Resubmissions

23-08-2021 11:16

210823-an1tcnz34x 10

26-07-2021 13:00

210726-776ptbma1j 10

Analysis

  • max time kernel
    1795s
  • max time network
    1801s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • 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:\j8fun09-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 j8fun09. 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/793ABDB05545D8AB 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/793ABDB05545D8AB 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: 9HB8ttGWLNp7THeMzrufsOWUgZkgmUSYNyl2w6FXMDji22CmOjz8eppl82jXBT9t RPNzasn5WqGF/HaTZ8GSGPEeM2gxncI/Qc02IHG2v5RN2KfnQV5MG65X5kha2+AT /w2JPJ83TDGcB2yfryTF8+AuGephTidPbVyESTjZ7++r+2uRKorivIEMT/6uPYd5 WnvlgQje9hkqWfeGUZPqs5EvX8nw6GgUXEVFMGPkLN/MEfAOShDSKFh4HeRL+0d1 LH3npr1vKpgrSys3/ldbWrZKC9mBbPQatni1Ckuh2PaDrd4A8ZtAEwft/mT3NpFt +MbOr4JumjgGhMJ/401HtMtTck/riAs3I8XqjyMu8x0ZdGV2Rwi9mLePUUoygW+h tHpUJRLFH2+9oStKTVsYMGV0/Aj7XDjOp/WUjQ5AKUMTmTLFjbontPrzzGMEo0G9 VE2OaHcbLTjiiXslYMcHV5FhLgiAookFjsLp28pq+Iv+3grmD+Ek/8iSC1s99vzE pwcG8+UyaMxBbpe1W8n0d/XdDt5N3Koyrbv1rj8OPOCBIc0/na0GK+Ipg+7PUKuF kCON1TaAzyCgv21W3feQ9iyGTLU0FyB8TKkdtOXsXw6cl+j27gVeyKA8lYBhVRnj yRinRnY3EEKhSKb9vt2yJS+hoILRJhj+XPdHlTUj8b+1REDYaPWox1rTsvAxJfAg y12af3BNjRVOPbxLpSKJyESVqY2bZX5QtM8ox5PxCAqXGieOV3AZES4SEPfO7Q72 tfTv837pT1jskuOzx1XpInRlY48+lKmrWviAEIIninVAtmn7EwftSwZzLjH0NQ+A Zi/vTtK6YC6x//HSEgruVb3WeS/BtQV1YCzkk5mB8BXYDfXFAIlxgLA6fSt1rJWe QymigfULRhzP3LuM/kRQj1fuP4glZCb1BGuktSxXfaenfos/zh7WhEH4YumUTeGU /au70HnzZFpVfQ/vcuxdOifBrJadDcGO275xoeAbul67w4iUXMRoouBppEUYZk5X qsy+mQW/lb+V9QUPmHajqrUeMimfTAHyKZr8C4EoPSK8H06IEFJqZqfpXAitN5HR f3GcCYpRw5jmKqC8px2D1F/GiZxkQ39NZ4J2vQ/f7Pyd8Jh3aT5Z5RI+SLs= Extension name: j8fun09 ----------------------------------------------------------------------------------------- !!! 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/793ABDB05545D8AB

http://decryptor.top/793ABDB05545D8AB

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 6 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 34 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 18 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 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:3980
    • 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:2272
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        3⤵
        • Interacts with shadow copies
        PID:4012
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:188

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

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Downloads

  • memory/2272-114-0x0000000000000000-mapping.dmp
  • memory/4012-115-0x0000000000000000-mapping.dmp