Overview

overview

10

Static

static

3

Winhost.exe

windows10-2004-x64

1

Winhost.exe

windows11-21h2-x64

1

Winhost.exe

windows10-2004-x64

10

Winhost.exe

windows11-21h2-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    Winhost.zip

  • Size

    1.1MB

  • Sample

    240429-rnkfvacf62

  • MD5

    7d606aa88face6163ac6e1c1989e9ceb

  • SHA1

    d100448d014695e44e43d402ba5c958889c61466

  • SHA256

    cb63099a1b5f346c2d5f03e035df500de83eebbdf6549a605551ca8bf37774f4

  • SHA512

    ebbb9b5864646392cabedb766aa5278533aac7d402f5d7b1cea4ae682294a8f45b9545205145cb18683d297f74d2842b176a1e907ed343743fa400043d36894b

  • SSDEEP

    24576:o7Mhd0Wi7fch0To7G6jV3l4uXg5jhuTAyjO9fTs7W3IlmO0:QXzKG6XRXgJhusyo7Zt

Score
10/10
evasionspywarestealertrojan

Malware Config

Targets

    • Target

      Winhost.dll

    • Size

      1.0MB

    • MD5

      b095ad31d55b7317ed0a4dfa02188da4

    • SHA1

      374670f2775d82f1bb4ebb3baf35d7e4ba9cfc27

    • SHA256

      e2c05ebcd648404c023232b61dc9ac5ec10df5eaf5c1e48d7ac3e53f0b6437ce

    • SHA512

      e94a32c9832ae9d01e05ed29e82a675753e40d0ed89a2a9d1a265d2d6d690fdccc1d7041586d2f49488d63ba3afe4e03d7fe7731e2a7dc28c7bcdc03282004ac

    • SSDEEP

      24576:q5A5tpOMihhYhs5Wjo6jVblMu5kFvhsTuQJwFrHyzu8:qIWBnio63V5kNhsaQYL

    Score
    1/10
    behavioral1behavioral2

    • Target

      Winhost.exe

    • Size

      139KB

    • MD5

      b046a025e8e53fbd316629125c687c3d

    • SHA1

      5fc76dc221a4287b706ecc57834e7ed848d41a46

    • SHA256

      bc18713902edd2f64cae8d04bf37b8545a10c7882e3d3b1fb6f26a677f27434c

    • SHA512

      be05f7f721d11733172f91d9aad622a86917ccac0e28817ab54d28d13510654755f40a986300d3b823d91fa041ee806823704e3537b2e31dd9de144ac25f7895

    • SSDEEP

      3072:uiS4omp03WQthI/9S3BZi08iRQ1G78IVn27bSfcJA8ltE:uiS4ompB9S3BZi0a1G78IVhcSct

    Score
    10/10
    evasionspywarestealertrojan

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • UAC bypass

      evasiontrojan

    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

      evasion

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Disables cmd.exe use via registry modification

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Windows security modification

      evasiontrojan

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral3behavioral4

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

3
T1562

Disable or Modify Tools

3
T1562.001

Modify Registry

4
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks