Overview

overview

10

Static

static

c9915631_b...is.exe

windows7_x64

10

c9915631_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    c9915631_by_Libranalysis

  • Size

    124KB

  • Sample

    210505-sxlg92vkhj

  • MD5

    c9915631dd271219bf51fe0a46a1d8ff

  • SHA1

    7d6b0dd72dd6dd3261b0f30525c6860f86de012f

  • SHA256

    1c958bc2a268ce3f104a35882f694f8bead71015937bfb99b0986400ab29d703

  • SHA512

    045d441879636ebc9c6a25994a6aa08172bec3756829bba7b2eb188ee1585d7659f77e43d505c61032a5d36815f205f29b875ae5354fe13857941f366dae0941

Score
10/10
evasionpersistenceransomwaretrojan

Malware Config

Targets

    • Target

      c9915631_by_Libranalysis

    • Size

      124KB

    • MD5

      c9915631dd271219bf51fe0a46a1d8ff

    • SHA1

      7d6b0dd72dd6dd3261b0f30525c6860f86de012f

    • SHA256

      1c958bc2a268ce3f104a35882f694f8bead71015937bfb99b0986400ab29d703

    • SHA512

      045d441879636ebc9c6a25994a6aa08172bec3756829bba7b2eb188ee1585d7659f77e43d505c61032a5d36815f205f29b875ae5354fe13857941f366dae0941

    Score
    10/10
    evasionpersistenceransomwaretrojan

    • 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

    • Executes dropped EXE

    • Sets file execution options in registry

      persistence

    • Loads dropped DLL

    • 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 Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

2
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

9
T1112

Hidden Files and Directories

2
T1158

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Credential Access

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

Remote System Discovery

1
T1018

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Tasks