Analysis

  • max time kernel
    149s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-02-2024 22:23

General

  • Target

    a4bdf08099f23da066d81eddb1c229d1.exe

  • Size

    119KB

  • MD5

    a4bdf08099f23da066d81eddb1c229d1

  • SHA1

    bcd16532c813e5ba009d4d3cd246796d3ffb7a45

  • SHA256

    6a3faf643c2c33f48b0e59c9edb14baebbf9ce1678aed83727106b739f0cafcb

  • SHA512

    b5cca53eab5ff8db14cb53262de2dda2730f8149b51366a55bd4bef3c4501e594000edc4695ca61154e768609be0333898a9586f2840df6a23aaa54cd0abc69e

  • SSDEEP

    3072:hIZopSB/iLm7CEdYVgfIYCBP04+i6Hz3qFlhH0ytpAGf:VpSBt7CE+gfIhM4l6Hz3qFlJ0cei

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

  • Detect Lumma Stealer payload V4 13 IoCs
  • Lumma Stealer

    An infostealer written in C++ first seen in August 2022.

  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 2 TTPs 8 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 2 IoCs
  • Modifies Windows Firewall 2 TTPs 5 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 5 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies data under HKEY_USERS 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4bdf08099f23da066d81eddb1c229d1.exe
    "C:\Users\Admin\AppData\Local\Temp\a4bdf08099f23da066d81eddb1c229d1.exe"
    1⤵
    • Looks for VMWare Tools registry key
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:1636
  • C:\Windows\Fonts\wmsncs.exe
    "C:\Windows\Fonts\wmsncs.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies firewall policy service
    • Modifies security service
    • Windows security bypass
    • Looks for VMWare Tools registry key
    • Modifies Installed Components in the registry
    • Deletes itself
    • Executes dropped EXE
    • Windows security modification
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" firewall set portopening TCP 1013 BS
      2⤵
      • Modifies Windows Firewall
      PID:552
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" firewall set portopening TCP 8080 PORT1
      2⤵
      • Modifies Windows Firewall
      PID:1936
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" firewall set portopening TCP 8081 PORT2
      2⤵
      • Modifies Windows Firewall
      PID:3268
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" firewall add allowedprogram "C:\Windows\Fonts\wmsncs.exe" workstation ENABLE ALL
      2⤵
      • Modifies Windows Firewall
      PID:224
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" firewall set allowedprogram "C:\Windows\Fonts\wmsncs.exe" workstation ENABLE ALL
      2⤵
      • Modifies Windows Firewall
      PID:1368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Fonts\wmsncs.exe

    Filesize

    119KB

    MD5

    a4bdf08099f23da066d81eddb1c229d1

    SHA1

    bcd16532c813e5ba009d4d3cd246796d3ffb7a45

    SHA256

    6a3faf643c2c33f48b0e59c9edb14baebbf9ce1678aed83727106b739f0cafcb

    SHA512

    b5cca53eab5ff8db14cb53262de2dda2730f8149b51366a55bd4bef3c4501e594000edc4695ca61154e768609be0333898a9586f2840df6a23aaa54cd0abc69e

  • memory/1636-9-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/1636-1-0x00000000001C0000-0x00000000001C1000-memory.dmp

    Filesize

    4KB

  • memory/1636-2-0x00000000001C0000-0x00000000001C2000-memory.dmp

    Filesize

    8KB

  • memory/1636-0-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-31-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-81-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-24-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-7-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-35-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-58-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-68-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-8-0x00000000001C0000-0x00000000001C2000-memory.dmp

    Filesize

    8KB

  • memory/3008-92-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-125-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-135-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-145-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-155-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB

  • memory/3008-168-0x0000000000400000-0x000000000064D000-memory.dmp

    Filesize

    2.3MB