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16/04/2025, 23:23

250416-3dkjmsw1ds 10

16/04/2025, 23:22

250416-3crxbs1ms5 10

16/04/2025, 23:16

250416-29atms1ly8 10

16/04/2025, 23:10

250416-2523bswzgx 10

16/04/2025, 21:45

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16/04/2025, 21:16

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16/04/2025, 21:06

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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250410-es
  • resource tags

    arch:x64arch:x86image:win11-20250410-eslocale:es-esos:windows11-21h2-x64systemwindows
  • submitted
    16/04/2025, 23:23

General

  • Target

    virusshare/3/VirusShare_4aa5734fe9c86184f931f4ddaf2d4d7b.exe

  • Size

    64KB

  • MD5

    4aa5734fe9c86184f931f4ddaf2d4d7b

  • SHA1

    a066ccad76f3c63d053cd68ac8692d4f4acf82ac

  • SHA256

    2e18ad3e470b97415beb2cdb8e3ef7510bad21f0a5add020a7f9343dd959eeaa

  • SHA512

    7355ffd3fc59af49af1d57f5327c7442a12c8e5ddc6ec9e176cc27fd4986cd6182f5f6ce91f892c07029efcac37f90d4dd077b6bb226b54c40621b94987a044c

  • SSDEEP

    384:rdP9JIA7uJ1wK2xBpHbVbl+NGYD90pSCfZziEKffhaekBfdReVwoGHdRsArr2rOR:R9JIqNl/SSrrpBfiIdRsorZucnjtsq

Malware Config

Extracted

Family

guloader

C2

https://eficadgdl.com/well/Omitted-Credentials_encrypted_6A17930.bin

xor.base64

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Executes dropped EXE 16 IoCs
  • Adds Run key to start application 2 TTPs 17 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 34 IoCs
  • Suspicious use of SetThreadContext 17 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 34 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: MapViewOfSection 21 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\virusshare\3\VirusShare_4aa5734fe9c86184f931f4ddaf2d4d7b.exe
    "C:\Users\Admin\AppData\Local\Temp\virusshare\3\VirusShare_4aa5734fe9c86184f931f4ddaf2d4d7b.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Users\Admin\AppData\Local\Temp\virusshare\3\VirusShare_4aa5734fe9c86184f931f4ddaf2d4d7b.exe"
      2⤵
        PID:1224
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        "C:\Users\Admin\AppData\Local\Temp\virusshare\3\VirusShare_4aa5734fe9c86184f931f4ddaf2d4d7b.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        PID:920
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1516
      • C:\Users\Admin\TROFFE\erythroph.exe
        C:\Users\Admin\TROFFE\erythroph.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3016
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          C:\Users\Admin\TROFFE\erythroph.exe
          3⤵
          • Adds Run key to start application
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          PID:8
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:444
      • C:\Users\Admin\TROFFE\erythroph.exe
        C:\Users\Admin\TROFFE\erythroph.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          C:\Users\Admin\TROFFE\erythroph.exe
          3⤵
          • Adds Run key to start application
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          PID:2508
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:452
      • C:\Users\Admin\TROFFE\erythroph.exe
        C:\Users\Admin\TROFFE\erythroph.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:660
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          C:\Users\Admin\TROFFE\erythroph.exe
          3⤵
          • Adds Run key to start application
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          PID:4828
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:5092
      • C:\Users\Admin\TROFFE\erythroph.exe
        C:\Users\Admin\TROFFE\erythroph.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4564
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
          C:\Users\Admin\TROFFE\erythroph.exe
          3⤵
            PID:3008
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
            C:\Users\Admin\TROFFE\erythroph.exe
            3⤵
            • Adds Run key to start application
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • System Location Discovery: System Language Discovery
            PID:4976
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1108
        • C:\Users\Admin\TROFFE\erythroph.exe
          C:\Users\Admin\TROFFE\erythroph.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1968
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
            C:\Users\Admin\TROFFE\erythroph.exe
            3⤵
              PID:5520
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
              C:\Users\Admin\TROFFE\erythroph.exe
              3⤵
              • Adds Run key to start application
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • System Location Discovery: System Language Discovery
              PID:3676
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:2320
          • C:\Users\Admin\TROFFE\erythroph.exe
            C:\Users\Admin\TROFFE\erythroph.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2224
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
              C:\Users\Admin\TROFFE\erythroph.exe
              3⤵
                PID:4312
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                C:\Users\Admin\TROFFE\erythroph.exe
                3⤵
                • Adds Run key to start application
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • System Location Discovery: System Language Discovery
                PID:3596
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
            1⤵
            • Suspicious use of WriteProcessMemory
            PID:1100
            • C:\Users\Admin\TROFFE\erythroph.exe
              C:\Users\Admin\TROFFE\erythroph.exe
              2⤵
              • Executes dropped EXE
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:800
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                C:\Users\Admin\TROFFE\erythroph.exe
                3⤵
                • Adds Run key to start application
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • System Location Discovery: System Language Discovery
                PID:1232
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
            1⤵
              PID:1460
              • C:\Users\Admin\TROFFE\erythroph.exe
                C:\Users\Admin\TROFFE\erythroph.exe
                2⤵
                • Executes dropped EXE
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious use of SetThreadContext
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of SetWindowsHookEx
                PID:6096
                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                  C:\Users\Admin\TROFFE\erythroph.exe
                  3⤵
                  • Adds Run key to start application
                  • Suspicious use of NtSetInformationThreadHideFromDebugger
                  • System Location Discovery: System Language Discovery
                  PID:1528
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
              1⤵
                PID:4468
                • C:\Users\Admin\TROFFE\erythroph.exe
                  C:\Users\Admin\TROFFE\erythroph.exe
                  2⤵
                  • Executes dropped EXE
                  • Suspicious use of NtSetInformationThreadHideFromDebugger
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: MapViewOfSection
                  • Suspicious use of SetWindowsHookEx
                  PID:5048
                  • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                    C:\Users\Admin\TROFFE\erythroph.exe
                    3⤵
                    • Adds Run key to start application
                    • Suspicious use of NtSetInformationThreadHideFromDebugger
                    • System Location Discovery: System Language Discovery
                    PID:3488
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                1⤵
                  PID:1196
                  • C:\Users\Admin\TROFFE\erythroph.exe
                    C:\Users\Admin\TROFFE\erythroph.exe
                    2⤵
                    • Executes dropped EXE
                    • Suspicious use of NtSetInformationThreadHideFromDebugger
                    • Suspicious use of SetThreadContext
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: MapViewOfSection
                    • Suspicious use of SetWindowsHookEx
                    PID:5704
                    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                      C:\Users\Admin\TROFFE\erythroph.exe
                      3⤵
                      • Adds Run key to start application
                      • Suspicious use of NtSetInformationThreadHideFromDebugger
                      • System Location Discovery: System Language Discovery
                      PID:5432
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                  1⤵
                    PID:1012
                    • C:\Users\Admin\TROFFE\erythroph.exe
                      C:\Users\Admin\TROFFE\erythroph.exe
                      2⤵
                      • Executes dropped EXE
                      • Suspicious use of NtSetInformationThreadHideFromDebugger
                      • Suspicious use of SetThreadContext
                      • System Location Discovery: System Language Discovery
                      • Suspicious behavior: MapViewOfSection
                      • Suspicious use of SetWindowsHookEx
                      PID:4680
                      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                        C:\Users\Admin\TROFFE\erythroph.exe
                        3⤵
                        • Adds Run key to start application
                        • Suspicious use of NtSetInformationThreadHideFromDebugger
                        • System Location Discovery: System Language Discovery
                        PID:5616
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                    1⤵
                      PID:1796
                      • C:\Users\Admin\TROFFE\erythroph.exe
                        C:\Users\Admin\TROFFE\erythroph.exe
                        2⤵
                        • Executes dropped EXE
                        • Suspicious use of NtSetInformationThreadHideFromDebugger
                        • Suspicious use of SetThreadContext
                        • System Location Discovery: System Language Discovery
                        • Suspicious behavior: MapViewOfSection
                        • Suspicious use of SetWindowsHookEx
                        PID:3460
                        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                          C:\Users\Admin\TROFFE\erythroph.exe
                          3⤵
                          • Adds Run key to start application
                          • Suspicious use of NtSetInformationThreadHideFromDebugger
                          • System Location Discovery: System Language Discovery
                          PID:3252
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                      1⤵
                        PID:3588
                        • C:\Users\Admin\TROFFE\erythroph.exe
                          C:\Users\Admin\TROFFE\erythroph.exe
                          2⤵
                          • Executes dropped EXE
                          • Suspicious use of NtSetInformationThreadHideFromDebugger
                          • Suspicious use of SetThreadContext
                          • System Location Discovery: System Language Discovery
                          • Suspicious behavior: MapViewOfSection
                          • Suspicious use of SetWindowsHookEx
                          PID:4560
                          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                            C:\Users\Admin\TROFFE\erythroph.exe
                            3⤵
                            • Adds Run key to start application
                            • Suspicious use of NtSetInformationThreadHideFromDebugger
                            • System Location Discovery: System Language Discovery
                            PID:1324
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                        1⤵
                          PID:5496
                          • C:\Users\Admin\TROFFE\erythroph.exe
                            C:\Users\Admin\TROFFE\erythroph.exe
                            2⤵
                            • Executes dropped EXE
                            • Suspicious use of NtSetInformationThreadHideFromDebugger
                            • Suspicious use of SetThreadContext
                            • System Location Discovery: System Language Discovery
                            • Suspicious behavior: MapViewOfSection
                            • Suspicious use of SetWindowsHookEx
                            PID:5448
                            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                              C:\Users\Admin\TROFFE\erythroph.exe
                              3⤵
                              • Adds Run key to start application
                              • Suspicious use of NtSetInformationThreadHideFromDebugger
                              • System Location Discovery: System Language Discovery
                              PID:2328
                        • C:\Windows\system32\cmd.exe
                          C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                          1⤵
                            PID:5896
                            • C:\Users\Admin\TROFFE\erythroph.exe
                              C:\Users\Admin\TROFFE\erythroph.exe
                              2⤵
                              • Executes dropped EXE
                              • Suspicious use of NtSetInformationThreadHideFromDebugger
                              • Suspicious use of SetThreadContext
                              • System Location Discovery: System Language Discovery
                              • Suspicious behavior: MapViewOfSection
                              • Suspicious use of SetWindowsHookEx
                              PID:3092
                              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                                C:\Users\Admin\TROFFE\erythroph.exe
                                3⤵
                                • Adds Run key to start application
                                • Suspicious use of NtSetInformationThreadHideFromDebugger
                                • System Location Discovery: System Language Discovery
                                PID:5692
                          • C:\Windows\system32\cmd.exe
                            C:\Windows\system32\cmd.exe /c C:\Users\Admin\TROFFE\erythroph.exe
                            1⤵
                              PID:1412
                              • C:\Users\Admin\TROFFE\erythroph.exe
                                C:\Users\Admin\TROFFE\erythroph.exe
                                2⤵
                                • Executes dropped EXE
                                • Suspicious use of NtSetInformationThreadHideFromDebugger
                                • Suspicious use of SetThreadContext
                                • System Location Discovery: System Language Discovery
                                • Suspicious behavior: MapViewOfSection
                                • Suspicious use of SetWindowsHookEx
                                PID:1996
                                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
                                  C:\Users\Admin\TROFFE\erythroph.exe
                                  3⤵
                                  • Adds Run key to start application
                                  • Suspicious use of NtSetInformationThreadHideFromDebugger
                                  • System Location Discovery: System Language Discovery
                                  PID:588

