Resubmissions

30/08/2026, 18:07

260830-wqdtasyxd110

15/08/2026, 20:51

260815-zm6lpahf93

15/08/2026, 20:41

260815-zgvbgagm7y

14/08/2026, 22:57

260814-2w7w8aar3y

14/08/2026, 11:48

260814-nyhs8aszbx10

14/08/2026, 04:14

260814-ett61svse110

14/08/2026, 04:07

260814-epvlzscl7y

09/08/2026, 10:54

260809-mzv99sztc1

09/08/2026, 10:54

260809-mzk5aswfjg

09/08/2026, 10:47

260809-mv1desdp6x

Analysis

  • max time kernel
    134s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/08/2026, 18:28

General

  • Target
    4363463463464363463463463.exe
  • Size 10KB
  • Sample260802-w4e9aaek9z
  • SHA256 2fcad226b17131da4274e1b9f8f31359bdd325c9568665f08fd1f6c5d06a23ce
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: SiriusRAT

    SiriusRAT is a Windows RAT written in C++ with HVNC, offline keylogging, and remote desktop capabilities.

  • Detects SiriusRAT 1 IoCs
  • Downloads MZ/PE file 1 IoCs
  • Signed with revoked ConnectWise certificate 2 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 10 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\4363463463464363463463463.exe
    "C:\Users\Admin\AppData\Local\Temp\4363463463464363463463463.exe"
    1⤵
    • Downloads MZ/PE file
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Local\Temp\Files\ScreenConnect.ClientSetup.exe
      "C:\Users\Admin\AppData\Local\Temp\Files\ScreenConnect.ClientSetup.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:652
      • C:\Windows\SysWOW64\msiexec.exe
        "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\cae7115510449f18\ScreenConnect.ClientSetup.msi"
        3⤵
        • Enumerates connected drives
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        PID:3220
    • C:\Users\Admin\AppData\Local\Temp\Files\123123.exe
      "C:\Users\Admin\AppData\Local\Temp\Files\123123.exe"
      2⤵
        PID:2788
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2568
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 8D44BD12FAA4E5E55265ED0C5EF31536 C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5012
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI53DE.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240800796 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2076
      • C:\Windows\system32\srtasks.exe
        C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
        2⤵
          PID:5584
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding BF1EA7D82A1AD6511C381D28D9D6C827
          2⤵
            PID:6048
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Checks SCSI registry key(s)
          PID:4388

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              e5a8acd.rbs

              • Path C:\Config.Msi\e5a8acd.rbs
              • Size 10KB
              • SHA256 c60cf9f72eabd0918ca4ccf8d7b50964a07b1ec4b1fe74a15f39e62682f34f5a
              • MD5 SHA1 SHA512 SSDEEP TLSH

              123123.exe

              • Path C:\Users\Admin\AppData\Local\Temp\Files\123123.exe
              • Size 2.0MB
              • SHA256 d1a1e6a2c0adc45a4cf40128e683499cd984d5803ad2e3a1ce26768a612eaec2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.ClientSetup.exe

              • Path C:\Users\Admin\AppData\Local\Temp\Files\ScreenConnect.ClientSetup.exe
              • Size 5.4MB
              • SHA256 d2305c675ac7cb8f607c06fff1268ae695213ce2de21f8bf78b65a17792a0c3b
              • MD5 SHA1 SHA512 SSDEEP TLSH

              MSI53DE.tmp

              • Path C:\Users\Admin\AppData\Local\Temp\MSI53DE.tmp
              • Size 1.0MB
              • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Microsoft.Deployment.WindowsInstaller.dll

              • Path C:\Users\Admin\AppData\Local\Temp\MSI53DE.tmp-\Microsoft.Deployment.WindowsInstaller.dll
              • Size 172KB
              • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Core.dll

              • Path C:\Users\Admin\AppData\Local\Temp\MSI53DE.tmp-\ScreenConnect.Core.dll
              • Size 538KB
              • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.InstallerActions.dll

              • Path C:\Users\Admin\AppData\Local\Temp\MSI53DE.tmp-\ScreenConnect.InstallerActions.dll
              • Size 11KB
              • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.Windows.dll

              • Path C:\Users\Admin\AppData\Local\Temp\MSI53DE.tmp-\ScreenConnect.Windows.dll
              • Size 1.6MB
              • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ScreenConnect.ClientSetup.msi

              • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\cae7115510449f18\ScreenConnect.ClientSetup.msi
              • Size 12.9MB
              • SHA256 ace044c64a54dd2e6aceac843a6f6136ed43299d1f2befa03a60d1305fbc628e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              MSI8C16.tmp

              • Path C:\Windows\Installer\MSI8C16.tmp
              • Size 202KB
              • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/652-15-0x0000000005840000-0x0000000005B32000-memory.dmp

              memory/652-14-0x0000000005530000-0x0000000005540000-memory.dmp

              memory/652-19-0x00000000060E0000-0x0000000006686000-memory.dmp

              memory/652-20-0x0000000005530000-0x0000000005540000-memory.dmp

              memory/652-18-0x0000000005540000-0x00000000056EC000-memory.dmp

              memory/652-16-0x0000000005450000-0x00000000054DC000-memory.dmp

              memory/652-12-0x0000000005530000-0x0000000005540000-memory.dmp

              memory/652-17-0x0000000001620000-0x0000000001642000-memory.dmp

              memory/652-13-0x0000000001550000-0x0000000001558000-memory.dmp

              memory/2076-54-0x0000000005200000-0x00000000053AC000-memory.dmp

              memory/2076-50-0x0000000004F80000-0x000000000500C000-memory.dmp

              memory/2076-46-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

              memory/2076-42-0x0000000004EC0000-0x0000000004EEE000-memory.dmp

              memory/2220-0-0x0000000000850000-0x0000000000858000-memory.dmp

              memory/2220-3-0x0000000005530000-0x0000000005540000-memory.dmp

              memory/2220-2-0x0000000005530000-0x0000000005540000-memory.dmp

              memory/2220-1-0x0000000005330000-0x00000000053CC000-memory.dmp