Analysis

  • max time kernel
    66s
  • max time network
    71s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2024, 01:20

General

  • Target
    @^NewFile_PCSetup_99553_????????_^$/Setup.exe
  • Size 670.0MB
  • Sample240616-bp7prstbph
  • SHA256 df0927eb284b3604c55cbf9ef4b0b2420a5618c555529b6bbda043266732e557
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 4 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Detects Windows executables referencing non-Windows User-Agents 4 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 4 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 4 IoCs
  • Checks computer location settings 2 TTPs 2 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.

  • 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 2 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3600
      • C:\Users\Admin\AppData\Local\Temp\@^NewFile_PCSetup_99553__________^$\Setup.exe
        "C:\Users\Admin\AppData\Local\Temp\@^NewFile_PCSetup_99553__________^$\Setup.exe"
        2⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:1604
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k copy Revenues Revenues.cmd & Revenues.cmd & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1580
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:1324
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
              PID:672
            • C:\Windows\SysWOW64\tasklist.exe
              tasklist
              4⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:2656
            • C:\Windows\SysWOW64\findstr.exe
              findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
              4⤵
                PID:5072
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c md 366279
                4⤵
                  PID:1452
                • C:\Windows\SysWOW64\findstr.exe
                  findstr /V "RingtoneRentMicrosoftFocuses" Editors
                  4⤵
                    PID:3856
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c copy /b Isle 366279\m
                    4⤵
                      PID:1028
                    • C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
                      366279\Suspect.pif 366279\m
                      4⤵
                      • Suspicious use of NtCreateUserProcessOtherParentProcess
                      • Executes dropped EXE
                      • Suspicious use of SetThreadContext
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of FindShellTrayWindow
                      • Suspicious use of SendNotifyMessage
                      • Suspicious use of WriteProcessMemory
                      PID:380
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout 5
                      4⤵
                      • Delays execution with timeout.exe
                      PID:3292
                • C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
                  C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
                  2⤵
                  • Checks computer location settings
                  • Executes dropped EXE
                  • Checks processor information in registry
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:3852
                  • C:\Windows\SysWOW64\cmd.exe
                    "C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif" & rd /s /q "C:\ProgramData\FHIDBKFCAAEB" & exit
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:420
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout /t 10
                      4⤵
                      • Delays execution with timeout.exe
                      PID:988

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    Suspect.pif

                    • Path C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
                    • Size 915KB
                    • SHA256 8498900e57a490404e7ec4d8159bee29aed5852ae88bd484141780eaadb727bb
                    • MD5 SHA1 SHA512 SSDEEP

                    Arg

                    • Path C:\Users\Admin\AppData\Local\Temp\Arg
                    • Size 44KB
                    • SHA256 3e7706b03275975037e49a1a7f29e67bce822086f90630948d9528d9c4b68182
                    • MD5 SHA1 SHA512 SSDEEP

                    Atlanta

                    • Path C:\Users\Admin\AppData\Local\Temp\Atlanta
                    • Size 59KB
                    • SHA256 61460bebb1a3ada4d197a869a8d9637eaf03656b32509e5a4606240d06ab3361
                    • MD5 SHA1 SHA512 SSDEEP

                    Broadway

                    • Path C:\Users\Admin\AppData\Local\Temp\Broadway
                    • Size 54KB
                    • SHA256 dd57cfa1ec84ac01cd4aab6dd18046b3a49daf0445ae29d6695c4a25c0bcd59d
                    • MD5 SHA1 SHA512 SSDEEP

                    Bt

                    • Path C:\Users\Admin\AppData\Local\Temp\Bt
                    • Size 62KB
                    • SHA256 6e4b33cc9c80b969af96b31b1e95588f9cf79e3670951c63172d60d4e1324f95
                    • MD5 SHA1 SHA512 SSDEEP

                    Choose

                    • Path C:\Users\Admin\AppData\Local\Temp\Choose
                    • Size 54KB
                    • SHA256 51982155baed7d5006ebc4446a417f320f8d754ec99911fcfa97ee5d37ce7756
                    • MD5 SHA1 SHA512 SSDEEP

