Overview

overview

10

Static

static

10

Crypter.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    102s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/04/2025, 17:04

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General

  • Target

    Crypter.exe

  • Size

    456KB

  • MD5

    d8952049425e2fb6f5f78f492c64c9fe

  • SHA1

    d09211521898be00535f2cfcb1ecc6fe26e2bb70

  • SHA256

    5be54b2faca1f95a16d0455bda8abae0a4894c2d54048098162011bd7f415985

  • SHA512

    7c887f1962962a22bd604b9f063cb27099c8e681b62b6220dc12694cea89a956a2c2d7a92aed7423b51ea325cc7a17707c7876cec6955c55819e47e62dae812b

  • SSDEEP

    12288:sE0mgj/WQfb48yX/yPqYZjSwBjx9QkTzNMoS7LUKUlVlgvAIsfO8Z9IHzNeC5UaK:cdVEH

Score
10/10
chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Chaos family
    chaos
  • 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
    defense_evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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 2 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 62 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 58 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 22 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\Crypter.exe
    "C:\Users\Admin\AppData\Local\Temp\Crypter.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5368
    • 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
      • Adds Run key to start application
      • 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:1704
      • 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:2112
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3744
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1684
      • 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:5316
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3172
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2184
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2164
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2708
      • 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:4588
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1156
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      C:\Users\Admin\AppData\Roaming\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3008
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1180
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4152
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4080
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4164
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:5780
      • C:\Windows\system32\OpenWith.exe
        C:\Windows\system32\OpenWith.exe -Embedding
        1⤵
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        PID:2400
      • C:\Windows\system32\SystemSettingsAdminFlows.exe
        "C:\Windows\system32\SystemSettingsAdminFlows.exe" FeaturedResetPC
        1⤵
        • Enumerates connected drives
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1612
      • C:\Windows\System32\vdsldr.exe
        C:\Windows\System32\vdsldr.exe -Embedding
        1⤵
          PID:1568
        • C:\Windows\System32\vdsldr.exe
          C:\Windows\System32\vdsldr.exe -Embedding
          1⤵
            PID:1912

          Network

          MITRE ATT&CK Enterprise v15

          Reconnaissance

          Resource Development

          Initial Access

          Execution

          Command and Scripting Interpreter

          1
          T1059

          Windows Management Instrumentation

          1
          T1047

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Defense Evasion

          Direct Volume Access

          1
          T1006

          Indicator Removal

          3
          T1070

          File Deletion

          3
          T1070.004

          Modify Registry

          2
          T1112

          Credential Access

          Credentials from Password Stores

          1
          T1555

          Credentials from Web Browsers

          1
          T1555.003

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          Discovery

          Peripheral Device Discovery

          2
          T1120

          Query Registry

          4
          T1012

          System Information Discovery

          4
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Command and Control

          Exfiltration

          Impact

          Defacement

          1
          T1491

          Inhibit System Recovery

          4
          T1490

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\2012_x64_1_vcRuntimeAdditional_x64.log
            Filesize

            1B

            MD5

            d1457b72c3fb323a2671125aef3eab5d

            SHA1

            5bab61eb53176449e25c2c82f172b82cb13ffb9d

            SHA256

            8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

            SHA512

            ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

            Download Submit

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log
            Filesize

            1KB

            MD5

            baf55b95da4a601229647f25dad12878

            SHA1

            abc16954ebfd213733c4493fc1910164d825cac8

            SHA256

            ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

            SHA512

            24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

            Download Submit

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

            456KB

            MD5

            d8952049425e2fb6f5f78f492c64c9fe

            SHA1

            d09211521898be00535f2cfcb1ecc6fe26e2bb70

            SHA256

            5be54b2faca1f95a16d0455bda8abae0a4894c2d54048098162011bd7f415985

            SHA512

            7c887f1962962a22bd604b9f063cb27099c8e681b62b6220dc12694cea89a956a2c2d7a92aed7423b51ea325cc7a17707c7876cec6955c55819e47e62dae812b

            Download Submit

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

            181B

            MD5

            efd43c043bb8f5068b27444a6fb6f7a8

            SHA1

            902fc0f412e62dceeef016677895e62689a40534

            SHA256

            6a594fcec979c30b5a9ef3870a005ea4c81eb5559342071ebcdf9e8af9a3c720

            SHA512

            57cfee2b39bc5da85d3d276c9746dd6255fa34aff8e2cf891a90edf95d8122b1fc2b50697378f1ca79b411b69d26ddd0a4af26379b93c7a9b0017f328579db87

            Download Submit

          • memory/1704-15-0x00007FFEE61C0000-0x00007FFEE6C81000-memory.dmp

            Filesize

            10.8MB

            Download

          • memory/1704-1491-0x00007FFEE61C0000-0x00007FFEE6C81000-memory.dmp

            Filesize

            10.8MB

            Download

          • memory/5368-0-0x00007FFEE61C3000-0x00007FFEE61C5000-memory.dmp

            Filesize

            8KB

            Download

          • memory/5368-1-0x0000000000660000-0x00000000006D8000-memory.dmp

            Filesize

            480KB

            Download

          • memory/5368-2-0x00007FFEE61C0000-0x00007FFEE6C81000-memory.dmp

            Filesize

            10.8MB

            Download

          • memory/5368-16-0x00007FFEE61C0000-0x00007FFEE6C81000-memory.dmp

            Filesize

            10.8MB

            Download