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_133a8c1a28986426d2eb0ba6daf4756e_virlock

  • Size

    194KB

  • Sample

    240525-arq95age29

  • MD5

    133a8c1a28986426d2eb0ba6daf4756e

  • SHA1

    954d8ec4bca96c898e8c6dd46b153d314066d656

  • SHA256

    bf12b8d4b73b9a620d6f6fae322ea8763b26932b6802586f610a7a41e3787537

  • SHA512

    4e049d4f65f5a63a3c85d5f7bc2978c66d88acac3cdb75905463afc0da0bea5ac4cc307aa0aeb1e02b0c7f8af8cafbabdf6040236a230dea49455f08711fa6ac

  • SSDEEP

    3072:yF9pLvxydiOrQslB/waKwThbs6XxmBv0CnMOKyFW3ArtsL2U2XckMA/:y/tZyd0S/wpWs6hmqp6pw25l

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-25_133a8c1a28986426d2eb0ba6daf4756e_virlock

    • Size

      194KB

    • MD5

      133a8c1a28986426d2eb0ba6daf4756e

    • SHA1

      954d8ec4bca96c898e8c6dd46b153d314066d656

    • SHA256

      bf12b8d4b73b9a620d6f6fae322ea8763b26932b6802586f610a7a41e3787537

    • SHA512

      4e049d4f65f5a63a3c85d5f7bc2978c66d88acac3cdb75905463afc0da0bea5ac4cc307aa0aeb1e02b0c7f8af8cafbabdf6040236a230dea49455f08711fa6ac

    • SSDEEP

      3072:yF9pLvxydiOrQslB/waKwThbs6XxmBv0CnMOKyFW3ArtsL2U2XckMA/:y/tZyd0S/wpWs6hmqp6pw25l

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (55) 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