Overview

overview

10

Static

static

a49789dd_b...is.exe

windows7_x64

10

a49789dd_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    a49789dd_by_Libranalysis

  • Size

    537KB

  • Sample

    210505-a3yr9cqrb6

  • MD5

    a49789dd2d4bd5bcb8813f03e738d95c

  • SHA1

    d6e26b0b077e764c12cb112f7e60813af896f779

  • SHA256

    58c58eec24f583f182194f7a38748ca5d0fa0c0bb0e21d831ba6c706da1cb5e0

  • SHA512

    4eda83d759be9dc2121e9657c58a98c588007a2570803cb462c5b0e0532461fc32404c9c3bf5210c96b9e8c2e515353448c1f6f628d4f6f94d974d9251d76aa4

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      a49789dd_by_Libranalysis

    • Size

      537KB

    • MD5

      a49789dd2d4bd5bcb8813f03e738d95c

    • SHA1

      d6e26b0b077e764c12cb112f7e60813af896f779

    • SHA256

      58c58eec24f583f182194f7a38748ca5d0fa0c0bb0e21d831ba6c706da1cb5e0

    • SHA512

      4eda83d759be9dc2121e9657c58a98c588007a2570803cb462c5b0e0532461fc32404c9c3bf5210c96b9e8c2e515353448c1f6f628d4f6f94d974d9251d76aa4

    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