Overview

overview

10

Static

static

e1.bin.exe

windows7_x64

10

e1.bin.exe

windows10_x64

10

Analysis

  • max time kernel
    142s
  • max time network
    116s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    17/06/2021, 04:35

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General

  • Target
    e1.bin.exe
  • Size 128KB
  • Sample210617-r9vwessxee
  • SHA256 863e4557e550dd89e5ca0e43c57a3fc1889145c76ec9787e97f76e959fc8e1e1
  • MD5 SHA1 SHA512
Score
10/10
evasionransomware

Malware Config

Extracted

Path

  • C:\$Recycle.Bin\How to decrypt files.txt

Ransom Note
  • Your personal identifier: D43B96A82C31 All files on TOHNICHI network have been encrypted due to insufficient security. The only way to quickly and reliably regain access to your files is to contact us. The price depends on how fast you write to us. In other cases, you risk losing your time and access to data. Usually time is much more valuable than money. FAQ Q: How to contact us A: * Download Tor Browser - https://www.torproject.org/ * Open link in Tor Browser http://eghv5cpdsmuj5e6tpyjk5icgq642hqubildf6yrfnqlq3rmsqk2zanid.onion/contact * Follow the instructions on the website. Q: What guarantees? A: Before paying, we can decrypt several of your test files. Files should not contain valuable information. Q: Can I decrypt my data for free or through intermediaries? A: Use third party programs and intermediaries at your own risk. Third party software may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price or you can become a victim of a scam.�
URLs

  • http://eghv5cpdsmuj5e6tpyjk5icgq642hqubildf6yrfnqlq3rmsqk2zanid.onion/contact

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Modifies extensions of user files 10 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • 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
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e1.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\e1.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3172
    • C:\Windows\System32\vssadmin.exe
      "C:\Windows\sysnative\vssadmin.exe" delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:2188
    • C:\Windows\System32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c bcdedit /set {current} bootstatuspolicy ignoreallfailures
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2400
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} bootstatuspolicy ignoreallfailures
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2628
    • C:\Windows\System32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c bcdedit /set {current} recoveryenabled no
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2460
      • C:\Windows\system32\bcdedit.exe
        bcdedit /set {current} recoveryenabled no
        3⤵
        • Modifies boot configuration data using bcdedit
        PID:2964
    • C:\Windows\System32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c ping 127.0.0.1 && del "C:\Users\Admin\AppData\Local\Temp\e1.bin.exe" >> NUL
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:252
      • C:\Windows\system32\PING.EXE
        ping 127.0.0.1
        3⤵
        • Runs ping.exe
        PID:2188
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3580

Network

        MITRE ATT&CK Enterprise v6

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