Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-09-2024 01:36

General

  • Target

    c7f39760d17bd7c8c08ca2cc7c88e825526b5149c80543dbedacc052fa9ea479.exe

  • Size

    411KB

  • MD5

    9bcf6be0b4b8eff680b0d8539237a496

  • SHA1

    d4f023de60407bbf80512a76339b14ef01060439

  • SHA256

    c7f39760d17bd7c8c08ca2cc7c88e825526b5149c80543dbedacc052fa9ea479

  • SHA512

    f0b3a552a6482135cc3b9d8872b93201bfc11f89d544aa29779dfd6a45a6e60d05316b3d0550e989bbe7ed2819d0e59e31fa71976f08ea0a681e0d2626a1b48d

  • SSDEEP

    6144:PVDE42g2K7jOz5rVp+9Mphcr4vP9UXVFwzwbnaTDW+QSOBiQglLEO:JE5g37u5rVLhvUFKz+CDWV5uEO

Malware Config

Extracted

Family

vidar

Version

11

Botnet

dea7c01007a657ba0c601c941632f140

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

C2

https://questionmwq.shop/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.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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 2 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).

  • 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 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c7f39760d17bd7c8c08ca2cc7c88e825526b5149c80543dbedacc052fa9ea479.exe
    "C:\Users\Admin\AppData\Local\Temp\c7f39760d17bd7c8c08ca2cc7c88e825526b5149c80543dbedacc052fa9ea479.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2192
    • 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:2964
      • C:\ProgramData\GDHIIIIEHC.exe
        "C:\ProgramData\GDHIIIIEHC.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1992
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\GCBFBGCGIJKJ" & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1476
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 10
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:1056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab1FA3.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar1FC5.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \ProgramData\GDHIIIIEHC.exe

    Filesize

    354KB

    MD5

    384a847ad2833788fa253433fd2eea8d

    SHA1

    1984d8788fe40bd95a90d7d4e9dea6c4e4ff6201

    SHA256

    de30491736617249b3e80fc9436ecf0f7675b3c3014509398c3db7298f93336a

    SHA512

    bcdbd44837629d8881c29a7c7f6a2d4e98b52fbc49952bad2c89340a1dee18fac9987aaa8a3d91905a1f88a216c0e2501201a8665f3df7d5f627ff71a2418aac

  • \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/1468-534-0x0000000072BC0000-0x00000000732AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1468-535-0x0000000072BC0000-0x00000000732AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1468-493-0x0000000072BCE000-0x0000000072BCF000-memory.dmp

    Filesize

    4KB

  • memory/1468-494-0x0000000000B20000-0x0000000000B7A000-memory.dmp

    Filesize

    360KB

  • memory/1468-495-0x0000000072BC0000-0x00000000732AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1992-530-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-524-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-528-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1992-547-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-523-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-532-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-525-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-536-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-527-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/1992-526-0x0000000000400000-0x000000000045D000-memory.dmp

    Filesize

    372KB

  • memory/2192-0-0x00000000742BE000-0x00000000742BF000-memory.dmp

    Filesize

    4KB

  • memory/2192-1-0x0000000000D80000-0x0000000000DE8000-memory.dmp

    Filesize

    416KB

  • memory/2192-5-0x00000000742B0000-0x000000007499E000-memory.dmp

    Filesize

    6.9MB

  • memory/2192-2-0x00000000742B0000-0x000000007499E000-memory.dmp

    Filesize

    6.9MB

  • memory/2192-20-0x00000000742B0000-0x000000007499E000-memory.dmp

    Filesize

    6.9MB

  • memory/2964-7-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-420-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-439-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-377-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-358-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-227-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-208-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-197-0x0000000020340000-0x000000002059F000-memory.dmp

    Filesize

    2.4MB

  • memory/2964-178-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-159-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-4-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-13-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-15-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-17-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-9-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-6-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-8-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-10-0x0000000000400000-0x0000000000675000-memory.dmp

    Filesize

    2.5MB

  • memory/2964-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB