Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    12/07/2022, 13:17

General

  • Target

    4a6e3bd7acd26d0f34aa8faf112bda87635d5d7add7777d1bc160bd3781a517c.exe

  • Size

    416KB

  • MD5

    6d97decf011100391cefd3d9355b1e8e

  • SHA1

    92c7a7e1d383c0cba6be05dc7230a2814d47ba57

  • SHA256

    4a6e3bd7acd26d0f34aa8faf112bda87635d5d7add7777d1bc160bd3781a517c

  • SHA512

    243e6922a0a6c6d656205a07dd4adeb50362d3d92f929185c5a2c638fc418fce7a70cd856eb1622aac98fe58a8f13e470eeaa2d28537bbe788be1b53b5a2b53a

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2632097139-1792035885-811742494-1000\_RECoVERY_+ustuq.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 RSA4096 More information about the encryption keys using RSA4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA4096 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://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2 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/5C91B0F390133FF2 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/5C91B0F390133FF2
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2

http://xlowfznrg4wf7dli.ONION/5C91B0F390133FF2

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2632097139-1792035885-811742494-1000\_RECoVERY_+ustuq.html

Ransom Note
<html> <style>a { color:green; }.tb { background:white; border-style:solid; border-width:1px; padding:3px; border-color:lime; } .ttl { font-size:13px; color:880000; }</style><body style="background:#33CCFF;"> <center> <div style="text-align:left; font-family:Arial; <!---=0=0=0=0=0 --> font-size:13px; line-height:20px; margin-top:10px; width:800px; background:#F4F4F4; padding:20px; border-style:solid; border-width:5px; border-color:#BABABA;"> <b><font class="ttl"><center><b>NOT YOUR LANGUAGE? USE <a href="https://translate.google.com" target="_blank">Google Translate</a></b></center> What<!------=0=0=0=0=0 --> happened <!------=0=0=0=0=0 --> to your<!------=0=0=0=0=0 --> files?</b></font><br> <font style="font-size:13px;">All <!------=0=0=0=0=0 -->of your files<!------=0=0=0=0=0 --> were <!------=0=0=0=0=0 --> protected by a strong<!------=0=0=0=0=0 --> encr<!---=0=0=0=0=0 -->yption wi<!---=0=0=0=0=0 -->th <!------=0=0=0=0=0 -->RSA4096 <!------=0=0=0=0=0 --> <br> More <!------=0=0=0=0=0 --> information about the <!------=0=0=0=0=0 -->encryption RSA4096 can be<!------=0=0=0=0=0 --> fou<!---=0=0=0=0=0 -->nd <a href=http://en.wikipedia.org/wiki/RSA_(cryptosystem) target="_blank"> http://en.wikipedia.org/wiki/RSA_(cryptosystem) </a><br></font> <br><b><font class="ttl">Wh<!--=0=0=0=0=0 -->at <!------=0=0=0=0=0 --> does th<!--=0=0=0=0=0 -->is mean?</b></font><br><font style="font-size:13px;"> T<!--=0=0=0=0=0 -->his<!------=0=0=0=0=0 --> mea<!--=0=0=0=0=0 -->ns that the <!------=0=0=0=0=0 --> str<!--=0=0=0=0=0 -->ucture and da<!--=0=0=0=0=0 -->ta wi<!--=0=0=0=0=0 -->thin your <!------=0=0=0=0=0 -->files ha<!--=0=0=0=0=0 -->ve be<!--=0=0=0=0=0 -->en<!------=0=0=0=0=0 --> irre<!--=0=0=0=0=0 -->voca<!--=0=0=0=0=0 -->bly changed, you will not be able work wi<!--=0=0=0=0=0 -->th them, read<!------=0=0=0=0=0 --> th<!--=0=0=0=0=0 -->em or see them, <!------=0=0=0=0=0 -->it is the s<!--=0=0=0=0=0 -->ame thing <!------=0=0=0=0=0 -->as los<!