Overview

overview

9

Static

static

1

paint.net....eb.exe

windows7-x64

7

paint.net....eb.exe

windows10-2004-x64

9

Sharing

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General

  • Target

    paint.net.5.0.2.install.anycpu.web.zip

  • Size

    734KB

  • Sample

    230312-cxtcsaed4t

  • MD5

    e89beda41843c048e1ac4272433daa6c

  • SHA1

    24137615dd6eaa6b465aae19966622f1c6be85c2

  • SHA256

    ed96caac4a2ea5f3c8a295008cde2cafa667820254ae80a1cd87a9a494f0c739

  • SHA512

    30b2c62cf1468afeb8ee8578dc7ccdf5413443bb1a010fec1813c576678a178349e66e4d6a0d00c209102ab460f33e7bb031e0ff1d686a77bc05dde6be2efb51

  • SSDEEP

    12288:kR9mWOYb51N5r+pA9bvWlJ20xg7HWlAq3MCYLuiye+sCC2IcxM8uIcxff:kuYb51v+kzMJOYAqMCYLu7U6lyf

Score
9/10
coreentitydiscoveryevasionpersistencetrojan

Malware Config

Targets

    • Target

      paint.net.5.0.2.install.anycpu.web.exe

    • Size

      1.1MB

    • MD5

      6a5e8c6eec9ab6ed7088bc35739e52d5

    • SHA1

      be77e05970628d62c65b0bd609ef7ab5bb705c8f

    • SHA256

      9d3edf7ade8ce94aaa6038e894562229e002a86840835e573caf1116e7b928a5

    • SHA512

      e56e5356bee8d6d942f1bee7acd0a31fa03f51a7614df6f7bcdec89ec26cc3e7ea686892325938e7156f23c78814e0a9f04eeff255853939b157004ed6c12ed0

    • SSDEEP

      24576:7rYYYYkWYCzwLhA29pQCo7jIC0BuDgwf0z:7rYYYYkvLhA29piUDjwe

    Score
    9/10
    coreentitydiscoveryevasionpersistencetrojan

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

      coreentity

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Checks whether UAC is enabled

      evasiontrojan

    • Enumerates connected drives

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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

4
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

2
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks