Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 07:22

General

  • Target
    498a7a01bf758c22edce4242d2a44960.exe
  • Size 854KB
  • Sample240525-h68rqaad21
  • SHA256 b2506074e22cbbd6c7a54b64c258ca48dd5a06bebf0830cc63596f1034045bfa
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • vidar

C2
  • https://88.198.124.82

  • https://steamcommunity.com/profiles/76561199689717899

  • https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Safari/605.1.15 Ddg/17.4.1

Signatures

  • Detect Vidar Stealer 10 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 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 local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\498a7a01bf758c22edce4242d2a44960.exe
    "C:\Users\Admin\AppData\Local\Temp\498a7a01bf758c22edce4242d2a44960.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3176
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k copy Apparent Apparent.cmd & Apparent.cmd & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3340
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2104
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "wrsa.exe opssvc.exe"
        3⤵
          PID:4536
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:2668
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
          3⤵
            PID:1092
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 209835
            3⤵
              PID:4016
            • C:\Windows\SysWOW64\findstr.exe
              findstr /V "BARNLUGGAGEANYTIM" Transcripts
              3⤵
                PID:404
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c copy /b Mel + Avoid + Online + Prove 209835\q
                3⤵
                  PID:2680
                • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\209835\Buy.pif
                  209835\Buy.pif 209835\q
                  3⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SendNotifyMessage
                  • Suspicious use of WriteProcessMemory
                  PID:1520
                  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\209835\Buy.pif
                    C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\209835\Buy.pif
                    4⤵
                    • Executes dropped EXE
                    • Checks processor information in registry
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2128
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 5 127.0.0.1
                  3⤵
                  • Runs ping.exe
                  PID:2044
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4120 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8
              1⤵
                PID:2828
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3808 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:3
                1⤵
                  PID:2416

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      SCT Auditing Pending Reports

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
                      • Size 2B
                      • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                      • MD5 SHA1 SHA512

                      Sdch Dictionaries

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
                      • Size 40B
                      • SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
                      • MD5 SHA1 SHA512

                      Buy.pif

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\209835\Buy.pif
                      • Size 915KB
                      • SHA256 8498900e57a490404e7ec4d8159bee29aed5852ae88bd484141780eaadb727bb
                      • MD5 SHA1 SHA512 SSDEEP

                      q

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\209835\q
                      • Size 347KB
                      • SHA256 5ceb6a47114ad7027f40b0d33ecc4a3c101cd843e825c06b15e7bd73455d2b26
                      • MD5 SHA1 SHA512 SSDEEP

                      Anchor

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Anchor
                      • Size 19KB
                      • SHA256 15e238f0cc601e974c899a9f1709ad0583d856c0e09fb1ae9491f250cd864c16
                      • MD5 SHA1 SHA512 SSDEEP

                      Apparent

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Apparent
                      • Size 24KB
                      • SHA256 9f904098b3b965b0f383f097102982637107bc04f5588bb2d6ecd33551aa249d
                      • MD5 SHA1 SHA512 SSDEEP

                      Avoid

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Avoid
                      • Size 67KB
                      • SHA256 e41445bcb2b87065aaf10471ba1d94ba25c34d0bfb94a034b006d0762b809a62
                      • MD5 SHA1 SHA512 SSDEEP

                      Burden

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Burden
                      • Size 66KB
                      • SHA256 707ebfe234767c1c62fd5c17d58e10f7e0bc233aa9c9406eeb6eba68cc0e22c4
                      • MD5 SHA1 SHA512 SSDEEP

                      Comment

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Comment
                      • Size 53KB
                      • SHA256 6a9d9ad65c58d9a359d84c73c7a60e3cca3326a7ee14f0d6a84b1ff9c152082e
                      • MD5 SHA1 SHA512 SSDEEP

                      Cooperation

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Cooperation
                      • Size 64KB
                      • SHA256 f9b5fe82e99db096ad9b233a25b7bc70b3cd613bc5c2ac8ee65de037c7c65aab
                      • MD5 SHA1 SHA512 SSDEEP

                      Defeat

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Defeat
                      • Size 51KB
                      • SHA256 611f7148a76fae9bcc5d2075dd614da0450202edf561bab91565ab123570671c
                      • MD5 SHA1 SHA512 SSDEEP

                      Defining

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Defining
                      • Size 12KB
                      • SHA256 c2b6356e08c317b39beae721dd860f1db3999dd2ede310b2c239c3b968cce912
                      • MD5 SHA1 SHA512 SSDEEP

                      Donation

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Donation
                      • Size 49KB
                      • SHA256 3d713587907eeb8bf06c0283dc234fb9dd9451ab9b597a75ae5ef960fdf38a1e
                      • MD5 SHA1 SHA512 SSDEEP

