Overview

overview

10

Static

static

mavphmkygcay.exe

windows7_x64

10

mavphmkygcay.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    168s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-06-2022 02:46

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General

  • Target

    mavphmkygcay.exe

  • Size

    312KB

  • MD5

    cb5515d0d61ed8bb1604b7b61250d8ef

  • SHA1

    e879872fef8ca8a99acdfc17dfe4f80fbad37759

  • SHA256

    5d5d5ca94886962ef0703f8bafa57ce7e933617af64a86dc98cb0e5252728944

  • SHA512

    bb000a4554c77e45de10445ae153b99afd011c57780bc3a59d2a9c1243fb0dcb64c567ca5c41d88c35ae3374dea5470e235e164b78a27fbb52166e7d6f4ffc57

Score
10/10
teslacryptpersistenceransomwaresuricata

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3751123196-3323558407-1869646069-1000\_ReCoVeRy_+jsepj.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://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF 2 - http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF 3 - http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF 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/7E7C3D137A1521BF 4 - Follow the instructions on the site IMPORTANT INFORMATION Your personal pages http://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF Your personal page Tor-Browser xlowfznrg4wf7dli.ONION/7E7C3D137A1521BF
URLs

http://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF

http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF

http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF

http://xlowfznrg4wf7dli.ONION/7E7C3D137A1521BF

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3751123196-3323558407-1869646069-1000\_ReCoVeRy_+jsepj.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; <!---4231213423142134231421342341234 --> 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<!------4231213423142134231421342341234 --> happened <!------4231213423142134231421342341234 --> to your<!------4231213423142134231421342341234 --> files?</b></font><br> <font style="font-size:13px;">All <!------4231213423142134231421342341234 -->of your files<!------4231213423142134231421342341234 --> were <!------4231213423142134231421342341234 --> protected by a strong<!------4231213423142134231421342341234 --> encr<!---4231213423142134231421342341234 -->yption wi<!---4231213423142134231421342341234 -->th <!------4231213423142134231421342341234 -->RSA4096 <!------4231213423142134231421342341234 --> <br> More <!------4231213423142134231421342341234 --> information about the <!------4231213423142134231421342341234 -->encryption RSA4096 can be<!------4231213423142134231421342341234 --> fou<!---4231213423142134231421342341234 -->nd <a href= http://en.wikipedia.org/wiki/RSA_(cryptosystem) target="_blank"> htt<!--4231213423142134231421342341234 -->ps:<!--4231213423142134231421342341234 -->//en<!--4231213423142134231421342341234 -->.w<!--4231213423142134231421342341234 -->ikipedia<!--4231213423142134231421342341234 -->.<!--4231213423142134231421342341234 -->org/wiki/RSA_(cry<!--4231213423142134231421342341234 -->ptosystem) </a><br></font> <br><b><font class="ttl">Wh<!--4231213423142134231421342341234 -->at <!------4231213423142134231421342341234 --> does th<!--4231213423142134231421342341234 -->is mean?</b></font><br><font style="font-size:13px;"> T<!--4231213423142134231421342341234 -->his<!------4231213423142134231421342341234 --> mea<!--4231213423142134231421342341234 -->ns that the <!------4231213423142134231421342341234 --> str<!--4231213423142134231421342341234 -->ucture and da<!--4231213423142134231421342341234 -->ta wi<!--4231213423142134231421342341234 -->thin your <!------4231213423142134231421342341234 -->files ha<!--4231213423142134231421342341234 -->ve be<!--4231213423142134231421342341234 -->en<!------4231213423142134231421342341234 --> irre<!--4231213423142134231421342341234 -->voca<!--4231213423142134231421342341234 -->bly changed, you will not be able work wi<!--4231213423142134231421342341234 -->th them, read<!------4231213423142134231421342341234 --> th<!--4231213423142134231421342341234 -->em or see them, <!------4231213423142134231421342341234 -->it is the s<!--4231213423142134231421342341234 -->ame thing <!------4231213423142134231421342341234 -->as los<!--4231213423142134231421342341234 -->ing <!------4231213423142134231421342341234 -->them for<!--4231213423142134231421342341234 -->ever, but with our he<!--4231213423142134231421342341234 -->lp, you <!------4231213423142134231421342341234 --> can re<!--4231213423142134231421342341234 -->st<!--4231213423142134231421342341234 -->ore t<!--4231213423142134231421342341234 -->hem <br><br><b><font class="ttl"><!------4231213423142134231421342341234 -->Ho<!--4231213423142134231421342341234 -->w d<!--4231213423142134231421342341234 -->id th<!--4231213423142134231421342341234 -->is hap<!--4231213423142134231421342341234 -->pen?<!------4231213423142134231421342341234 --></b></font> <br> <!------4231213423142134231421342341234 --> <font style="font-size:13px;"><!------4231213423142134231421342341234 --> Espec<!--4231213423142134231421342341234 -->ially for y<!--4231213423142134231421342341234 -->ou,<!------4231213423142134231421342341234 --> on our SER<!--4231213423142134231421342341234 -->VER <!------4231213423142134231421342341234 -->was gene<!--4231213423142134231421342341234 -->rated <!------4231213423142134231421342341234 -->the sec<!--4231213423142134231421342341234 -->ret k<!--4231213423142134231421342341234 -->ey <br>Al<!--4231213423142134231421342341234-->l y<!--4231213423142134231421342341234-->our <!------4231213423142134231421342341234 --> files w<!--4231213423142134231421342341234-->ere encry<!--4231213423142134231421342341234-->pted with the p<!--4231213423142134231421342341234-->ublic k<!--4231213423142134231421342341234-->ey, <!------4231213423142134231421342341234 --> wh<!--4231213423142134231421342341234-->ich has b<!--4231213423142134231421342341234-->een <!------4231213423142134231421342341234 --> trans<!--4231213423142134231421342341234-->ferred to <!------4231213423142134231421342341234 -->y<!--4231213423142134231421342341234-->our co<!--4231213423142134231421342341234-->mputer via <!------4231213423142134231421342341234 -->the Inter<!--4231213423142134231421342341234-->net.<!--4231213423142134231421342341234--><br> <!------4231213423142134231421342341234 --> Decr<!--4231213423142134231421342341234-->ypting of <!------4231213423142134231421342341234 -->YO<!--4231213423142134231421342341234-->UR FI<!--4231213423142134231421342341234-->LES is <!--4231213423142134231421342341234 -->on<!--4231213423142134231421342341234 -->ly p<!--4231213423142134231421342341234 -->oss<!--4231213423142134231421342341234-->ible <!--- -4231213423142134231421342341234 -->w<!--4231213423142134231421342341234 -->ith the he<!--4231213423142134231421342341234-->lp of t<!--4231213423142134231421342341234 -->he <!----4231213423142134231421342341234 -->pri<!--4231213423142134231421342341234-->va<!--4231213423142134231421342341234 -->te k<!--4231213423142134231421342341234-->ey a<!--4231213423142134231421342341234 -->nd <!--4231213423142134231421342341234 -->d<!--4231213423142134231421342341234 -->ecr<!--4231213423142134231421342341234-->ypt p<!--4231213423142134231421342341234 -->rog<!--4231213423142134231421342341234-->ram <!--4231213423142134231421342341234 -->wh<!--4231213423142134231421342341234-->ich is on our <!--- -4231213423142134231421342341234 -->Sec<!--4231213423142134231421342341234-->ret <!--4231213423142134231421342341234 -->Ser<!--4231213423142134231421342341234-->ver!!! </font><br><br><b><font class="ttl">Wh<!--4231213423142134231421342341234-->at do I do?</b></font> <br><font style="font-size:13px;">Alas, if you <!--4231213423142134231421342341234 --> do not take <!---4231213423142134231421342341234 --> the nece<!--4231213423142134231421342341234-->ssary meas<!--4231213423142134231421342341234-->ures <!--4231213423142134231421342341234-->for the spec<!--4231213423142134231421342341234-->ified ti<!--4231213423142134231421342341234-->me th<!--4231213423142134231421342341234-->en t<!--4231213423142134231421342341234-->he co<!--4231213423142134231421342341234-->nditions fo<!--4231213423142134231421342341234-->r obta<!--4231213423142134231421342341234-->ining the priv<!--4231213423142134231421342341234-->ate ke<!--4231213423142134231421342341234-->y w<!--4231213423142134231421342341234-->ill be cha<!--4231213423142134231421342341234-->nged<!--- 4231213423142134231421342341234 --> <br> <!-----4231213423142134231421342341234 --> If you really need <!------4231213423142134231421342341234 --> your data, <!------4231213423142134231421342341234 -->then we suggest you <!------4231213423142134231421342341234 --> do not waste<!------4231213423142134231421342341234 --> valuable <!------4231213423142134231421342341234 --> time searching <!------4231213423142134231421342341234 -->for other <!------4231213423142134231421342341234 --> solutions <!------4231213423142134231421342341234 -->becausen <!----4231213423142134231421342341234 --> they do not exist.</font><br><br> <!----4231213423142134231421342341234 --><div class="tb" style="color:#880000; font-size:13px; border-width:3px;">For more specific instructions, please<!------4231213423142134231421342341234 --> visit your <!------4231213423142134231421342341234 --> personal <!------4231213423142134231421342341234 -->home page,<!------4231213423142134231421342341234 --> there are<!------4231213423142134231421342341234 --> a few <!------4231213423142134231421342341234 -->different <!------4231213423142134231421342341234 -->addresses<!------4231213423142134231421342341234 --> pointing to <!------4231213423142134231421342341234 --> your page<!------4231213423142134231421342341234 --> below:<b><hr> <!---2+1=3---> 1 - <a href=http://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF target="_blank">http://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF</a> <br> <!------2+1=3 --> 2 - <a href=http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF target="_blank">http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF</a> <br> <!------2+1=3 --> 3 - <a href=http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF target="_blank">http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF</a> <br> <!------2+1=3 --></div><br><div class="tb" style="font-size:13px; border-color:#880000;"><b>If for some reasons the <!-----2+1=3 --> addresses are not available, <!------2+1=3 --> follow these steps:</b> <hr> 1 - <!------2+1=3 --> Download and <!------2+1=3 --> 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 - <!---2+1=3 --> Af<!---2+1=3--->ter a<!---2+1=3---> succe<!---2+1=3--->ssful<!------2+1=3 --> instal<!---2+1=3--->lation, run the br<!---2+1=3--->owser and w<!---2+1=3--->ait for initi<!---2+1=3--->alization.<br> 3 - <!--- 2+1=3 --> Ty<!---2+1=3--->pe<!-- 2+1=3 --> in<!-- 2+1=3 --> the t<!---2+1=3--->or-bro<!---2+1=3--->wser<!-- 2+1=3 --> add<!---2+1=3--->ress<!-- 2+1=3 --> bar: <font style="font-weight:bold; color:#009977;"><!-- 2+1=3 -->xlowfznrg4wf7dli.onion/7E7C3D137A1521BF<!-- 2+1=3 --></font><!-- 2+1=3 --><br> 4 - <!--- 2+1=3 --> Fol<!---2+1=3--->low the instr<!---2+1=3--->uctions <!-- 2+1=3 --> on the site.</div><br><br><b>!!! IMPO<!---2+1=3--->RTANT INFO<!---2+1=3--->RMATION:</b><br> <!-----2+1=3 --><div class="tb" style="width:790px;"><!-----2+1=3 --> Yo<!---2+1=3--->ur Pers<!---2+1=3--->onal PAGES<b>: <br> <a href=http://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF target="_blank">http://po4dbsjbneljhrlbvaueqrgveatv.bonmawp.at/7E7C3D137A1521BF</a> <br><a href=http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF target="_blank">http://u54bbnhf354fbkh254tbkhjbgy8258gnkwerg.tahaplap.com/7E7C3D137A1521BF</a> <br> <!-----2+1=3 --><a href=http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF target="_blank">http://w6bfg4hahn5bfnlsafgchkvg5fwsfvrt.hareuna.at/7E7C3D137A1521BF</a> <br> <!-----2+1=3 --> Your <!------2+1=3 --> Personal TOR-Browser<!-----2+1=3 --> page : <!-----2+1=3 --><font style="font-weight:bold; color:#009977;"><!-- 2+1=3 -->xlowfznrg4wf7dli.onion/7E7C3D137A1521BF<!-- 2+1=3 --></font><br> <!-----2+1=3 --> Your personal <!------2+1=3 --> ID <!-----2+1=3 --> (if you open <!------2+1=3 --> the site directly): <!-----2+1=3 --> <font style="font-weight:bold; color:#770000;">7E7C3D137A1521BF</font><br> </div></div></center></body></html>

