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Overview

overview

10

Static

static

7

31c68009f7...3f.exe

windows7-x64

10

31c68009f7...3f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    da3217f8cf177345c9a7c2dd694f37d5d64bc8b3aa2f78561a738bc4d8877adb

  • Size

    84KB

  • Sample

    240731-vdbmqsycnb

  • MD5

    bed148c03d89e8611a6b4cf03e508f80

  • SHA1

    259767a1733cba3b05588408ceab5d36753a7d39

  • SHA256

    da3217f8cf177345c9a7c2dd694f37d5d64bc8b3aa2f78561a738bc4d8877adb

  • SHA512

    7fd49f1182fc9e2828cc20e64fe8d923720567a78a43bf592da28cf2ea13b4d57116cb51c8507d4c233286d5e07144ddf1fcd792dd559db7401b14a9e702d4af

  • SSDEEP

    1536:CqtCCmU/4kuJfLUO7Yri35tAGg1vIc3PsYBq0huFUxOeKH:CqECZfA774DNt3UKrhuT

Score
10/10
defense_evasiondiscoveryevasionexecutionimpactransomwaretrojanupx

Malware Config

Targets

    • Target

      31c68009f7ecf347876b80ea5f1cf54c713a5cbe60386d8e08bf47803dfd763f

    • Size

      86KB

    • MD5

      491bf00c1929f2b26b0badeb38ebfd46

    • SHA1

      28cd844b076e421ff5ff64f582f517f53dcef46d

    • SHA256

      31c68009f7ecf347876b80ea5f1cf54c713a5cbe60386d8e08bf47803dfd763f

    • SHA512

      e85d07020800696eddeacb3c32e1d4175b7e28b899c01d302f002342259fcb86c2925d299d3387029a0c41eb1c9aa6dd02b176113d1b2b98b1707fd841fa6188

    • SSDEEP

      1536:o4yibP4IcW8YEZLjctYoC7xOUlGr2gILtJ8pkKwY85Eonf9rVo2AZISluNV1WPoq:oA0IcphZLHYrqZJlZKp1ZIvMPoOout

    Score
    10/10
    defense_evasiondiscoveryevasionexecutionimpactransomwaretrojanupx

    • Deletes NTFS Change Journal

      The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.

      ransomware

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • UAC bypass

      evasiontrojan

    • Clears Windows event logs

      evasionransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (2900) files with added filename extension

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

      ransomware

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables Task Manager via registry modification

      evasion

    • Disables taskbar notifications via registry modification

      evasion

    • Disables use of System Restore points

      evasion

    • Checks computer location settings

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

    • Deletes itself

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks whether UAC is enabled

      evasiontrojan

    • Enumerates connected drives

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

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Windows Management Instrumentation

1
T1047

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Direct Volume Access

1
T1006

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Indicator Removal

4
T1070

Clear Windows Event Logs

1
T1070.001

File Deletion

3
T1070.004

Modify Registry

5
T1112

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Query Registry

4
T1012

Remote System Discovery

1
T1018

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Data Destruction

1
T1485

Defacement

1
T1491

Inhibit System Recovery

6
T1490

Tasks