                    Colleagues

                    • Path C:\Users\Admin\AppData\Local\Temp\Colleagues
                    • Size 21KB
                    • SHA256 621b098f227833dd3d62d4b181bf751e76d9688237ae27ba4475947863775103
                    • MD5 SHA1 SHA512 SSDEEP

                    Comparisons

                    • Path C:\Users\Admin\AppData\Local\Temp\Comparisons
                    • Size 25KB
                    • SHA256 6492ab6cd6f8f028f0824e026ed7c5401136f203f7de953bc60f61b32de4b41f
                    • MD5 SHA1 SHA512 SSDEEP

                    Editors

                    • Path C:\Users\Admin\AppData\Local\Temp\Editors
                    • Size 98B
                    • SHA256 70290025a0c87bcbd58ea8caf22e2dc0104e726ef3a7f9d9649758869def4189
                    • MD5 SHA1 SHA512

                    Gc

                    • Path C:\Users\Admin\AppData\Local\Temp\Gc
                    • Size 22KB
                    • SHA256 5bc7072917151653d7c40e272d8a95a86bbe7ad027eb30a811331a6f7df7ba51
                    • MD5 SHA1 SHA512 SSDEEP

                    Gis

                    • Path C:\Users\Admin\AppData\Local\Temp\Gis
                    • Size 57KB
                    • SHA256 bfa2b066ea73af4b0296b130a7c1927a4723864502ec646809aca415677844a6
                    • MD5 SHA1 SHA512 SSDEEP

                    Isle

                    • Path C:\Users\Admin\AppData\Local\Temp\Isle
                    • Size 5.7MB
                    • SHA256 84e53bfccccd03c162214a5b47741945c029afd23ec7ca307f1a66bc292ff3f8
                    • MD5 SHA1 SHA512 SSDEEP

                    July

                    • Path C:\Users\Admin\AppData\Local\Temp\July
                    • Size 46KB
                    • SHA256 fbbc13426ec699ffd56f6c53bc5e5259e25af602205c3d04beac1d4c578f85da
                    • MD5 SHA1 SHA512 SSDEEP

                    Marcus

                    • Path C:\Users\Admin\AppData\Local\Temp\Marcus
                    • Size 9KB
                    • SHA256 35d270b74aa68781c8e0bc3cd008718ce362fe9fd32c9ba1ad52b82fe37d07aa
                    • MD5 SHA1 SHA512 SSDEEP

                    Ns

                    • Path C:\Users\Admin\AppData\Local\Temp\Ns
                    • Size 20KB
                    • SHA256 71f45ed46fbd47494a7ecb9b31c07214d99133e35b974f5cf2beceabb639217d
                    • MD5 SHA1 SHA512 SSDEEP

                    Objects

                    • Path C:\Users\Admin\AppData\Local\Temp\Objects
                    • Size 36KB
                    • SHA256 ca682c8dcdca30548120b6d3194eebf36a9208bef0e9b611da828bd912a38260
                    • MD5 SHA1 SHA512 SSDEEP

                    Pct

                    • Path C:\Users\Admin\AppData\Local\Temp\Pct
                    • Size 56KB
                    • SHA256 41757cf277d0f40e48e2bfc6d963db78308fdfe0b054f67685e2a6473e25327b
                    • MD5 SHA1 SHA512 SSDEEP

                    Pda

                    • Path C:\Users\Admin\AppData\Local\Temp\Pda
                    • Size 14KB
                    • SHA256 5553cf5ed1753ab9749bb7f3057f0db8cb9f19b8f673fa977b038ca0fef8b3d1
                    • MD5 SHA1 SHA512 SSDEEP

                    Revenues

                    • Path C:\Users\Admin\AppData\Local\Temp\Revenues
                    • Size 23KB
                    • SHA256 a08c17ffca06c08afa2bf6ee98a09c08a2cc22a78596497635cb372d644f140d
                    • MD5 SHA1 SHA512 SSDEEP

