Analysis

  • max time kernel
    79s
  • max time network
    189s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04-07-2024 22:34

General

  • Target

    416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe

  • Size

    4.4MB

  • MD5

    c5f20b0cb835adff91c281ba3e9995e3

  • SHA1

    b7edfc4fb9befe9acf241e423741e27d68dfd832

  • SHA256

    416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b

  • SHA512

    233587e39de30cfa0a9526fb041f9c9c70a1e7574e8bd8d934f7b795f3eff2a8aa8e98f20a7fcb06f00c85c233461d56bbabb4bba39c1ac4869839e3f0022678

  • SSDEEP

    49152:e+PcYB/o36ki63Hw4/uzcdl3ne2xAOVmmgZV099snm9pswB0Nq7:tPcYB/y6ki6PnuwT06sajB0Nq7

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Extracted

Family

lumma

C2

https://civilizzzationo.shop/api

Signatures

  • Detect Vidar Stealer 3 IoCs
  • Lumma Stealer

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

  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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 SetThreadContext 2 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe
    "C:\Users\Admin\AppData\Local\Temp\416b40630daa924136b9d10e0faa8c800a7a882416f4e5b7944f9bc2553a414b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1368
      • C:\ProgramData\KJKFBAFIDA.exe
        "C:\ProgramData\KJKFBAFIDA.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:672
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4188
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 672 -s 272
          4⤵
          • Program crash
          PID:4084
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\KJKJKFCBKKJD" & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2708
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • Delays execution with timeout.exe
          PID:5104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\KJKFBAFIDA.exe

    Filesize

    937KB

    MD5

    168c5908924803d268d26965c32a5620

    SHA1

    9e0e2dc9c7e931c4ee860c32d83711c433f7b1a3

    SHA256

    2fd72d0d0fbc053a53adee5d9ec6cffde3fb5a3c6ba0c0490e24552b264d5449

    SHA512

    749f0e4da8d6fde35b53e769b0b594c2e63835f970eedc54c8c15889863811b5fb296650ae9f5e255bafdd4b942ad3434a60c48e05f1283820c378d30645f1c1

  • memory/1368-66-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1368-89-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1368-70-0x00007FFF26080000-0x00007FFF2625B000-memory.dmp

    Filesize

    1.9MB

  • memory/1368-68-0x0000000000400000-0x0000000000648000-memory.dmp

    Filesize

    2.3MB

  • memory/1388-45-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-35-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-41-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-65-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-5-0x00000000051F0000-0x000000000520C000-memory.dmp

    Filesize

    112KB

  • memory/1388-4-0x0000000005350000-0x000000000545C000-memory.dmp

    Filesize

    1.0MB

  • memory/1388-63-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-61-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-59-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-57-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-55-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-53-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-51-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-49-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-47-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-0-0x00007FFF26080000-0x00007FFF2625B000-memory.dmp

    Filesize

    1.9MB

  • memory/1388-43-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-39-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-37-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-13-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-33-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-31-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-27-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-23-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-21-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-19-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-17-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-15-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-11-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-9-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-29-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-25-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-7-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-6-0x00000000051F0000-0x0000000005205000-memory.dmp

    Filesize

    84KB

  • memory/1388-3-0x0000000005140000-0x000000000514A000-memory.dmp

    Filesize

    40KB

  • memory/1388-2-0x0000000005280000-0x000000000531C000-memory.dmp

    Filesize

    624KB

  • memory/1388-1-0x0000000000520000-0x0000000000982000-memory.dmp

    Filesize

    4.4MB