--=0=0=0=0=0 -->ing <!------=0=0=0=0=0 -->them for<!--=0=0=0=0=0 -->ever, but with our he<!--=0=0=0=0=0 -->lp, you <!------=0=0=0=0=0 --> can re<!--=0=0=0=0=0 -->st<!--=0=0=0=0=0 -->ore t<!--=0=0=0=0=0 -->hem <br><br><b><font class="ttl"><!------=0=0=0=0=0 -->Ho<!--=0=0=0=0=0 -->w d<!--=0=0=0=0=0 -->id th<!--=0=0=0=0=0 -->is hap<!--=0=0=0=0=0 -->pen?<!------=0=0=0=0=0 --></b></font> <br> <!------=0=0=0=0=0 --> <font style="font-size:13px;"><!------=0=0=0=0=0 --> Espec<!--=0=0=0=0=0 -->ially for y<!--=0=0=0=0=0 -->ou,<!------=0=0=0=0=0 --> on our SER<!--=0=0=0=0=0 -->VER <!------=0=0=0=0=0 -->was gene<!--=0=0=0=0=0 -->rated <!------=0=0=0=0=0 -->the sec<!--=0=0=0=0=0 -->ret k<!--=0=0=0=0=0 -->ey <br>Al<!--=0=0=0=0=0-->l y<!--=0=0=0=0=0-->our <!------=0=0=0=0=0 --> files w<!--=0=0=0=0=0-->ere encry<!--=0=0=0=0=0-->pted with the p<!--=0=0=0=0=0-->ublic k<!--=0=0=0=0=0-->ey, <!------=0=0=0=0=0 --> wh<!--=0=0=0=0=0-->ich has b<!--=0=0=0=0=0-->een <!------=0=0=0=0=0 --> trans<!--=0=0=0=0=0-->ferred to <!------=0=0=0=0=0 -->y<!--=0=0=0=0=0-->our co<!--=0=0=0=0=0-->mputer via <!------=0=0=0=0=0 -->the Inter<!--=0=0=0=0=0-->net.<!--=0=0=0=0=0--><br> <!------=0=0=0=0=0 --> Decr<!--=0=0=0=0=0-->ypting of <!------=0=0=0=0=0 -->YO<!--=0=0=0=0=0-->UR FI<!--=0=0=0=0=0-->LES is <!--=0=0=0=0=0 -->on<!--=0=0=0=0=0 -->ly p<!--=0=0=0=0=0 -->oss<!--=0=0=0=0=0-->ible <!--- -=0=0=0=0=0 -->w<!--=0=0=0=0=0 -->ith the he<!--=0=0=0=0=0-->lp of t<!--=0=0=0=0=0 -->he <!----=0=0=0=0=0 -->pri<!--=0=0=0=0=0-->va<!--=0=0=0=0=0 -->te k<!--=0=0=0=0=0-->ey a<!--=0=0=0=0=0 -->nd <!--=0=0=0=0=0 -->d<!--=0=0=0=0=0 -->ecr<!--=0=0=0=0=0-->ypt p<!--=0=0=0=0=0 -->rog<!--=0=0=0=0=0-->ram <!--=0=0=0=0=0 -->wh<!--=0=0=0=0=0-->ich is on our <!--- -=0=0=0=0=0 -->Sec<!--=0=0=0=0=0-->ret <!--=0=0=0=0=0 -->Ser<!--=0=0=0=0=0-->ver!!! </font><br><br><b><font class="ttl">Wh<!--=0=0=0=0=0-->at do I do?</b></font> <br><font style="font-size:13px;">Alas, if you <!--=0=0=0=0=0 --> do not take <!---=0=0=0=0=0 --> the nece<!--=0=0=0=0=0-->ssary meas<!--=0=0=0=0=0-->ures <!--=0=0=0=0=0-->for the spec<!--=0=0=0=0=0-->ified ti<!--=0=0=0=0=0-->me th<!--=0=0=0=0=0-->en t<!--=0=0=0=0=0-->he co<!--=0=0=0=0=0-->nditions fo<!--=0=0=0=0=0-->r obta<!--=0=0=0=0=0-->ining the priv<!--=0=0=0=0=0-->ate ke<!--=0=0=0=0=0-->y w<!--=0=0=0=0=0-->ill be cha<!--=0=0=0=0=0-->nged<!--- =0=0=0=0=0 --> <br> <!-----=0=0=0=0=0 --> If you really need <!------=0=0=0=0=0 --> your data, <!------=0=0=0=0=0 -->then we suggest you <!------=0=0=0=0=0 --> do not waste<!------=0=0=0=0=0 --> valuable <!------=0=0=0=0=0 --> time searching <!------=0=0=0=0=0 -->for other <!------=0=0=0=0=0 --> solutions <!------=0=0=0=0=0 -->becausen <!----=0=0=0=0=0 --> they do not exist.</font><br><br> <!----=0=0=0=0=0 --><div class="tb" style="color:#880000; font-size:13px; border-width:3px;">For more specific instructions, please<!------=0=0=0=0=0 --> visit your <!------=0=0=0=0=0 --> personal <!------=0=0=0=0=0 -->home page,<!------=0=0=0=0=0 --> there are<!------=0=0=0=0=0 --> a few <!------=0=0=0=0=0 -->different <!------=0=0=0=0=0 -->addresses<!------=0=0=0=0=0 --> pointing to <!------=0=0=0=0=0 --> your page<!------=0=0=0=0=0 --> below:<b><hr> <!