd090e2cab4a6a6394907113_chaos_destroyer_wannacry.exe

  • Size

    29KB

  • MD5

    03c6accbbd090e2cab4a6a6394907113

  • SHA1

    8e92ff93b8f275ee14c6eecff681e9e0fc0bdec8

  • SHA256

    9ddbe9ab6f880f354a4429c1d1bdd4647c7202ef59ad673562b5e1bdad56cd16

  • SHA512

    4699e36a81fcdb6b142ed20e81e52989b10c920475913c01452b98aa67eb899848dbae46c1b75db5e377d1b0d5221c8fa8002ef8084788848c4943e182f01d9d

  • SSDEEP

    384:5YenjLLAQKTlZnVZdidYSD2qOVp91b7BYwHUKyP5xDGV:4PlZnVZwc9BBxcxD2

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 (175) 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
  • 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 43 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_03c6accbbd090e2cab4a6a6394907113_chaos_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-18_03c6accbbd090e2cab4a6a6394907113_chaos_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3332
    • C:\Users\Admin\AppData\Roaming\Installer.exe
      "C:\Users\Admin\AppData\Roaming\Installer.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4192
      • 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:3892
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3712
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4912
      • 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:2284
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:952
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2692
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2172
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1360
      • 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:2000
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4500
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3752
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1008
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4864

    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_03c6accbbd090e2cab4a6a6394907113_chaos_destroyer_wannacry.exe.log
      Filesize

      226B

      MD5

      28d7fcc2b910da5e67ebb99451a5f598

      SHA1

      a5bf77a53eda1208f4f37d09d82da0b9915a6747

      SHA256

      2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c

      SHA512

      2d8eb65cbf04ca506f4ef3b9ae13ccf05ebefab702269ba70ffd1ce9e6c615db0a3ee3ac0e81a06f546fc3250b7b76155dd51241c41b507a441b658c8e761df6

      Download Submit

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

      2KB

      MD5

      012472e90beb76df97a23ccb40071ef7

      SHA1

      858b4abb5eb44e9a245d5ea6dc88b5d7647006ce

      SHA256

      190b57d602cc002f71a48d3810dac2bdb6492d3e5ee65ce4d3a862b6bc44c0d5

      SHA512

      b4f58429245de28814ee468250c38ea1b51e42aaddadc3b6219806f5d0a2b98b51ff4b58d4efc7bf71535ba78156f66f0de298a817382394974eb8aae8a6e510

      Download Submit

    • C:\Users\Admin\AppData\Roaming\CopyPop.pptx
      Filesize

      1B

      MD5

      d1457b72c3fb323a2671125aef3eab5d

      SHA1

      5bab61eb53176449e25c2c82f172b82cb13ffb9d

      SHA256

      8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

      SHA512

      ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      Download Submit

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

      29KB

      MD5

      03c6accbbd090e2cab4a6a6394907113

      SHA1

      8e92ff93b8f275ee14c6eecff681e9e0fc0bdec8

      SHA256

      9ddbe9ab6f880f354a4429c1d1bdd4647c7202ef59ad673562b5e1bdad56cd16

      SHA512

      4699e36a81fcdb6b142ed20e81e52989b10c920475913c01452b98aa67eb899848dbae46c1b75db5e377d1b0d5221c8fa8002ef8084788848c4943e182f01d9d

      Download Submit

    • memory/3332-0-0x0000000000E20000-0x0000000000E2E000-memory.dmp

      Filesize

      56KB

      Download

    • memory/3332-1-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/3332-992-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4192-14-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp

      Filesize

      10.8MB

      Download

    • memory/4192-20-0x00000000013C0000-0x00000000013D0000-memory.dmp

      Filesize

      64KB

      Download

    • memory/4192-1029-0x00007FF97ED70000-0x00007FF97F831000-memory.dmp

      Filesize

      10.8MB

      Download