Overview

overview

10

Static

static

3

BUG32.exe

windows7-x64

BUG32.exe

windows10-2004-x64

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General

  • Target

    BUG32.zip

  • Size

    2.5MB

  • Sample

    250123-1x7r6sxkdq

  • MD5

    4a17de99235b9d5cf6b65c165be746de

  • SHA1

    bcf06ebc352c807cd4cac19976110c8bde8e08e8

  • SHA256

    40b0c2cb712c0d0bdc5a98c93980e1270fdab8f354a7ab266b4c77a32a9aca95

  • SHA512

    816570691ec0c1c22d564f0fb9a2964651323b608d60eefd79e37db03dd8844d68bba3ed91a0a6e9cbe0bf5789f593b060f61f31bf8131f2c5200f169371010d

  • SSDEEP

    49152:zVxEPctOHZ17NeRgphrI0xU5pXdSipAI4XuiudK9rNH5MATt14KISn7YaYqm+G:zVZoBeRMrvxYXdSip/MHms4KNnMaYqy

Score
10/10
defense_evasiondiscoveryevasionpersistenceprivilege_escalationransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      BUG32.exe

    • Size

      3.0MB

    • MD5

      149cc2ec1900cb778afb50d8026eadf5

    • SHA1

      a7bc1bbc7bdc970757ec369ef0b51dc53989f131

    • SHA256

      817a695e53a1d6e24f2c701751b4d18468f20698f30fada420dfba6e21a09797

    • SHA512

      d617654478beb6325d86c108cddaff8f8d658a235d26b8e0282ed85dca826bdb62b0b67e749c7cd421dbae1d98084220e2f4d5779badb8fd7ab07ff333a35553

    • SSDEEP

      49152:Or2U5IahDUGN97rkqOAackLjQ0rZEAh3oA6wHE+K60Kk0aCLkfAZKt0OJTcL:4H2ahFNNrg3QbQoA6wHEnFN4IJu

    Score
    10/10
    defense_evasiondiscoveryevasionpersistenceprivilege_escalationransomwarespywarestealertrojan

    • Modifies WinLogon for persistence

      persistence

    • Modifies Windows Defender DisableAntiSpyware settings

      evasiontrojan

    • UAC bypass

      defense_evasiontrojan

    • Renames multiple (159) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Disables RegEdit via registry modification

      defense_evasion

    • Disables Task Manager via registry modification

      defense_evasion

    • Checks computer location settings

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

    • Drops startup file

    • Modifies system executable filetype association

      persistence

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Modify Registry

5
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks