Overview

overview

10

Static

static

4a394a5f68...23.exe

windows7_x64

10

4a394a5f68...23.exe

windows10_x64

10

Sharing

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General

  • Target

    4a394a5f68be6704adc8bac0ac9c3ef89e3295b9fd26c92363ae95ff2a8f8d23

  • Size

    623KB

  • Sample

    210511-49ypy51hrj

  • MD5

    6cfb969b2b61fab4bcb4c3b33c987014

  • SHA1

    79e74d1e8fae81b2b1c37769627ac46947f0bc76

  • SHA256

    4a394a5f68be6704adc8bac0ac9c3ef89e3295b9fd26c92363ae95ff2a8f8d23

  • SHA512

    50af7576b9f6237794dcb0ea1b8c6fcddfc405c7423b9829801cdb9f6ec82b1bff3e4282c0204c96be379bff6007ecfc262c6fd38431ab3f5a9a83197b1644c6

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      4a394a5f68be6704adc8bac0ac9c3ef89e3295b9fd26c92363ae95ff2a8f8d23

    • Size

      623KB

    • MD5

      6cfb969b2b61fab4bcb4c3b33c987014

    • SHA1

      79e74d1e8fae81b2b1c37769627ac46947f0bc76

    • SHA256

      4a394a5f68be6704adc8bac0ac9c3ef89e3295b9fd26c92363ae95ff2a8f8d23

    • SHA512

      50af7576b9f6237794dcb0ea1b8c6fcddfc405c7423b9829801cdb9f6ec82b1bff3e4282c0204c96be379bff6007ecfc262c6fd38431ab3f5a9a83197b1644c6

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies WinLogon for persistence

      persistence

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Modify Registry

5
T1112

Hidden Files and Directories

1
T1158

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Tasks