Overview

overview

10

Static

static

3

2024-04-18...ck.exe

windows7-x64

10

2024-04-18...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-18_88f57dfae8b2b9e9bb65856c6ceb1046_virlock

  • Size

    135KB

  • Sample

    240418-pzkvmsee7y

  • MD5

    88f57dfae8b2b9e9bb65856c6ceb1046

  • SHA1

    05b2223d933385aaed890b3f66bba5de3fcc0e99

  • SHA256

    b39c0241c428dbf3eb6a20d9f030bb057faf33481f64d3030590a172eb8bd30d

  • SHA512

    79f6c50fd9ce26c9c2361b007f23a86783682706cef713619ec0b51afbb626e5815bb94e6bb3eac8ee27804ec251d2add67b4c71dd2582df3aef2bef3d674f27

  • SSDEEP

    3072:Yv9SS5KHFAgqvxwzhEEv76F58meBEuEyuogy9m:G5KlAxvyzqES58RmVs8

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-18_88f57dfae8b2b9e9bb65856c6ceb1046_virlock

    • Size

      135KB

    • MD5

      88f57dfae8b2b9e9bb65856c6ceb1046

    • SHA1

      05b2223d933385aaed890b3f66bba5de3fcc0e99

    • SHA256

      b39c0241c428dbf3eb6a20d9f030bb057faf33481f64d3030590a172eb8bd30d

    • SHA512

      79f6c50fd9ce26c9c2361b007f23a86783682706cef713619ec0b51afbb626e5815bb94e6bb3eac8ee27804ec251d2add67b4c71dd2582df3aef2bef3d674f27

    • SSDEEP

      3072:Yv9SS5KHFAgqvxwzhEEv76F58meBEuEyuogy9m:G5KlAxvyzqES58RmVs8

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (135) files with added filename extension

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

      ransomware

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Deletes itself

    • 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