Overview

overview

10

Static

static

3

2024-04-26...ck.exe

windows7-x64

10

2024-04-26...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-26_cf28cf5f28fb52666e674a1c1258edf7_virlock

  • Size

    345KB

  • Sample

    240426-nbzs8afb5w

  • MD5

    cf28cf5f28fb52666e674a1c1258edf7

  • SHA1

    acfea8bff7c80f79119d00fdceffe0a6cfdbc3f2

  • SHA256

    906837b87ea38e8a6640871d81c11a9e0d57d9ff114e1c5a6aa0f6ee5c4d1cc9

  • SHA512

    2b7a90fd1c73839356b215ae5d459e5e655df9a3653df2867e57649c617c5fa4e7db8af870d8eab462672eddec32e9c815be69c78f899df14648768a93de510e

  • SSDEEP

    6144:gwd6EaxqhBa7EEZaJaSwomNt/uInJ2AlA7:u+qd1SwomvGmJnA7

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-26_cf28cf5f28fb52666e674a1c1258edf7_virlock

    • Size

      345KB

    • MD5

      cf28cf5f28fb52666e674a1c1258edf7

    • SHA1

      acfea8bff7c80f79119d00fdceffe0a6cfdbc3f2

    • SHA256

      906837b87ea38e8a6640871d81c11a9e0d57d9ff114e1c5a6aa0f6ee5c4d1cc9

    • SHA512

      2b7a90fd1c73839356b215ae5d459e5e655df9a3653df2867e57649c617c5fa4e7db8af870d8eab462672eddec32e9c815be69c78f899df14648768a93de510e

    • SSDEEP

      6144:gwd6EaxqhBa7EEZaJaSwomNt/uInJ2AlA7:u+qd1SwomvGmJnA7

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (85) 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
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

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

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Modify Registry

4
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks