Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • submitted
    10-05-2024 22:03

General

  • Target

    MSI.msi

  • Size

    1.5MB

  • MD5

    b4a482a7e96cfdef632a7af286120156

  • SHA1

    73e3639a9388af84b9c0f172b3aeaf3823014596

  • SHA256

    ead5ebf464c313176174ff0fdc3360a3477f6361d0947221d31287eeb04691b3

  • SHA512

    15661f1dc751a48f5d213ec99c046e0b9fa1a2201d238d26bee0f15341e9d84611c30f152c463368c6d59f3e7cccb5ae991b1f3127ad65eb3a2ea7823d3b598b

  • SSDEEP

    49152:oIR3YuW8zBQSc0ZnSKYZKumZr7ANCuyspI:FY90ZniK/A8uR

Malware Config

Signatures

  • Brute Ratel C4

    A customized command and control framework for red teaming and adversary simulation.

  • Bruteratel family
  • Detect BruteRatel badger 2 IoCs
  • Blocklisted process makes network request 64 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in Windows directory 10 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 10 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies data under HKEY_USERS 43 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 49 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\MSI.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1660
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2E0EFCDF8181C08AD089D9B1A8862742 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2552
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A3A0DFBA813CB70327DCD08AC1205140
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2296
    • C:\Windows\Installer\MSI2AEA.tmp
      "C:\Windows\Installer\MSI2AEA.tmp" C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\upfilles.dll, stow
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1696
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:2432
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "000000000000059C" "000000000000055C"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:2692
    • C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\upfilles.dll, stow
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:1544

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\MSIE53.tmp

      Filesize

      436KB

      MD5

      475d20c0ea477a35660e3f67ecf0a1df

      SHA1

      67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

      SHA256

      426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

      SHA512

      99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

    • C:\Users\Admin\AppData\Roaming\upfilles.dll

      Filesize

      508KB

      MD5

      ccb6d3cb020f56758622911ddd2f1fcb

      SHA1

      4a013f752c2bf84ca37e418175e0d9b6f61f636d

      SHA256

      f4cb6b684ea097f867d406a978b3422bbf2ecfea39236bf3ab99340996b825de

      SHA512

      6ed929967005eaa6407e273b53a1fedcb2b084d775bed17272fd05b1ce143dbf921ac201246dfbfdbe663c7351e44c12f162e6f03343548b69b5d4598bb3492e

    • C:\Windows\Installer\MSI2AEA.tmp

      Filesize

      389KB

      MD5

      b9545ed17695a32face8c3408a6a3553

      SHA1

      f6c31c9cd832ae2aebcd88e7b2fa6803ae93fc83

      SHA256

      1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a

      SHA512

      f6d6dc40dcba5ff091452d7cc257427dcb7ce2a21816b4fec2ee249e63246b64667f5c4095220623533243103876433ef8c12c9b612c0e95fdfffe41d1504e04

    • memory/1544-43-0x000000026E7A0000-0x000000026E7EA000-memory.dmp

      Filesize

      296KB

    • memory/1544-46-0x000000026E7A0000-0x000000026E7EA000-memory.dmp

      Filesize

      296KB

    • memory/1544-44-0x0000000001F10000-0x0000000001F4E000-memory.dmp

      Filesize

      248KB

    • memory/1544-47-0x0000000001FE0000-0x000000000202C000-memory.dmp

      Filesize

      304KB

    • memory/1544-71-0x0000000001FE0000-0x000000000202C000-memory.dmp

      Filesize

      304KB

    • memory/1696-37-0x00000000001B0000-0x00000000001B2000-memory.dmp

      Filesize

      8KB