Analysis

  • max time kernel
    126s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2024 21:58

General

  • Target

    Sigma.exe

  • Size

    839KB

  • MD5

    50c30c48da78a5da6c3930deeab5c162

  • SHA1

    8ce696d3f74a75f99d3c29a107d940eba35cd13f

  • SHA256

    bd0bf0ab2a105a60f009019c56aafdc6dafcd7a45f8ab1a585a5bc5d1625b716

  • SHA512

    60175eaf8b6a895aa9bdc38ae00d30f83855f52457b120241bba9fcd8d83f5637aee55aa9993e034c3ea4f2310426ea04d69c15835375dd3915e39169def0809

  • SSDEEP

    24576:nmIS04YNEMuExDiU6E5R9s8xY/2l/detnIbt+rx:mQ4auS+UjfU2TedIbt+r

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 25 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Sigma.exe
    "C:\Users\Admin\AppData\Local\Temp\Sigma.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3180
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:924
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x11c,0x120,0x124,0xf8,0x128,0x7ffcd70846f8,0x7ffcd7084708,0x7ffcd7084718
      2⤵
        PID:3580
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2184 /prefetch:2
        2⤵
          PID:4976
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2156 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3336
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2752 /prefetch:8
          2⤵
            PID:4328
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3348 /prefetch:1
            2⤵
              PID:3444
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3352 /prefetch:1
              2⤵
                PID:2388
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4824 /prefetch:1
                2⤵
                  PID:3212
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4704 /prefetch:1
                  2⤵
                    PID:400
                  • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5296 /prefetch:8
                    2⤵
                      PID:1112
                    • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5296 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:5024
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5288 /prefetch:1
                      2⤵
                        PID:2704
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5388 /prefetch:1
                        2⤵
                          PID:412
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5292 /prefetch:1
                          2⤵
                            PID:3308
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,3833884634535170969,2962495354718440239,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4796 /prefetch:1
                            2⤵
                              PID:4408
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:4252
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:1388

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

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                              Downloads

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                Filesize

                                152B

                                MD5

                                f426165d1e5f7df1b7a3758c306cd4ae

                                SHA1

                                59ef728fbbb5c4197600f61daec48556fec651c1

                                SHA256

                                b68dfc21866d0abe5c75d70acc54670421fa9b26baf98af852768676a901b841

                                SHA512

                                8d437fcb85acb0705bf080141e7a021740901248985a76299ea8c43e46ad78fb88c738322cf302f6a550caa5e79d85b36827e9b329b1094521b17cf638c015b6

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                Filesize

                                152B

                                MD5

                                6960857d16aadfa79d36df8ebbf0e423

                                SHA1

                                e1db43bd478274366621a8c6497e270d46c6ed4f

                                SHA256

                                f40b812ce44e391423eb66602ac0af138a1e948aa8c4116045fef671ef21cd32

                                SHA512

                                6deb2a63055a643759dd0ae125fb2f68ec04a443dbf8b066a812b42352bbcfa4517382ed0910c190c986a864559c3453c772e153ee2e9432fb2de2e1e49ca7fe

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                Filesize

                                5KB

                                MD5

                                b2bd3075a93499b04b42170c08642018

                                SHA1

                                ede41f1fd249d27af5d6ce862dd43b6daafb3eb5

                                SHA256

                                398ffa3c0a93eb98c12fc4d01a50eb6794007b31c6f0658b88f5f9237b6a2c71

                                SHA512

                                31276cbb71dafd26200618600f233243221806b7d225340ecc753488d3ea1a330e82f52653c091f8fce9ac1999ce500056c7f6c06e87304f7f2ff2b9d7af917e

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                Filesize

                                6KB

                                MD5

                                3e6607fd88ee49409c2accdeae593305

                                SHA1

                                a67bd2ed4f20dc111ff373f3a560a8b04afa1528

                                SHA256

                                5fa8360fb052bcf1e3a2c8a5a75525a3e18fc4853547f6b8af8fee3e233290b2

                                SHA512

                                ddd6ba3589adf67a16bc586a568477328d381d11daa45e0a59aa8453ecbee201eb849094594c87b1e5c2f54e619a727343a23c8963bd293476f92b7c63d583c1

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                Filesize

                                6KB

                                MD5

                                116267141e54d2e45bbbb16a5222fcca

                                SHA1

                                f46131bd5316e4235ce966025a2f5f9a1339ca2a

                                SHA256

                                9316a7b41e1336e436e9fe0a017a90f707c8e73e510b7b22bce9971243d64f46

                                SHA512

                                84237feade52a776805afb9adf61c800a29aac769f9a51229cee9eae640e93df3cbdcff5f15b5c1e690f44463d811683175ea70892c926be3ed3a9d14c940285

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                Filesize

                                16B

                                MD5

                                6752a1d65b201c13b62ea44016eb221f

                                SHA1

                                58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                                SHA256

                                0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                                SHA512

                                9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                Filesize

                                10KB

                                MD5

                                678fa8550c674f2e5ca84506679966e2

                                SHA1

                                8bbb9d23519063953058b3d1cb7d8b23094d7d02

                                SHA256

                                355cda1a57b04f9415cf66941051ca3d06b7bfe180d7324380adc9238c65017c

                                SHA512

                                a557f985b6ae798c06530424c4ea45302712c30a08534ad5aa04a5f7dc466de0a0284160e8e4bfbced41d53e9f03a5d0df3b4c4a611680543b75e3580d5570ce

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                Filesize

                                10KB

                                MD5

                                2ce53c94395defa203297efb788e1c79

                                SHA1

                                be5978587756ef5741fa30bfcb3c6d53a6e6203c

                                SHA256

                                7cad9c7517e33a0f8df2b9bac8b27c135e8b1e0a5194e95e70d3b2f7653d8725

                                SHA512

                                51eaf380a28288b9d155cc0ce9789f0421e0b25f7332be0b6b3e8a64a118b06be49872cd1d97a3182dcaaa49af80d1b58db4232f9d6cb17edb241b855a58de71

                              • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\ShaderCache\GPUCache\data_1

                                Filesize

                                264KB

                                MD5

                                f50f89a0a91564d0b8a211f8921aa7de

                                SHA1

                                112403a17dd69d5b9018b8cede023cb3b54eab7d

                                SHA256

                                b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                SHA512

                                bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                              • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe

                                Filesize

                                839KB

                                MD5

                                50c30c48da78a5da6c3930deeab5c162

                                SHA1

                                8ce696d3f74a75f99d3c29a107d940eba35cd13f

                                SHA256

                                bd0bf0ab2a105a60f009019c56aafdc6dafcd7a45f8ab1a585a5bc5d1625b716

                                SHA512

                                60175eaf8b6a895aa9bdc38ae00d30f83855f52457b120241bba9fcd8d83f5637aee55aa9993e034c3ea4f2310426ea04d69c15835375dd3915e39169def0809

                              • memory/1648-18-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/1648-0-0x0000000075182000-0x0000000075183000-memory.dmp

                                Filesize

                                4KB

                              • memory/1648-2-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/1648-1-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-27-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-26-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-25-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-24-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-21-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-20-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB

                              • memory/3180-19-0x0000000075180000-0x0000000075731000-memory.dmp

                                Filesize

                                5.7MB