Analysis

  • max time kernel
    139s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-04-2023 16:18

General

  • Target

    MCSP89.exe

  • Size

    182KB

  • MD5

    8203a583c5eef23e5fa7fa9d1506d430

  • SHA1

    a03db11124592b36137f3603afdba5e3c999aae9

  • SHA256

    b78469fb8eff53d82081bdcb0dbb3436f239b8ca6ef7fd800ce5ba7e098c256f

  • SHA512

    54f1f807fc50dd8f111173d2bcea87fec7e477264356395c5d21f1888264a841cf50ad5acad40912d1230ee690cc92c51938f35fd104206d62c9ee9d11010df2

  • SSDEEP

    3072:4LFrb30BRtBZZg+i22yyTsnAdu5tjgn/RRKwkwvMT3QQmJQOZt7UaN:qJ0BXSchyTsnXToKJw4gQeQutFN

Score
10/10

Malware Config

Extracted

Path

C:\Recovery\58t3n7-readme.txt

Ransom Note
---=== Welcome. Again. ===--- STACKSFINANCE.COM.AU You have 5 days to pay or all the data of your customers will be in the public domain and sold! [+] Whats Happen? [+] Your files are encrypted, and currently unavailable. You can check it: all files on your system has extension 58t3n7. By the way, everything is possible to recover (restore), but you need to follow our instructions. Otherwise, you cant return your data (NEVER). [+] What guarantees? [+] Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will not cooperate with us. Its not in our interests. To check the ability of returning files, You should go to our website. There you can decrypt one file for free. That is our guarantee. If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause just we have the private key. In practice - time is much more valuable than money. [+] How to get access on website? [+] You have two ways: 1) [Recommended] Using a TOR browser! a) Download and install TOR browser from this site: https://torproject.org/ b) Open our website: http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/219115FA40E52D80 2) If TOR blocked in your country, try to use VPN! But you can use our secondary website. For this: a) Open your any browser (Chrome, Firefox, Opera, IE, Edge) b) Open our secondary website: http://decryptor.cc/219115FA40E52D80 Warning: secondary website can be blocked, thats why first variant much better and more available. When you open our website, put the following data in the input form: Key: 1MAlEBPHKrHNfOTiCQnMsXxDGasaBmjLeRs3D+Ec6yUARhmFUoGuyd2hoCZi3k5X 08THBxU1NbZEKjn5jAk//jdfxeKYa9mPgoYNogmF5EFDMJS43zJTOK5wQyDjfE+8 doCFSyKbH110C/pRGwtiAgbVkEUd0W5SBissVSVWJhOszE1aSKsVj+yKpCfeTpWJ k1yyLXOSalJwf2Tg/AlQ9/c80zuK4rTBNvsPqM4ir57WPnNbgWjifEcbvNFkuSzA 0+5WZqRS+uUnaprmFq25FOPgAwG6BeZIbytFHmccPcr+jmkuHSXgzR/pFaGFbZ9b Nr4kRR2S2dnGCsu+AGiJt1Rs36o9tzTy9s4+N01sMiv3kFhw+mYPnBqmKBZ+ed/L zLzIAvMxikSPhjPe7UZVsM0q5HD0fVZTb8TQP4L8XdeKw/nzVJYIrHzjMoBo1Jvw 49rOrE4UtzAwCGWS6i9dCCvMqWHNWG/punDKWx/uruAlkatRI1wjDq7OeaAEjulG Z3jMzZUPaLuqDbPkK9ig9iEzCG2nCyPdLmsxis6pBb0Wvvo3X3+W2J98AZ+/zemO JGZx8zWn0JG04toFQ/XpBDzxxp9ooy3IWO7Cwd4TY7aZYefWKij15oHFg22k/qFG XN+DrZCxrxA9WiS525QTtrPdGvYB+938Aaw6lwEynYwZaSYfiPMoMyKpR/ZSABrf s/zVtX/MEeRDIAysDWTiuLn57gd197lMcHFIStSyQ1gk4I5N6X+XmIapno/ozwdZ gZ3emPfEnR9xzmAu+qiRC01zinczTWWZGouWc6lxdApxJmJ/7XsULgbITtAqxtBV 8OgCxB19/Eh4S7lmESIkNqBxZ06lR42TpOPVGIRq2rF3FCPrHHesSga7gHVIwMsR nTnAgokNMXINfEGYmf30521xlc42Bf93lOuUvQZQo4V7hbIn41Zn/Gafmxy6eX5J orzGx+GMWzJp4DLJySMVg6su12eca9pDRVeR8Tso+CBmJZ+3fOv5ZDWPjfUMehhH kFsYeAeiXrf7GssNKM9u7MXvYMCKoU/8NGTpa07nR7snuS8IBvOQ9BJbH1ftvtTm JE7uvMwc7uNNZ6hYGiF7LIhNXBcBxxEQzuIvcNM9rytdwpJl8FRiTulopk7x5EDw nfz2UYHS7b3OrFSnw3qA3Dz/G/aP7qgtcfakkDoHKdhBuDTgKeqODq6MTZrYH76w 6hb6577Id4xH4Xs3a1S3dMJvMz10oC0RQOiKH3RCssXRHMCN5mXBWqMlIjl7lZBt gdiT53KIbi8kP62SPu7rGMnLdwvYVtpqLXMSFiET ----------------------------------------------------------------------------------------- !!! DANGER !!! DONT try to change files by yourself, DONT use any third party software for restoring your data or antivirus solutions - its may entail damage of the private key and, as result, The Loss all data. !!! !!! !!! ONE MORE TIME: Its in your interests to get your files back. From our side, we (the best specialists) make everything for restoring, but please should not interfere. !!! !!! !!!
URLs

http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/219115FA40E52D80

http://decryptor.cc/219115FA40E52D80

Signatures

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 25 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 26 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\MCSP89.exe
    "C:\Users\Admin\AppData\Local\Temp\MCSP89.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1992
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:4268
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1040

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    3
    T1112

    Install Root Certificate

    1
    T1130

    Discovery

    Query Registry

    1
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    1
    T1082

    Impact

    Defacement

    1
    T1491

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Recovery\58t3n7-readme.txt
      Filesize

      7KB

      MD5

      a0835d9cf50287bcce4c734a700216ce

      SHA1

      db6c09a54c4a0706a9d4e9f9c69da93925f868c2

      SHA256

      011e66fac60d14610cd9c3328cc5afa19093699d7415b3bcaba09b396184d5be

      SHA512

      0671e875a88f7be0f4b962a6bc65efd810e8a80dd9d10b12090ca1c42722c9dcb41f2fb561f342c346f9ec99f732f31f2bdda6f666dae1a120d6b2f23f611fb0

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u2mq45sv.xlc.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1992-133-0x000002BA740F0000-0x000002BA74112000-memory.dmp
      Filesize

      136KB

    • memory/1992-143-0x000002BA5ADC0000-0x000002BA5ADD0000-memory.dmp
      Filesize

      64KB

    • memory/1992-144-0x000002BA5ADC0000-0x000002BA5ADD0000-memory.dmp
      Filesize

      64KB

    • memory/1992-145-0x000002BA5ADC0000-0x000002BA5ADD0000-memory.dmp
      Filesize

      64KB