Overview

overview

10

Static

static

3

21a7d5e1c0...d4.exe

windows7-x64

10

21a7d5e1c0...d4.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    21a7d5e1c052c07299f2bb3b77799aec0936281e9a7c83d4fe1d777cb3c918d4

  • Size

    64KB

  • Sample

    241120-zn1rtssre1

  • MD5

    87c3b910bb2e9f17682a4c59a0e46df2

  • SHA1

    07ab8e3432a872cf77aba14e042c1bd64cecb1fb

  • SHA256

    21a7d5e1c052c07299f2bb3b77799aec0936281e9a7c83d4fe1d777cb3c918d4

  • SHA512

    d93372b3773db93db7793b9af1ac3f64037887d615f1e764a7658cf9e781fe9ad9662086fc4c184d646dbbd2f3265f71a4f8309d2bc6f8f691d4ecefa7d96325

  • SSDEEP

    768:VNuG777/+V36n9PcXYvn8KR1I3NznRAQZlh4VkpX179r+R5XOwekflNuG777/+VS:V8w2VS9Eovn8KRgWmhZpX1QGwJ8w2VS

Score
10/10
discoveryevasionpersistence

Malware Config

Targets

    • Target

      21a7d5e1c052c07299f2bb3b77799aec0936281e9a7c83d4fe1d777cb3c918d4

    • Size

      64KB

    • MD5

      87c3b910bb2e9f17682a4c59a0e46df2

    • SHA1

      07ab8e3432a872cf77aba14e042c1bd64cecb1fb

    • SHA256

      21a7d5e1c052c07299f2bb3b77799aec0936281e9a7c83d4fe1d777cb3c918d4

    • SHA512

      d93372b3773db93db7793b9af1ac3f64037887d615f1e764a7658cf9e781fe9ad9662086fc4c184d646dbbd2f3265f71a4f8309d2bc6f8f691d4ecefa7d96325

    • SSDEEP

      768:VNuG777/+V36n9PcXYvn8KR1I3NznRAQZlh4VkpX179r+R5XOwekflNuG777/+VS:V8w2VS9Eovn8KRgWmhZpX1QGwJ8w2VS

    Score
    10/10
    discoveryevasionpersistence

    • Modifies WinLogon for persistence

      persistence

    • Modifies visibility of file extensions in Explorer

      evasion

    • Modifies visiblity of hidden/system files in Explorer

      evasion

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Disables cmd.exe use via registry modification

      evasion

    • Disables use of System Restore points

      evasion

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

      persistence

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Modifies WinLogon

      persistence

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

2
T1547.004

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

2
T1547.004

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Modify Registry

9
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

1
T1490

Tasks