Overview

overview

10

Static

static

10

f4e2bab6cb...18.exe

windows7-x64

10

f4e2bab6cb...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-04-2024 02:56

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General

  • Target

    f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839_JaffaCakes118.exe

  • Size

    42KB

  • MD5

    5884482db6adca2b8476c395c66805e7

  • SHA1

    4c5b8b834d7d9e8b1316a1b8d2e7b9024022d4ce

  • SHA256

    f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839

  • SHA512

    4e1007fb311c474217b8dfb810d04c2b188deadf56dcd81ee532a48abeb5fc29ff0eae7628cda5aa78f690f46c2370dfb3379e270ee03e83025f7a872f99e52d

  • SSDEEP

    768:AO1oR/RVS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDsUky5DuGMKKz0YnW:AXS1FKnDtkuImNNxFKU

Score
10/10
ransomware

Malware Config

Extracted

Path

C:\Program Files\Common Files\microsoft shared\ClickToRun\+README-WARNING+.txt

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay us. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailbox: [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (3369) 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
  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 64 IoCs
  • 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 2 TTPs 1 IoCs

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

    ransomware
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839_JaffaCakes118.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f4e2bab6cb056c8e644e4b8d4dac7cbf2b972d763f396a475e9fb539438de839_JaffaCakes118.exe" n2252
      2⤵
        PID:1112
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5108
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2008
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2876
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4080
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3268
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3976
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:316
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:1744
      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
        1⤵
        • Drops file in System32 directory
        • Checks processor information in registry
        • Enumerates system info in registry
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        PID:3008

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\Common Files\microsoft shared\ClickToRun\+README-WARNING+.txt
        Filesize

        1KB

        MD5

        4de65197a981d8943c1a44b787db0def

        SHA1

        0246cd0d5b68d5b34eba4fffb0b4d11d7291274d

        SHA256

        6acf156e93cba46ea8921edeed6506bf28d0ef701a92a3e06f4ef29f171d3678

        SHA512

        a589f791420dc30e0c41bc151545b815190f5398cbdc98307f9b1de464cbd1b4622dffddcf7d81fc837ccedf2e804c1d3815c2867b33706284df34a5e0a5c5ce

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