Overview

overview

10

Static

static

10

cfed5d5539...27.exe

windows7-x64

10

cfed5d5539...27.exe

windows10-2004-x64

1

Analysis

  • max time kernel
    46s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    07-11-2022 17:52

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General

  • Target

    cfed5d55391704116b3bf68840ebcdd99277054cb1924ecff31876478ed9a927.exe

  • Size

    49KB

  • MD5

    a5e9983614e16c12b9196225007af964

  • SHA1

    af41c7a89f5e0f62f32ab0dbc62417af6795d007

  • SHA256

    cfed5d55391704116b3bf68840ebcdd99277054cb1924ecff31876478ed9a927

  • SHA512

    f3fc8d72ccdeb2d510271627dab4e647d540db9831b6311802cba8b1d17ba1530b59d4ea7e8e065dc836fb793eef872330799817d55a5b82f6bfdacb9c7484a4

  • SSDEEP

    768:VaQRffDB31aCytHLykiKPT3JATD2qBwV2ckjbnsb0Ah99De0YADoYOjvX5qe:VaC318HxZATvnsblYOoYO

Score
10/10
ransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\142354795\+README-WARNING+.txt

Ransom Note
::: Greetings ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay us. .3. Q: What about guarantees? A: 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 cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailboxes: [email protected] or [email protected] .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cfed5d55391704116b3bf68840ebcdd99277054cb1924ecff31876478ed9a927.exe
    "C:\Users\Admin\AppData\Local\Temp\cfed5d55391704116b3bf68840ebcdd99277054cb1924ecff31876478ed9a927.exe"
    1⤵
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:912
      • C:\Windows\system32\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1940
      • C:\Windows\system32\wbadmin.exe
        wbadmin delete catalog -quiet
        3⤵
        • Deletes backup catalog
        PID:360
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1924
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\+README-WARNING+.txt
      2⤵
        PID:2004
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:856
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:976
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1960
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:2016
        • C:\Windows\system32\Dwm.exe
          "C:\Windows\system32\Dwm.exe"
          1⤵
            PID:924

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\Desktop\+README-WARNING+.txt
            Filesize

            1KB

            MD5

            335f3e1104f61c0fbc684e6ba047fe10

            SHA1

            f13e4324ea398a5a78c0f3e071d06d8ae50eeef0

            SHA256

            7db0e03b872fdfee80fdd6e269f6cab8b2f86cd2fe52fc72022b28810c3b8214

            SHA512

            f161d5d30e448afe7d00160dea7f4053f444dda4b250124460b8243bc62e4542d6ddfdf6f0310c0636b04912fb943d7cc9aeddc7c1aec7d9eb5c8c0a4a46e760

            Download Submit

          • memory/360-58-0x000007FEFC591000-0x000007FEFC593000-memory.dmp

            Filesize

            8KB

            Download

          • memory/1768-54-0x0000000076961000-0x0000000076963000-memory.dmp

            Filesize

            8KB

            Download