Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2024 01:26

General

  • Target

    4da047e7133eebf2b2220d7329fac13094a46b0b430c4e7870da39c813efdae2.exe

  • Size

    404KB

  • MD5

    5af7d57744592ed62c6ecde2348d721a

  • SHA1

    1a3aaecedbf90f300a33c0b68314cf9b4e5084fe

  • SHA256

    4da047e7133eebf2b2220d7329fac13094a46b0b430c4e7870da39c813efdae2

  • SHA512

    1033e908b43ef9821ee63bb29ea4a7820e26ce0779627b1bab1f0c0dca5c8040bdfabdb3a9ae60725ae6a4de6ab6c0b757444349afa5fae72df872deb0bdf28b

  • SSDEEP

    12288:+1nfasvb+wZd4+/2ghnEOBe74Ege5je2xk:+1nfVjnd4UvhnGpjje2xk

Malware Config

Extracted

Family

vidar

Version

11

Botnet

b74ef0d8ce56e494b0d83e1d5be9dbeb

C2

https://steamcommunity.com/profiles/76561199780418869

https://t.me/ae5ed

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:130.0) Gecko/20100101 Firefox/130.0

Extracted

Family

lumma

Extracted

Family

lumma

C2

https://beearvagueo.site/api

Signatures

  • Detect Vidar Stealer 14 IoCs
  • Lumma Stealer, LummaC

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

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • 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
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4da047e7133eebf2b2220d7329fac13094a46b0b430c4e7870da39c813efdae2.exe
    "C:\Users\Admin\AppData\Local\Temp\4da047e7133eebf2b2220d7329fac13094a46b0b430c4e7870da39c813efdae2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\ProgramData\GHCAKKEGCA.exe
        "C:\ProgramData\GHCAKKEGCA.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2964
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2116
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 92
          4⤵
          • Loads dropped DLL
          • Program crash
          PID:2328
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\CFIEBKEHCAKF" & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2140
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab8B60.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar8C2E.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \ProgramData\GHCAKKEGCA.exe

    Filesize

    527KB

    MD5

    a9978b238babe1166131003c1be7bfb8

    SHA1

    b65655dcab6faa50e7715ea718fcdd2d6cf0e1d6

    SHA256

    f0f83c1f69adc4ea1557704dc5d9f77f40d418ff244dbc3e0afae8de367b8c21

    SHA512

    7d43f0663502c6ee033705095e2b133dfb3826174a36a20fd30e70d9f59de6f2ea84599436e88c3a11e27fa78df1e19b741526f10aa8a618a8ddab5a47e6e13e

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/1304-0-0x0000000074DDE000-0x0000000074DDF000-memory.dmp

    Filesize

    4KB

  • memory/1304-16-0x0000000074DD0000-0x00000000754BE000-memory.dmp

    Filesize

    6.9MB

  • memory/1304-1-0x00000000009C0000-0x0000000000A28000-memory.dmp

    Filesize

    416KB

  • memory/1304-2-0x0000000074DD0000-0x00000000754BE000-memory.dmp

    Filesize

    6.9MB

  • memory/1304-4-0x0000000074DD0000-0x00000000754BE000-memory.dmp

    Filesize

    6.9MB

  • memory/2116-496-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2116-495-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-500-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-497-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-493-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-540-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-494-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-491-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-492-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2116-499-0x0000000000400000-0x0000000000463000-memory.dmp

    Filesize

    396KB

  • memory/2536-7-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-9-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-208-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-197-0x0000000020500000-0x000000002075F000-memory.dmp

    Filesize

    2.4MB

  • memory/2536-358-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-377-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-420-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-439-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-178-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-5-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-159-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-6-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-8-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-227-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-10-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-13-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-15-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-18-0x0000000000400000-0x0000000000676000-memory.dmp

    Filesize

    2.5MB

  • memory/2536-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2964-490-0x00000000003E0000-0x00000000003E1000-memory.dmp

    Filesize

    4KB