                            Network

                            MITRE ATT&CK Enterprise v16

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • C:\Users\Admin\TROFFE\erythroph.exe

                              Filesize

                              64KB

                              MD5

                              4aa5734fe9c86184f931f4ddaf2d4d7b

                              SHA1

                              a066ccad76f3c63d053cd68ac8692d4f4acf82ac

                              SHA256

                              2e18ad3e470b97415beb2cdb8e3ef7510bad21f0a5add020a7f9343dd959eeaa

                              SHA512

                              7355ffd3fc59af49af1d57f5327c7442a12c8e5ddc6ec9e176cc27fd4986cd6182f5f6ce91f892c07029efcac37f90d4dd077b6bb226b54c40621b94987a044c

                            • memory/8-49-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB

                            • memory/8-14-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB

                            • memory/920-34-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB

                            • memory/920-7-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB

                            • memory/920-5-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB

                            • memory/1528-63-0x0000000075190000-0x000000007541A000-memory.dmp

                              Filesize

                              2.5MB

                            • memory/2848-4-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB

                            • memory/2848-25-0x00000000022E0000-0x00000000022E8000-memory.dmp

                              Filesize

                              32KB

                            • memory/2848-2-0x00000000022E0000-0x00000000022E8000-memory.dmp

                              Filesize

                              32KB

                            • memory/2848-3-0x00007FFF9D541000-0x00007FFF9D66A000-memory.dmp

                              Filesize

                              1.2MB

                            • memory/2848-64-0x00000000022E0000-0x00000000022E8000-memory.dmp

                              Filesize

                              32KB

                            • memory/3016-13-0x00007FFF9D540000-0x00007FFF9D749000-memory.dmp

                              Filesize

                              2.0MB