Analysis

  • max time kernel
    159s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/06/2024, 18:25

General

  • Target
    @^NewFile_PCSetup_77665_????????_^$/Setup.exe
  • Size 670.0MB
  • Sample240617-w2pd6starm
  • SHA256 df0927eb284b3604c55cbf9ef4b0b2420a5618c555529b6bbda043266732e557
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 12 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

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

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 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.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 34 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3372
      • C:\Users\Admin\AppData\Local\Temp\@^NewFile_PCSetup_77665__________^$\Setup.exe
        "C:\Users\Admin\AppData\Local\Temp\@^NewFile_PCSetup_77665__________^$\Setup.exe"
        2⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:4464
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k copy Revenues Revenues.cmd & Revenues.cmd & exit
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:216
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:3404
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa.exe opssvc.exe"
            4⤵
              PID:3480
            • C:\Windows\SysWOW64\tasklist.exe
              tasklist
              4⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:1088
            • C:\Windows\SysWOW64\findstr.exe
              findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
              4⤵
                PID:4484
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c md 366279
                4⤵
                  PID:3700
                • C:\Windows\SysWOW64\findstr.exe
                  findstr /V "RingtoneRentMicrosoftFocuses" Editors
                  4⤵
                    PID:4008
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c copy /b Isle 366279\m
                    4⤵
                      PID:2568
                    • 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:1512
                    • C:\Windows\SysWOW64\timeout.exe
                      timeout 5
                      4⤵
                      • Delays execution with timeout.exe
                      PID:2788
                • 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
                  • Loads dropped DLL
                  • Checks processor information in registry
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:816
                  • C:\ProgramData\GCAKKECAEG.exe
                    "C:\ProgramData\GCAKKECAEG.exe"
                    3⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of WriteProcessMemory
                    PID:4640
                    • C:\Windows\SysWOW64\ftp.exe
                      C:\Windows\SysWOW64\ftp.exe
                      4⤵
                        PID:1692
                    • C:\ProgramData\CFIIIJJKJK.exe
                      "C:\ProgramData\CFIIIJJKJK.exe"
                      3⤵
                      • Executes dropped EXE
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of WriteProcessMemory
                      PID:4316
                      • C:\Windows\SysWOW64\ftp.exe
                        C:\Windows\SysWOW64\ftp.exe
                        4⤵
                          PID:784
                  • 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=4156 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
                    1⤵
                      PID:2624
                    • 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=3248 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:3
                      1⤵
                        PID:3732

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            CFIIIJJKJK.exe

                            • Path C:\ProgramData\CFIIIJJKJK.exe
                            • Size 2.3MB
                            • SHA256 5706c6f5421a6a34fdcb67e9c9e71283c8fc1c33499904519cbdc6a21e6b071c
                            • MD5 SHA1 SHA512 SSDEEP

                            GCAKKECAEG.exe

                            • Path C:\ProgramData\GCAKKECAEG.exe
                            • Size 8.6MB
                            • SHA256 376e1802b979514ba0e9c73933a8c6a09dd3f1d2a289f420c2202e64503d08a7
                            • MD5 SHA1 SHA512 SSDEEP

                            mozglue.dll

                            • Path C:\ProgramData\IEHCBAFIDAEC\mozglue.dll
                            • Size 593KB
                            • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
                            • MD5 SHA1 SHA512 SSDEEP

                            nss3.dll

                            • Path C:\ProgramData\IEHCBAFIDAEC\nss3.dll
                            • Size 2.0MB
                            • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
                            • MD5 SHA1 SHA512 SSDEEP

                            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

                            Suspect.pif

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

                            82baa4cf

                            • Path C:\Users\Admin\AppData\Local\Temp\82baa4cf
                            • Size 951KB
                            • SHA256 d8617477c800cc10f9b52e90b885117a27266831fb5033647b6b6bd6025380a8
                            • MD5 SHA1 SHA512 SSDEEP

                            8355a088

                            • Path C:\Users\Admin\AppData\Local\Temp\8355a088
                            • Size 1.1MB
                            • SHA256 e2aaaa1a0431aab1616e2b612e9b68448107e6ce71333f9c0ec1763023b72b2a
                            • 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/816-658-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-591-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-580-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-629-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-613-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-581-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-659-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-612-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-717-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-630-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-592-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                            memory/816-716-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-590-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/816-583-0x0000000000F00000-0x000000000164A000-memory.dmp

                            memory/4316-710-0x0000000072DB0000-0x0000000072F2B000-memory.dmp

                            memory/4316-712-0x00007FFC5D0F0000-0x00007FFC5D2E5000-memory.dmp

                            memory/4316-698-0x0000000000680000-0x00000000008C8000-memory.dmp

                            memory/4640-708-0x0000000072DB0000-0x0000000072F2B000-memory.dmp

                            memory/4640-711-0x00007FFC5D0F0000-0x00007FFC5D2E5000-memory.dmp

                            memory/4640-682-0x00000000006B0000-0x0000000000BC3000-memory.dmp