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Overview

overview

10

Static

static

3

2024-05-21...ck.exe

windows7-x64

10

2024-05-21...ck.exe

windows10-2004-x64

10

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General

  • Target

    2024-05-21_8f12f6672e3a30bea49592af840f6d93_virlock

  • Size

    117KB

  • Sample

    240521-2ay27acc59

  • MD5

    8f12f6672e3a30bea49592af840f6d93

  • SHA1

    b67d1459060b1d16917d68151e64c4286fbe91c2

  • SHA256

    3c7abd7432b74c6f258cf94c6ced8ead24d75fdd98290ac4a8b794839a6971c9

  • SHA512

    36330d2ec44307aae5db01055d104b4c20525f0a7614aaa9c9bb1233d59e00f36788fd59a224cc154f425239a6bde5e85e4a1fea3230857a75e90fa53d6b2c03

  • SSDEEP

    3072:9X75hp2S75mWgAs68JNkl98pMT8DzZ1y3K9Hk0:N75hDdmDv68JNkl98zykr

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-21_8f12f6672e3a30bea49592af840f6d93_virlock

    • Size

      117KB

    • MD5

      8f12f6672e3a30bea49592af840f6d93

    • SHA1

      b67d1459060b1d16917d68151e64c4286fbe91c2

    • SHA256

      3c7abd7432b74c6f258cf94c6ced8ead24d75fdd98290ac4a8b794839a6971c9

    • SHA512

      36330d2ec44307aae5db01055d104b4c20525f0a7614aaa9c9bb1233d59e00f36788fd59a224cc154f425239a6bde5e85e4a1fea3230857a75e90fa53d6b2c03

    • SSDEEP

      3072:9X75hp2S75mWgAs68JNkl98pMT8DzZ1y3K9Hk0:N75hDdmDv68JNkl98zykr

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (85) 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 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

4
T1112

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

Command and Control

Exfiltration

Impact

Tasks