Overview

overview

10

Static

static

7

b84b639b01...9c.exe

windows7-x64

10

b84b639b01...9c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b84b639b0153d1216fd29fde70acb39c

  • Size

    301KB

  • Sample

    240306-1wsxmaaf76

  • MD5

    b84b639b0153d1216fd29fde70acb39c

  • SHA1

    636af0fc3cbaa18774c17266f391d0f3ee62932c

  • SHA256

    fcf545b1af226807c4636112257a99660eee8a803fa9e46f6a4fa1fe989d0d27

  • SHA512

    95b9e48693d4907d0dcacf44a2221039f0424408240a068482e4fab891d8c7eb78397604667b85de8cfe660d6800deb1d04498aeac55c5739d8c04919bbef4fa

  • SSDEEP

    6144:1xzYzaFXi17jklhtVG84jqfhdVG84jqfho:1NEu3VG84YXVG84Yy

Score
10/10
evasionpersistenceransomwaretrojanupx

Malware Config

Targets

    • Target

      b84b639b0153d1216fd29fde70acb39c

    • Size

      301KB

    • MD5

      b84b639b0153d1216fd29fde70acb39c

    • SHA1

      636af0fc3cbaa18774c17266f391d0f3ee62932c

    • SHA256

      fcf545b1af226807c4636112257a99660eee8a803fa9e46f6a4fa1fe989d0d27

    • SHA512

      95b9e48693d4907d0dcacf44a2221039f0424408240a068482e4fab891d8c7eb78397604667b85de8cfe660d6800deb1d04498aeac55c5739d8c04919bbef4fa

    • SSDEEP

      6144:1xzYzaFXi17jklhtVG84jqfhdVG84jqfho:1NEu3VG84YXVG84Yy

    Score
    10/10
    evasionpersistenceransomwaretrojanupx

    • Modifies WinLogon for persistence

      persistence

    • Modifies visibility of file extensions in Explorer

      evasion

    • Modifies visiblity of hidden/system files in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      evasion

    • Disables use of System Restore points

      evasion

    • Drops file in Drivers directory

    • Sets file execution options in registry

      persistence

    • 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

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

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

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

9
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

1
T1490

Tasks