Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    10-06-2024 11:21

General

  • Target

    VirusShare_4affa384ff6ab351df42fc3a02716670.exe

  • Size

    364KB

  • MD5

    4affa384ff6ab351df42fc3a02716670

  • SHA1

    7bebae1ad50fd27c3df625dc3995256f7d8bb8c2

  • SHA256

    4f1e783f68071d95e0b07e1f8b80ed49d0d94a089ae96016b197f846350cfe66

  • SHA512

    802616cac860ed2facd74387475e45ecd5a9e00fb106db801cd0168659fcecb9bb0ca6afb4cfeeca592d24d20c07add685e9a65c3178c839d37850a324906070

  • SSDEEP

    6144:rHDYm7R++Qhm/FxsB+lIB+0ODLawCi308Ki7B4iTK24D1sr:rHr2mwB+g03S5idVK24Zsr

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\+REcovER+aujdl+.txt

Ransom Note
{}_~_~+ -$.-_+$|~~_|| =|_$.**+-~| $+|=*.-=| !!! IMPORTANT INFORMATION !!!! All of your files are encrypted with RSA-4096. More information about the RSA algorythm can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) Decrypting of your files is only possible with the private key and decrypt program, which is on our secret server. To receive your private key follow one of the links: 1. http://88fga.ketteaero.com/6868E592FC8C7B1F 2. http://2bdfb.spinakrosa.at/6868E592FC8C7B1F 3. http://uj5nj.onanwhit.com/6868E592FC8C7B1F If all of the addresses are not available, follow these steps: 1. Download and install Tor Browser: https://www.torproject.org/download/download-easy.html 2. After a successful installation, run the browser and wait for initialization. 3. Type in the address bar: k7tlx3ghr3m4n2tu.onion/6868E592FC8C7B1F 4. Follow the instructions on the site. !!! Your personal identification ID: 6868E592FC8C7B1F !!! )(*=~_$~+$==-$*~=$$ __$-=-+*
URLs

http://88fga.ketteaero.com/6868E592FC8C7B1F

http://2bdfb.spinakrosa.at/6868E592FC8C7B1F

http://uj5nj.onanwhit.com/6868E592FC8C7B1F

http://k7tlx3ghr3m4n2tu.onion/6868E592FC8C7B1F

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Interacts with shadow copies 2 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs
  • System policy modification 1 TTPs 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\VirusShare_4affa384ff6ab351df42fc3a02716670.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_4affa384ff6ab351df42fc3a02716670.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1368
    • C:\Users\Admin\AppData\Local\Temp\VirusShare_4affa384ff6ab351df42fc3a02716670.exe
      "C:\Users\Admin\AppData\Local\Temp\VirusShare_4affa384ff6ab351df42fc3a02716670.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Users\Admin\Documents\xfchlj.exe
        C:\Users\Admin\Documents\xfchlj.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2772
        • C:\Users\Admin\Documents\xfchlj.exe
          C:\Users\Admin\Documents\xfchlj.exe
          4⤵
          • Drops startup file
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Modifies data under HKEY_USERS
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:620
          • C:\Windows\System32\vssadmin.exe
            "C:\Windows\System32\vssadmin.exe" Delete Shadows /All /Quiet
            5⤵
            • Interacts with shadow copies
            PID:1556
          • C:\Windows\SysWOW64\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\+REcovER+aujdl+.txt
            5⤵
              PID:2288
            • C:\Windows\System32\vssadmin.exe
              "C:\Windows\System32\vssadmin.exe" Delete Shadows /All /Quiet
              5⤵
              • Interacts with shadow copies
              PID:788
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\DOCUME~1\xfchlj.exe >> NUL
              5⤵
                PID:2292
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\VIRUSS~1.EXE >> NUL
            3⤵
            • Deletes itself
            PID:2636
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1900
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
        1⤵
        • Suspicious use of FindShellTrayWindow
        PID:1448

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\+REcovER+aujdl+.png

        Filesize

        37KB

        MD5

        69833ef3a5b4d1a89b93c238cddae402

        SHA1

        1be9bd27719551aa9368b69ebae5b59131d80b2e

        SHA256

        1c1fc2df1edaf568c70a29d7f72070d06da26436b72b64655806d025ef3c8c86

        SHA512

        bcbe06b6c8a9366a8a0067688713165a8b8d5afb5330394b594966c9aebd4abd525ba7efc631243a91f1aeedb5edbc1d76c49edad85d106e2f6f91c670592398

      • C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\+REcovER+aujdl+.txt

        Filesize

        1KB

        MD5

        e610ec85c840bbda40b477092cdcfa26

        SHA1

        6123aaa93906e042b12df064c35dbc515940d44e

        SHA256

        1716707913519aa76013d98c39126aab4624aa5b2d03b098ffc73f08dec7aefb

        SHA512

        af8921822b68dbb9e250ea5ca1ddb0b2cb97b3b3a72ce06fb6cc006bac675e992eb944b5f086e6ed50724770cc5e774626622a4401bff0d4c5a34bfe124920dd

      • C:\Users\Admin\Documents\xfchlj.exe

        Filesize

        364KB

        MD5

        4affa384ff6ab351df42fc3a02716670

        SHA1

        7bebae1ad50fd27c3df625dc3995256f7d8bb8c2

        SHA256

        4f1e783f68071d95e0b07e1f8b80ed49d0d94a089ae96016b197f846350cfe66

        SHA512

        802616cac860ed2facd74387475e45ecd5a9e00fb106db801cd0168659fcecb9bb0ca6afb4cfeeca592d24d20c07add685e9a65c3178c839d37850a324906070

      • memory/620-568-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-1843-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-3944-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-3947-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-3940-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-3939-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-3935-0x00000000036B0000-0x00000000036B2000-memory.dmp

        Filesize

        8KB

      • memory/620-3933-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-3932-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-56-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-54-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-50-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-51-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/620-52-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/1368-0-0x0000000000400000-0x00000000004CB000-memory.dmp

        Filesize

        812KB

      • memory/1448-3936-0x00000000000B0000-0x00000000000B2000-memory.dmp

        Filesize

        8KB

      • memory/2720-6-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-17-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-18-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2720-1-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-7-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-4-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-15-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-31-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-9-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2720-11-0x0000000000400000-0x0000000000475000-memory.dmp

        Filesize

        468KB

      • memory/2772-28-0x0000000000400000-0x00000000004CB000-memory.dmp

        Filesize

        812KB