Overview

overview

10

Static

static

10

c460fc0d4f...50.exe

windows7-x64

c460fc0d4f...50.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850

  • Size

    87KB

  • Sample

    240621-nb5z8sxdkc

  • MD5

    d6d956267a268c9dcf48445629d2803e

  • SHA1

    cc0feae505dad9c140dd21d1b40b518d8e61b3a4

  • SHA256

    c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850

  • SHA512

    e0791f6eb3116d0590be3af3713c94f787f7ced8e904d4bb8fc0d1341f332053414cb1e9095ae2de041b9e6d6d55cf773bf45ebeb74f27bb95c11a3cc364abee

  • SSDEEP

    1536:OXMLuZQG3KJ3QaIH9shR4fZcvr4C9u3MTIdD9mtthd9JovrgmqhtvM4CoLT6QPbc:gMLuZraJ3a0ehcvv9sM+9mtthd0gmWkr

Score
10/10
thanosdefense_evasionevasionexecutionimpactpersistenceransomwaretrojan

Malware Config

Targets

    • Target

      c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850

    • Size

      87KB

    • MD5

      d6d956267a268c9dcf48445629d2803e

    • SHA1

      cc0feae505dad9c140dd21d1b40b518d8e61b3a4

    • SHA256

      c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850

    • SHA512

      e0791f6eb3116d0590be3af3713c94f787f7ced8e904d4bb8fc0d1341f332053414cb1e9095ae2de041b9e6d6d55cf773bf45ebeb74f27bb95c11a3cc364abee

    • SSDEEP

      1536:OXMLuZQG3KJ3QaIH9shR4fZcvr4C9u3MTIdD9mtthd9JovrgmqhtvM4CoLT6QPbc:gMLuZraJ3a0ehcvv9sM+9mtthd0gmWkr

    Score
    10/10
    defense_evasionevasionpersistenceransomwaretrojanexecutionimpact

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Disables service(s)

      evasionexecution

    • Modifies WinLogon for persistence

      persistence

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (54) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

      defense_evasion

    • Windows security modification

      evasiontrojan

    • Legitimate hosting services abused for malware hosting/C2

    • Modifies WinLogon

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Windows Management Instrumentation

1
T1047

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

2
T1547

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

2
T1547

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Modify Registry

5
T1112

Impair Defenses

3
T1562

Disable or Modify Tools

2
T1562.001

Safe Mode Boot

1
T1562.009

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Direct Volume Access

1
T1006

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Inhibit System Recovery

3
T1490

Resource Development

Reconnaissance

Tasks