Overview

overview

10

Static

static

3

2024-05-23...ck.exe

windows7-x64

10

2024-05-23...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-05-23_25d6586cf3cea9c9a3b7c8d4b784edbc_virlock

  • Size

    204KB

  • Sample

    240523-xpvabscf5s

  • MD5

    25d6586cf3cea9c9a3b7c8d4b784edbc

  • SHA1

    7e2340a2426c74af6c0639907c151ba9b24676b1

  • SHA256

    0f3b66fece3bd62664a4ae3f5996bfa41ef910e75f65a8725903267f4ef85a0e

  • SHA512

    373b15720a3769f6e1418f51fdc7b24f0b719b5a15a17d4e1e3a9a7fe2f02e1bc2efa7f6575ee2449dc6a5633d1b9b3518bea8869591224f3827403954eeb486

  • SSDEEP

    6144:Uq/GqGiKuik1aB+o4nRo0Rc6rNW+ZM7Rn:U4Gqdj19csS

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-05-23_25d6586cf3cea9c9a3b7c8d4b784edbc_virlock

    • Size

      204KB

    • MD5

      25d6586cf3cea9c9a3b7c8d4b784edbc

    • SHA1

      7e2340a2426c74af6c0639907c151ba9b24676b1

    • SHA256

      0f3b66fece3bd62664a4ae3f5996bfa41ef910e75f65a8725903267f4ef85a0e

    • SHA512

      373b15720a3769f6e1418f51fdc7b24f0b719b5a15a17d4e1e3a9a7fe2f02e1bc2efa7f6575ee2449dc6a5633d1b9b3518bea8869591224f3827403954eeb486

    • SSDEEP

      6144:Uq/GqGiKuik1aB+o4nRo0Rc6rNW+ZM7Rn:U4Gqdj19csS

    Score
    10/10
    evasionpersistenceransomwarespywarestealertrojan

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (60) 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.

    • 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