Analysis

  • max time kernel
    138s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 01:54

General

  • Target
    f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe
  • Size 11.2MB
  • Sample240919-cbs5wsvell
  • SHA256 f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • SectopRAT

    SectopRAT is a remote access trojan first seen in November 2019.

  • SectopRAT payload 1 IoCs
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 62 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe
    "C:\Users\Admin\AppData\Local\Temp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Users\Admin\AppData\Local\Temp\is-3H7UE.tmp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-3H7UE.tmp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.tmp" /SL5="$70048,10740751,812544,C:\Users\Admin\AppData\Local\Temp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:468
      • C:\Users\Admin\AppData\Local\Temp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe
        "C:\Users\Admin\AppData\Local\Temp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe" /VERYSILENT /NORESTART
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3768
        • C:\Users\Admin\AppData\Local\Temp\is-TKEFR.tmp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.tmp
          "C:\Users\Admin\AppData\Local\Temp\is-TKEFR.tmp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.tmp" /SL5="$D0044,10740751,812544,C:\Users\Admin\AppData\Local\Temp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.exe" /VERYSILENT /NORESTART
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:4844
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /C tasklist /FI "IMAGENAME eq wrsa.exe" /FO CSV /NH | find /I "wrsa.exe"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2700
            • C:\Windows\system32\tasklist.exe
              tasklist /FI "IMAGENAME eq wrsa.exe" /FO CSV /NH
              6⤵
              • Enumerates processes with tasklist
              • Suspicious use of AdjustPrivilegeToken
              PID:512
            • C:\Windows\system32\find.exe
              find /I "wrsa.exe"
              6⤵
                PID:4916
            • C:\Windows\system32\cmd.exe
              "cmd.exe" /C tasklist /FI "IMAGENAME eq opssvc.exe" /FO CSV /NH | find /I "opssvc.exe"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4124
              • C:\Windows\system32\tasklist.exe
                tasklist /FI "IMAGENAME eq opssvc.exe" /FO CSV /NH
                6⤵
                • Enumerates processes with tasklist
                • Suspicious use of AdjustPrivilegeToken
                PID:3292
              • C:\Windows\system32\find.exe
                find /I "opssvc.exe"
                6⤵
                  PID:3304
              • C:\Windows\system32\cmd.exe
                "cmd.exe" /C tasklist /FI "IMAGENAME eq avastui.exe" /FO CSV /NH | find /I "avastui.exe"
                5⤵
                • Suspicious use of WriteProcessMemory
                PID:4340
                • C:\Windows\system32\tasklist.exe
                  tasklist /FI "IMAGENAME eq avastui.exe" /FO CSV /NH
                  6⤵
                  • Enumerates processes with tasklist
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4044
                • C:\Windows\system32\find.exe
                  find /I "avastui.exe"
                  6⤵
                    PID:3340
                • C:\Windows\system32\cmd.exe
                  "cmd.exe" /C tasklist /FI "IMAGENAME eq avgui.exe" /FO CSV /NH | find /I "avgui.exe"
                  5⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2428
                  • C:\Windows\system32\tasklist.exe
                    tasklist /FI "IMAGENAME eq avgui.exe" /FO CSV /NH
                    6⤵
                    • Enumerates processes with tasklist
                    • Suspicious use of AdjustPrivilegeToken
                    PID:856
                  • C:\Windows\system32\find.exe
                    find /I "avgui.exe"
                    6⤵
                      PID:3080
                  • C:\Windows\system32\cmd.exe
                    "cmd.exe" /C tasklist /FI "IMAGENAME eq nswscsvc.exe" /FO CSV /NH | find /I "nswscsvc.exe"
                    5⤵
                    • Suspicious use of WriteProcessMemory
                    PID:540
                    • C:\Windows\system32\tasklist.exe
                      tasklist /FI "IMAGENAME eq nswscsvc.exe" /FO CSV /NH
                      6⤵
                      • Enumerates processes with tasklist
                      • Suspicious use of AdjustPrivilegeToken
                      PID:528
                    • C:\Windows\system32\find.exe
                      find /I "nswscsvc.exe"
                      6⤵
                        PID:1536
                    • C:\Windows\system32\cmd.exe
                      "cmd.exe" /C tasklist /FI "IMAGENAME eq sophoshealth.exe" /FO CSV /NH | find /I "sophoshealth.exe"
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:4400
                      • C:\Windows\system32\tasklist.exe
                        tasklist /FI "IMAGENAME eq sophoshealth.exe" /FO CSV /NH
                        6⤵
                        • Enumerates processes with tasklist
                        • Suspicious use of AdjustPrivilegeToken
                        PID:1440
                      • C:\Windows\system32\find.exe
                        find /I "sophoshealth.exe"
                        6⤵
                          PID:1312
                      • C:\Users\Admin\AppData\Local\acetiam\AutoIt3.exe
                        "C:\Users\Admin\AppData\Local\acetiam\\AutoIt3.exe" "C:\Users\Admin\AppData\Local\acetiam\\grayhound1..a3x"
                        5⤵
                        • Checks computer location settings
                        • Executes dropped EXE
                        • System Location Discovery: System Language Discovery
                        • Suspicious use of WriteProcessMemory
                        PID:464
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\System32\cmd.exe" /c ping -n 5 127.0.0.1 >nul && AutoIt3.exe C:\ProgramData\\bZmNBr.a3x && del C:\ProgramData\\bZmNBr.a3x
                          6⤵
                          • System Location Discovery: System Language Discovery
                          • System Network Configuration Discovery: Internet Connection Discovery
                          • Suspicious use of WriteProcessMemory
                          PID:3724
                          • C:\Windows\SysWOW64\PING.EXE
                            ping -n 5 127.0.0.1
                            7⤵
                            • System Location Discovery: System Language Discovery
                            • System Network Configuration Discovery: Internet Connection Discovery
                            • Runs ping.exe
                            PID:1396
                          • C:\Users\Admin\AppData\Local\acetiam\AutoIt3.exe
                            AutoIt3.exe C:\ProgramData\\bZmNBr.a3x
                            7⤵
                            • Executes dropped EXE
                            • Adds Run key to start application
                            • Suspicious use of SetThreadContext
                            • System Location Discovery: System Language Discovery
                            • Checks processor information in registry
                            • Suspicious use of WriteProcessMemory
                            PID:1288
                            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
                              C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
                              8⤵
                              • System Location Discovery: System Language Discovery
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of SetWindowsHookEx
                              PID:1784

              Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

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                    Downloads

                    f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\is-3H7UE.tmp\f358dde7b5f896d851677a271b4d20e70cdf36a9eeb9da9b001554d65e02a71b.tmp
                    • Size 3.1MB
                    • SHA256 ca3de247b4d58905e04277ee2386cedaeff38a0fad1f46bfff304ba9f0710f35
                    • MD5 SHA1 SHA512 SSDEEP

                    _iscrypt.dll

                    • Path C:\Users\Admin\AppData\Local\Temp\is-49RA2.tmp\_isetup\_iscrypt.dll
                    • Size 2KB
                    • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
                    • MD5 SHA1 SHA512

                    tmp7A.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\tmp7A.tmp
                    • Size 20KB
                    • SHA256 ccd15f9c7a997ae2b5320ea856c7efc54b5055254d41a443d21a60c39c565cb7
                    • MD5 SHA1 SHA512 SSDEEP

                    tmp9C.tmp

                    • Path C:\Users\Admin\AppData\Local\Temp\tmp9C.tmp
                    • Size 20KB
                    • SHA256 d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f
                    • MD5 SHA1 SHA512 SSDEEP

                    AutoIt3.exe

                    • Path C:\Users\Admin\AppData\Local\acetiam\AutoIt3.exe
                    • Size 921KB
                    • SHA256 1da298cab4d537b0b7b5dabf09bff6a212b9e45731e0cc772f99026005fb9e48
                    • MD5 SHA1 SHA512 SSDEEP

                    grayhound.pptx

                    • Path C:\Users\Admin\AppData\Local\acetiam\grayhound.pptx
                    • Size 940KB
                    • SHA256 1841f77c752744d0054847a13cccc5851408d2e38caafcb153e37c56a01f6bac
                    • MD5 SHA1 SHA512 SSDEEP

                    grayhound1..a3x

                    • Path C:\Users\Admin\AppData\Local\acetiam\grayhound1..a3x
                    • Size 62KB
                    • SHA256 8674025ff9edbf37ad8d7e1af8b93bd63e0fe2e8eaea61ee6e1317c468a0e48b
                    • MD5 SHA1 SHA512 SSDEEP

                    memory/468-6-0x00000000031C0000-0x00000000031C1000-memory.dmp

                    memory/468-15-0x0000000000280000-0x00000000005B4000-memory.dmp

                    memory/1684-2-0x00000000008E1000-0x0000000000989000-memory.dmp

                    memory/1684-17-0x00000000008E0000-0x00000000009B4000-memory.dmp

                    memory/1684-1-0x00000000008E0000-0x00000000009B4000-memory.dmp

                    memory/1784-187-0x0000000000400000-0x00000000004C6000-memory.dmp

                    memory/1784-194-0x0000000005980000-0x000000000598A000-memory.dmp

                    memory/1784-224-0x0000000005CC0000-0x0000000005CFC000-memory.dmp

                    memory/1784-188-0x0000000000400000-0x00000000004C6000-memory.dmp

                    memory/1784-189-0x00000000059A0000-0x0000000005A32000-memory.dmp

                    memory/1784-190-0x0000000006040000-0x00000000065E4000-memory.dmp

                    memory/1784-191-0x0000000005DE0000-0x0000000005FA2000-memory.dmp

                    memory/1784-192-0x0000000005B10000-0x0000000005B86000-memory.dmp

                    memory/1784-193-0x0000000005B90000-0x0000000005BE0000-memory.dmp

                    memory/1784-223-0x0000000005C30000-0x0000000005C42000-memory.dmp

                    memory/1784-195-0x0000000006C20000-0x000000000714C000-memory.dmp

                    memory/1784-196-0x0000000006720000-0x000000000673E000-memory.dmp

                    memory/1784-197-0x0000000006810000-0x0000000006876000-memory.dmp

                    memory/1784-221-0x00000000084C0000-0x00000000084CA000-memory.dmp

                    memory/3768-13-0x00000000008E0000-0x00000000009B4000-memory.dmp

                    memory/3768-178-0x00000000008E0000-0x00000000009B4000-memory.dmp

                    memory/4844-21-0x0000000002A30000-0x0000000002A31000-memory.dmp

                    memory/4844-174-0x0000000000310000-0x0000000000644000-memory.dmp