Resubmissions

21-09-2024 22:18

240921-18dcpsxbqc 10

21-09-2024 22:18

240921-179draxbph 10

21-09-2024 21:32

240921-1dpggsvflp 10

Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-09-2024 21:32

General

  • Target

    66eef0cc8034a_sdgdfs.exe

  • Size

    216KB

  • MD5

    9a29528b1463ae389bd3e03e4e686a56

  • SHA1

    0cefb61f8615c6ed5606360db20adecdedf4c59c

  • SHA256

    a0add2ff01fd0b1c7a259a9b0f0bdee713a7edbbf12fa18820fc95a373254e3b

  • SHA512

    34743dd19630de9802258476e6c9aacd14b7338c9e1c22c0369e759844b3248570b272c7edbc89079fe5eb8f375c7e2680e71f88ab5b8a4c01ba4d7ef116f9ae

  • SSDEEP

    6144:mebX1UAoZZJAttlJ7VTUEioaTwfyhv3pVdPRigEO:mejOA0ZJutHNI106hfpRhEO

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://46.8.231.109

Attributes
  • url_path

    /c4754d4f680ead72.php

Extracted

Family

vidar

Version

11

Botnet

3a15237aa92dcd8ccca447211fb5fc2a

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

Signatures

  • Detect Vidar Stealer 13 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • 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 3 IoCs
  • Loads dropped DLL 4 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 4 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 3 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 12 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 4 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\66eef0cc8034a_sdgdfs.exe
    "C:\Users\Admin\AppData\Local\Temp\66eef0cc8034a_sdgdfs.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5008
    • 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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5620
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminGDHCGDGIEB.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2100
        • C:\Users\AdminGDHCGDGIEB.exe
          "C:\Users\AdminGDHCGDGIEB.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4624
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            5⤵
              PID:3308
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              5⤵
              • System Location Discovery: System Language Discovery
              PID:6036
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 6036 -s 1272
                6⤵
                • Program crash
                PID:3164
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\AdminKKJJEBFCGD.exe"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4304
          • C:\Users\AdminKKJJEBFCGD.exe
            "C:\Users\AdminKKJJEBFCGD.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1384
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              5⤵
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1968
              • C:\ProgramData\IIIJECAEGD.exe
                "C:\ProgramData\IIIJECAEGD.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:4116
                • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                  7⤵
                  • System Location Discovery: System Language Discovery
                  PID:1188
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1188 -s 1272
                    8⤵
                    • Program crash
                    PID:4684
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -u -p 1188 -s 1252
                    8⤵
                    • Program crash
                    PID:5016
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\FIJKEHJJDAAK" & exit
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:3028
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 10
                  7⤵
                  • System Location Discovery: System Language Discovery
                  • Delays execution with timeout.exe
                  PID:1452
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 6036 -ip 6036
      1⤵
        PID:5856
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1188 -ip 1188
        1⤵
          PID:1680
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1188 -ip 1188
          1⤵
            PID:5944

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\FIJKEHJJDAAK\GIDAEC

            Filesize

            112KB

            MD5

            87210e9e528a4ddb09c6b671937c79c6

            SHA1

            3c75314714619f5b55e25769e0985d497f0062f2

            SHA256

            eeb23424586eb7bc62b51b19f1719c6571b71b167f4d63f25984b7f5c5436db1

            SHA512

            f8cb8098dc8d478854cddddeac3396bc7b602c4d0449491ecacea7b9106672f36b55b377c724dc6881bee407c6b6c5c3352495ed4b852dd578aa3643a43e37c0

          • C:\ProgramData\FIJKEHJJDAAK\HDBGHD

            Filesize

            10KB

            MD5

            b8638d6c7e15e7bf2ebbf58e3007aedb

            SHA1

            a5e2ff904f0b3ee4a7a43966a69806d7ebb02452

            SHA256

            9ec49336ffbe79b410b811702a0910be82b270459e0d9e9eb006676ce84a9a42

            SHA512

            2e373b1115ab29b03e15ee6b936a59af9412869171f8a168d5cbf5ae79e5b93af9c5c67f5a207174e13421895deb76499b2a9551dabb4a8d855c0c8139f7b205

          • C:\ProgramData\FIJKEHJJDAAK\JJECFI

            Filesize

            114KB

            MD5

            b90a70d7e385373c8edebf0c3ff549f0

            SHA1

            cdf4fb34071fc79c144fbd3a4d4a58c703701841

            SHA256

            51e234c09098ea32dd1422ce8304a043ace2962e24528988df220cc4f5358191

            SHA512

            b7c2f2a46d624148629e306b7298b4ed6eb5742c79458f84c5d70dd8e9159fd72996556988156bf6649d00e90b98cd9311ae037733a14abd7adb3eed8327ac3e

          • C:\ProgramData\freebl3.dll

            Filesize

            669KB

            MD5

            550686c0ee48c386dfcb40199bd076ac

            SHA1

            ee5134da4d3efcb466081fb6197be5e12a5b22ab

            SHA256

            edd043f2005dbd5902fc421eabb9472a7266950c5cbaca34e2d590b17d12f5fa

            SHA512

            0b7f47af883b99f9fbdc08020446b58f2f3fa55292fd9bc78fc967dd35bdd8bd549802722de37668cc89ede61b20359190efbfdf026ae2bdc854f4740a54649e

