Overview

overview

10

Static

static

51891bb834...cf.exe

windows7-x64

10

51891bb834...cf.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    139s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • resource tags

    arch:x64arch:x86image:win7-20220414-enlocale:en-usos:windows7-x64system
  • submitted
    18/07/2022, 14:35

Sharing

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General

  • Target

    51891bb83422eeeb7873bc94657fff21cece16419e0ceed67a25b318b33302cf.exe

  • Size

    424KB

  • MD5

    3dd36cf8bf728d5b1810c99042fbe1c5

  • SHA1

    a053513f4baacbe8cf8c9d637a19a5a08a3300ea

  • SHA256

    51891bb83422eeeb7873bc94657fff21cece16419e0ceed67a25b318b33302cf

  • SHA512

    17487df6e4c8796eff4371fb9205fc63e40ec9d481226089e7170b467f25bb96803c30f196b5a24f2a0730b0bd7915f68dbf98da5befc9bdfb4caaa9340ecec2

Score
10/10
teslacryptpersistenceransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1083475884-596052423-1669053738-1000\_RECoVERY_+amtgr.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/70CFC49FC3805AF4 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/70CFC49FC3805AF4 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/70CFC49FC3805AF4 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/70CFC49FC3805AF4 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/70CFC49FC3805AF4 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/70CFC49FC3805AF4 http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/70CFC49FC3805AF4 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/70CFC49FC3805AF4
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/70CFC49FC3805AF4

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/70CFC49FC3805AF4

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/70CFC49FC3805AF4

http://xlowfznrg4wf7dli.ONION/70CFC49FC3805AF4

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 4 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 31 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\51891bb83422eeeb7873bc94657fff21cece16419e0ceed67a25b318b33302cf.exe
    "C:\Users\Admin\AppData\Local\Temp\51891bb83422eeeb7873bc94657fff21cece16419e0ceed67a25b318b33302cf.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\esravoqixwht.exe
      C:\Windows\esravoqixwht.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:1444
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1752
      • 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:1084
      • 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:1328
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1328 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:216
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:912
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Windows\ESRAVO~1.EXE
        3⤵
          PID:1248
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\51891B~1.EXE
        2⤵
        • Deletes itself
        PID:840
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:828
    • C:\Windows\SysWOW64\DllHost.exe
      C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
      1⤵
      • Suspicious use of FindShellTrayWindow
      PID:1176

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads

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

      11KB

      MD5

      ab976d2d54ed8435811f7769b594ae95

      SHA1

      fbf517c554c14f759adcbae71978b63eb2af89b7

      SHA256

      901f0365dbcc38d352d92744553c706bbabee6bd7b1b44f38e0ac4286c4769a6

      SHA512

      8f34d9ff7240b1d0157bbec95400cef9d911c9bedbf439f49cf2cf2c19a9db9ef571e2b18ab8875d718388285176a7614c646f8bab0168f275eea74837b75111

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

      1KB

      MD5

      17bbf7ed5bb14d30f95f6ecc78feb907

      SHA1

      65f891e60fda9de58b966bcc4ac2da251faf28f4

      SHA256

      c8b11186d645d41e141f10a68435c424494969ec06d974cb01cb748a20a156f8

      SHA512

      42ca13d9604aac0bc7de2bd825f04e24227dbe6619af028c527f61971544b419a23ccdf57e36eda82be73fe3b8d88d7eb832f03472836e4d6c490b5af4a01153

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

      63KB

      MD5

      6681689ca72fba523e2b45196c44b88f

      SHA1

      bfa658ea5244b636202cd17281c225735368c4f4

      SHA256

      ae72094c6df0413fe48e899758b0b899d7b392e28fb97c156fd4d337563ee6c8

      SHA512

      5abbd0c20648c071be4c7a31bb5dedfc5770900ee16ac104714bf0feb2b29e9697ccf5fe35c6cd8f0e5007ad72b979cd5265cfb06c96f38728721ba3b9642031

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    • C:\Windows\esravoqixwht.exe
      Filesize

      424KB

      MD5

      3dd36cf8bf728d5b1810c99042fbe1c5

      SHA1

      a053513f4baacbe8cf8c9d637a19a5a08a3300ea

      SHA256

      51891bb83422eeeb7873bc94657fff21cece16419e0ceed67a25b318b33302cf

      SHA512

      17487df6e4c8796eff4371fb9205fc63e40ec9d481226089e7170b467f25bb96803c30f196b5a24f2a0730b0bd7915f68dbf98da5befc9bdfb4caaa9340ecec2

      Download Submit

    • C:\Windows\esravoqixwht.exe
      Filesize

      424KB

      MD5

      3dd36cf8bf728d5b1810c99042fbe1c5

      SHA1

      a053513f4baacbe8cf8c9d637a19a5a08a3300ea

      SHA256

      51891bb83422eeeb7873bc94657fff21cece16419e0ceed67a25b318b33302cf

      SHA512

      17487df6e4c8796eff4371fb9205fc63e40ec9d481226089e7170b467f25bb96803c30f196b5a24f2a0730b0bd7915f68dbf98da5befc9bdfb4caaa9340ecec2

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    • memory/1444-64-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

      Download

    • memory/1444-68-0x00000000004B0000-0x0000000000535000-memory.dmp

      Filesize

      532KB

      Download

    • memory/2044-54-0x0000000075841000-0x0000000075843000-memory.dmp

      Filesize

      8KB

      Download

    • memory/2044-59-0x0000000000580000-0x0000000000605000-memory.dmp

      Filesize

      532KB

      Download

    • memory/2044-55-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

      Download