Analysis

  • max time kernel
    22s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    16-12-2024 14:28

General

  • Target

    591c23cae68a9c792a7eb65cebc40b52.exe

  • Size

    1.8MB

  • MD5

    591c23cae68a9c792a7eb65cebc40b52

  • SHA1

    8099f5a9458238225dd7d12811a0e57961b1d8b0

  • SHA256

    ef123e56243004263637a0ec051578cebffbbe35f1d9cff18b4d9936ddd2d2a0

  • SHA512

    23c3ddb2f9a72c7aedfd5a4f7d1eeff8bb2a6d5be4e4170470286276b6e37ad4580c596ec3f692171f9c74ca41362c8cf4ebf97339059409db661575c6c9b03e

  • SSDEEP

    49152:CiU64is+eQw+9/uTQuSLNPKXCu1ZptAjXE:CTQwQGMuKk1Zp

Malware Config

Extracted

Family

lumma

C2

https://sordid-snaked.cyou/api

https://awake-weaves.cyou/api

https://wrathful-jammy.cyou/api

https://debonairnukk.xyz/api

https://diffuculttan.xyz/api

https://effecterectz.xyz/api

https://deafeninggeh.biz/api

https://immureprech.biz/api

https://tacitglibbr.biz/api

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

Extracted

Family

lumma

C2

https://tacitglibbr.biz/api

Signatures

  • Lumma Stealer, LummaC

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

  • Lumma family
  • Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Stealc family
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Downloads MZ/PE file
  • Checks BIOS information in registry 2 TTPs 6 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Identifies Wine through registry keys 2 TTPs 3 IoCs

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

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of local email clients 2 TTPs

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

  • Reads user/profile data of web browsers 3 TTPs

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

  • Windows security modification 2 TTPs 2 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\591c23cae68a9c792a7eb65cebc40b52.exe
    "C:\Users\Admin\AppData\Local\Temp\591c23cae68a9c792a7eb65cebc40b52.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2992
    • C:\Users\Admin\AppData\Local\Temp\GH0UZVT463Y1XVYAASVSR41PA968PF.exe
      "C:\Users\Admin\AppData\Local\Temp\GH0UZVT463Y1XVYAASVSR41PA968PF.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Identifies Wine through registry keys
      • Windows security modification
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2884
    • C:\Users\Admin\AppData\Local\Temp\7BEDWZ3FVYHRB7MGQ2A4JZMIUY.exe
      "C:\Users\Admin\AppData\Local\Temp\7BEDWZ3FVYHRB7MGQ2A4JZMIUY.exe"
      2⤵
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\7BEDWZ3FVYHRB7MGQ2A4JZMIUY.exe

    Filesize

    1.7MB

    MD5

    e33dc32f04e77bc26482baccb87b9795

    SHA1

    e4a57ead636bd006cecb7d9ec5e9aa36432e1372

    SHA256

    b2ecbacaf99db2c41066c1914b8b3116b5e25683e6552802a24b08d00d563431

    SHA512

    13d735438d20b0d352719c6e32584ed6abfaad6092ff9124393b3f1c6d6aa4314d0ce27c16cc654583973369572ec823423be9be04e34c50184976c0a35c96cf

  • \Users\Admin\AppData\Local\Temp\GH0UZVT463Y1XVYAASVSR41PA968PF.exe

    Filesize

    2.6MB

    MD5

    f86c08a75747002a2a7cd3fbc5fe05c8

    SHA1

    7b9776338fe3a06350c16bc62e927f5ba6490723

    SHA256

    5b4d3426cd705909f38f2a136e2a5a1e593fd66a68c01b0e715f533d20a4218a

    SHA512

    2b8ab4cb0d7aba429f5835462a1c16dd4d0bc1a13c40c5ddf27a900295ca3c168dba79b8af97b26f80017755514e43f71120f1c309dece1fabd41d9147e63790

  • memory/2884-31-0x0000000000970000-0x0000000000C20000-memory.dmp

    Filesize

    2.7MB

  • memory/2884-26-0x0000000000970000-0x0000000000C20000-memory.dmp

    Filesize

    2.7MB

  • memory/2884-25-0x0000000000970000-0x0000000000C20000-memory.dmp

    Filesize

    2.7MB

  • memory/2992-16-0x00000000063C0000-0x0000000006670000-memory.dmp

    Filesize

    2.7MB

  • memory/2992-6-0x00000000002B0000-0x0000000000767000-memory.dmp

    Filesize

    4.7MB

  • memory/2992-5-0x00000000002B0000-0x0000000000767000-memory.dmp

    Filesize

    4.7MB

  • memory/2992-0-0x00000000002B0000-0x0000000000767000-memory.dmp

    Filesize

    4.7MB

  • memory/2992-17-0x00000000002B0000-0x0000000000767000-memory.dmp

    Filesize

    4.7MB

  • memory/2992-15-0x00000000063C0000-0x0000000006670000-memory.dmp

    Filesize

    2.7MB

  • memory/2992-4-0x00000000002B0000-0x0000000000767000-memory.dmp

    Filesize

    4.7MB

  • memory/2992-3-0x00000000002B0000-0x0000000000767000-memory.dmp

    Filesize

    4.7MB

  • memory/2992-2-0x00000000002B1000-0x00000000002D6000-memory.dmp

    Filesize

    148KB

  • memory/2992-1-0x00000000774E0000-0x00000000774E2000-memory.dmp

    Filesize

    8KB

  • memory/3048-24-0x00000000001E0000-0x0000000000875000-memory.dmp

    Filesize

    6.6MB

  • memory/3048-28-0x00000000001E0000-0x0000000000875000-memory.dmp

    Filesize

    6.6MB