Analysis

  • max time kernel
    159s
  • max time network
    178s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    17/04/2024, 11:58

General

  • Target
    BetaUnfated.exe
  • Size 139.8MB
  • Sample240417-n47drsfe41
  • SHA256 705dc4d21549b6603587ef120e0849814871bdd5fcd10c5fb6235e0ff779b6df
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Epsilon Stealer

    Information stealer.

  • Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 3 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Identifies Wine through registry keys 2 TTPs 1 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BetaUnfated.exe
    "C:\Users\Admin\AppData\Local\Temp\BetaUnfated.exe"
    1⤵
    • Enumerates VirtualBox registry keys
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Checks for VirtualBox DLLs, possible anti-VM trick
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "wmic CsProduct Get UUID"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2712
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic CsProduct Get UUID
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2536
    • C:\Users\Admin\AppData\Local\Temp\BetaUnfated.exe
      "C:\Users\Admin\AppData\Local\Temp\BetaUnfated.exe" --type=gpu-process --user-data-dir="C:\Users\Admin\AppData\Roaming\BetaUnfated" --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1128 --field-trial-handle=1220,7876842049568711027,6430637027676635897,131072 --disable-features=PlzServiceWorker,SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand /prefetch:2
      2⤵
        PID:2428
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:812
        • C:\Windows\system32\reg.exe
          C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions"
          3⤵
            PID:864
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1996
          • C:\Windows\system32\reg.exe
            C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath
            3⤵
              PID:2180
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "tasklist"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1988
            • C:\Windows\system32\tasklist.exe
              tasklist
              3⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:2412
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2716
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1040
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "wmic path win32_VideoController get name"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:940
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic path win32_VideoController get name
              3⤵
              • Detects videocard installed
              PID:1620
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /d /s /c "cmd /c chcp 65001>nul && netsh wlan show profiles"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2024
            • C:\Windows\system32\cmd.exe
              cmd /c chcp 65001
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:528
              • C:\Windows\system32\chcp.com
                chcp 65001
                4⤵
                  PID:468
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                3⤵
                  PID:3056
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v WindowsUpdater /t REG_SZ /d C:\Users\Admin\AppData\Local\Microsoft\Windows\0\WindowsUpdater.exe /f"
                2⤵
                  PID:1356
                  • C:\Windows\system32\reg.exe
                    C:\Windows\system32\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v WindowsUpdater /t REG_SZ /d C:\Users\Admin\AppData\Local\Microsoft\Windows\0\WindowsUpdater.exe /f
                    3⤵
                    • Adds Run key to start application
                    PID:1148
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /d /s /c "tasklist"
                  2⤵
                    PID:2084
                    • C:\Windows\system32\tasklist.exe
                      tasklist
                      3⤵
                      • Enumerates processes with tasklist
                      PID:1444

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

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                      Downloads

                      All Autofill Data.txt

                      • Path C:\Users\Admin\AppData\Local\Temp\epsilon-Admin\AutoFill Data\All Autofill Data.txt
                      • Size 240B
                      • SHA256 453478914b72d9056472fb1e44c69606c62331452f47a1f3c02190f26501785c
                      • MD5 SHA1 SHA512

                      All Credit Cards.txt

                      • Path C:\Users\Admin\AppData\Local\Temp\epsilon-Admin\Credit Cards\All Credit Cards.txt
                      • Size 231B
                      • SHA256 753b99d2b4e8c58bfd10995d0c2c19255fe9c8f53703bb27d1b6f76f1f4e83cc
                      • MD5 SHA1 SHA512

                      CURRENT~RFf76f892.TMP

                      • Path C:\Users\Admin\AppData\Roaming\BetaUnfated\Local Storage\leveldb\CURRENT~RFf76f892.TMP
                      • Size 16B
                      • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                      • MD5 SHA1 SHA512

                      6afc665f-bc20-4d94-bd17-991bc500386a.tmp.node

                      • Path \Users\Admin\AppData\Local\Temp\6afc665f-bc20-4d94-bd17-991bc500386a.tmp.node
                      • Size 2.7MB
                      • SHA256 7c999c84852b1f46a48f75b130fea445280d7032a56359dffecf36730366abc5
                      • MD5 SHA1 SHA512 SSDEEP

                      81a62b6a-6118-453b-bf12-70a63d4fdcbf.tmp.node

                      • Path \Users\Admin\AppData\Local\Temp\81a62b6a-6118-453b-bf12-70a63d4fdcbf.tmp.node
                      • Size 163KB
                      • SHA256 8d6f5cab1d6a99ac49772080c6f383f33a9bb983e0f8d02d0f3de4b2bdd26215
                      • MD5 SHA1 SHA512 SSDEEP

                      8648bd85-63aa-4059-8c7f-934ff7589c44.tmp.node

                      • Path \Users\Admin\AppData\Local\Temp\8648bd85-63aa-4059-8c7f-934ff7589c44.tmp.node
                      • Size 652KB
                      • SHA256 b314ee85e8f31cb13b5ed4d602615814cf1615646dc76b8eec7dc27551d8ba33
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/2428-9-0x0000000000060000-0x0000000000061000-memory.dmp

                      memory/2668-44-0x00000000024A0000-0x00000000024A1000-memory.dmp