Resubmissions

23-08-2021 11:16

210823-an1tcnz34x 10

26-07-2021 13:00

210726-776ptbma1j 10

Analysis

  • max time kernel
    1716s
  • max time network
    1777s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    23-08-2021 11:16

General

  • Target

    51f7bcc2da2c7a0704f1f537c42279b0fa3d3a72808bc8938880de88b21945b9.sample.exe

  • Size

    160KB

  • MD5

    4c89514501b718a7b10da559ae819b69

  • SHA1

    fec64e1dc251feee03590db4205425d5809febff

  • SHA256

    51f7bcc2da2c7a0704f1f537c42279b0fa3d3a72808bc8938880de88b21945b9

  • SHA512

    2228bd2b8b66ebe8e3a2b56b624b61a696e87c7bf74225cfc4708c77099721d03d4f257c99e3bed85aaea5e7395aa32c4cbbbb76d8a298baebcb6e6bf0397a3a

Malware Config

Extracted

Path

C:\wm7jvmv8-readme.txt

Family

sodinokibi

Ransom Note
---=== Welcome. Again. ===--- [+] Whats Happen? [+] Your files are encrypted, and currently unavailable. You can check it: all files on you computer has expansion wm7jvmv8. 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 practise - 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/43F1EF60B7E6ECBE 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.top/43F1EF60B7E6ECBE 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: A+r+McPoi0YfqlaLe1/1j0cdNoyXJTNPov2C18GGbqmhFDWYHh+SEVZuAh/45jcs 2O+V+ZnmxE1lcReXN6im0pekki0AyAk//QfcY7pwmRaTd5Mj8OLppn2mbXSBHX13 5KFTw4483DuGY0SDeonsPIUUef5htGZWOte1bkncoTibwPDEbcEGkJ+g4xH5J9a8 YRdWt+otRO7O1kvVwyEuR/IcemyvBPP45MkHx5UO35sLD2/6LHzOuX1FM5YI2WnQ Tg2RhYY5+iWMstp/6D+RWJfR/HMpm7YIbp5xq1MeWxb9Doa7jvqODeOkjrXg52Vh eN62GeWkIqArcx8euNKgwX/HjiFrltQ1nFGqnR3KwcGELVyT1uOBKpNXZAawcBPA L6hZklc0VCe9rDQp3lhx6x3hr3WmWuI0wA3uv6BiK73uocxRWebeG295BcfVbEQE 3zs3d2q0NO6RJM99ibjCuVfJ8WJxhOSvSpbplFvb0mJEwGVPEkpkTixSUaDuC2mf wIbBUAKPaa+bGAPTw66mAEVDHwuBLU4lKnOMMZI2JTajC4fPZ6eecOXRNGKJboK7 0IOGasaguQFQF4qp1x//vpyOsiZ5Di/+ElvF0xOr9fmDvdqpyfFzF0BdK9FTHZ8U eJfcT31K0qcsDr2cH2N03RmQJtpnbzyMf8vjiCZJgIqAQhzBNfuM9URosMEYHgga 06QN9j9cCUagzg8XxJ7NTIbGXwPoSJudkjug3Q5ewI0ApfOuzuJ3SdUlGV85AcrJ mGp28VPDoxHtpEepxYxZljZeWGt970III2mqZA2a7lIMeZTW5T4meeJ976FiYmGu duBJpJuNjvpE3rnMm+uR/Wl2ekoUWNDLO522Tqt+n7Fdr0DRoBxX7HTQ5XfoLODv +X6fL+3DkxPEF4ZbaSrKrv14O/c3RNommSzL57MzEsnKKJnbGZPFHZeLBrG9VoNf OIP7v/MiXCgeXqaWmUw+XTK5RFRNIYnQ0gMH84jlNauOt+X7rWC2MTNNh1Ok6/wz AIxGtyVlt4/9vZl4+1kubpB5HHzF/ymb3pY6UghLbpUB4fJvaJZDzcWyqXn5pQ+P hBeiuglvDfIZnxKEeQTuWAuqLizB5ErHi4fizfyClviJtjbBpoVJ21MIJtD2cfbX ADI9KzbRrrmPBWmDGrY= Extension name: wm7jvmv8 ----------------------------------------------------------------------------------------- !!! DANGER !!! DONT try to change files by yourself, DONT use any third party software for restoring your data or antivirus solutions - its may entail damge 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/43F1EF60B7E6ECBE

http://decryptor.top/43F1EF60B7E6ECBE

Signatures

  • Sodin,Sodinokibi,REvil

    Ransomware with advanced anti-analysis and privilege escalation functionality.

  • suricata: ET MALWARE Known Sinkhole Response Header

    suricata: ET MALWARE Known Sinkhole Response Header

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 11 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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 36 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.

  • Modifies system certificate store 2 TTPs 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\51f7bcc2da2c7a0704f1f537c42279b0fa3d3a72808bc8938880de88b21945b9.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\51f7bcc2da2c7a0704f1f537c42279b0fa3d3a72808bc8938880de88b21945b9.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1820
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /set {default} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:668
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:584
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:856

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/584-62-0x0000000000000000-mapping.dmp
  • memory/668-61-0x0000000000000000-mapping.dmp
  • memory/1820-60-0x0000000076641000-0x0000000076643000-memory.dmp
    Filesize

    8KB