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Overview

overview

10

Static

static

3

Bootstrapper.exe

windows10-2004-x64

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General

  • Target

    Bootstrapper.exe

  • Size

    796KB

  • Sample

    240818-q4sayswdph

  • MD5

    76639ab92661f5c384302899934051ab

  • SHA1

    9b33828f8ad3a686ff02b1a4569b8ae38128caed

  • SHA256

    6bb9ad960bcc9010db1b9918369bdfc4558f19287b5b6562079c610a28320178

  • SHA512

    928e4374c087070f8a6786f9082f05a866751ea877edf9afa23f6941dfc4d6762e1688bbb135788d6286ec324fa117fc60b46fed2f6e3a4ab059465a00f2ebee

  • SSDEEP

    12288:THeLH6iTPSE54sgweI9oaQJj3r+piq+77xOZ+eMm:THeLHdTSEeyoaQJj3Spiq+77xd

Score
10/10
discoveryevasionpersistenceransomwaretrojan

Malware Config

Targets

    • Target

      Bootstrapper.exe

    • Size

      796KB

    • MD5

      76639ab92661f5c384302899934051ab

    • SHA1

      9b33828f8ad3a686ff02b1a4569b8ae38128caed

    • SHA256

      6bb9ad960bcc9010db1b9918369bdfc4558f19287b5b6562079c610a28320178

    • SHA512

      928e4374c087070f8a6786f9082f05a866751ea877edf9afa23f6941dfc4d6762e1688bbb135788d6286ec324fa117fc60b46fed2f6e3a4ab059465a00f2ebee

    • SSDEEP

      12288:THeLH6iTPSE54sgweI9oaQJj3r+piq+77xOZ+eMm:THeLHdTSEeyoaQJj3Spiq+77xd

    Score
    10/10
    discoveryevasionpersistenceransomwaretrojan

    • Modifies WinLogon for persistence

      persistence

    • UAC bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      evasion

    • Checks computer location settings

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

    • Loads dropped DLL

    • Blocklisted process makes network request

    • 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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

3
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Tasks