Overview

overview

10

Static

static

3

2024-02-21...ck.exe

windows7-x64

10

2024-02-21...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-02-21_ec23f6350b36bad8beac67764f4658bb_virlock

  • Size

    116KB

  • Sample

    240221-nzdwnafc84

  • MD5

    ec23f6350b36bad8beac67764f4658bb

  • SHA1

    7b4301fd1ba04334aa8b94938a3cabc26ef255f4

  • SHA256

    37b6ae28f34e5135332f28c1e225c8059041d4f890c6bc65e18429bb1ff417d3

  • SHA512

    e480e9e766c397eff579b6b5d0e6446493c0a755c2bbc5813b454df67d7715751667a6115340a5512fb22803cc14759c62f8198664bd74e298d33419dafea691

  • SSDEEP

    3072:PXNburQRT2Axn7EaOc8J2xUK3s/kgTf/sHdEV7y1Out8:PXNiuZxnoaOcf0s9qe/

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-02-21_ec23f6350b36bad8beac67764f4658bb_virlock

    • Size

      116KB

    • MD5

      ec23f6350b36bad8beac67764f4658bb

    • SHA1

      7b4301fd1ba04334aa8b94938a3cabc26ef255f4

    • SHA256

      37b6ae28f34e5135332f28c1e225c8059041d4f890c6bc65e18429bb1ff417d3

    • SHA512

      e480e9e766c397eff579b6b5d0e6446493c0a755c2bbc5813b454df67d7715751667a6115340a5512fb22803cc14759c62f8198664bd74e298d33419dafea691

    • SSDEEP

      3072:PXNburQRT2Axn7EaOc8J2xUK3s/kgTf/sHdEV7y1Out8:PXNiuZxnoaOcf0s9qe/

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (90) 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.

    • 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

    • Checks whether UAC is enabled

      evasiontrojan

    • 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

5
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks