Analysis

  • max time kernel
    70s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231129-en
  • resource tags

    arch:x64arch:x86image:win11-20231129-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    09-12-2023 14:13

General

  • Target

    YoudaoDuiaSrtup.msi

  • Size

    102.2MB

  • MD5

    6dfa01c13a071656051a59c12bd3a760

  • SHA1

    b78d087029e220baa2d2e204515da2eb4c2d9e8b

  • SHA256

    7849fe61a8b3e0793c59a3f35d016416be77d65c6ca10e6a5436a972b9fb5156

  • SHA512

    8f348de3aacdfcd7aef38d86b9f95fc2b3c7768164d2210137f8eb0f4db6b5bea922ff6afbf786208487362b967744c772dbbef438e2dfd24c1a244070453c82

  • SSDEEP

    1572864:WEbB12iidE/5zM2fr5Z1fSAoyeldvp2BB9oH5irfdCT6a:zBed4zM2fr5zqAxqdvkBB9y5ibsea

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 9 IoCs
  • VMProtect packed file 5 IoCs

    Detects executables packed with VMProtect commercial packer.

  • 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 13 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 11 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\YoudaoDuiaSrtup.msi
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4444
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 0B32621EFDD6E66E19FD12564EF5ED39 C
      2⤵
      • Loads dropped DLL
      PID:4180
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4164
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D9D776F45A18B86C5E0D13DF272D48D1
        2⤵
        • Loads dropped DLL
        PID:3860
      • C:\Windows\Installer\MSIBF08.tmp
        "C:\Windows\Installer\MSIBF08.tmp" /EnforcedRunAsAdmin /RunAsAdmin "C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\2.bat"
        2⤵
        • Executes dropped EXE
        PID:3172
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C ""C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\2.bat" "
          3⤵
            PID:2580
            • C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\netfist.exe
              C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\netfist.exe
              4⤵
                PID:5036
                • C:\windows\Runn\Yloux.exe
                  "C:\windows\Runn\Yloux.exe"
                  5⤵
                    PID:4656
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Checks SCSI registry key(s)
            PID:4384
          • C:\Windows\System32\rundll32.exe
            C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
            1⤵
              PID:1276

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Config.Msi\e58ba15.rbs

              Filesize

              417KB

              MD5

              2e91caab840028d1001653582dfe1f87

              SHA1

              e2a8437b0f5c836cc87d7d54b7e64c94f05c4f2b

              SHA256

              fbc0c91dc1b5ca9b8d3629e701eeda9fd4537f26d4a9b5e9ab5219d7a3a6a0c4

              SHA512

              aa06a5a4e63dbee11fa06114bb77ba92f5b5f6ec10c8f8eb2f989b91810b84889b0017da5ba88bdee1cc5ac02f7634700b8d4bfc93cc3ffa6973b3856fccd69f

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIAFD9.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIAFD9.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIAFD9.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

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

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIB098.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIB098.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIB0A9.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Local\Temp\MSIB0A9.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\2.bat

              Filesize

              41B

              MD5

              12c6e814a8844f939daa8ec4d4a6a3c7

              SHA1

              abfd9552064ad03839a9395ead502262d9cb8d01

              SHA256

              c886afbc6940d821cbc534c0d56f3c759efc455af15662ff27c24952ed766306

              SHA512

              e7bcc3c07dfe7f00084be67e135c62337375f10c7f31cd4f07de8170f70ea4e6310adc38e342b1a3d2b192470ff6cfc6962e020c33bf1372ac1b0bc818f6d031

            • C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\netfist.exe

              Filesize

              5.4MB

              MD5

              7f1a45d1319d27be5e9caca49a70a231

              SHA1

              9997ae59f4690081727b00888c839bf3347590b9

              SHA256

              c40586e069e2516850436961f3848b7c03d27e8c150c362af3f8c1961ff70101

              SHA512

              fb674be9647eb485fac2f6795f606844815f86980ba3c1b2e22a4d832e8c1993156c55cf0739663327f967aaa98a76a1e8e85f151f724fa6255d1f16d33beddc

            • C:\Users\Admin\AppData\Roaming\YOUDAO\dnnt\netfist.exe

              Filesize

              5.4MB

              MD5

              7f1a45d1319d27be5e9caca49a70a231

              SHA1

              9997ae59f4690081727b00888c839bf3347590b9

              SHA256

              c40586e069e2516850436961f3848b7c03d27e8c150c362af3f8c1961ff70101

              SHA512

              fb674be9647eb485fac2f6795f606844815f86980ba3c1b2e22a4d832e8c1993156c55cf0739663327f967aaa98a76a1e8e85f151f724fa6255d1f16d33beddc

            • C:\Windows\Installer\MSIBAB0.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Windows\Installer\MSIBAB0.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Windows\Installer\MSIBB0F.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Windows\Installer\MSIBB0F.tmp

              Filesize

              557KB

              MD5

              db7612f0fd6408d664185cfc81bef0cb

              SHA1

              19a6334ec00365b4f4e57d387ed885b32aa7c9aa

              SHA256

              e9e426b679b3efb233f03c696e997e2da3402f16a321e954b54454317fceb240

              SHA512

              25e129cb22aaabc68c42ecf10bb650ac4d0609b12c08703c780572bac7ecf4559fcc49cd595c56ea48cf55260a984cfa333c08307ffb7c62268b03fbecc724b9

