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Overview

overview

10

Static

static

3

2025-03-19...uk.exe

windows7-x64

10

2025-03-19...uk.exe

windows10-2004-x64

10

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General

  • Target

    2025-03-19_ab566bd2a0f20afa6817214cf66269f0_cova_ryuk

  • Size

    1.0MB

  • Sample

    250319-cxfrpavmv5

  • MD5

    ab566bd2a0f20afa6817214cf66269f0

  • SHA1

    31cb35812778d4bbb0c7a496c9d789a13625b056

  • SHA256

    d8270d57a3b02ad700dd88eb35bd00c24899e193efe4d60a1c1d3c5947eaf3ea

  • SHA512

    353d36b414bfaef79f7c3703f33d12ec8467ca6bd71d7dab9aaf4546d60c9b74941fbf41eaa5e0352e34a3bd51b56baefd15183168ee519985eba81fe5399447

  • SSDEEP

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

Score
10/10
badrabbitmimikatzdefense_evasiondiscoveryexploitpersistenceprivilege_escalationransomwarespywarestealer

Malware Config

Targets

    • Target

      2025-03-19_ab566bd2a0f20afa6817214cf66269f0_cova_ryuk

    • Size

      1.0MB

    • MD5

      ab566bd2a0f20afa6817214cf66269f0

    • SHA1

      31cb35812778d4bbb0c7a496c9d789a13625b056

    • SHA256

      d8270d57a3b02ad700dd88eb35bd00c24899e193efe4d60a1c1d3c5947eaf3ea

    • SHA512

      353d36b414bfaef79f7c3703f33d12ec8467ca6bd71d7dab9aaf4546d60c9b74941fbf41eaa5e0352e34a3bd51b56baefd15183168ee519985eba81fe5399447

    • SSDEEP

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

    Score
    10/10
    badrabbitmimikatzdefense_evasiondiscoveryexploitpersistenceprivilege_escalationransomwarespywarestealer

    • BadRabbit

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

      ransomwarebadrabbit

    • Badrabbit family

      badrabbit

    • Mimikatz

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

      mimikatz

    • Mimikatz family

      mimikatz

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

    • Manipulates Digital Signatures

      Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.

    • Modifies Windows Firewall

      defense_evasion

    • Possible privilege escalation attempt

      exploit

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Deobfuscate/Decode Files or Information

      Payload decoded via CertUtil.

      defense_evasion

    • Enumerates connected drives

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

    • File and Directory Permissions Modification: Windows File and Directory Permissions Modification

      defense_evasion

    • 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

Scheduled Task

1
T1053.005

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

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

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

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Deobfuscate/Decode Files or Information

1
T1140

File and Directory Permissions Modification

2
T1222

Windows File and Directory Permissions Modification

1
T1222.001

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

Subvert Trust Controls

1
T1553

SIP and Trust Provider Hijacking

1
T1553.003

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Tasks