Overview

overview

10

Static

static

aa625b84_b...is.exe

windows7_x64

10

aa625b84_b...is.exe

windows10_x64

10

Sharing

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General

  • Target

    aa625b84_by_Libranalysis

  • Size

    534KB

  • Sample

    210505-957vy82fxn

  • MD5

    aa625b8479b7874ae21cfce7f0bd6de1

  • SHA1

    f5906108c38dd0ff1a5f846f80cbc648f03e5f0a

  • SHA256

    5f32ef9a224027930381255b1ff7d6be7af83f4886006243effeee31ec775b6e

  • SHA512

    3d047f66aff1786cce70dd8f465e0332a329d2e50c47fa63dab56a81923c3e19f6e536bfdef1d0f978b9ab41043e4aa836a54734e1a569577c58cd35065b7f82

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      aa625b84_by_Libranalysis

    • Size

      534KB

    • MD5

      aa625b8479b7874ae21cfce7f0bd6de1

    • SHA1

      f5906108c38dd0ff1a5f846f80cbc648f03e5f0a

    • SHA256

      5f32ef9a224027930381255b1ff7d6be7af83f4886006243effeee31ec775b6e

    • SHA512

      3d047f66aff1786cce70dd8f465e0332a329d2e50c47fa63dab56a81923c3e19f6e536bfdef1d0f978b9ab41043e4aa836a54734e1a569577c58cd35065b7f82

    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