Overview

overview

10

Static

static

3

2024-03-28...ck.exe

windows7-x64

10

2024-03-28...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-03-28_e34e88dc018456a21bcaf02e162775d5_virlock

  • Size

    111KB

  • Sample

    240328-mhhb3sgb89

  • MD5

    e34e88dc018456a21bcaf02e162775d5

  • SHA1

    e7d740fde8087d6ba9ce0c399346ec7d55b48e9b

  • SHA256

    63eff58563b59995a8f571450e8398e9333bd2aa700df1bef86c06c90a8bd427

  • SHA512

    e26dda129dfc52605df57867ee8d037d2a237c03b782ef7b1476617ce087590824cdff0870bb80c9accb3f90dcd31641576179ff87bda736dba25e0230baffcc

  • SSDEEP

    3072:IB3BuNkiCiaufK2Lk0P6FqQ0F41lUQvRs:IBRwLbK2LkzIQ0+1mcRs

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-03-28_e34e88dc018456a21bcaf02e162775d5_virlock

    • Size

      111KB

    • MD5

      e34e88dc018456a21bcaf02e162775d5

    • SHA1

      e7d740fde8087d6ba9ce0c399346ec7d55b48e9b

    • SHA256

      63eff58563b59995a8f571450e8398e9333bd2aa700df1bef86c06c90a8bd427

    • SHA512

      e26dda129dfc52605df57867ee8d037d2a237c03b782ef7b1476617ce087590824cdff0870bb80c9accb3f90dcd31641576179ff87bda736dba25e0230baffcc

    • SSDEEP

      3072:IB3BuNkiCiaufK2Lk0P6FqQ0F41lUQvRs:IBRwLbK2LkzIQ0+1mcRs

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (75) 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

    • Drops file in System32 directory

    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