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-vpv6hsaa8x

  • MD5

    ab566bd2a0f20afa6817214cf66269f0

  • SHA1

    31cb35812778d4bbb0c7a496c9d789a13625b056

  • SHA256

    d8270d57a3b02ad700dd88eb35bd00c24899e193efe4d60a1c1d3c5947eaf3ea

  • SHA512

    353d36b414bfaef79f7c3703f33d12ec8467ca6bd71d7dab9aaf4546d60c9b74941fbf41eaa5e0352e34a3bd51b56baefd15183168ee519985eba81fe5399447

  • SSDEEP

    24576:TR+cl7X1BRnI6hmebOe1gmf2Jg+DTcTugiIwsQhlRv9x/9K4CfFiEr0CJ:l+clb1BRntmeSKJStRv9xFK1gEr0E

Score
10/10
badrabbitmimikatzdiscoveryevasionpersistenceransomware

Malware Config

Targets

    • Target

      FileCrypter.exe

    • Size

      1.0MB

    • MD5

      ab566bd2a0f20afa6817214cf66269f0

    • SHA1

      31cb35812778d4bbb0c7a496c9d789a13625b056

    • SHA256

      d8270d57a3b02ad700dd88eb35bd00c24899e193efe4d60a1c1d3c5947eaf3ea

    • SHA512

      353d36b414bfaef79f7c3703f33d12ec8467ca6bd71d7dab9aaf4546d60c9b74941fbf41eaa5e0352e34a3bd51b56baefd15183168ee519985eba81fe5399447

    • SSDEEP

      24576:TR+cl7X1BRnI6hmebOe1gmf2Jg+DTcTugiIwsQhlRv9x/9K4CfFiEr0CJ:l+clb1BRntmeSKJStRv9xFK1gEr0E

    Score
    10/10
    badrabbitmimikatzdiscoveryevasionpersistenceransomware

    • 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

    • 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 Matrix ATT&CK v13

Initial Access

Replication Through Removable Media

1
T1091

Execution

Scheduled Task/Job

1
T1053

Command and Scripting Interpreter

1
T1059

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

File and Directory Permissions Modification

1
T1222

Modify Registry

2
T1112

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Impact

Defacement

1
T1491

Resource Development

Reconnaissance

Tasks