Analysis

  • max time kernel
    169s
  • max time network
    205s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 01:50

General

  • Target
    @#Full_Istaller_PcSetup_88559_????????^$/Setup.exe
  • Size 670.0MB
  • Sample240615-b9dbnaveqa
  • SHA256 df0927eb284b3604c55cbf9ef4b0b2420a5618c555529b6bbda043266732e557
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 9 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 9 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 8 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 9 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 9 IoCs
  • Detects executables manipulated with Fody 1 IoCs
  • 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.

  • 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\@#Full_Istaller_PcSetup_88559_________^$\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\@#Full_Istaller_PcSetup_88559_________^$\Setup.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3204
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k copy Revenues Revenues.cmd & Revenues.cmd & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3992
      • C:\Windows\SysWOW64\tasklist.exe
        tasklist
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2512
      • C:\Windows\SysWOW64\findstr.exe
        findstr /I "wrsa.exe opssvc.exe"
        3⤵
          PID:4256
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:3956
        • C:\Windows\SysWOW64\findstr.exe
          findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
          3⤵
            PID:1196
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 366279
            3⤵
              PID:540
            • C:\Windows\SysWOW64\findstr.exe
              findstr /V "RingtoneRentMicrosoftFocuses" Editors
              3⤵
                PID:552
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c copy /b Isle 366279\m
                3⤵
                  PID:3196
                • C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
                  366279\Suspect.pif 366279\m
                  3⤵
                  • Executes dropped EXE
                  PID:1744
                • C:\Windows\SysWOW64\timeout.exe
                  timeout 5
                  3⤵
                  • Delays execution with timeout.exe
                  PID:4504
            • C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
              C:\Users\Admin\AppData\Local\Temp\366279\Suspect.pif
              1⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:2872
              • C:\ProgramData\IDGHDGIDAK.exe
                "C:\ProgramData\IDGHDGIDAK.exe"
                2⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1796
                • C:\Windows\SysWOW64\ftp.exe
                  C:\Windows\SysWOW64\ftp.exe
                  3⤵
                    PID:400
                • C:\ProgramData\KKJKKJJKJE.exe
                  "C:\ProgramData\KKJKKJJKJE.exe"
                  2⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:5056
                  • C:\Windows\SysWOW64\ftp.exe
                    C:\Windows\SysWOW64\ftp.exe
                    3⤵
                      PID:416
                • 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=2360 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:3
                  1⤵
                    PID:4944

                  Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        mozglue.dll

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

                        nss3.dll

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

                        IDGHDGIDAK.exe

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

                        KKJKKJJKJE.exe

                        • Path C:\ProgramData\KKJKKJJKJE.exe
                        • Size 2.3MB
                        • SHA256 5706c6f5421a6a34fdcb67e9c9e71283c8fc1c33499904519cbdc6a21e6b071c
                        • 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

                        9f247c79

                        • Path C:\Users\Admin\AppData\Local\Temp\9f247c79
                        • Size 951KB
                        • SHA256 d8617477c800cc10f9b52e90b885117a27266831fb5033647b6b6bd6025380a8
                        • 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

                        a29eaf82

                        • Path C:\Users\Admin\AppData\Local\Temp\a29eaf82
                        • Size 1.1MB
                        • SHA256 e2aaaa1a0431aab1616e2b612e9b68448107e6ce71333f9c0ec1763023b72b2a
                        • MD5 SHA1 SHA512 SSDEEP

                        memory/1796-692-0x0000000000F20000-0x0000000001433000-memory.dmp

                        memory/1796-717-0x00007FFB034B0000-0x00007FFB036A5000-memory.dmp

                        memory/1796-716-0x0000000072E70000-0x0000000072FEB000-memory.dmp

                        memory/2872-596-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-664-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-597-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                        memory/2872-595-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-663-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-587-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-634-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-617-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-633-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/2872-636-0x0000000001070000-0x00000000017BA000-memory.dmp

                        memory/5056-703-0x0000000000D50000-0x0000000000F98000-memory.dmp

                        memory/5056-709-0x0000000072E70000-0x0000000072FEB000-memory.dmp

                        memory/5056-710-0x00007FFB034B0000-0x00007FFB036A5000-memory.dmp