                      Fame

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Fame
                      • Size 36KB
                      • SHA256 50719294e27ee75b1a4adec7414bb70fec7a8752d53e208f60a585ef88c06b0d
                      • MD5 SHA1 SHA512 SSDEEP

                      Gore

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Gore
                      • Size 63KB
                      • SHA256 79cee99cc90423f33223e679cb999dc1e9da0d46817764bad47a551557f07a1e
                      • MD5 SHA1 SHA512 SSDEEP

                      Hampton

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Hampton
                      • Size 41KB
                      • SHA256 2611e74b00969844d134d89835110f42450bdb1038ad9212a043dc03a4a16f4f
                      • MD5 SHA1 SHA512 SSDEEP

                      Handle

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Handle
                      • Size 29KB
                      • SHA256 5dbf8f90f3a0f57161250f4474507d9c763c918c1cae328e8f46eea026fd248c
                      • MD5 SHA1 SHA512 SSDEEP

                      Keen

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Keen
                      • Size 62KB
                      • SHA256 f6dacd2fb67de305665f84a25fd2f0c85c9abef75334498735924e1eb8c40a96
                      • MD5 SHA1 SHA512 SSDEEP

                      Meeting

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Meeting
                      • Size 35KB
                      • SHA256 d49e2fafdc343c80a370e407aef49f092d98a1cde4313990b555b3ff602d14b4
                      • MD5 SHA1 SHA512 SSDEEP

                      Mel

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Mel
                      • Size 25KB
                      • SHA256 6ab509c23bf8ad2f0cbbafe0f521809aea700fac53976854ab9db3306facf04a
                      • MD5 SHA1 SHA512 SSDEEP

                      Online

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Online
                      • Size 138KB
                      • SHA256 271c4cff3e2eb78badfb87005aba3876d182c18ae98993e4309908041fa3a6eb
                      • MD5 SHA1 SHA512 SSDEEP

                      Principal

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Principal
                      • Size 20KB
                      • SHA256 c8592bf3b25774e06014b03e180c978b62abb0449842c5965b1b93b006dc3d69
                      • MD5 SHA1 SHA512 SSDEEP

                      Prove

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Prove
                      • Size 117KB
                      • SHA256 48fd8dfc163008e4968654073afa8c186de9d95460bbc2b60d3aa5529947e162
                      • MD5 SHA1 SHA512 SSDEEP

                      Pussy

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Pussy
                      • Size 42KB
                      • SHA256 d62002a7c054dcf9daf35c311c72f2494786cceb3c968f52210e5f3a0acbea97
                      • MD5 SHA1 SHA512 SSDEEP

                      Shift

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Shift
                      • Size 44KB
                      • SHA256 18e4cc79ad57a1b0ce2e946ef97f19780d26aca2e944accefa7c99bd40a13c69
                      • MD5 SHA1 SHA512 SSDEEP

                      Specs

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Specs
                      • Size 26KB
                      • SHA256 3bba68698818d8f273c1440c12d3e281a697ad7fade35fb859467480b56e3ad8
                      • MD5 SHA1 SHA512 SSDEEP

                      Transcripts

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Transcripts
                      • Size 158B
                      • SHA256 c0e947ef64b02398cbbc8d1080de78e7a884500e06e3fba36c1b13f39b49e28f
                      • MD5 SHA1 SHA512

                      Ukraine

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Ukraine
                      • Size 59KB
                      • SHA256 7060bbb1549dd936219fcfdbe47dc6089202e4b69368db82521c862b05b7f6c7
                      • MD5 SHA1 SHA512 SSDEEP

                      Uruguay

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Uruguay
                      • Size 64KB
                      • SHA256 55e80cbc262a725e7f7ef2d7bbf2ce4a9c5d2e1e429e9930d1baae1df24b97ca
                      • MD5 SHA1 SHA512 SSDEEP

                      Var

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Var
                      • Size 8KB
                      • SHA256 9f1dcbc35c350d6027f98be0f5c8b43b42ca52b7604459c0c42be3aa88913d47
                      • MD5 SHA1 SHA512 SSDEEP

                      Wearing

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Wearing
                      • Size 12KB
                      • SHA256 4e09ea0f8526cdaea7ca21c5f5abe5023a2447e3c9e28ce99fb6119c66de6b42
                      • MD5 SHA1 SHA512 SSDEEP

                      Webcam

                      • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Webcam
                      • Size 60KB
                      • SHA256 7dc3f42e99fdeb3c242cebb74e554f9d8b0496902e4cc0c6e21ca95c6eb7e74b
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/2128-577-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-579-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-580-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-582-0x0000000019820000-0x0000000019A7F000-memory.dmp

                      memory/2128-596-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-597-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-613-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-575-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-620-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-574-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-639-0x0000000000A00000-0x0000000000C46000-memory.dmp

                      memory/2128-640-0x0000000000A00000-0x0000000000C46000-memory.dmp