Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 10:39

General

  • Target
    858887b380596f12cbe30e3392b88ce7f8a9db25955034d94ec2a772d9a01ab3.exe
  • Size 435KB
  • Sample221203-mqcfssfg41
  • SHA256 858887b380596f12cbe30e3392b88ce7f8a9db25955034d94ec2a772d9a01ab3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • ASPack v2.12-2.42 2 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 26 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 10 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\858887b380596f12cbe30e3392b88ce7f8a9db25955034d94ec2a772d9a01ab3.exe
    "C:\Users\Admin\AppData\Local\Temp\858887b380596f12cbe30e3392b88ce7f8a9db25955034d94ec2a772d9a01ab3.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2188
    • C:\windows\system\Isass.exe
      "C:\windows\system\Isass.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: GetForegroundWindowSpam
      PID:1484
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\windows\system\cartao.html
      2⤵
      • Adds Run key to start application
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1900
      • 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=0xf8,0xfc,0x100,0x9c,0x104,0x7ffea72846f8,0x7ffea7284708,0x7ffea7284718
        3⤵
          PID:5032
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2200 /prefetch:2
          3⤵
            PID:2032
          • 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=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2248 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4044
          • 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=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2804 /prefetch:8
            3⤵
              PID:208
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3364 /prefetch:1
              3⤵
                PID:3100
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3372 /prefetch:1
                3⤵
                  PID:3772
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4828 /prefetch:1
                  3⤵
                    PID:1328
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5140 /prefetch:8
                    3⤵
                      PID:3624
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3868 /prefetch:1
                      3⤵
                        PID:4168
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2892 /prefetch:1
                        3⤵
                          PID:3124
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3748 /prefetch:8
                          3⤵
                            PID:4484
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3808 /prefetch:1
                            3⤵
                              PID:4828
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3844 /prefetch:1
                              3⤵
                                PID:2836
                              • 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=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5652 /prefetch:8
                                3⤵
                                  PID:1916
                                • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --configure-user-settings --verbose-logging --system-level --msedge --force-configure-user-settings
                                  3⤵
                                  • Drops file in Program Files directory
                                  PID:1956
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x7ff6703e5460,0x7ff6703e5470,0x7ff6703e5480
                                    4⤵
                                      PID:5044
                                  • 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=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5652 /prefetch:8
                                    3⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:1636
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=180 /prefetch:1
                                    3⤵
                                      PID:1348
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2660 /prefetch:1
                                      3⤵
                                        PID:396
                                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5684 /prefetch:8
                                        3⤵
                                          PID:4836
                                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=3172 /prefetch:2
                                          3⤵
                                          • Suspicious behavior: EnumeratesProcesses
                                          PID:2500
                                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=19 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3100 /prefetch:1
                                          3⤵
                                            PID:3056
                                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2108,12399529067528376944,5018938095286264315,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1868 /prefetch:8
                                            3⤵
                                              PID:3104
                                        • C:\Windows\System32\CompPkgSrv.exe
                                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                                          1⤵
                                            PID:4736

                                          Network

                                                MITRE ATT&CK Enterprise v6

                                                Replay Monitor

                                                Loading Replay Monitor...

                                                Downloads

                                                75CA58072B9926F763A91F0CC2798706_93E4B2BA79A897B3100CCB27F2D3BF4F

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\75CA58072B9926F763A91F0CC2798706_93E4B2BA79A897B3100CCB27F2D3BF4F
                                                • Size 1KB
                                                • SHA256 7e2c61c3a97760bb147863ef5b32476e7ad40281c49f88f96b626987cf87daa8
                                                • MD5 SHA1 SHA512

                                                B66240B0F6C84BD4857ABA60CF5CE4A0_5043E0F5DF723415C9EECC201C838A62

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B66240B0F6C84BD4857ABA60CF5CE4A0_5043E0F5DF723415C9EECC201C838A62
                                                • Size 1KB
                                                • SHA256 0e01a5872ad78b80cd0dbd9f4a68b0b7578e1b2cb4c335a48fe6e3b906b8228f
                                                • MD5 SHA1 SHA512

                                                BAD725C80F9E10846F35D039A996E4A8_88B6AE015495C1ECC395D19C1DD02894

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BAD725C80F9E10846F35D039A996E4A8_88B6AE015495C1ECC395D19C1DD02894
                                                • Size 1KB
                                                • SHA256 df398498ccd10951e5b64a54a0d10547e36a78d1cbca6369ee8aabc83363ad83
                                                • MD5 SHA1 SHA512

                                                57C8EDB95DF3F0AD4EE2DC2B8CFD4157

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
                                                • Size 340B
                                                • SHA256 66cad833409ac2299dda70ff1d260078975593ce03ea577e4c4e30b21418c08e
                                                • MD5 SHA1 SHA512

                                                75CA58072B9926F763A91F0CC2798706_93E4B2BA79A897B3100CCB27F2D3BF4F

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\75CA58072B9926F763A91F0CC2798706_93E4B2BA79A897B3100CCB27F2D3BF4F
                                                • Size 442B
                                                • SHA256 572ca0024186421d3328ad028d52f2f51f506aea7257f0e12561553499a827a4
                                                • MD5 SHA1 SHA512

                                                B66240B0F6C84BD4857ABA60CF5CE4A0_5043E0F5DF723415C9EECC201C838A62

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B66240B0F6C84BD4857ABA60CF5CE4A0_5043E0F5DF723415C9EECC201C838A62
                                                • Size 458B
                                                • SHA256 3fa82ff32d96673b2ac40f96486943ea8891fb2157c5e247cbe41a23faf9d989
                                                • MD5 SHA1 SHA512

                                                BAD725C80F9E10846F35D039A996E4A8_88B6AE015495C1ECC395D19C1DD02894

                                                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BAD725C80F9E10846F35D039A996E4A8_88B6AE015495C1ECC395D19C1DD02894
                                                • Size 432B
                                                • SHA256 cc96350f779391cfa6d80aa9ed49d7f8710a2b807b542781d2582f210feb5047
                                                • MD5 SHA1 SHA512

                                                Isass.exe

                                                • Path C:\Windows\System\Isass.exe
                                                • Size 374KB
                                                • SHA256 db7a049e95a848a3b54d53c751803950cd20ce4185bd2ad30bc3d6003eefcd93
                                                • MD5 SHA1 SHA512 SSDEEP

                                                Isass.exe

                                                • Path C:\windows\system\Isass.exe
                                                • Size 374KB
                                                • SHA256 db7a049e95a848a3b54d53c751803950cd20ce4185bd2ad30bc3d6003eefcd93
                                                • MD5 SHA1 SHA512 SSDEEP

                                                cartao.html

                                                • Path C:\windows\system\cartao.html
                                                • Size 68B
                                                • SHA256 fcd6ab594cf573d80609fb22ed43db08607c32da469ce930f783668b25146775
                                                • MD5 SHA1 SHA512