Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2022 13:46

General

  • Target

    4a9f6c4b7a5c0716912b22366f2b84ae.exe

  • Size

    317KB

  • MD5

    4a9f6c4b7a5c0716912b22366f2b84ae

  • SHA1

    c89d3f01152d9c593583545403492d958210831e

  • SHA256

    4b8067eeb1ff123514e59e09404686f72e9587b723814dd19efdecef767e848a

  • SHA512

    3d318bec41b833930577857e3d7ae3725c3560f4bb9692bb8a448ab1324f7f0ccc28d1ccbe7b9af7149caffc14efcac63d3a43893b6210e8f878e903a16d6085

Malware Config

Extracted

Family

arkei

Botnet

Default

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4a9f6c4b7a5c0716912b22366f2b84ae.exe
    "C:\Users\Admin\AppData\Local\Temp\4a9f6c4b7a5c0716912b22366f2b84ae.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4404
    • C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe
      "C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      PID:3940
      • C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe
        "C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Loads dropped DLL
        • Checks processor information in registry
        PID:332
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe" & exit
          4⤵
            PID:4424
            • C:\Windows\SysWOW64\timeout.exe
              timeout /t 5
              5⤵
              • Delays execution with timeout.exe
              PID:4948
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://yip.su/2N19t7
        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:1432
        • 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,0x100,0xd4,0x104,0x7ffdf95746f8,0x7ffdf9574708,0x7ffdf9574718
          3⤵
            PID:4640
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2024 /prefetch:2
            3⤵
              PID:2280
            • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2152 /prefetch:3
              3⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:5084
            • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2700 /prefetch:8
              3⤵
                PID:2780
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --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=3984 /prefetch:1
                3⤵
                  PID:1960
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --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=3992 /prefetch:1
                  3⤵
                    PID:4480
                  • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5216 /prefetch:8
                    3⤵
                      PID:4784
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5460 /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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5452 /prefetch:8
                        3⤵
                          PID:4748
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --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=5740 /prefetch:1
                          3⤵
                            PID:2556
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5756 /prefetch:1
                            3⤵
                              PID:4872
                            • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6020 /prefetch:8
                              3⤵
                                PID:3684
                              • 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:3092
                                • 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,0x7ff6fd955460,0x7ff6fd955470,0x7ff6fd955480
                                  4⤵
                                    PID:4140
                                • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6020 /prefetch:8
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:640
                                • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4756 /prefetch:8
                                  3⤵
                                    PID:5980
                                  • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3400 /prefetch:8
                                    3⤵
                                      PID:4244
                                    • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3488 /prefetch:8
                                      3⤵
                                        PID:64
                                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2012,3660901952977559962,6295767932607979518,131072 --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=4696 /prefetch:2
                                        3⤵
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:5152
                                      • 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=2012,3660901952977559962,6295767932607979518,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1880 /prefetch:8
                                        3⤵
                                          PID:5208
                                    • C:\Windows\System32\CompPkgSrv.exe
                                      C:\Windows\System32\CompPkgSrv.exe -Embedding
                                      1⤵
                                        PID:5028

                                      Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      • C:\ProgramData\mozglue.dll

                                        Filesize

                                        133KB

                                        MD5

                                        8f73c08a9660691143661bf7332c3c27

                                        SHA1

                                        37fa65dd737c50fda710fdbde89e51374d0c204a

                                        SHA256

                                        3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

                                        SHA512

                                        0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

                                      • C:\ProgramData\nss3.dll

                                        Filesize

                                        1.2MB

                                        MD5

                                        bfac4e3c5908856ba17d41edcd455a51

                                        SHA1

                                        8eec7e888767aa9e4cca8ff246eb2aacb9170428

                                        SHA256

                                        e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

                                        SHA512

                                        2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

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

                                        Filesize

                                        20KB

                                        MD5

                                        49693267e0adbcd119f9f5e02adf3a80

                                        SHA1

                                        3ba3d7f89b8ad195ca82c92737e960e1f2b349df

                                        SHA256

                                        d76e7512e496b7c8d9fcd3010a55e2e566881dc6dacaf0343652a4915d47829f

                                        SHA512

                                        b4b9fcecf8d277bb0ccbb25e08f3559e3fc519d85d8761d8ad5bca983d04eb55a20d3b742b15b9b31a7c9187da40ad5c48baa7a54664cae4c40aa253165cbaa2

