Overview

overview

10

Static

static

3

test.exe

windows7-x64

test.exe

windows10-2004-x64

Sharing

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General

  • Target

    test.exe

  • Size

    1.2MB

  • Sample

    241229-f16dastmfl

  • MD5

    504fc83d83e74187898fa5e48f7aa755

  • SHA1

    0a5c61c8a21df9c5a84424e1024caa1efd336b4f

  • SHA256

    6691acccbdf4630f8bb6d491484976150c5d88688f997f8456b1d18f806b4ede

  • SHA512

    7b5c470bdf915487c480b4f713e8d5d505d2464f4170f271a70c766ed3b7c21124445a7c76acf651519c428ad319c0d634ade7b0bbbb7a769598ce0c8b110066

  • SSDEEP

    24576:GImw98okVgela0as5CqLVO7XJCjkD3N0HRAiy:4L5ljasaU

Score
10/10
avoslockerdefense_evasiondiscoveryevasionexecutionimpactransomware

Malware Config

Targets

    • Target

      test.exe

    • Size

      1.2MB

    • MD5

      504fc83d83e74187898fa5e48f7aa755

    • SHA1

      0a5c61c8a21df9c5a84424e1024caa1efd336b4f

    • SHA256

      6691acccbdf4630f8bb6d491484976150c5d88688f997f8456b1d18f806b4ede

    • SHA512

      7b5c470bdf915487c480b4f713e8d5d505d2464f4170f271a70c766ed3b7c21124445a7c76acf651519c428ad319c0d634ade7b0bbbb7a769598ce0c8b110066

    • SSDEEP

      24576:GImw98okVgela0as5CqLVO7XJCjkD3N0HRAiy:4L5ljasaU

    Score
    10/10
    avoslockerdefense_evasiondiscoveryevasionexecutionimpactransomware

    • Avoslocker Ransomware

      Avoslocker is a relatively new ransomware, that was observed in late June and early July, 2021.

      ransomwareavoslocker

    • Avoslocker family

      avoslocker

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (1451) files with added filename extension

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

      ransomware

    • Stops running service(s)

      evasionexecution

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

System Services

1
T1569

Service Execution

1
T1569.002

Windows Management Instrumentation

1
T1047

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Direct Volume Access

1
T1006

Impair Defenses

1
T1562

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

System Information Discovery

1
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

3
T1490

Service Stop

1
T1489

Tasks