Overview

overview

10

Static

static

4d23a9ea38...d8.exe

windows7_x64

10

4d23a9ea38...d8.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12-07-2022 03:55

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General

  • Target

    4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8.exe

  • Size

    371KB

  • MD5

    2c5ed4b464979c52cc09368c97604f38

  • SHA1

    2db032be1a52a744190c3c8814f35977362ed45b

  • SHA256

    4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8

  • SHA512

    d4b74607ed95b12868bcfddf2d1ec26fd6df7a13f59c6a200b6fcdadbfe3fbb3c7dbd09150fe8bd7129c87a7fac2dfe1fad26f9cbf13cec5de0f670b49e1a195

Score
10/10
teslacryptpersistenceransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1809750270-3141839489-3074374771-1000\_RECoVERY_+ovhrw.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://yyre45dbvn2nhbefbmh.begumvelic.at/65B5E7114134A72C 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/65B5E7114134A72C 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/65B5E7114134A72C 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/65B5E7114134A72C 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/65B5E7114134A72C http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/65B5E7114134A72C http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/65B5E7114134A72C *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/65B5E7114134A72C
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/65B5E7114134A72C

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/65B5E7114134A72C

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/65B5E7114134A72C

http://xlowfznrg4wf7dli.ONION/65B5E7114134A72C

Signatures

  • TeslaCrypt, AlphaCrypt

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

    ransomwareteslacrypt
  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 6 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
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8.exe
    "C:\Users\Admin\AppData\Local\Temp\4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2708
    • C:\Users\Admin\AppData\Local\Temp\4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8.exe
      "C:\Users\Admin\AppData\Local\Temp\4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:404
      • C:\Windows\ljkvqbsjwplr.exe
        C:\Windows\ljkvqbsjwplr.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:244
        • C:\Windows\ljkvqbsjwplr.exe
          C:\Windows\ljkvqbsjwplr.exe
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Drops startup file
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:5052
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3456
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4D23A9~1.EXE
        3⤵
          PID:1540
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1816

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\ljkvqbsjwplr.exe
      Filesize

      371KB

      MD5

      2c5ed4b464979c52cc09368c97604f38

      SHA1

      2db032be1a52a744190c3c8814f35977362ed45b

      SHA256

      4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8

      SHA512

      d4b74607ed95b12868bcfddf2d1ec26fd6df7a13f59c6a200b6fcdadbfe3fbb3c7dbd09150fe8bd7129c87a7fac2dfe1fad26f9cbf13cec5de0f670b49e1a195

      Download Submit

    • C:\Windows\ljkvqbsjwplr.exe
      Filesize

      371KB

      MD5

      2c5ed4b464979c52cc09368c97604f38

      SHA1

      2db032be1a52a744190c3c8814f35977362ed45b

      SHA256

      4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8

      SHA512

      d4b74607ed95b12868bcfddf2d1ec26fd6df7a13f59c6a200b6fcdadbfe3fbb3c7dbd09150fe8bd7129c87a7fac2dfe1fad26f9cbf13cec5de0f670b49e1a195

      Download Submit

    • C:\Windows\ljkvqbsjwplr.exe
      Filesize

      371KB

      MD5

      2c5ed4b464979c52cc09368c97604f38

      SHA1

      2db032be1a52a744190c3c8814f35977362ed45b

      SHA256

      4d23a9ea3868bbc64028ead54549f67d78ffbaebe823892b30f5f342a470f6d8

      SHA512

      d4b74607ed95b12868bcfddf2d1ec26fd6df7a13f59c6a200b6fcdadbfe3fbb3c7dbd09150fe8bd7129c87a7fac2dfe1fad26f9cbf13cec5de0f670b49e1a195

      Download Submit

    • memory/244-137-0x0000000000000000-mapping.dmp

      Download

    • memory/404-141-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/404-131-0x0000000000000000-mapping.dmp

      Download

    • memory/404-132-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/404-134-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/404-135-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/404-136-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/1540-140-0x0000000000000000-mapping.dmp

      Download

    • memory/2708-133-0x0000000000B20000-0x0000000000B23000-memory.dmp

      Filesize

      12KB

      Download

    • memory/2708-130-0x0000000000B20000-0x0000000000B23000-memory.dmp

      Filesize

      12KB

      Download

    • memory/3456-147-0x0000000000000000-mapping.dmp

      Download

    • memory/5052-142-0x0000000000000000-mapping.dmp

      Download

    • memory/5052-145-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/5052-146-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/5052-148-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/5052-149-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download