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Analysis

  • max time kernel
    94s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/12/2024, 08:40

General

  • Target

    f9e2b46c1601d8ba03f09fd5a21eea62.exe

  • Size

    1.8MB

  • MD5

    f9e2b46c1601d8ba03f09fd5a21eea62

  • SHA1

    22acdaa948de36b4adfae67a19dd73bdcbd1dc22

  • SHA256

    61d3f383cdc2638b5fd5a07de512b41a38f24ed994ad2ab1f44a1e079e59b6aa

  • SHA512

    81a5db548f6829cf1a4e514e9f2b1e8f685d21cd0eed43edbe98321a1423ef06f849847769e4d8c8185f602087fe5dd27912a78255d6ee08af1daf65ed89a528

  • SSDEEP

    49152:rX8rok5RtlbYQRTd0NURMkjkQVbUfvExdT9xTNRrkeJ:j8rokft5Td1hzA0x5zkE

Malware Config

Extracted

Family

lumma

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

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.

  • 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 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f9e2b46c1601d8ba03f09fd5a21eea62.exe
    "C:\Users\Admin\AppData\Local\Temp\f9e2b46c1601d8ba03f09fd5a21eea62.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1208
    • C:\Users\Admin\AppData\Local\Temp\GHSMQN93FDH7CPXJYOV5YT.exe
      "C:\Users\Admin\AppData\Local\Temp\GHSMQN93FDH7CPXJYOV5YT.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:4464
    • C:\Users\Admin\AppData\Local\Temp\BK57JI9EZJWCXA3FNZT.exe
      "C:\Users\Admin\AppData\Local\Temp\BK57JI9EZJWCXA3FNZT.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:116

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\BK57JI9EZJWCXA3FNZT.exe

    Filesize

    2.8MB

    MD5

    c8b363548ff963b9eaefdcf0ab866e99

    SHA1

    d3e0fa20ca34e90e5640d30cfd56e7c4b941e917

    SHA256

    1b5103442d7f0ee79daa29f46c1b3bd6ad65e1f844616441e05c592198ebf7f2

    SHA512

    5e69aa93ee6bd2fe29464cf0c07026cefcab515c4217cd6eaa37fe7fb36ceee37a68242625e2fdd70efdc4bdf2cecbb9727189a6f2b3f21138fd6378ad33d3cf

  • C:\Users\Admin\AppData\Local\Temp\GHSMQN93FDH7CPXJYOV5YT.exe

    Filesize

    1.7MB

    MD5

    a5f5306454959cc92379287fa8f99a9a

    SHA1

    6a339fd816392b7683bb7ab9c694340bef5aab67

    SHA256

    b11c07bbbedbe1d3df654b2f26362dce51c0eaef9bc7a87617cd3d300341a72a

    SHA512

    65865f0f8461845b40b75319096cdbabcf567664f1b0cae0f82c4bc6cb64bcbd748b6e9ebaba60eb35fc35a3415cc8278f29f98bf91d22eb39fc9598d92d6c24

  • memory/116-21-0x0000000000950000-0x0000000000E4D000-memory.dmp

    Filesize

    5.0MB

  • memory/116-19-0x0000000000950000-0x0000000000E4D000-memory.dmp

    Filesize

    5.0MB

  • memory/1208-4-0x0000000000700000-0x0000000000BA7000-memory.dmp

    Filesize

    4.7MB

  • memory/1208-5-0x0000000000700000-0x0000000000BA7000-memory.dmp

    Filesize

    4.7MB

  • memory/1208-0-0x0000000000700000-0x0000000000BA7000-memory.dmp

    Filesize

    4.7MB

  • memory/1208-13-0x0000000000700000-0x0000000000BA7000-memory.dmp

    Filesize

    4.7MB

  • memory/1208-14-0x0000000000700000-0x0000000000BA7000-memory.dmp

    Filesize

    4.7MB

  • memory/1208-3-0x0000000000700000-0x0000000000BA7000-memory.dmp

    Filesize

    4.7MB

  • memory/1208-2-0x0000000000701000-0x0000000000726000-memory.dmp

    Filesize

    148KB

  • memory/1208-1-0x0000000077624000-0x0000000077626000-memory.dmp

    Filesize

    8KB

  • memory/4464-10-0x0000000000070000-0x00000000004C8000-memory.dmp

    Filesize

    4.3MB

  • memory/4464-11-0x0000000000070000-0x00000000004C8000-memory.dmp

    Filesize

    4.3MB

  • memory/4464-12-0x0000000000070000-0x00000000004C8000-memory.dmp

    Filesize

    4.3MB

  • memory/4464-23-0x0000000000070000-0x00000000004C8000-memory.dmp

    Filesize

    4.3MB

  • memory/4464-26-0x0000000000070000-0x00000000004C8000-memory.dmp

    Filesize

    4.3MB