General

  • Target

    7e55cf707f1429921daebbc9a454a5fdd3ecc3e43dfd585410f1fc6c506ef466.bin

  • Size

    938KB

  • Sample

    250701-flgfma1tas

  • MD5

    e1b7dba7f1a4cf72b92f27920ea0c246

  • SHA1

    616be155c6aff7395db4f7238a303cdc0907da18

  • SHA256

    7e55cf707f1429921daebbc9a454a5fdd3ecc3e43dfd585410f1fc6c506ef466

  • SHA512

    2eee4756d615d1868f62951e98b9fa990178421fa377a0c4962ae35d6beb793bb7b88e03acadd3d6540bbce1a087cb777dad86c28486a627779e70a318a76801

  • SSDEEP

    24576:dqDEvCTbMWu7rQYlBQcBiT6rprG8alqi:dTvC/MTQYxsWR7alq

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.156.72.2/testmine/random.exe

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.156.72.2/testmine/random.exe

Extracted

Family

lumma

C2

https://rbmlh.xyz/lakd

https://pacwpw.xyz/qwpr

https://comkxjs.xyz/taox

https://unurew.xyz/anhd

https://trsuv.xyz/gait

https://sqgzl.xyz/taoa

https://cexpxg.xyz/airq

https://urarfx.xyz/twox

https://liaxn.xyz/nbzh

Attributes
  • build_id

    982b7ab79d76a230f0168d8f3a04e1f76d23652458

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.156.72.2/testmine/random.exe

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://185.156.72.2/testmine/random.exe

Extracted

Family

gcleaner

C2

45.91.200.135

Targets

    • Target

      7e55cf707f1429921daebbc9a454a5fdd3ecc3e43dfd585410f1fc6c506ef466.bin

    • Size

      938KB

    • MD5

      e1b7dba7f1a4cf72b92f27920ea0c246

    • SHA1

      616be155c6aff7395db4f7238a303cdc0907da18

    • SHA256

      7e55cf707f1429921daebbc9a454a5fdd3ecc3e43dfd585410f1fc6c506ef466

    • SHA512

      2eee4756d615d1868f62951e98b9fa990178421fa377a0c4962ae35d6beb793bb7b88e03acadd3d6540bbce1a087cb777dad86c28486a627779e70a318a76801

    • SSDEEP

      24576:dqDEvCTbMWu7rQYlBQcBiT6rprG8alqi:dTvC/MTQYxsWR7alq

    • GCleaner

      GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

    • Gcleaner family

    • Lumma Stealer, LummaC

      Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

    • Lumma family

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to execute payload.

    • Downloads MZ/PE file

    • Sets service image path in registry

    • Stops running service(s)

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • 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

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Writes to the Master Boot Record (MBR)

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

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Boot or Logon Autostart Execution: Authentication Package

      Suspicious Windows Authentication Registry Modification.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks