Analysis

  • max time kernel
    193s
  • max time network
    217s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-11-2022 11:51

General

  • Target

    651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe

  • Size

    263KB

  • MD5

    41e602458690a89ea73aa0396310ca70

  • SHA1

    4d6cb371459fd058822d33ddbe7700196e795477

  • SHA256

    651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098

  • SHA512

    7f0e24facb267bab08db18ffb0d81b436dcee696345ea4745a80d5d52762e1970046e9ab210165e5c821f43ecbafcc2111aaf128f14af9c222cc21c02fdf66a4

  • SSDEEP

    6144:k9Yzar9UGRZhirjkyvBR/wxE4UhsY0/0hhVaKgQ:TzmmGbhiH5NwS4UhsB/mTB

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2588
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3432
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
          PID:3364
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3660
          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
            1⤵
              PID:3536
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
              1⤵
                PID:4280
              • C:\Windows\system32\backgroundTaskHost.exe
                "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                1⤵
                  PID:4472
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3276
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:3088
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:668
                        • C:\Users\Admin\AppData\Local\Temp\651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe
                          "C:\Users\Admin\AppData\Local\Temp\651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe"
                          2⤵
                          • Modifies system executable filetype association
                          • Checks computer location settings
                          • Drops file in Program Files directory
                          • Drops file in Windows directory
                          • Modifies Internet Explorer settings
                          • Modifies registry class
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          PID:1536
                          • C:\Users\Admin\AppData\Local\Temp\3582-490\651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe
                            "C:\Users\Admin\AppData\Local\Temp\3582-490\651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe"
                            3⤵
                            • Executes dropped EXE
                            • Suspicious use of SetThreadContext
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:3000
                            • C:\Users\Admin\AppData\Roaming\Asuh\iveb.exe
                              "C:\Users\Admin\AppData\Roaming\Asuh\iveb.exe"
                              4⤵
                              • Executes dropped EXE
                              • Adds Run key to start application
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of WriteProcessMemory
                              PID:2060
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp16f75a81.bat"
                              4⤵
                                PID:3720
                                • C:\Windows\System32\Conhost.exe
                                  \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                                  5⤵
                                    PID:4484
                          • C:\Windows\system32\taskhostw.exe
                            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                            1⤵
                              PID:2836
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                              1⤵
                                PID:2648
                              • C:\Windows\System32\RuntimeBroker.exe
                                C:\Windows\System32\RuntimeBroker.exe -Embedding
                                1⤵
                                  PID:216
                                • C:\Windows\system32\backgroundTaskHost.exe
                                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                  1⤵
                                    PID:3648
                                  • C:\Windows\System32\RuntimeBroker.exe
                                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                                    1⤵
                                      PID:4620

                                    Network

                                    MITRE ATT&CK Matrix ATT&CK v6

                                    Persistence

                                    Change Default File Association

                                    1
                                    T1042

                                    Registry Run Keys / Startup Folder

                                    1
                                    T1060

                                    Defense Evasion

                                    Modify Registry

                                    3
                                    T1112

                                    Credential Access

                                    Credentials in Files

                                    1
                                    T1081

                                    Discovery

                                    Query Registry

                                    2
                                    T1012

                                    System Information Discovery

                                    2
                                    T1082

                                    Collection

                                    Data from Local System

                                    1
                                    T1005

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Temp\3582-490\651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe
                                      Filesize

                                      223KB

                                      MD5

                                      9c13eac3b71ecbab06fd1526f453d738

                                      SHA1

                                      08bf76f7839b75277a905bc0fb40d5bbee36e00c

                                      SHA256

                                      1cf252968b21e4e2ec151ba7c4affc4f13fe33330f03d35a7694b1e83b9a4b96

                                      SHA512

                                      8f7d8ab7101323aeaa4323290f5f226d3fc7072311589171d545c14171631dd91bccac80791bda62a66879d95d8554940a611c1ef23bf699a4f7d2ce7f3bfb74

                                    • C:\Users\Admin\AppData\Local\Temp\3582-490\651c8e0bbf331156743397142e81250994b5975b1fd1b6cf400bb0a610936098.exe
                                      Filesize

                                      223KB

                                      MD5

                                      9c13eac3b71ecbab06fd1526f453d738

                                      SHA1

                                      08bf76f7839b75277a905bc0fb40d5bbee36e00c

                                      SHA256

                                      1cf252968b21e4e2ec151ba7c4affc4f13fe33330f03d35a7694b1e83b9a4b96

                                      SHA512

                                      8f7d8ab7101323aeaa4323290f5f226d3fc7072311589171d545c14171631dd91bccac80791bda62a66879d95d8554940a611c1ef23bf699a4f7d2ce7f3bfb74

                                    • C:\Users\Admin\AppData\Roaming\Asuh\iveb.exe
                                      Filesize

                                      223KB

                                      MD5

                                      b0b7d81edaf75f8d4b0a10fd7b85d2a3

                                      SHA1

                                      facb48bd8ec29fe5a8c256bf08cb30310bc9a88d

                                      SHA256

                                      7cc3161d81e5927df76e74085a08cef9d2b7bcaa92ea66bd0a810991ba6ac53d

                                      SHA512

                                      a07477b23ebb6e8e873ed8560ecb63c5a1eff7633b5ea8b15f0b996521f852e142b9d0b47cc2814ee68ce745bcbc97d64b7f08b16fe481a1b34bcf7f26c0f38e

                                    • C:\Users\Admin\AppData\Roaming\Asuh\iveb.exe
                                      Filesize

                                      223KB

                                      MD5

                                      b0b7d81edaf75f8d4b0a10fd7b85d2a3

                                      SHA1

                                      facb48bd8ec29fe5a8c256bf08cb30310bc9a88d

                                      SHA256

                                      7cc3161d81e5927df76e74085a08cef9d2b7bcaa92ea66bd0a810991ba6ac53d

                                      SHA512

                                      a07477b23ebb6e8e873ed8560ecb63c5a1eff7633b5ea8b15f0b996521f852e142b9d0b47cc2814ee68ce745bcbc97d64b7f08b16fe481a1b34bcf7f26c0f38e

                                    • C:\Users\Admin\AppData\Roaming\Utwuy\ybhi.opo
                                      Filesize

                                      2KB

                                      MD5

                                      d13e6e62d578dc7b11ed32157680e7be

                                      SHA1

                                      7c4243e53a9452555e942eed1ee47592fd1a1a3e

                                      SHA256

                                      6105c8ba0d2fe9730303ad8a4eee09aac317aa953647917fffc6851f216ed906

                                      SHA512

                                      9f16d9c4d8c9a57c47282c6822aa8e5f36ac8306cd5ceb1eaccc1f0aee225ec0b4b1f254dd559408236f59350faaa8b794cac615c8d5c3b1a00aadc6ab45d29a

                                    • memory/1536-141-0x0000000002EF0000-0x0000000002F2B000-memory.dmp
                                      Filesize

                                      236KB

                                    • memory/2060-137-0x0000000000000000-mapping.dmp
                                    • memory/3000-135-0x0000000000400000-0x000000000046B000-memory.dmp
                                      Filesize

                                      428KB

                                    • memory/3000-136-0x0000000000730000-0x0000000000745000-memory.dmp
                                      Filesize

                                      84KB

                                    • memory/3000-132-0x0000000000000000-mapping.dmp
                                    • memory/3000-145-0x0000000000B50000-0x0000000000B8B000-memory.dmp
                                      Filesize

                                      236KB

                                    • memory/3720-142-0x0000000000000000-mapping.dmp
                                    • memory/3720-143-0x00000000007C0000-0x00000000007FB000-memory.dmp
                                      Filesize

                                      236KB

                                    • memory/3720-146-0x00000000007C0000-0x00000000007FB000-memory.dmp
                                      Filesize

                                      236KB