Overview

overview

10

Static

static

257dd5f0_b...is.exe

windows7_x64

10

257dd5f0_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    257dd5f0_by_Libranalysis

  • Size

    748KB

  • Sample

    210505-9pj9m5s75j

  • MD5

    257dd5f02ecb4a7d1ac67d586808994f

  • SHA1

    c9ff2efde6c2ddd9daefdc1a1317aad96acd5651

  • SHA256

    58efe97ae6d0ed8735205f55a86f569d93517894dee7bf92c2a13918ff9ad10a

  • SHA512

    910fb0046fbb96f722e86e3713f71e54f647ba11c38bf9c1e345b7d726ac144470e7f1f63488d35a9801f9e224907e6b2687f7d1f08d0a938033b477eba4cec4

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      257dd5f0_by_Libranalysis

    • Size

      748KB

    • MD5

      257dd5f02ecb4a7d1ac67d586808994f

    • SHA1

      c9ff2efde6c2ddd9daefdc1a1317aad96acd5651

    • SHA256

      58efe97ae6d0ed8735205f55a86f569d93517894dee7bf92c2a13918ff9ad10a

    • SHA512

      910fb0046fbb96f722e86e3713f71e54f647ba11c38bf9c1e345b7d726ac144470e7f1f63488d35a9801f9e224907e6b2687f7d1f08d0a938033b477eba4cec4

    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