Analysis

  • max time kernel
    16s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    27-08-2024 19:34

General

  • Target

    aa62ff9d44c493287764f1efa85f236c2d633d68724d907279709559b56572d2.exe

  • Size

    27KB

  • MD5

    12964292654b711b26b0039661181e7b

  • SHA1

    37b01028df0a60e9f945776f14b6f44f1980061f

  • SHA256

    aa62ff9d44c493287764f1efa85f236c2d633d68724d907279709559b56572d2

  • SHA512

    19bb5a23832acff3bba40f31655b9cf604dadd1f92c8af4e9ccf480c9f39947fb8177ecae43e3f642b2fac82e7afda65afd2d38ed0c31e0a135374f21b9d55ad

  • SSDEEP

    384:QtWZPzzxAm1vp5ZRoDNhvLKeOS2NiCXlROy5o91+WSFpQ082v5:l7zxAmpfyzeeOSSi2ho9wWSFb82R

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\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 e-mail :[email protected] ( 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.

  • Chaos Ransomware 3 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Disables Task Manager via registry modification
  • Drops startup file 2 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 30 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa62ff9d44c493287764f1efa85f236c2d633d68724d907279709559b56572d2.exe
    "C:\Users\Admin\AppData\Local\Temp\aa62ff9d44c493287764f1efa85f236c2d633d68724d907279709559b56572d2.exe"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2744
      • 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:2728
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2820
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2532
      • 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:1376
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2300
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1008
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2200
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3016
      • 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:904
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2636
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1852
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2840
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:2956

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\read_it.txt

        Filesize

        582B

        MD5

        ed5cc52876db869de48a4783069c2a5e

        SHA1

        a9d51ceaeff715ace430f9462ab2ee4e7f33e70e

        SHA256

        45726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36

        SHA512

        1745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5

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

        Filesize

        27KB

        MD5

        12964292654b711b26b0039661181e7b

        SHA1

        37b01028df0a60e9f945776f14b6f44f1980061f

        SHA256

        aa62ff9d44c493287764f1efa85f236c2d633d68724d907279709559b56572d2

        SHA512

        19bb5a23832acff3bba40f31655b9cf604dadd1f92c8af4e9ccf480c9f39947fb8177ecae43e3f642b2fac82e7afda65afd2d38ed0c31e0a135374f21b9d55ad

      • C:\Users\Admin\Desktop\ImportMeasure.svg

        Filesize

        1B

        MD5

        d1457b72c3fb323a2671125aef3eab5d

        SHA1

        5bab61eb53176449e25c2c82f172b82cb13ffb9d

        SHA256

        8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1

        SHA512

        ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0

      • memory/2212-0-0x000007FEF5DD3000-0x000007FEF5DD4000-memory.dmp

        Filesize

        4KB

      • memory/2212-1-0x0000000000CA0000-0x0000000000CAE000-memory.dmp

        Filesize

        56KB

      • memory/2212-3-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2212-9-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2744-8-0x0000000000EC0000-0x0000000000ECE000-memory.dmp

        Filesize

        56KB

      • memory/2744-10-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2744-11-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

        Filesize

        9.9MB

      • memory/2744-998-0x000007FEF5DD0000-0x000007FEF67BC000-memory.dmp

        Filesize

        9.9MB