Overview

overview

10

Static

static

5a333531_b...is.exe

windows7_x64

10

5a333531_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    5a333531_by_Libranalysis

  • Size

    499KB

  • Sample

    210505-endq4v82ga

  • MD5

    5a333531aa25d090e0a1ccc81b83d846

  • SHA1

    f357e49cd6ecbc113befbcf47199773f12df2591

  • SHA256

    7a1792526cfd98e585fcaee8bcd55a7d0bcafb83fe737c06b843fbba4f8a660c

  • SHA512

    cfd4a1827a8b6b103e656e344846e5a7efddd93919e672d6491fd026c14e4303e03687592547430f46652c6f0140e5966db5375eccbdcd51d76c33f1edef531d

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      5a333531_by_Libranalysis

    • Size

      499KB

    • MD5

      5a333531aa25d090e0a1ccc81b83d846

    • SHA1

      f357e49cd6ecbc113befbcf47199773f12df2591

    • SHA256

      7a1792526cfd98e585fcaee8bcd55a7d0bcafb83fe737c06b843fbba4f8a660c

    • SHA512

      cfd4a1827a8b6b103e656e344846e5a7efddd93919e672d6491fd026c14e4303e03687592547430f46652c6f0140e5966db5375eccbdcd51d76c33f1edef531d

    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.

    • Deletes itself

    • 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

    • Checks whether UAC is enabled

      evasiontrojan

    • 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

6
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

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Tasks