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

                                        Filesize

                                        124KB

                                        MD5

                                        acdea8b59e563ac19cffeaaca781bf14

                                        SHA1

                                        06fbe02adfa3be384016ac8c8bb0eb9c709a7a1d

                                        SHA256

                                        44e20ead00be34f17e2be7ef7941d68934e29aa3f24ce88d9c763ec4740bd7ca

                                        SHA512

                                        edd9b6a49594c683ce7d6065177fe720021e6ef46f2f9c7f684d29daf77ca9649d5c378a6fadbded0150312a19c6e374798d56f6871ea62df9313a2293514d2f

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

                                        Filesize

                                        116KB

                                        MD5

                                        f70aa3fa04f0536280f872ad17973c3d

                                        SHA1

                                        50a7b889329a92de1b272d0ecf5fce87395d3123

                                        SHA256

                                        8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

                                        SHA512

                                        30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

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

                                        Filesize

                                        11KB

                                        MD5

                                        bb55172a8bd4c93b2780e837cce054f4

                                        SHA1

                                        7e890e6af6b7734f05f44119862f035304c3686e

                                        SHA256

                                        18a2b864eeb4243bdc0a7d0083e10773986619d51d2a6336c6da8af3b14ffe75

                                        SHA512

                                        e9cc7c1bcf98c716d70b787abab5f00782136011b3e3ae70c85ca2a45a5432b21c4327ec13bd3faccb3150fd978b714e6a635aebd0ee4d61b5d11745f0b350b6

                                      • C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe

                                        Filesize

                                        364KB

                                        MD5

                                        a5a77a06940cb5c8933934b8c9e4ac27

                                        SHA1

                                        a4d0bebefcbef7b718acd9f2e69a9b7767213a51

                                        SHA256

                                        7626e47624b6d66f33395c1c0febb9d8f2c8eb9197ad4eda6c61f86f8660b7b8

                                        SHA512

                                        dcaaabc990fd6f971810887a27cd7204bf5cc3cd16e7f4ac0712e41a277051980a079f4b9ea181d1d4509aa56b6b74d454ad2877b50e67029080adb79e7a5aad

                                      • C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe

                                        Filesize

                                        364KB

                                        MD5

                                        a5a77a06940cb5c8933934b8c9e4ac27

                                        SHA1

                                        a4d0bebefcbef7b718acd9f2e69a9b7767213a51

                                        SHA256

                                        7626e47624b6d66f33395c1c0febb9d8f2c8eb9197ad4eda6c61f86f8660b7b8

                                        SHA512

                                        dcaaabc990fd6f971810887a27cd7204bf5cc3cd16e7f4ac0712e41a277051980a079f4b9ea181d1d4509aa56b6b74d454ad2877b50e67029080adb79e7a5aad

                                      • C:\Users\Admin\AppData\Local\Temp\u3ec.0.exe

                                        Filesize

                                        364KB

                                        MD5

                                        a5a77a06940cb5c8933934b8c9e4ac27

                                        SHA1

                                        a4d0bebefcbef7b718acd9f2e69a9b7767213a51

                                        SHA256

                                        7626e47624b6d66f33395c1c0febb9d8f2c8eb9197ad4eda6c61f86f8660b7b8

                                        SHA512

                                        dcaaabc990fd6f971810887a27cd7204bf5cc3cd16e7f4ac0712e41a277051980a079f4b9ea181d1d4509aa56b6b74d454ad2877b50e67029080adb79e7a5aad

                                      • memory/332-153-0x0000000000400000-0x000000000043D000-memory.dmp

                                        Filesize

                                        244KB

                                      • memory/332-192-0x0000000000400000-0x000000000043D000-memory.dmp

                                        Filesize

                                        244KB

                                      • memory/332-150-0x0000000000400000-0x000000000043D000-memory.dmp

                                        Filesize

                                        244KB

                                      • memory/332-156-0x0000000000400000-0x000000000043D000-memory.dmp

                                        Filesize

                                        244KB

                                      • memory/332-166-0x0000000060900000-0x0000000060992000-memory.dmp

                                        Filesize

                                        584KB

                                      • memory/3940-155-0x00000000006C0000-0x00000000006EA000-memory.dmp

                                        Filesize

                                        168KB

                                      • memory/3940-154-0x000000000071C000-0x000000000073D000-memory.dmp

                                        Filesize

                                        132KB