Overview

overview

10

Static

static

10

Ultima Mul...in.zip

windows11-21h2-x64

10

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General

  • Target

    Ultima Multihack.bin.zip

  • Size

    425KB

  • Sample

    240707-yd4v3azarh

  • MD5

    35d49dd9f44b48c0be4294ed2c0a099d

  • SHA1

    55fbd21855fe4d5dd64629cab71d8f5bc7477c80

  • SHA256

    cc455bd025ec70ac81041ad079477468e60ed9d590a26cd34b0589dff77a9f67

  • SHA512

    a4408e6fc93e537ec90820f5c3c5f8350fdd7b228041ab7db949e19ee33d783d83659640843036b3140fc00d244cdf0c6d4cce005abade2cd32cb8b90bd8f5d4

  • SSDEEP

    12288:jWgYrB0+QTmsZnyE+TtHm8PDCNODL2/Bv5xwlRFzSKtB+csT:jWTezpZyE+lrCNy8xxmFN+csT

Score
10/10
asyncratdarkcometnjratdefaultguest16bootkitdiscoveryevasionexecutionpersistenceprivilege_escalationrattrojanupx

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

jvjv2044duck33.duckdns.org:6606

jvjv2044duck33.duckdns.org:7707

jvjv2044duck33.duckdns.org:8808
Mutex

TnUTbczVlRq1

Attributes
  • delay

    3

  • install

    true

  • install_file

    WindowsUpdate.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

darkcomet

Botnet

Guest16

C2

jvjv2044duck33.duckdns.org:1604

Mutex

DC_MUTEX-JTZJH1U

Attributes
  • InstallPath

    MSDCSC\msdcs.exe

  • gencode

    BHXZ4Uil0pNa

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    WindowsTemp

Targets

    • Target

      Ultima Multihack.bin.zip

    • Size

      425KB

    • MD5

      35d49dd9f44b48c0be4294ed2c0a099d

    • SHA1

      55fbd21855fe4d5dd64629cab71d8f5bc7477c80

    • SHA256

      cc455bd025ec70ac81041ad079477468e60ed9d590a26cd34b0589dff77a9f67

    • SHA512

      a4408e6fc93e537ec90820f5c3c5f8350fdd7b228041ab7db949e19ee33d783d83659640843036b3140fc00d244cdf0c6d4cce005abade2cd32cb8b90bd8f5d4

    • SSDEEP

      12288:jWgYrB0+QTmsZnyE+TtHm8PDCNODL2/Bv5xwlRFzSKtB+csT:jWTezpZyE+lrCNy8xxmFN+csT

    Score
    10/10
    asyncratdarkcometdefaultguest16bootkitdiscoveryevasionexecutionpersistenceprivilege_escalationrattrojanupx

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

      ratasyncrat

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

      trojanratdarkcomet

    • Async RAT payload

      rat

    • Downloads MZ/PE file

    • Modifies Windows Firewall

      evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • UPX packed file

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

      upx

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery

    • Enumerates connected drives

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

    • Modifies WinLogon

      persistence

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

File and Directory Permissions Modification

1
T1222

Modify Registry

3
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Query Registry

6
T1012

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks