Overview

overview

10

Static

static

10

Encrypt.exe

windows7-x64

10

Encrypt.exe

windows10-2004-x64

10

Resubmissions

15/09/2024, 12:50

240915-p3e4kavfmn10

15/09/2024, 10:12

240915-l8y7vaygnm10

Analysis

  • max time kernel
    208s
  • max time network
    204s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/09/2024, 12:50

Sharing

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General

  • Target
    Encrypt.exe
  • Size 1.2MB
  • Sample240915-p3e4kavfmn
  • SHA256 b15052d17afc1a01e83cdc0624dd268838237f8cd66fa12c56706bdee8a61286
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
chaosdefense_evasiondiscoveryevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\Users\Default\AppData\Local\Microsoft\Windows\Shell\read_it.txt

Ransom Note
  • Don't worry, you can return all your files! All your files like documents, photos, databases and other important are encrypted What guarantees do we give to you? You can send 3 of your encrypted files and we decrypt it for free. You must follow these steps To decrypt your files : 1) Write on our Number :+66 970417453 ( In case of no answer in 24 hours check your spam folder or write us to this e-mail: [email protected]) 2) Obtain Bitcoin (You have to pay for decryption in Bitcoins. After payment we will send you the tool that will decrypt all your files.)

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 6 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 5 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 3 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: AddClipboardFormatListener 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 29 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\Encrypt.exe
    "C:\Users\Admin\AppData\Local\Temp\Encrypt.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3896
    • C:\Users\Admin\AppData\Local\Temp\._cache_Encrypt.exe
      "C:\Users\Admin\AppData\Local\Temp\._cache_Encrypt.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: AddClipboardFormatListener
        PID:3496
    • C:\ProgramData\Synaptics\Synaptics.exe
      "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1716
      • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1988
        • C:\Users\Admin\AppData\Roaming\svchost.exe
          "C:\Users\Admin\AppData\Roaming\svchost.exe"
          4⤵
          • 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:3848
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4600
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              6⤵
              • Interacts with shadow copies
              PID:2828
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic shadowcopy delete
              6⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1680
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1524
            • C:\Windows\system32\bcdedit.exe
              bcdedit /set {default} bootstatuspolicy ignoreallfailures
              6⤵
              • Modifies boot configuration data using bcdedit
              PID:3276
            • C:\Windows\system32\bcdedit.exe
              bcdedit /set {default} recoveryenabled no
              6⤵
              • Modifies boot configuration data using bcdedit
              PID:116
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:5012
            • C:\Windows\system32\wbadmin.exe
              wbadmin delete catalog -quiet
              6⤵
              • Deletes backup catalog
              PID:3732
          • C:\Windows\system32\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
            5⤵
            • Opens file in notepad (likely ransom note)
            • Suspicious use of FindShellTrayWindow
            PID:4752
  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:4756
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1400
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1816
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:3060
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2792

    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

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          Discovery

          Peripheral Device Discovery

          1
          T1120

          Query Registry

          5
          T1012

          System Information Discovery

          5
          T1082

          System Location Discovery

          1
          T1614

          System Language Discovery

          1
          T1614.001

          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

          Synaptics.exe
          • Path C:\ProgramData\Synaptics\Synaptics.exe
          • Size 1.2MB
          • SHA256 b15052d17afc1a01e83cdc0624dd268838237f8cd66fa12c56706bdee8a61286
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          ._cache_Synaptics.exe.log
          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\._cache_Synaptics.exe.log
          • Size 1KB
          • SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
          • MD5 SHA1 SHA512
          Submit Download

          ._cache_Encrypt.exe
          • Path C:\Users\Admin\AppData\Local\Temp\._cache_Encrypt.exe
          • Size 533KB
          • SHA256 04ed744d9643830fc5f0499203a6fde506b5f2c89868695bfe179a8edb3b28c0
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          DCA75E00
          • Path C:\Users\Admin\AppData\Local\Temp\DCA75E00
          • Size 23KB
          • SHA256 16d7c926d3fd48a948961720495ca7384fe6052ea9eed544541e7181e382ea06
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          mTTH21gL.xlsm
          • Path C:\Users\Admin\AppData\Local\Temp\mTTH21gL.xlsm
          • Size 17KB
          • SHA256 8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          ~$mTTH21gL.xlsm
          • Path C:\Users\Admin\AppData\Local\Temp\~$mTTH21gL.xlsm
          • Size 165B
          • SHA256 e4ba04959837c27019a2349015543802439e152ddc4baf4e8c7b9d2b483362a8
          • MD5 SHA1 SHA512
          Submit Download

          2823318777ntouromlalnodry--naod.sqlite.fmdx
          • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\5r4i2p4s.default-release\storage\permanent\chrome\idb\2823318777ntouromlalnodry--naod.sqlite.fmdx
          • Size 48KB
          • SHA256 eec473615513c26e38896bb84739ac3a024356c081d0d68b166540bce3c19f0e
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          read_it.txt
          • Path C:\Users\Default\AppData\Local\Microsoft\Windows\Shell\read_it.txt
          • Size 582B
          • SHA256 db317b799b14715d1b26661dd60570faa3b5c377656d490cd2697f78271c413f
          • MD5 SHA1 SHA512
          Submit Download

          Magnify.lnk
          • Path C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\Magnify.lnk
          • Size 1B
          • SHA256 8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
          • MD5 SHA1 SHA512
          Submit Download

          memory/1716-1643-0x0000000000400000-0x0000000000545000-memory.dmp
          Download

          memory/1716-1612-0x0000000000400000-0x0000000000545000-memory.dmp
          Download

          memory/2524-131-0x00007FF999440000-0x00007FF999F01000-memory.dmp
          Download

          memory/2524-70-0x00007FF999443000-0x00007FF999445000-memory.dmp
          Download

          memory/2524-1616-0x00007FF999440000-0x00007FF999F01000-memory.dmp
          Download

          memory/2524-1613-0x00007FF999440000-0x00007FF999F01000-memory.dmp
          Download

          memory/2524-71-0x00000000006C0000-0x000000000074C000-memory.dmp
          Download

          memory/2524-1611-0x00007FF999443000-0x00007FF999445000-memory.dmp
          Download

          memory/3896-0-0x00000000023E0000-0x00000000023E1000-memory.dmp
          Download

          memory/3896-129-0x0000000000400000-0x0000000000545000-memory.dmp
          Download

          memory/4756-196-0x00007FF977730000-0x00007FF977740000-memory.dmp
          Download

          memory/4756-192-0x00007FF977730000-0x00007FF977740000-memory.dmp
          Download

          memory/4756-194-0x00007FF977730000-0x00007FF977740000-memory.dmp
          Download

          memory/4756-195-0x00007FF977730000-0x00007FF977740000-memory.dmp
          Download

          memory/4756-197-0x00007FF975620000-0x00007FF975630000-memory.dmp
          Download

          memory/4756-193-0x00007FF977730000-0x00007FF977740000-memory.dmp
          Download

          memory/4756-198-0x00007FF975620000-0x00007FF975630000-memory.dmp
          Download