Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    20-07-2022 19:16

General

  • Target

    4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647.exe

  • Size

    340KB

  • MD5

    18f7d4a5e3d6f5069ecc4b00f32ef46d

  • SHA1

    8aa8f940c6084c3d31c4f813d599725c3c47b309

  • SHA256

    4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647

  • SHA512

    6f9446c86de8e484d18cacc20b056cd8b7fbb633ad73c7543f42a8d85626eaa94f6ac98a2acc84a4679453cbfe026d55e9226ed0954b10a62a3baa5ea3893095

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3440072777-2118400376-1759599358-1000\_RECOVERY_+swxnj.txt

Family

teslacrypt

Ransom Note
NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with AES More information about the encryption keys using AES can be found here: http://en.wikipedia.org/wiki/AES How did this happen ? !!! Specially for your PC was generated personal AES KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/CB3C903A3B71ECC2 2. http://tes543berda73i48fsdfsd.keratadze.at/CB3C903A3B71ECC2 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/CB3C903A3B71ECC2 If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser 3. Type in the address bar: xlowfznrg4wf7dli.onion/CB3C903A3B71ECC2 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/CB3C903A3B71ECC2 http://tes543berda73i48fsdfsd.keratadze.at/CB3C903A3B71ECC2 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/CB3C903A3B71ECC2 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/CB3C903A3B71ECC2
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/CB3C903A3B71ECC2

http://tes543berda73i48fsdfsd.keratadze.at/CB3C903A3B71ECC2

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/CB3C903A3B71ECC2

http://xlowfznrg4wf7dli.ONION/CB3C903A3B71ECC2

Signatures

  • TeslaCrypt, AlphaCrypt

    Ransomware based on CryptoLocker. Shut down by the developers in 2016.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647.exe
    "C:\Users\Admin\AppData\Local\Temp\4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Local\Temp\4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647.exe
      "C:\Users\Admin\AppData\Local\Temp\4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647.exe"
      2⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Windows\rcmlahvnxjsa.exe
        C:\Windows\rcmlahvnxjsa.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1964
        • C:\Windows\rcmlahvnxjsa.exe
          C:\Windows\rcmlahvnxjsa.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:1680
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1644
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4DEDF8~1.EXE
        3⤵
        • Deletes itself
        PID:296
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1120

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\rcmlahvnxjsa.exe

    Filesize

    340KB

    MD5

    18f7d4a5e3d6f5069ecc4b00f32ef46d

    SHA1

    8aa8f940c6084c3d31c4f813d599725c3c47b309

    SHA256

    4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647

    SHA512

    6f9446c86de8e484d18cacc20b056cd8b7fbb633ad73c7543f42a8d85626eaa94f6ac98a2acc84a4679453cbfe026d55e9226ed0954b10a62a3baa5ea3893095

  • C:\Windows\rcmlahvnxjsa.exe

    Filesize

    340KB

    MD5

    18f7d4a5e3d6f5069ecc4b00f32ef46d

    SHA1

    8aa8f940c6084c3d31c4f813d599725c3c47b309

    SHA256

    4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647

    SHA512

    6f9446c86de8e484d18cacc20b056cd8b7fbb633ad73c7543f42a8d85626eaa94f6ac98a2acc84a4679453cbfe026d55e9226ed0954b10a62a3baa5ea3893095

  • C:\Windows\rcmlahvnxjsa.exe

    Filesize

    340KB

    MD5

    18f7d4a5e3d6f5069ecc4b00f32ef46d

    SHA1

    8aa8f940c6084c3d31c4f813d599725c3c47b309

    SHA256

    4dedf81bfb5b46a1e0684e37518f00f060e6e503dfb7c003d803b852be7ab647

    SHA512

    6f9446c86de8e484d18cacc20b056cd8b7fbb633ad73c7543f42a8d85626eaa94f6ac98a2acc84a4679453cbfe026d55e9226ed0954b10a62a3baa5ea3893095

  • memory/1680-92-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1680-91-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1680-90-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-69-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-70-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-55-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-68-0x0000000074DB1000-0x0000000074DB3000-memory.dmp

    Filesize

    8KB

  • memory/1768-56-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-74-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-58-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-64-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-62-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1768-60-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1908-54-0x0000000000240000-0x0000000000243000-memory.dmp

    Filesize

    12KB

  • memory/1908-67-0x0000000000240000-0x0000000000243000-memory.dmp

    Filesize

    12KB