          • C:\ProgramData\mozglue.dll

            Filesize

            593KB

            MD5

            c8fd9be83bc728cc04beffafc2907fe9

            SHA1

            95ab9f701e0024cedfbd312bcfe4e726744c4f2e

            SHA256

            ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

            SHA512

            fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

          • C:\ProgramData\msvcp140.dll

            Filesize

            439KB

            MD5

            5ff1fca37c466d6723ec67be93b51442

            SHA1

            34cc4e158092083b13d67d6d2bc9e57b798a303b

            SHA256

            5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062

            SHA512

            4802ef62630c521d83a1d333969593fb00c9b38f82b4d07f70fbd21f495fea9b3f67676064573d2c71c42bc6f701992989742213501b16087bb6110e337c7546

          • C:\ProgramData\nss3.dll

            Filesize

            2.0MB

            MD5

            1cc453cdf74f31e4d913ff9c10acdde2

            SHA1

            6e85eae544d6e965f15fa5c39700fa7202f3aafe

            SHA256

            ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

            SHA512

            dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

          • C:\ProgramData\softokn3.dll

            Filesize

            251KB

            MD5

            4e52d739c324db8225bd9ab2695f262f

            SHA1

            71c3da43dc5a0d2a1941e874a6d015a071783889

            SHA256

            74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a

            SHA512

            2d4168a69082a9192b9248f7331bd806c260478ff817567df54f997d7c3c7d640776131355401e4bdb9744e246c36d658cb24b18de67d8f23f10066e5fe445f6

          • C:\ProgramData\vcruntime140.dll

            Filesize

            78KB

            MD5

            a37ee36b536409056a86f50e67777dd7

            SHA1

            1cafa159292aa736fc595fc04e16325b27cd6750

            SHA256

            8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825

            SHA512

            3a7c260646315cf8c01f44b2ec60974017496bd0d80dd055c7e43b707cadba2d63aab5e0efd435670aa77886ed86368390d42c4017fc433c3c4b9d1c47d0f356

          • C:\Users\AdminGDHCGDGIEB.exe

            Filesize

            381KB

            MD5

            f5a1956973dce107d4c0b6267ce88870

            SHA1

            79a19513d7c9cff939f2881c4172a05dbaef735b

            SHA256

            7b794c5bdb820791f0359da90a9a4f258412b8feef9c6e6a0411f6aead9d3a04

            SHA512

            f42180c75c0ae8dc083c6fff98a66c0d875fadb400d7945816ea330a54777632a3a7752d3e78b90e45f58ed3d04d6708b1dcea51d82711356e6d14e405a7c579

          • C:\Users\AdminKKJJEBFCGD.exe

            Filesize

            413KB

            MD5

            76b81bbaa929e92a0885267869e62fdf

            SHA1

            16ee3b53fd9d0fe6bd7fc75ac961a21bfd9fae51

            SHA256

            f59f82ea9cbaa95389bbec5f80b427daa2e575c2827eaaede006590810809f9c

            SHA512

            67d4fb8ed2c767871a307c54fddc86fa4df07ccfa943eeb61e6e8960c4038fb8a38118a69cbb7a6364dde6c11fd3139b8c5f91e029a437dad0d39202383ac3cd

          • memory/1384-100-0x0000000000830000-0x0000000000898000-memory.dmp

            Filesize

            416KB

          • memory/1968-162-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-145-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-163-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-146-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-202-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-201-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-193-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-131-0x00000000224F0000-0x000000002274F000-memory.dmp

            Filesize

            2.4MB

          • memory/1968-194-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-130-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-113-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-118-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-116-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/1968-129-0x0000000000400000-0x0000000000676000-memory.dmp

            Filesize

            2.5MB

          • memory/4624-110-0x0000000073660000-0x0000000073E11000-memory.dmp

            Filesize

            7.7MB

          • memory/4624-91-0x0000000000790000-0x00000000007F0000-memory.dmp

            Filesize

            384KB

          • memory/4624-93-0x0000000073660000-0x0000000073E11000-memory.dmp

            Filesize

            7.7MB

          • memory/4624-92-0x000000007366E000-0x000000007366F000-memory.dmp

            Filesize

            4KB

          • memory/5008-2-0x0000000074280000-0x0000000074A31000-memory.dmp

            Filesize

            7.7MB

          • memory/5008-1-0x0000000000FD0000-0x0000000001008000-memory.dmp

            Filesize

            224KB

          • memory/5008-0-0x000000007428E000-0x000000007428F000-memory.dmp

            Filesize

            4KB

          • memory/5008-12-0x0000000074280000-0x0000000074A31000-memory.dmp

            Filesize

            7.7MB

          • memory/5008-5-0x0000000074280000-0x0000000074A31000-memory.dmp

            Filesize

            7.7MB

          • memory/5620-9-0x0000000000400000-0x0000000000643000-memory.dmp

            Filesize

            2.3MB

          • memory/5620-6-0x0000000000400000-0x0000000000643000-memory.dmp

            Filesize

            2.3MB

          • memory/5620-10-0x0000000000400000-0x0000000000643000-memory.dmp

            Filesize

            2.3MB

          • memory/5620-103-0x0000000000400000-0x0000000000643000-memory.dmp

            Filesize

            2.3MB

          • memory/5620-13-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/6036-106-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

          • memory/6036-108-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

          • memory/6036-104-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB