Overview

overview

10

Static

static

3

2024-04-25...ck.exe

windows7-x64

10

2024-04-25...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-04-25_b5c27a1763ea89473056d6a1cb88518b_virlock

  • Size

    146KB

  • Sample

    240425-e444zafc58

  • MD5

    b5c27a1763ea89473056d6a1cb88518b

  • SHA1

    1f31642d2bd7c51d9a7c844c74502b3cb4e09aa4

  • SHA256

    94a5eef75529dceb1fcc101ac9f831ae489d4a10b34eab1581231fd40c937a45

  • SHA512

    cc349335936d6eef2ab37febf71a5ed69752cb35acdf435d7370c3f3a212d16c84240282504763788ed8c5a0b04873dac00cd6657ab29cc5f739b7ebb174a937

  • SSDEEP

    3072:tyyQ+b23ov1TtcRfpso/Dg5zsDw+DWybx5BoX:tVMoCfpx/Dg1sD1dw

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-25_b5c27a1763ea89473056d6a1cb88518b_virlock

    • Size

      146KB

    • MD5

      b5c27a1763ea89473056d6a1cb88518b

    • SHA1

      1f31642d2bd7c51d9a7c844c74502b3cb4e09aa4

    • SHA256

      94a5eef75529dceb1fcc101ac9f831ae489d4a10b34eab1581231fd40c937a45

    • SHA512

      cc349335936d6eef2ab37febf71a5ed69752cb35acdf435d7370c3f3a212d16c84240282504763788ed8c5a0b04873dac00cd6657ab29cc5f739b7ebb174a937

    • SSDEEP

      3072:tyyQ+b23ov1TtcRfpso/Dg5zsDw+DWybx5BoX:tVMoCfpx/Dg1sD1dw

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (66) 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

    • 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