Overview

overview

10

Static

static

1

avast_free...ne.exe

windows10-2004-x64

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General

  • Target

    avast_free_antivirus_setup_online.exe

  • Size

    257KB

  • Sample

    240525-cbbkvaag52

  • MD5

    cbe3a73d6fb2aeedb7465f80d00bb35f

  • SHA1

    00cd64e442d0cd90e0834c18ccfcb529b8044b89

  • SHA256

    fd56fd95fbe90583ebd8013480ffee6cf983807da2f74e855980c0ee5c2f94d8

  • SHA512

    ea9c8cab2e092c064e770715b463a14e725ec2f5db6814ffbee883278f03e719d13653cd01183b794863d935661d4ac7e39557ead3ee377ac8c6b97108ef9abc

  • SSDEEP

    3072:Z2RaiKg4xmUh1WXHqw/l+qmOELhakVsm3mxB32tLEv8zfdn5f2dZLCozOhhBn+Tn:Z0KgGwHqwOOELha+sm2D2+Uhnguy8

Score
10/10
bootkitdiscoveryevasionpersistencespywarestealertrojan

Malware Config

Targets

    • Target

      avast_free_antivirus_setup_online.exe

    • Size

      257KB

    • MD5

      cbe3a73d6fb2aeedb7465f80d00bb35f

    • SHA1

      00cd64e442d0cd90e0834c18ccfcb529b8044b89

    • SHA256

      fd56fd95fbe90583ebd8013480ffee6cf983807da2f74e855980c0ee5c2f94d8

    • SHA512

      ea9c8cab2e092c064e770715b463a14e725ec2f5db6814ffbee883278f03e719d13653cd01183b794863d935661d4ac7e39557ead3ee377ac8c6b97108ef9abc

    • SSDEEP

      3072:Z2RaiKg4xmUh1WXHqw/l+qmOELhakVsm3mxB32tLEv8zfdn5f2dZLCozOhhBn+Tn:Z0KgGwHqwOOELha+sm2D2+Uhnguy8

    Score
    10/10
    bootkitdiscoveryevasionpersistencespywarestealertrojan

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Drops file in Drivers directory

    • Sets service image path in registry

      persistence

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Checks for any installed AV software in registry

    • Downloads MZ/PE file

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Defense Evasion

Modify Registry

4
T1112

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Query Registry

5
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks