Overview

overview

10

Static

static

3

efc8f81723...1e.exe

windows7-x64

10

efc8f81723...1e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 16:27

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General

  • Target

    efc8f8172303ff78d207b2eb8c78511e.exe

  • Size

    195KB

  • MD5

    efc8f8172303ff78d207b2eb8c78511e

  • SHA1

    bdf1d7e889905e4df8485fc7dfbb9bdfb91e676e

  • SHA256

    7fbeac1dca907f4c04fec45a1228c9277f03930355eeac30d101bbce7e2733de

  • SHA512

    056d2289776db4f7ede6076d5e932e9641f3885f6096c022a7d1d06662881d7bb464d3a0605c5b40e50175541d5b370f814a4c2900b9172156161b43a8bb7d67

  • SSDEEP

    3072:6a/EBc2jrORnQssIJZYKcgtHhGk528yJKY8/d7epmB98g89QP2EKOjWk:7EBc2jMQsdJdBgHJ+/dB9rP2sR

Score
10/10
contiransomware

Malware Config

Extracted

Path

C:\Program Files (x86)\readme.txt

Family

conti

Ransom Note
All of your files are currently encrypted by CONTI strain. As you know (if you don't - just "google it"), all of the data that has been encrypted by our software cannot be recovered by any means without contacting our team directly. If you try to use any additional recovery software - the files might be damaged, so if you are willing to try - try it on the data of the lowest value. To make sure that we REALLY CAN get your data back - we offer you to decrypt 2 random files completely free of charge. You can contact our team directly for further instructions through our website : TOR VERSION : (you should download and install TOR browser first https://torproject.org) http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/ HTTPS VERSION : https://contirecovery.xyz/ YOU SHOULD BE AWARE! Just in case, if you try to ignore us. We've downloaded a pack of your internal data and are ready to publish it on out news website if you do not respond. So it will be better for both sides if you contact us as soon as possible. ---BEGIN ID--- ZNBmQgFGbXCmtCB0aaZmMTpHL2YtecUgu6blxIMU12WwvHaAt0PdnKmkdK1zz4PQ ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.xyz/

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

    ransomwareconti
  • Renames multiple (142) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\efc8f8172303ff78d207b2eb8c78511e.exe
    "C:\Users\Admin\AppData\Local\Temp\efc8f8172303ff78d207b2eb8c78511e.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4792
    • C:\Windows\SYSTEM32\cmd.exe
      cmd.exe /c C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{0B6DBF9C-8786-4D9D-B5D9-27A2D4F39AE3}'" delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2780
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:228
  • C:\Windows\System32\wbem\WMIC.exe
    C:\Windows\System32\wbem\WMIC.exe shadowcopy where "ID='{0B6DBF9C-8786-4D9D-B5D9-27A2D4F39AE3}'" delete
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2828

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Program Files (x86)\readme.txt
    Filesize

    1KB

    MD5

    0fcf534007952d7d5b15dcb256af5f26

    SHA1

    ef9032bfdc14226fae860602fb45d3b9d70086a6

    SHA256

    f872f34286d027bc229b27bceb753a8b7f6920a5891e3f5f9e1b50a4d0d279d1

    SHA512

    17c74fa73663e9d236b3c77da668cd11202dca10ca059c22f6e6594b1111cb7116d4ae2ad0b0556dd9056a0b29866060bb84299660f253e816266692e60e013f

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