Analysis

  • max time kernel
    129s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    07-01-2022 19:44

General

  • Target

    5fa3bf951dde536ac87c0c6f6074e400e9a6a6e83fa6a07b617f608e24b4db0c.exe

  • Size

    2.1MB

  • MD5

    6552b8bf9ba6a4931548fe65cde76ad4

  • SHA1

    0c81ed07b0fcc9b8a4ff983ed83dd1c83c8fa600

  • SHA256

    5fa3bf951dde536ac87c0c6f6074e400e9a6a6e83fa6a07b617f608e24b4db0c

  • SHA512

    4421f18fc7b276977366f4099e0602947b85ab0f0b7a75e818389d35b3d8e9d0b81b8128ef47dff47a45e4541d23512267139f361822e18b7bb807105071448d

Malware Config

Extracted

Path

C:\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://contirec7nchr45rx6ympez5rjldibnqzh7lsa56lvjvaeywhvoj3wad.onion/PZ8lOWohN5xGPEYNRMJljsyK7PSBDmbUWQgY74Uvxm8TdMEXICZLVkvTBn5ubLDK 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--- PZ8lOWohN5xGPEYNRMJljsyK7PSBDmbUWQgY74Uvxm8TdMEXICZLVkvTBn5ubLDK ---END ID---
URLs

http://contirec7nchr45rx6ympez5rjldibnqzh7lsa56lvjvaeywhvoj3wad.onion/PZ8lOWohN5xGPEYNRMJljsyK7PSBDmbUWQgY74Uvxm8TdMEXICZLVkvTBn5ubLDK

Signatures

  • Conti Ransomware

    Ransomware generally thought to be a successor to Ryuk.

  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5fa3bf951dde536ac87c0c6f6074e400e9a6a6e83fa6a07b617f608e24b4db0c.exe
    "C:\Users\Admin\AppData\Local\Temp\5fa3bf951dde536ac87c0c6f6074e400e9a6a6e83fa6a07b617f608e24b4db0c.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3160
    • C:\Windows\System32\wbem\WMIC.exe
      shadowcopy where "ID='{0B662981-1382-4EE1-B62A-610BFEE02635}'" delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:760
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:364
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    PID:1968
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k appmodel -s tiledatamodelsvc
    1⤵
    • Drops file in Windows directory
    PID:2276

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/760-117-0x0000000000000000-mapping.dmp

  • memory/2276-118-0x00000164927C0000-0x00000164927D0000-memory.dmp

    Filesize

    64KB

  • memory/2276-119-0x0000016493060000-0x0000016493070000-memory.dmp

    Filesize

    64KB

  • memory/2276-120-0x00000164931D0000-0x00000164931D1000-memory.dmp

    Filesize

    4KB

  • memory/3160-116-0x0000000002610000-0x000000000263C000-memory.dmp

    Filesize

    176KB

  • memory/3160-115-0x00000000001E0000-0x00000000001E1000-memory.dmp

    Filesize

    4KB