Overview

overview

10

Static

static

3

FileCrypter.exe

windows7-x64

10

FileCrypter.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    FileCrypter.exe

  • Size

    1.0MB

  • Sample

    240413-vl6svafa45

  • MD5

    6f1f60d754943d430fc0972d80250baa

  • SHA1

    adf06a5a69d5baf86e78f43e239ad4e0e8f25315

  • SHA256

    768e033c269b8035a23a73c3b31be5d659daa626daa08c17a3b302cc07fe2348

  • SHA512

    bd4e2ce0cf5a86d538e815efce24062155b6026ffa2b03564a001f0eaccf39c02b2b17a6fe5676b338bb6ac8e73df160a9e9e2af80cdb6821aba72764386e522

  • SSDEEP

    24576:TR+cl7X1BRnI6hmebOe1gmx2Jg+DTcTugiIwsQhlRv9x/9K4CfFiEr0CJ:l+clb1BRntmeSKHStRv9xFK1gEr0E

Score
10/10
badrabbitmimikatzdiscoveryevasionpersistenceransomware

Malware Config

Targets

    • Target

      FileCrypter.exe

    • Size

      1.0MB

    • MD5

      6f1f60d754943d430fc0972d80250baa

    • SHA1

      adf06a5a69d5baf86e78f43e239ad4e0e8f25315

    • SHA256

      768e033c269b8035a23a73c3b31be5d659daa626daa08c17a3b302cc07fe2348

    • SHA512

      bd4e2ce0cf5a86d538e815efce24062155b6026ffa2b03564a001f0eaccf39c02b2b17a6fe5676b338bb6ac8e73df160a9e9e2af80cdb6821aba72764386e522

    • SSDEEP

      24576:TR+cl7X1BRnI6hmebOe1gmx2Jg+DTcTugiIwsQhlRv9x/9K4CfFiEr0CJ:l+clb1BRntmeSKHStRv9xFK1gEr0E

    Score
    10/10
    badrabbitmimikatzransomwarediscoveryevasionpersistence

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

      ransomwarebadrabbit

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

      mimikatz

    • mimikatz is an open source tool to dump credentials on Windows

    • Drops file in Drivers directory

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

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

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Command and Scripting Interpreter

1
T1059

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

File and Directory Permissions Modification

1
T1222

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

4
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Tasks