Overview

overview

10

Static

static

1

Windows11I...nt.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Windows11InstallationAssistant.exe

  • Size

    4.0MB

  • Sample

    241207-3raxcswkbr

  • MD5

    73c8041e8b532d9791ef3987f82d73c2

  • SHA1

    0ad458c01db820fa808d41d38e282cf962806910

  • SHA256

    188698d10b1f7b9710061ec95e0aec55a0cb2239e622fa4f7fdd5d360d00a007

  • SHA512

    a5402ec7871867d579d1a9c8142ebce31c23153ec4395e746474e524531dd58781a0644cccd869333c044a41e61fef48e118f4ed46860bc8cb7b90fc60925304

  • SSDEEP

    98304:HgqIctyETh4cCpI0kwJF4vY5SK63dzBEZht5f/LyXtcH/AU:Aqtyih9Cawjr/6NAjyXa

Score
10/10
dharmacredential_accessdefense_evasiondiscoveryexecutionexploitimpactpersistenceprivilege_escalationransomwarespywarestealer

Malware Config

Targets

    • Target

      Windows11InstallationAssistant.exe

    • Size

      4.0MB

    • MD5

      73c8041e8b532d9791ef3987f82d73c2

    • SHA1

      0ad458c01db820fa808d41d38e282cf962806910

    • SHA256

      188698d10b1f7b9710061ec95e0aec55a0cb2239e622fa4f7fdd5d360d00a007

    • SHA512

      a5402ec7871867d579d1a9c8142ebce31c23153ec4395e746474e524531dd58781a0644cccd869333c044a41e61fef48e118f4ed46860bc8cb7b90fc60925304

    • SSDEEP

      98304:HgqIctyETh4cCpI0kwJF4vY5SK63dzBEZht5f/LyXtcH/AU:Aqtyih9Cawjr/6NAjyXa

    Score
    10/10
    dharmacredential_accessdefense_evasiondiscoveryexecutionexploitimpactpersistenceprivilege_escalationransomwarespywarestealer

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

      ransomwaredharma

    • Dharma family

      dharma

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (530) files with added filename extension

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

      ransomware

    • Blocklisted process makes network request

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • Downloads MZ/PE file

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

      persistenceprivilege_escalation

    • Possible privilege escalation attempt

      exploit

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Drops startup file

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

      persistence

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

2
T1546

Accessibility Features

1
T1546.008

AppInit DLLs

1
T1546.010

Power Settings

1
T1653

Privilege Escalation

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Event Triggered Execution

2
T1546

Accessibility Features

1
T1546.008

AppInit DLLs

1
T1546.010

Defense Evasion

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Direct Volume Access

1
T1006

File and Directory Permissions Modification

1
T1222

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

3
T1112

Credential Access

Credentials from Password Stores

2
T1555

Credentials from Web Browsers

1
T1555.003

Windows Credential Manager

1
T1555.004

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

2
T1120

Query Registry

6
T1012

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Inhibit System Recovery

2
T1490

Tasks