---9=9=9=9=9=9=9=9---> 1 - <a href=http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2 target="_blank">http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2</a> <br> <!------9=9=9=9=9=9=9=9 --> 2 - <a href=http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2 target="_blank">http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2</a> <br> <!------9=9=9=9=9=9=9=9 --> 3 - <a href=http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2 target="_blank">http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2</a> <br> <!------9=9=9=9=9=9=9=9 --></div><br><div class="tb" style="font-size:13px; border-color:#880000;"><b>If for some reasons the <!-----9=9=9=9=9=9=9=9 --> addresses are not available, <!------9=9=9=9=9=9=9=9 --> follow these steps:</b> <hr> 1 - <!------9=9=9=9=9=9=9=9 --> Download and <!------9=9=9=9=9=9=9=9 --> install tor-browser: <a href=http://www.torproject.org/projects/torbrowser.html.en target="_blank">http://www.torproject.org/projects/torbrowser.html.en</a><br> 2 - <!---9=9=9=9=9=9=9=9 --> Af<!---9=9=9=9=9=9=9=9--->ter a<!---9=9=9=9=9=9=9=9---> succe<!---9=9=9=9=9=9=9=9--->ssful<!------9=9=9=9=9=9=9=9 --> instal<!---9=9=9=9=9=9=9=9--->lation, run the br<!---9=9=9=9=9=9=9=9--->owser and w<!---9=9=9=9=9=9=9=9--->ait for initi<!---9=9=9=9=9=9=9=9--->alization.<br> 3 - <!--- 9=9=9=9=9=9=9=9 --> Ty<!---9=9=9=9=9=9=9=9--->pe<!-- 9=9=9=9=9=9=9=9 --> in<!-- 9=9=9=9=9=9=9=9 --> the t<!---9=9=9=9=9=9=9=9--->or-bro<!---9=9=9=9=9=9=9=9--->wser<!-- 9=9=9=9=9=9=9=9 --> add<!---9=9=9=9=9=9=9=9--->ress<!-- 9=9=9=9=9=9=9=9 --> bar: <font style="font-weight:bold; color:#009977;"><!-- 9=9=9=9=9=9=9=9 -->xlowfznrg4wf7dli.onion/5C91B0F390133FF2<!-- 9=9=9=9=9=9=9=9 --></font><!-- 9=9=9=9=9=9=9=9 --><br> 4 - <!--- 9=9=9=9=9=9=9=9 --> Fol<!---9=9=9=9=9=9=9=9--->low the instr<!---9=9=9=9=9=9=9=9--->uctions <!-- 9=9=9=9=9=9=9=9 --> on the site.</div><br><br><b>!!! IMPO<!---9=9=9=9=9=9=9=9--->RTANT INFO<!---9=9=9=9=9=9=9=9--->RMATION:</b><br> <!-----9=9=9=9=9=9=9=9 --><div class="tb" style="width:790px;"><!-----9=9=9=9=9=9=9=9 --> Yo<!---9=9=9=9=9=9=9=9--->ur Pers<!---9=9=9=9=9=9=9=9--->onal PAGES<b>: <br> <a href=http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2 target="_blank">http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5C91B0F390133FF2</a> <br><a href=http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2 target="_blank">http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5C91B0F390133FF2</a> <br> <!-----9=9=9=9=9=9=9=9 --><a href=http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2 target="_blank">http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5C91B0F390133FF2</a> <br> <!-----9=9=9=9=9=9=9=9 --> Your <!------9=9=9=9=9=9=9=9 --> Personal TOR-Browser<!-----9=9=9=9=9=9=9=9 --> page : <!-----9=9=9=9=9=9=9=9 --><font style="font-weight:bold; color:#009977;"><!-- 9=9=9=9=9=9=9=9 -->xlowfznrg4wf7dli.onion/5C91B0F390133FF2<!-- 9=9=9=9=9=9=9=9 --></font><br> <!-----9=9=9=9=9=9=9=9 --> Your personal <!------9=9=9=9=9=9=9=9 --> ID <!-----9=9=9=9=9=9=9=9 --> (if you open <!------9=9=9=9=9=9=9=9 --> the site directly): <!-----9=9=9=9=9=9=9=9 --> <font style="font-weight:bold; color:#770000;">5C91B0F390133FF2</font><br> </div></div></center></body></html>

Signatures

  • TeslaCrypt, AlphaCrypt

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

  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Adds Run key to start application 2 TTPs 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 8 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a6e3bd7acd26d0f34aa8faf112bda87635d5d7add7777d1bc160bd3781a517c.exe
    "C:\Users\Admin\AppData\Local\Temp\4a6e3bd7acd26d0f34aa8faf112bda87635d5d7add7777d1bc160bd3781a517c.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Windows\fntgvkddsmrr.exe
      C:\Windows\fntgvkddsmrr.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • 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:2076
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4060
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4A6E3B~1.EXE
      2⤵
        PID:2552
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2136

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\fntgvkddsmrr.exe

      Filesize

      416KB

      MD5

      6d97decf011100391cefd3d9355b1e8e

      SHA1

      92c7a7e1d383c0cba6be05dc7230a2814d47ba57

      SHA256

      4a6e3bd7acd26d0f34aa8faf112bda87635d5d7add7777d1bc160bd3781a517c

      SHA512

      243e6922a0a6c6d656205a07dd4adeb50362d3d92f929185c5a2c638fc418fce7a70cd856eb1622aac98fe58a8f13e470eeaa2d28537bbe788be1b53b5a2b53a

    • C:\Windows\fntgvkddsmrr.exe

      Filesize

      416KB

      MD5

      6d97decf011100391cefd3d9355b1e8e

      SHA1

      92c7a7e1d383c0cba6be05dc7230a2814d47ba57

      SHA256

      4a6e3bd7acd26d0f34aa8faf112bda87635d5d7add7777d1bc160bd3781a517c

      SHA512

      243e6922a0a6c6d656205a07dd4adeb50362d3d92f929185c5a2c638fc418fce7a70cd856eb1622aac98fe58a8f13e470eeaa2d28537bbe788be1b53b5a2b53a

    • memory/2076-144-0x0000000002150000-0x00000000021D4000-memory.dmp

      Filesize

      528KB

    • memory/2364-130-0x0000000002280000-0x0000000002304000-memory.dmp

      Filesize

      528KB

    • memory/2364-131-0x0000000000400000-0x00000000004AB000-memory.dmp

      Filesize

      684KB

    • memory/2364-139-0x0000000002280000-0x0000000002304000-memory.dmp

      Filesize

      528KB