            • C:\Windows\Installer\MSIBF08.tmp

              Filesize

              409KB

              MD5

              f7e1ad874fba884ceabfdb0f8edf74bb

              SHA1

              dcd89a248a6e3d85bb3f7eae624a41cef9704654

              SHA256

              bbce37f9e20f5bc59ab45dc49c985d115b13bb214561ddb874118fd91fb52ce8

              SHA512

              5e59de04305aff37703e928a594b9114fb728e3285c09aae7706339d9f9ee77652271de5899738e8410d13224838efb3e30f5ab4e149c21458d3c971010dd209

            • C:\Windows\Installer\e58ba14.msi

              Filesize

              92.1MB

              MD5

              b60e15e8fb2d8ce9fad69a5c3d712f85

              SHA1

              d383c8d9748cf6e45949fe64613a1e4ccbd74d33

              SHA256

              f3d9f998db9789dbffd21b4352f7a0abc113ea2702d0293f57d6860450f53124

              SHA512

              6b030e2ac56c257a9266a99445347c560d66f0a68d593624ff760a1d9901f9e4f0d02a0faf1c7e4e53f1822e7d79c593710d33d295c11ca19a6c3e7be6a99596

            • C:\Windows\Runn\Yloux.exe

              Filesize

              3.0MB

              MD5

              0f0880c90d955267cd848fe6e8498d4f

              SHA1

              64c0ed793909f2b29374ddb00f05222e9578bb6f

              SHA256

              701e76db5b7d4c8a5f5339cce7d7521096854acdb2b3f6541f63f759b17c5636

              SHA512

              fb42bcf1acad5a60c4cefa3d5d84e2a8ccdfc05b950279a0358022844857e789d00c35c46c32c24888ca263aff916dc4550f29a3950f19353584c37e74253462

            • C:\Windows\Runn\Yloux.exe

              Filesize

              3.0MB

              MD5

              0f0880c90d955267cd848fe6e8498d4f

              SHA1

              64c0ed793909f2b29374ddb00f05222e9578bb6f

              SHA256

              701e76db5b7d4c8a5f5339cce7d7521096854acdb2b3f6541f63f759b17c5636

              SHA512

              fb42bcf1acad5a60c4cefa3d5d84e2a8ccdfc05b950279a0358022844857e789d00c35c46c32c24888ca263aff916dc4550f29a3950f19353584c37e74253462

            • C:\windows\Runn\1.bin

              Filesize

              378KB

              MD5

              3d4a9ff9ca614bc1a25b1ffec75cc10f

              SHA1

              d5b451d8ed1730da915419fb195278f973f1b7ce

              SHA256

              518df94659ce71ce2e23ea66bc681bd9e9bbb88a64db534e95baa24a3dcaff9d

              SHA512

              8adc9c383bea9f8f9a72c44973edcdaeb1ad988657ae18b0f782ec83a6943b1b31557848d61e5bd48dcf0250d7b6488ee5f17be9d072ce77fdb4e5ce32ee0f7b

            • \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

              Filesize

              12.2MB

              MD5

              f53657dc3b112ef1490ca7741516fe07

              SHA1

              8425542aac438a5275f3a3a33af637732f00166e

              SHA256

              eda580535dca9e2d2fa2299b78eaff2b4ffa696760f0d169bbd337ceb48e6711

              SHA512

              763b5615001e0f3aa023d032affba6a719ce3c011556f35757e1a25116584c9f113221d1ad961a384b1f6d9a77f2635966c34ba37d3f437eea53c197dc0134e6

            • \??\Volume{7fd66704-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{af0cac7e-9f42-4842-8ec4-ab849737b684}_OnDiskSnapshotProp

              Filesize

              6KB

              MD5

              74a64c5e1c7478a6850d6a8e13d649ee

              SHA1

              42b6d44c3c2b1982c5da8aa17d7c8eda493165c8

              SHA256

              48f1d9b94ae0c2400745b56f89c5fb10516a0fb50449222f1f9b677a9434377b

              SHA512

              e5e3850352a0550618236c9491debb4d2a5ebd04944cd2c28926a27708bb602e70177920e0412b6b3d69d58a4cb3de737dde2d2ae1c19b4d31bda33a8508096a

            • memory/4656-101-0x0000000000C00000-0x0000000000C5F000-memory.dmp

              Filesize

              380KB

            • memory/5036-81-0x0000000004450000-0x0000000004A85000-memory.dmp

              Filesize

              6.2MB

            • memory/5036-82-0x0000000010000000-0x0000000010639000-memory.dmp

              Filesize

              6.2MB

            • memory/5036-69-0x0000000000E70000-0x0000000000E71000-memory.dmp

              Filesize

              4KB

            • memory/5036-70-0x0000000000E90000-0x0000000001715000-memory.dmp

              Filesize

              8.5MB

            • memory/5036-71-0x0000000000E90000-0x0000000001715000-memory.dmp

              Filesize

              8.5MB

            • memory/5036-100-0x0000000000E90000-0x0000000001715000-memory.dmp

              Filesize

              8.5MB