Overview

overview

10

Static

static

10

New folder...er.exe

windows7-x64

7

New folder...er.exe

windows10-2004-x64

9

Sharing

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General

  • Target

    Boostrapper.zip

  • Size

    87.1MB

  • Sample

    250214-fgk81stkgv

  • MD5

    27616850440e9d8eb88466b0478377f7

  • SHA1

    5a4426560ca3c02876e1dca60ed9130d5d9258e1

  • SHA256

    f46d32b7f318804b59c4fd9f41694ff4f8e2af3ed9d6af73904e811088f50fd4

  • SHA512

    5f59dccf2a43959e1c71e31292df5d6fececb26a01279b1694ff63bded43fa1137af818578903e3585b5d257f3d5af268c5b3f9bca67cc7ac5d6055b6c6b1c87

  • SSDEEP

    1572864:gDX63XiLgUzUmKoujuWQqGjY4DCBNlOneqPqbH8YGg9chFk0Imo7O0:gb6nUgUzUmVujuWb2Y4A4WHtaFk08Z

Score
10/10
pysilondefense_evasiondiscoveryexecutionpersistencepyinstallerupx

Malware Config

Targets

    • Target

      New folder (8)/Boostrapper.exe

    • Size

      87.4MB

    • MD5

      328b232d2e73f6bb2c3b4527347e79dd

    • SHA1

      0990cbef0acd7a8d98bd1f1ce69e117640e1c8aa

    • SHA256

      ec6bdb22c9db50ee324c9a551ae60d13a79c05473951e4174646b6e09f491cfc

    • SHA512

      a4758fadfbbe9ae8067921d69d4f78472d03ee0644875e9d7cf75443c516c0ce97311adfde5600126cef8a4c1695c801e201a3e471d3ca86e069715c7b440aa1

    • SSDEEP

      1572864:b2GKlXebWesm/OkiqOv8im2A3+T9E7CliHiYgj+h58sMw5I5e3T9PcJFJZ:bnKRCZsm/OknOv8i36+TXwZ5FQe3TgJ

    Score
    9/10
    upxdefense_evasiondiscoveryexecutionpersistence

    • Enumerates VirtualBox DLL files

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Downloads MZ/PE file

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      defense_evasion

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

File and Directory Discovery

1
T1083

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks