Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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 12 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

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

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 58 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\498a7a01bf758c22edce4242d2a44960.exe
    "C:\Users\Admin\AppData\Local\Temp\498a7a01bf758c22edce4242d2a44960.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1368
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k copy Apparent Apparent.cmd & Apparent.cmd & exit
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2632
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:3048
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "wrsa.exe opssvc.exe"
        3⤵
          PID:3044
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:3060
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
          3⤵
            PID:3020
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 209835
            3⤵
              PID:1740
            • C:\Windows\SysWOW64\findstr.exe
              findstr /V "BARNLUGGAGEANYTIM" Transcripts
              3⤵
                PID:2756
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c copy /b Mel + Avoid + Online + Prove 209835\q
                3⤵
                  PID:1240
                • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\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:2056
                  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\209835\Buy.pif
                    "C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\209835\Buy.pif"
                    4⤵
                    • Executes dropped EXE
                    • Checks processor information in registry
                    • Modifies system certificate store
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of WriteProcessMemory
                    PID:1340
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\System32\cmd.exe" /c start "" "C:\ProgramData\AAAEBAFBGI.exe"
                      5⤵
                        PID:3044
                      • C:\Windows\SysWOW64\cmd.exe
                        "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\209835\Buy.pif" & rd /s /q "C:\ProgramData\AFHDHCAAKECF" & exit
                        5⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1628
                        • C:\Windows\SysWOW64\timeout.exe
                          timeout /t 10
                          6⤵
                          • Delays execution with timeout.exe
                          PID:2392
                  • C:\Windows\SysWOW64\PING.EXE
                    ping -n 5 127.0.0.1
                    3⤵
                    • Runs ping.exe
                    PID:1932

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    q

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

                    Anchor

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

                    Apparent

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

                    Avoid

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

                    Burden

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

                    Comment

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

                    Cooperation

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

                    Defeat

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

                    Defining

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

                    Donation

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

                    Fame

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

                    Gore

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

                    Hampton

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

                    Handle

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

                    Keen

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

                    Meeting

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

                    Mel

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

                    Online

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

                    Principal

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

                    Prove

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

                    Pussy

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

                    Shift

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

                    Specs

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

                    Transcripts

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

                    Ukraine

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

                    Uruguay

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

                    Var

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

                    Wearing

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

                    Webcam

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

                    Cab84DB.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\Cab84DB.tmp
                    • Size 68KB
                    • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
                    • MD5 SHA1 SHA512 SSDEEP

                    Tar858A.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\Tar858A.tmp
                    • Size 177KB
                    • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
                    • MD5 SHA1 SHA512 SSDEEP

                    Buy.pif

                    • Path \Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\209835\Buy.pif
                    • Size 915KB
                    • SHA256 8498900e57a490404e7ec4d8159bee29aed5852ae88bd484141780eaadb727bb
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/1340-576-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-579-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-577-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-736-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-755-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-775-0x000000001B000000-0x000000001B25F000-memory.dmp

                    memory/1340-789-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-808-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-973-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-995-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-996-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-1015-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-1016-0x00000000005F0000-0x0000000000836000-memory.dmp

                    memory/1340-1035-0x00000000005F0000-0x0000000000836000-memory.dmp