avoslocker | c5741701b3866459dd1ffa2477cfd8776713612912693a5897f78aac795d23e9

max time kernel
451s
max time network
466s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
31/03/2025, 00:22

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General

Target
RansomwareSamples/Avos_18_07_2021_403KB.exe
Size 402KB
Sample250331-apdw1ssjs8
SHA256 01792043e07a0db52664c5878b253531b293754dc6fd6a8426899c1a66ddd61f
MD5 de6152b2b3a181509c5d71a332a75043
SHA1 d62c0ad2ec132065c5807c0fe7a4cabcba34cf29
SHA512 99df08f8c0d966c1ca866cc414939ee9ff23a044496497edd5c64fb83a7011718183272f9001dec97111a8e8387218632c7ef6a9f00644e01363540002f5b0d4
SSDEEP 12288:L5rxhWsTDzB6BybYxl+xX4VpMDEvqXHRAS0uayw4H5qsNI4j:L5rxhW6PB6BybYxlWX/DEv4eZw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

avoslocker discovery ransomware

Malware Config

Extracted

Path

C:\Users\GET_YOUR_FILES_BACK.txt

avoslocker

Ransom Note

Attention! Your files have been encrypted using AES-256. We highly suggest not shutting down your computer in case encryption process is not finished, as your files may get corrupted. In order to decrypt your files, you must pay for the decryption key & application. You may do so by visiting us at http://avos2fuj6olp6x36.onion. This is an onion address that you may access using Tor Browser which you may download at https://www.torproject.org/download/ Details such as pricing, how long before the price increases and such will be available to you once you enter your ID presented to you below in this note in our website. Hurry up, as the price may increase in the following days. If you fail to respond in a swift manner, we will leak your files in our press release/blog website accessible at http://avos53nnmi4u6amh.onion/ Your ID: a897b099bf811da5f3a69ceedd351c4f9afac28b8d72f4544d4d6a521209ad24

URLs

http://avos2fuj6olp6x36.onion
http://avos53nnmi4u6amh.onion/

Signatures

Avoslocker Ransomware
Avoslocker is a relatively new ransomware, that was observed in late June and early July, 2021.
ransomware avoslocker
Avoslocker family
avoslocker
Renames multiple (71) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Avos_18_07_2021_403KB.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe
3020	Avos_18_07_2021_403KB.exe

C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Avos_18_07_2021_403KB.exe
"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\Avos_18_07_2021_403KB.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

GET_YOUR_FILES_BACK.txt

Path C:\Users\GET_YOUR_FILES_BACK.txt
Size 913B
SHA256 7bee0aff7241590f5bd35727a1a544a492b7533f1acba685611dd269078d1857
MD5 0237b63f764204e00d7242cc4d908271
SHA1 9d88e59463e2a963bea95d6a2cc5383e922f2f27
SHA512 0daec31046c2704b30760f7aecc944f9591cdf22511e5e9276f3dbc376cc60b04853c3e25abca2e754aeaaaac49c264c7d89d418c832c8275fb5484d51a99b3e
MD5 SHA1 SHA512

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