Overview

overview

10

Static

static

3

2024-05-25...ck.exe

windows7-x64

10

2024-05-25...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-25_7a8c3761bddf48493b1c70a2c7c0edf8_virlock

  • Size

    187KB

  • Sample

    240525-nt6dqaff57

  • MD5

    7a8c3761bddf48493b1c70a2c7c0edf8

  • SHA1

    4dbc881e89776f6673c0fafbb09793cc85aaf4f3

  • SHA256

    41b2e1b3bf6631b760c9a750fefc44e71d9dcbf90d333f7c04a9ebdd38c4485a

  • SHA512

    3524cb3525ef3d0881256065c4035ff200b0b4e9f12d183078beeccc584eaec24d69db4ad1e9d1086b7e0a490311a7cde7a02c076e5d77b48a3f822044facca7

  • SSDEEP

    3072:cJRmXoYlhBOxAbektPNIWlNW1i4V7LdWXxY2C0UErEOtlV2UmDWAkVSKLlk43QbW:c7slhBOxAbekYWTWlL9UKPztbsF

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-25_7a8c3761bddf48493b1c70a2c7c0edf8_virlock

    • Size

      187KB

    • MD5

      7a8c3761bddf48493b1c70a2c7c0edf8

    • SHA1

      4dbc881e89776f6673c0fafbb09793cc85aaf4f3

    • SHA256

      41b2e1b3bf6631b760c9a750fefc44e71d9dcbf90d333f7c04a9ebdd38c4485a

    • SHA512

      3524cb3525ef3d0881256065c4035ff200b0b4e9f12d183078beeccc584eaec24d69db4ad1e9d1086b7e0a490311a7cde7a02c076e5d77b48a3f822044facca7

    • SSDEEP

      3072:cJRmXoYlhBOxAbektPNIWlNW1i4V7LdWXxY2C0UErEOtlV2UmDWAkVSKLlk43QbW:c7slhBOxAbekYWTWlL9UKPztbsF

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (61) 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.

    • 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