Overview

overview

10

Static

static

3

2024-04-28...ck.exe

windows7-x64

10

2024-04-28...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-04-28_aa451c6b8635e6b4c79a8b422bc09f7f_virlock

  • Size

    2.5MB

  • Sample

    240428-xmbp7seg6w

  • MD5

    aa451c6b8635e6b4c79a8b422bc09f7f

  • SHA1

    ad9ce51a5292ba57a98bb129b361d3ceff85f6fe

  • SHA256

    aab22aa6c9ab1e04bd941365bb105f2161834b3af8bfa143bc063fbb48a086fa

  • SHA512

    9551ff819cba919156898e29e31cc6eaf8c140ef84983a3aea3ea60956bfb41b9a693280b63173980f4e7cf4ca3d16b0773442bdf153cc71cd7f08ed321fd658

  • SSDEEP

    49152:yowwlA62Gt948iJmHFYJY4FmgllfBlT5Ea2GaXI:rw2FteIFYWSl5lTmaFa

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-28_aa451c6b8635e6b4c79a8b422bc09f7f_virlock

    • Size

      2.5MB

    • MD5

      aa451c6b8635e6b4c79a8b422bc09f7f

    • SHA1

      ad9ce51a5292ba57a98bb129b361d3ceff85f6fe

    • SHA256

      aab22aa6c9ab1e04bd941365bb105f2161834b3af8bfa143bc063fbb48a086fa

    • SHA512

      9551ff819cba919156898e29e31cc6eaf8c140ef84983a3aea3ea60956bfb41b9a693280b63173980f4e7cf4ca3d16b0773442bdf153cc71cd7f08ed321fd658

    • SSDEEP

      49152:yowwlA62Gt948iJmHFYJY4FmgllfBlT5Ea2GaXI:rw2FteIFYWSl5lTmaFa

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (79) files with added filename extension

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

      ransomware

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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 Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

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

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks