Overview

overview

10

Static

static

nsyu.exe

windows7_x64

10

nsyu.exe

windows10_x64

10

Sharing

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General

  • Target

    nsyu.exe

  • Size

    484KB

  • Sample

    210224-mcg84pcyca

  • MD5

    889729c6f26cfab8f7a1d843ab812d01

  • SHA1

    3b3a9a9c1783c32858b390825d2e17809c94d0d7

  • SHA256

    eef1bce1e5080a4cc33c3fefa7877995f346858e02cf4f5368fc47aa35e503ef

  • SHA512

    c57b58944875ecf8190ee864b6da6f89545732708abeea2a27a30b53a6b29a24636be870b7af6d0c248d28db992b28ccb7f150acee9df4c49ca658c78a0f1df1

Score
10/10
evasionpersistenceransomwarespywaretrojan

Malware Config

Targets

    • Target

      nsyu.exe

    • Size

      484KB

    • MD5

      889729c6f26cfab8f7a1d843ab812d01

    • SHA1

      3b3a9a9c1783c32858b390825d2e17809c94d0d7

    • SHA256

      eef1bce1e5080a4cc33c3fefa7877995f346858e02cf4f5368fc47aa35e503ef

    • SHA512

      c57b58944875ecf8190ee864b6da6f89545732708abeea2a27a30b53a6b29a24636be870b7af6d0c248d28db992b28ccb7f150acee9df4c49ca658c78a0f1df1

    Score
    10/10
    evasionpersistenceransomwarespywaretrojan

    • 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.

      spyware

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Hidden Files and Directories

1
T1158

Modify Registry

4
T1112

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