Resubmissions

29-06-2024 06:57

240629-hrcqqsshlc 9

29-06-2024 06:52

240629-hm7qbasgqb 6

General

  • Target

    Serc_Menu_V6.1.dll

  • Size

    147KB

  • Sample

    240629-hrcqqsshlc

  • MD5

    4b53870b412dafca64f79c5f26cf072d

  • SHA1

    aa1e0f737442742398db936bd078e2632dae6fa3

  • SHA256

    d4cfd7d94634f3f47edfa00376fdff23f97524de353fb44548adf095e712b9f6

  • SHA512

    7214f14d312d36e8134abc2d6e4f5c1721ba2afac774b509123ed70be859f07cc189374688ebae12d85f859f8fcf99218bd6d86975cef0c859d492dcd84ba907

  • SSDEEP

    3072:RNCSLeGY0nu57Arx8BFGQLIZrOMnK15Y:RNR0bAYHWrOn7

Malware Config

Targets

    • Target

      Serc_Menu_V6.1.dll

    • Size

      147KB

    • MD5

      4b53870b412dafca64f79c5f26cf072d

    • SHA1

      aa1e0f737442742398db936bd078e2632dae6fa3

    • SHA256

      d4cfd7d94634f3f47edfa00376fdff23f97524de353fb44548adf095e712b9f6

    • SHA512

      7214f14d312d36e8134abc2d6e4f5c1721ba2afac774b509123ed70be859f07cc189374688ebae12d85f859f8fcf99218bd6d86975cef0c859d492dcd84ba907

    • SSDEEP

      3072:RNCSLeGY0nu57Arx8BFGQLIZrOMnK15Y:RNR0bAYHWrOn7

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Blocklisted process makes network request

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Active Setup

1
T1547.014

Event Triggered Execution

2
T1546

Image File Execution Options Injection

1
T1546.012

Component Object Model Hijacking

1
T1546.015

Browser Extensions

1
T1176

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Active Setup

1
T1547.014

Event Triggered Execution

2
T1546

Image File Execution Options Injection

1
T1546.012

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

5
T1112

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Command and Control

Web Service

1
T1102

Tasks