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.

  • 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\mavphmkygcay.exe
    "C:\Users\Admin\AppData\Local\Temp\mavphmkygcay.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\mavphmkygcay.exe
      "C:\Users\Admin\AppData\Local\Temp\mavphmkygcay.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3780
      • C:\Windows\rwebkiwipwfp.exe
        C:\Windows\rwebkiwipwfp.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4024
        • C:\Windows\rwebkiwipwfp.exe
          C:\Windows\rwebkiwipwfp.exe
          4⤵
          • 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:1676
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1816
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\MAVPHM~1.EXE
        3⤵
          PID:4648
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3144

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\rwebkiwipwfp.exe
      Filesize

      312KB

      MD5

      cb5515d0d61ed8bb1604b7b61250d8ef

      SHA1

      e879872fef8ca8a99acdfc17dfe4f80fbad37759

      SHA256

      5d5d5ca94886962ef0703f8bafa57ce7e933617af64a86dc98cb0e5252728944

      SHA512

      bb000a4554c77e45de10445ae153b99afd011c57780bc3a59d2a9c1243fb0dcb64c567ca5c41d88c35ae3374dea5470e235e164b78a27fbb52166e7d6f4ffc57

      Download Submit

    • C:\Windows\rwebkiwipwfp.exe
      Filesize

      312KB

      MD5

      cb5515d0d61ed8bb1604b7b61250d8ef

      SHA1

      e879872fef8ca8a99acdfc17dfe4f80fbad37759

      SHA256

      5d5d5ca94886962ef0703f8bafa57ce7e933617af64a86dc98cb0e5252728944

      SHA512

      bb000a4554c77e45de10445ae153b99afd011c57780bc3a59d2a9c1243fb0dcb64c567ca5c41d88c35ae3374dea5470e235e164b78a27fbb52166e7d6f4ffc57

      Download Submit

    • C:\Windows\rwebkiwipwfp.exe
      Filesize

      312KB

      MD5

      cb5515d0d61ed8bb1604b7b61250d8ef

      SHA1

      e879872fef8ca8a99acdfc17dfe4f80fbad37759

      SHA256

      5d5d5ca94886962ef0703f8bafa57ce7e933617af64a86dc98cb0e5252728944

      SHA512

      bb000a4554c77e45de10445ae153b99afd011c57780bc3a59d2a9c1243fb0dcb64c567ca5c41d88c35ae3374dea5470e235e164b78a27fbb52166e7d6f4ffc57

      Download Submit

    • memory/1676-150-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/1676-149-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/1676-147-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/1676-148-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/1676-144-0x0000000000000000-mapping.dmp

      Download

    • memory/1816-151-0x0000000000000000-mapping.dmp

      Download

    • memory/2932-135-0x0000000000A70000-0x0000000000A74000-memory.dmp

      Filesize

      16KB

      Download

    • memory/2932-130-0x0000000000A70000-0x0000000000A74000-memory.dmp

      Filesize

      16KB

      Download

    • memory/2932-131-0x0000000000A70000-0x0000000000A74000-memory.dmp

      Filesize

      16KB

      Download

    • memory/3780-140-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/3780-143-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/3780-136-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/3780-134-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/3780-133-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

      Download

    • memory/3780-132-0x0000000000000000-mapping.dmp

      Download

    • memory/4024-141-0x00000000006F0000-0x00000000006F4000-memory.dmp

      Filesize

      16KB

      Download

    • memory/4024-137-0x0000000000000000-mapping.dmp

      Download

    • memory/4648-142-0x0000000000000000-mapping.dmp

      Download