Overview

overview

10

Static

static

3

2024-04-27...ck.exe

windows7-x64

10

2024-04-27...ck.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2024-04-27_634916823f63ee9a9ad37cd2784a5bbd_virlock

  • Size

    181KB

  • Sample

    240427-dz8qxsaa54

  • MD5

    634916823f63ee9a9ad37cd2784a5bbd

  • SHA1

    36ac0a475dd5ec12ed999265d5fd3abe5a77dce0

  • SHA256

    a1e1d55a72658360d9755c3300a073715e18981a855da1b5fe2d80381e0cb790

  • SHA512

    d11cca3f203523fe08da485a959538d2d31854f840ceaff1f47789c6dc2a58aa8bded27de76712ae1efed720631aa240271d712c77e3cf9b3cea612f3858ccbb

  • SSDEEP

    3072:roat8qN/FH+zOtVBSiL+iZchxVMcJ+mQxF98Xrt2FqCIOkUbEBPhIwkgjGjJZNJI:bH1hl6iZchxVJJ+mSF98Xrt2FqCfbEBn

Score
10/10
evasionpersistenceransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      2024-04-27_634916823f63ee9a9ad37cd2784a5bbd_virlock

    • Size

      181KB

    • MD5

      634916823f63ee9a9ad37cd2784a5bbd

    • SHA1

      36ac0a475dd5ec12ed999265d5fd3abe5a77dce0

    • SHA256

      a1e1d55a72658360d9755c3300a073715e18981a855da1b5fe2d80381e0cb790

    • SHA512

      d11cca3f203523fe08da485a959538d2d31854f840ceaff1f47789c6dc2a58aa8bded27de76712ae1efed720631aa240271d712c77e3cf9b3cea612f3858ccbb

    • SSDEEP

      3072:roat8qN/FH+zOtVBSiL+iZchxVMcJ+mQxF98Xrt2FqCIOkUbEBPhIwkgjGjJZNJI:bH1hl6iZchxVJJ+mSF98Xrt2FqCfbEBn

    Score
    10/10
    evasionpersistencespywarestealertrojanransomware

    • Modifies visibility of file extensions in Explorer

      evasion

    • UAC bypass

      evasiontrojan

    • Renames multiple (82) 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