Overview

overview

10

Static

static

4b7f328bb0...03.exe

windows7_x64

10

4b7f328bb0...03.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    135s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    12-07-2022 09:45

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General

  • Target

    4b7f328bb05d97e371c0b7873e9a7eebad756971970948283c3bf6e46ac61103.exe

  • Size

    360KB

  • MD5

    0b7d136cbc2a52f4a836f99fa3fed5d5

  • SHA1

    a8a501329c2d47c16dc7c31e18b667aafbbd3df1

  • SHA256

    4b7f328bb05d97e371c0b7873e9a7eebad756971970948283c3bf6e46ac61103

  • SHA512

    bc24815c309dc6530c82be0f5dbb2f92fb729b0f85cae3ee415b5e33f0938e16abc9a6e7216063dcc8b3661b3530655e27a00ed03168238988d2f1f25f10cf29

Score
10/10
teslacryptpersistenceransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1819626980-2277161760-1023733287-1000\_RECOVERY_+maylq.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/70D7EC8CF81D2F60 2. http://tes543berda73i48fsdfsd.keratadze.at/70D7EC8CF81D2F60 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/70D7EC8CF81D2F60 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/70D7EC8CF81D2F60 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/70D7EC8CF81D2F60 http://tes543berda73i48fsdfsd.keratadze.at/70D7EC8CF81D2F60 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/70D7EC8CF81D2F60 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/70D7EC8CF81D2F60
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/70D7EC8CF81D2F60

http://tes543berda73i48fsdfsd.keratadze.at/70D7EC8CF81D2F60

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/70D7EC8CF81D2F60

http://xlowfznrg4wf7dli.ONION/70D7EC8CF81D2F60

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 1 IoCs
  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • Drops startup file 3 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
  • 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 Internet Explorer settings 1 TTPs 25 IoCs
    adwarespyware
  • Modifies system certificate store 2 TTPs 6 IoCs
    evasionspywaretrojan
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • System policy modification 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b7f328bb05d97e371c0b7873e9a7eebad756971970948283c3bf6e46ac61103.exe
    "C:\Users\Admin\AppData\Local\Temp\4b7f328bb05d97e371c0b7873e9a7eebad756971970948283c3bf6e46ac61103.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\qoaflouuhpta.exe
      C:\Windows\qoaflouuhpta.exe
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops startup file
      • 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:1484
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1992
      • C:\Windows\SysWOW64\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\RECOVERY.TXT
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:668
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\RECOVERY.HTM
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1364
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1536
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1660
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Windows\QOAFLO~1.EXE
        3⤵
          PID:368
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4B7F32~1.EXE
        2⤵
        • Deletes itself
        PID:1180
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1932
    • C:\Windows\SysWOW64\DllHost.exe
      C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
      1⤵
      • Suspicious use of FindShellTrayWindow
      PID:472

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads

    • C:\Users\Admin\Desktop\RECOVERY.HTM
      Filesize

      11KB

      MD5

      f4baf98711d35c70041e959084230c0a

      SHA1

      f9c258895645ca9db8813ccc5161fe0fbc4fdc79

      SHA256

      43654e724d2b7419a3823219615b60fed29ef1d419bf14a79980db84f142e32e

      SHA512

      d2831389832f75ee7071a3fcc317c64140eeb7fda74c23afb3c5b6768f752c71c8e65cde57eae5ba17271bca269007d62ffa13287281a2a2fb2a78953c3a46ff

      Download Submit

    • C:\Users\Admin\Desktop\RECOVERY.TXT
      Filesize

      1KB

      MD5

      578659d2b8c57b66ed693cc7e858da53

      SHA1

      a670f6fc5339b8342647972d72356481055cc199

      SHA256

      e95c6bf873c82f855c22432b963ef878ca37259dbd7c2c59fd6481f5080f40b0

      SHA512

      89fcb78d08149b76a8670c004cd24ca859bda19f4932e0a1f037dbdb12bb467c99757aa90d51c8ad3dfb1a086b78f2eb5bea730ace3502da146b2887da201333

      Download Submit

    • C:\Users\Admin\Desktop\RECOVERY.png
      Filesize

      62KB

      MD5

      790d5620d67ba9f05765b0d30593b518

      SHA1

      bcd3940597e392c5d18351a01a28ff1be0a692dd

      SHA256

      d3bfe703476e51863f3deb602141b76c5fd5d3b5319ae248ef199e10c36a71b9

      SHA512

      e0745a2154e06e35d3c263a33c37844044e65f52123c6efaf4fb608a31a3b3b901c6a5e25f1acfa5a0c19d0a3f7f830e130ac69af13296173af79ca6d77533f8

      Download Submit

    • C:\Windows\qoaflouuhpta.exe
      Filesize

      360KB

      MD5

      0b7d136cbc2a52f4a836f99fa3fed5d5

      SHA1

      a8a501329c2d47c16dc7c31e18b667aafbbd3df1

      SHA256

      4b7f328bb05d97e371c0b7873e9a7eebad756971970948283c3bf6e46ac61103

      SHA512

      bc24815c309dc6530c82be0f5dbb2f92fb729b0f85cae3ee415b5e33f0938e16abc9a6e7216063dcc8b3661b3530655e27a00ed03168238988d2f1f25f10cf29

      Download Submit

    • C:\Windows\qoaflouuhpta.exe
      Filesize

      360KB

      MD5

      0b7d136cbc2a52f4a836f99fa3fed5d5

      SHA1

      a8a501329c2d47c16dc7c31e18b667aafbbd3df1

      SHA256

      4b7f328bb05d97e371c0b7873e9a7eebad756971970948283c3bf6e46ac61103

      SHA512

      bc24815c309dc6530c82be0f5dbb2f92fb729b0f85cae3ee415b5e33f0938e16abc9a6e7216063dcc8b3661b3530655e27a00ed03168238988d2f1f25f10cf29

      Download Submit

    • memory/368-78-0x0000000000000000-mapping.dmp

      Download

    • memory/668-71-0x0000000000000000-mapping.dmp

      Download

    • memory/1100-54-0x0000000074B51000-0x0000000074B53000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1100-59-0x0000000000300000-0x0000000000385000-memory.dmp

      Filesize

      532KB

      Download

    • memory/1100-55-0x0000000000400000-0x000000000049E000-memory.dmp

      Filesize

      632KB

      Download

    • memory/1180-62-0x0000000000000000-mapping.dmp

      Download

    • memory/1484-64-0x0000000000400000-0x000000000049E000-memory.dmp

      Filesize

      632KB

      Download

    • memory/1484-68-0x0000000001C20000-0x0000000001CA5000-memory.dmp

      Filesize

      532KB

      Download

    • memory/1484-60-0x0000000000000000-mapping.dmp

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    • memory/1660-75-0x0000000000000000-mapping.dmp

      Download

    • memory/1992-70-0x0000000000000000-mapping.dmp

      Download