Overview

overview

10

Static

static

55e1c4d76d...0e.exe

windows7-x64

10

55e1c4d76d...0e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-07-2022 06:34

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General

  • Target

    55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e.exe

  • Size

    620KB

  • MD5

    5f685fae5cf582995387f342f60b5e23

  • SHA1

    f99aa09d283e441e42edb46ae48c58f6ac8011ce

  • SHA256

    55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e

  • SHA512

    dc3793c5699e53ccb818787b5f60d866e1a4ab78ac08a0ba0e53db6a3810dfb829f67bf372acf54dcde768d8a7ae9434a213fd7391605b65e4290df5cb5b6ce5

Score
10/10
persistenceransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2660308776-3705150086-26593515-1000\Recovery+hvefa.txt

Ransom Note
__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#! NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with RSA-4096. More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-4096 KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://ert54nfh6hdshbw4f.nursespelk.com/8FA12DEEBE8A2E6 2. http://kk4dshfjn45tsnkdf34fg.tatiejava.at/8FA12DEEBE8A2E6 3. http://akdfrefdkm45tf33fsdfsdf.yamenswash.com/8FA12DEEBE8A2E6 If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser and wait for initialization 3. Type in the address bar: fwgrhsao3aoml7ej.onion/8FA12DEEBE8A2E6 4. Follow the instructions on the site. !!! IMPORTANT INFORMATION: !!! Your personal pages: http://ert54nfh6hdshbw4f.nursespelk.com/8FA12DEEBE8A2E6 http://kk4dshfjn45tsnkdf34fg.tatiejava.at/8FA12DEEBE8A2E6 http://akdfrefdkm45tf33fsdfsdf.yamenswash.com/8FA12DEEBE8A2E6 !!! Your personal page Tor-Browser: fwgrhsao3aoml7ej.onion/8FA12DEEBE8A2E6 !!! Your personal identification ID: 8FA12DEEBE8A2E6
URLs

http://ert54nfh6hdshbw4f.nursespelk.com/8FA12DEEBE8A2E6

http://kk4dshfjn45tsnkdf34fg.tatiejava.at/8FA12DEEBE8A2E6

http://akdfrefdkm45tf33fsdfsdf.yamenswash.com/8FA12DEEBE8A2E6

http://fwgrhsao3aoml7ej.onion/8FA12DEEBE8A2E6

Signatures

  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Executes dropped EXE 3 IoCs
  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e.exe
    "C:\Users\Admin\AppData\Local\Temp\55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4156
    • C:\Users\Admin\AppData\Local\Temp\55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e.exe
      "C:\Users\Admin\AppData\Local\Temp\55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4040
      • C:\Windows\wtnbaocgm.exe
        C:\Windows\wtnbaocgm.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3900
        • C:\Windows\wtnbaocgm.exe
          C:\Windows\wtnbaocgm.exe
          4⤵
          • Executes dropped EXE
          • Modifies extensions of user files
          • Drops startup file
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2776
          • C:\Users\Admin\Documents\nxmfy.exe
            C:\Users\Admin\Documents\nxmfy.exe
            5⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of WriteProcessMemory
            PID:1724
            • C:\Windows\System32\vssadmin.exe
              "C:\Windows\System32\vssadmin.exe" delete shadows /all /Quiet
              6⤵
              • Interacts with shadow copies
              PID:2400
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\55E1C4~1.EXE
        3⤵
          PID:4144
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:964

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    2
    T1490

    Replay Monitor

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    Downloads

    • C:\Users\Admin\Documents\nxmfy.exe
      Filesize

      4KB

      MD5

      307074acffa41e69ae7449338accbac4

      SHA1

      d880915f78361db3b15ff18b0d3239a5d2a6a997

      SHA256

      a5d3ed693c85298bd8f1c116bb16f78e032364143c76da2e22b3d0de29182380

      SHA512

      aba5ffe7ec7342ba381927d3ff995f339b1837faab30e0fe48ed38b2da636b4e38b969a23c1c87271e54862522098775cb2f695c22a42b7a81d7f4e88fefa426

      Download Submit
    • C:\Users\Admin\Documents\nxmfy.exe
      Filesize

      4KB

      MD5

      307074acffa41e69ae7449338accbac4

      SHA1

      d880915f78361db3b15ff18b0d3239a5d2a6a997

      SHA256

      a5d3ed693c85298bd8f1c116bb16f78e032364143c76da2e22b3d0de29182380

      SHA512

      aba5ffe7ec7342ba381927d3ff995f339b1837faab30e0fe48ed38b2da636b4e38b969a23c1c87271e54862522098775cb2f695c22a42b7a81d7f4e88fefa426

      Download Submit
    • C:\Windows\wtnbaocgm.exe
      Filesize

      620KB

      MD5

      5f685fae5cf582995387f342f60b5e23

      SHA1

      f99aa09d283e441e42edb46ae48c58f6ac8011ce

      SHA256

      55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e

      SHA512

      dc3793c5699e53ccb818787b5f60d866e1a4ab78ac08a0ba0e53db6a3810dfb829f67bf372acf54dcde768d8a7ae9434a213fd7391605b65e4290df5cb5b6ce5

      Download Submit
    • C:\Windows\wtnbaocgm.exe
      Filesize

      620KB

      MD5

      5f685fae5cf582995387f342f60b5e23

      SHA1

      f99aa09d283e441e42edb46ae48c58f6ac8011ce

      SHA256

      55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e

      SHA512

      dc3793c5699e53ccb818787b5f60d866e1a4ab78ac08a0ba0e53db6a3810dfb829f67bf372acf54dcde768d8a7ae9434a213fd7391605b65e4290df5cb5b6ce5

      Download Submit
    • C:\Windows\wtnbaocgm.exe
      Filesize

      620KB

      MD5

      5f685fae5cf582995387f342f60b5e23

      SHA1

      f99aa09d283e441e42edb46ae48c58f6ac8011ce

      SHA256

      55e1c4d76da8b185f8a68481bcbcdec3ed44f75dc04845e4a2a66ac0e5f6140e

      SHA512

      dc3793c5699e53ccb818787b5f60d866e1a4ab78ac08a0ba0e53db6a3810dfb829f67bf372acf54dcde768d8a7ae9434a213fd7391605b65e4290df5cb5b6ce5

      Download Submit
    • memory/1724-148-0x0000000000000000-mapping.dmp
      Download
    • memory/2400-151-0x0000000000000000-mapping.dmp
      Download
    • memory/2776-147-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/2776-152-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/2776-146-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/2776-145-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/2776-142-0x0000000000000000-mapping.dmp
      Download
    • memory/3900-136-0x0000000000000000-mapping.dmp
      Download
    • memory/4040-135-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/4040-141-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/4040-139-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/4040-133-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/4040-132-0x0000000000400000-0x0000000000486000-memory.dmp
      Filesize

      536KB

      Download
    • memory/4040-131-0x0000000000000000-mapping.dmp
      Download
    • memory/4144-140-0x0000000000000000-mapping.dmp
      Download
    • memory/4156-130-0x0000000002590000-0x0000000002593000-memory.dmp
      Filesize

      12KB

      Download
    • memory/4156-134-0x0000000002590000-0x0000000002593000-memory.dmp
      Filesize

      12KB

      Download