Overview

overview

10

Static

static

f4bedf6a_b...is.exe

windows7_x64

10

f4bedf6a_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    f4bedf6a_by_Libranalysis

  • Size

    750KB

  • Sample

    210505-cck28fr1cn

  • MD5

    f4bedf6a33857f55b806090612106c46

  • SHA1

    fafe0a137b344da740d47494e9ea6d65554940cb

  • SHA256

    fb1aaee3ac4a6daf542a5d2692d43e6865b257b5862904e47102142c97588e7a

  • SHA512

    20eb7da691b7af7d9b33c71dea709b9938f13975d15e24b5f23ad93437f115257db30ebc6c31f77613b30b6177764e7e24ca1926e0487660b751abf162872fe8

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      f4bedf6a_by_Libranalysis

    • Size

      750KB

    • MD5

      f4bedf6a33857f55b806090612106c46

    • SHA1

      fafe0a137b344da740d47494e9ea6d65554940cb

    • SHA256

      fb1aaee3ac4a6daf542a5d2692d43e6865b257b5862904e47102142c97588e7a

    • SHA512

      20eb7da691b7af7d9b33c71dea709b9938f13975d15e24b5f23ad93437f115257db30ebc6c31f77613b30b6177764e7e24ca1926e0487660b751abf162872fe8

    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