Overview

overview

10

Static

static

10

windows_up...ck.exe

windows10-1703-x64

9

Sharing

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General

  • Target

    windows_update_check.exe

  • Size

    75.6MB

  • Sample

    240703-qzy8pszblc

  • MD5

    c849691f1fa5e179ccc8b58a8b257646

  • SHA1

    97bd7ebb876134305071b8b136bc9fe0ef3b0510

  • SHA256

    c5132e605f9e2b8e644dd4480b64120f7fa75c4333ae7222fa4298702150ae69

  • SHA512

    f9a520611aa91e9c0a0fc1bb69c60e6919c7e2947706877fba75d900f4e82d3ddd3fc6960377e08cccfdce43034d56ac1ddca633f8275ab73318e5917d5b3d4e

  • SSDEEP

    1572864:zhQ6l2bSk8IpG7V+VPhqIbE7WjlPIkiY4MHHLeqPNLtDgWcZ4HlWC:zh1WSkB05awIxj5IfMHVLtUrQJ

Score
10/10
pysilonevasionexecutionpersistencepyinstallerupx

Malware Config

Targets

    • Target

      windows_update_check.exe

    • Size

      75.6MB

    • MD5

      c849691f1fa5e179ccc8b58a8b257646

    • SHA1

      97bd7ebb876134305071b8b136bc9fe0ef3b0510

    • SHA256

      c5132e605f9e2b8e644dd4480b64120f7fa75c4333ae7222fa4298702150ae69

    • SHA512

      f9a520611aa91e9c0a0fc1bb69c60e6919c7e2947706877fba75d900f4e82d3ddd3fc6960377e08cccfdce43034d56ac1ddca633f8275ab73318e5917d5b3d4e

    • SSDEEP

      1572864:zhQ6l2bSk8IpG7V+VPhqIbE7WjlPIkiY4MHHLeqPNLtDgWcZ4HlWC:zh1WSkB05awIxj5IfMHVLtUrQJ

    Score
    9/10
    evasionexecutionpersistenceupx

    • 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

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

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

      upx

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

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

Virtualization/Sandbox Evasion

1
T1497

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Modify Registry

1
T1112

Credential Access

Discovery

File and Directory Discovery

1
T1083

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks