Overview

overview

10

Static

static

1

4cd8b31f43...0N.exe

windows7-x64

10

4cd8b31f43...0N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4cd8b31f431f60f6eb2a845409a6d990N.exe

  • Size

    873KB

  • Sample

    240807-cy85masbre

  • MD5

    4cd8b31f431f60f6eb2a845409a6d990

  • SHA1

    10e86a37e3179915c0fe8e9a68a3f4f61e55867e

  • SHA256

    bc54c6016801763bd8fab24b672051b2dad327090cce65cf142bf76fd491dcde

  • SHA512

    f90d5ed383e3fe8de7b727f00aa3454a92d1cbc643b6d55c22f02cd2028138e99047c5857fd9bdac66a0aadb5f296eabbce030f972fbad10a2e6faf44bfa7f06

  • SSDEEP

    6144:qMxFygJILsPJ4erWA04rxF9J1P2bI9kHqrJHvAfeshYBmch9XJrXs9tFK4dCjm3K:rgoIL24ey54dauofeXfrQVdCCDTgnS

Score
10/10
discoveryevasionpersistence

Malware Config

Targets

    • Target

      4cd8b31f431f60f6eb2a845409a6d990N.exe

    • Size

      873KB

    • MD5

      4cd8b31f431f60f6eb2a845409a6d990

    • SHA1

      10e86a37e3179915c0fe8e9a68a3f4f61e55867e

    • SHA256

      bc54c6016801763bd8fab24b672051b2dad327090cce65cf142bf76fd491dcde

    • SHA512

      f90d5ed383e3fe8de7b727f00aa3454a92d1cbc643b6d55c22f02cd2028138e99047c5857fd9bdac66a0aadb5f296eabbce030f972fbad10a2e6faf44bfa7f06

    • SSDEEP

      6144:qMxFygJILsPJ4erWA04rxF9J1P2bI9kHqrJHvAfeshYBmch9XJrXs9tFK4dCjm3K:rgoIL24ey54dauofeXfrQVdCCDTgnS

    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.

    • 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

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
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

6
T1112

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

1
T1012

System Information Discovery

1
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