                    Roy

                    • Path C:\Users\Admin\AppData\Local\Temp\Roy
                    • Size 66KB
                    • SHA256 ae7d0d86b3505a9c5c40bce3fd2554102e4f7d21aa5bdcc10451ce1019606629
                    • MD5 SHA1 SHA512 SSDEEP

                    Russian

                    • Path C:\Users\Admin\AppData\Local\Temp\Russian
                    • Size 11KB
                    • SHA256 8e6d9c7c4069ed6ea1fa346238ce48cf4479df04d1871e874f8c31e8ffede898
                    • MD5 SHA1 SHA512 SSDEEP

                    Serving

                    • Path C:\Users\Admin\AppData\Local\Temp\Serving
                    • Size 30KB
                    • SHA256 4e9de0fd78447786652a61ab8339253c2ec4c671d3a9dd956d3aca384a7ee4a1
                    • MD5 SHA1 SHA512 SSDEEP

                    Shaft

                    • Path C:\Users\Admin\AppData\Local\Temp\Shaft
                    • Size 8KB
                    • SHA256 dbf049319595a1a9faf8c8dbc70814c4562c4b9dd10f18e56b0cb83e37cdce5c
                    • MD5 SHA1 SHA512 SSDEEP

                    Shares

                    • Path C:\Users\Admin\AppData\Local\Temp\Shares
                    • Size 14KB
                    • SHA256 f0eba5c2f4c9998b0a491a7ec4fc953e601235709b3536ba1a928e8d5021d3f1
                    • MD5 SHA1 SHA512 SSDEEP

                    Talk

                    • Path C:\Users\Admin\AppData\Local\Temp\Talk
                    • Size 18KB
                    • SHA256 ae766919ddefe1340cea9b4ae3acfc041e8d079baa7fcf7dca59dfa3330c2d59
                    • MD5 SHA1 SHA512 SSDEEP

                    Terminology

                    • Path C:\Users\Admin\AppData\Local\Temp\Terminology
                    • Size 35KB
                    • SHA256 8c1e83e582baf2b8232a7ab8e81a751b45d260f4ff01bab2e42783d0e24d6b43
                    • MD5 SHA1 SHA512 SSDEEP

                    Thus

                    • Path C:\Users\Admin\AppData\Local\Temp\Thus
                    • Size 50KB
                    • SHA256 3ed1a12fde96bc80c62d54a0647000dff23a63b987fe8c3faa9e11b4357321a0
                    • MD5 SHA1 SHA512 SSDEEP

                    Tomorrow

                    • Path C:\Users\Admin\AppData\Local\Temp\Tomorrow
                    • Size 19KB
                    • SHA256 fa61763479671d7aa59798ccd20a2ae48102e24f2fdbc11e753c2141b3e0d135
                    • MD5 SHA1 SHA512 SSDEEP

                    Wallpaper

                    • Path C:\Users\Admin\AppData\Local\Temp\Wallpaper
                    • Size 28KB
                    • SHA256 42d670d3dd28bc4597b71a9373763029451d0da5efe1288c774f6b512fae9f0e
                    • MD5 SHA1 SHA512 SSDEEP

                    Wb

                    • Path C:\Users\Admin\AppData\Local\Temp\Wb
                    • Size 23KB
                    • SHA256 c74030e343c6fde4a1f1cf54010c186f9e80b457662bab5500848597c2e19504
                    • MD5 SHA1 SHA512 SSDEEP

                    Word

                    • Path C:\Users\Admin\AppData\Local\Temp\Word
                    • Size 34KB
                    • SHA256 cabef77014cb90d5e896c046830742852edb20adcd1da71f88f8f8805d476607
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/3852-580-0x0000000001400000-0x0000000001B4A000-memory.dmp

                    memory/3852-581-0x0000000001400000-0x0000000001B4A000-memory.dmp

                    memory/3852-583-0x0000000001400000-0x0000000001B4A000-memory.dmp

                    memory/3852-584-0x0000000001400000-0x0000000001B4A000-memory.dmp

                    memory/3852-586-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                    memory/3852-585-0x0000000001400000-0x0000000001B4A000-memory.dmp