Overview

overview

10

Static

static

10

PyExec.exe

windows7-x64

7

PyExec.exe

windows10-2004-x64

9

Sharing

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General

  • Target

    PyExec.exe

  • Size

    80.3MB

  • Sample

    240702-sqr45ssfrr

  • MD5

    6725557b568615d013ea051919ba5d72

  • SHA1

    668d038234ab3a3c364ab7ea052e13ed04d6c47a

  • SHA256

    a43eefc2de7a9730ff46135d8f98f0b646ad2a3aefd27958bc00fb13747d62a3

  • SHA512

    c09a7a0d101b12134573df692f35125744db26e0263a38993e5c449a7f288474b6dad28ee0223126b96fb5227603324ce078ef95c9bdae5b6b15b45cfbaa5fce

  • SSDEEP

    1572864:kvxZQglZSSk8IpG7V+VPhq+EE7hlgDiYgj+h58sMwoW399SFcJz7:kvxZx2SkB05aw+veN58y9917

Score
10/10
pysilonevasionexecutionpersistencepyinstallerupx

Malware Config

Targets

    • Target

      PyExec.exe

    • Size

      80.3MB

    • MD5

      6725557b568615d013ea051919ba5d72

    • SHA1

      668d038234ab3a3c364ab7ea052e13ed04d6c47a

    • SHA256

      a43eefc2de7a9730ff46135d8f98f0b646ad2a3aefd27958bc00fb13747d62a3

    • SHA512

      c09a7a0d101b12134573df692f35125744db26e0263a38993e5c449a7f288474b6dad28ee0223126b96fb5227603324ce078ef95c9bdae5b6b15b45cfbaa5fce

    • SSDEEP

      1572864:kvxZQglZSSk8IpG7V+VPhq+EE7hlgDiYgj+h58sMwoW399SFcJz7:kvxZx2SkB05aw+veN58y9917

    Score
    9/10
    upxevasionexecutionpersistence

    • 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

    behavioral1behavioral2

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