Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/06/2024, 22:41

General

  • Target
    __3GqLWGmDyooI5CmFz9ril.exe
  • Size 179KB
  • Sample240613-2l5dcaxcnl
  • SHA256 d5965f21df0867fe7d0885a006667390d61b55f6d5ff6ad706a021bf0ebf13ea
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

Version
  • 3.1

C2
  • astaaa.ddnsfree.com:1177

Mutex
  • WtJQOp11bCLfrAjG

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\__3GqLWGmDyooI5CmFz9ril.exe
    "C:\Users\Admin\AppData\Local\Temp\__3GqLWGmDyooI5CmFz9ril.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4356
    • C:\Users\Admin\AppData\Roaming\__3GqLWGmDyoI5CmFz9ril.exe
      "C:\Users\Admin\AppData\Roaming\__3GqLWGmDyoI5CmFz9ril.exe"
      2⤵
      • Executes dropped EXE
      PID:448
    • C:\Users\Admin\AppData\Roaming\System Host Display Windows.exe
      "C:\Users\Admin\AppData\Roaming\System Host Display Windows.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Sets desktop wallpaper using registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3308
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\How To Decrypt My Files.html
        3⤵
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:4848
        • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ffbe2eb46f8,0x7ffbe2eb4708,0x7ffbe2eb4718
          4⤵
            PID:2452
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2200 /prefetch:2
            4⤵
              PID:1740
            • 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=2188,7511129443119100553,9405838462214275745,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2252 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:4692
            • 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=2188,7511129443119100553,9405838462214275745,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2916 /prefetch:8
              4⤵
                PID:4868
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --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=3316 /prefetch:1
                4⤵
                  PID:4284
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3324 /prefetch:1
                  4⤵
                    PID:2360
                  • 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=2188,7511129443119100553,9405838462214275745,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5216 /prefetch:8
                    4⤵
                      PID:1912
                    • 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=2188,7511129443119100553,9405838462214275745,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5216 /prefetch:8
                      4⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3688
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5308 /prefetch:1
                      4⤵
                        PID:4148
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --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=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5324 /prefetch:1
                        4⤵
                          PID:1948
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --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=4928 /prefetch:1
                          4⤵
                            PID:3984
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2188,7511129443119100553,9405838462214275745,131072 --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=3352 /prefetch:1
                            4⤵
                              PID:3876
                      • C:\Windows\System32\CompPkgSrv.exe
                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                        1⤵
                          PID:4980
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:2260

                          Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                settings.dat

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                • Size 152B
                                • SHA256 a358de2c0eba30c70a56022c44a3775aa99ffa819cd7f42f7c45ac358b5e739f
                                • MD5 SHA1 SHA512

                                settings.dat

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                • Size 152B
                                • SHA256 c9cd202ebb55fe8dd3e5563948bab458e947d7ba33bc0f38c6b37ce5d0bd7c3e
                                • MD5 SHA1 SHA512

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                • Size 6KB
                                • SHA256 4039b270a87962a391ca0ce60603558e457f070e4bc1597a7726980f8b4b94ba
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                • Size 6KB
                                • SHA256 5313173638ccae38280af3535340dda2e72a72aec133c4952c7516585c3b6874
                                • MD5 SHA1 SHA512 SSDEEP

                                CURRENT

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                • Size 16B
                                • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                • MD5 SHA1 SHA512

                                Local State

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                • Size 11KB
                                • SHA256 59f2458d8c49f0ff099f38386a0986df9d3c709eaa9e2d0d701c5b0b8cabeabe
                                • MD5 SHA1 SHA512 SSDEEP

                                System Host Display Windows.exe

                                • Path C:\Users\Admin\AppData\Roaming\System Host Display Windows.exe
                                • Size 31KB
                                • SHA256 b9c0b23ad7bc8b077202ea84b40a222dafa3f7e14301ad5986d0f06eb3eed232
                                • MD5 SHA1 SHA512 SSDEEP

                                __3GqLWGmDyoI5CmFz9ril.exe

                                • Path C:\Users\Admin\AppData\Roaming\__3GqLWGmDyoI5CmFz9ril.exe
                                • Size 136KB
                                • SHA256 d307829b6114eb9fee109cd80558e82f8fd9a9f46358970383d8923ad1571a06
                                • MD5 SHA1 SHA512 SSDEEP

                                How To Decrypt My Files.html

                                • Path C:\Users\Admin\Desktop\How To Decrypt My Files.html
                                • Size 723B
                                • SHA256 bfbb59fa451071b37088b6286c3e5941f2536c4d9a1b77c1c6e987da9545b6ae
                                • MD5 SHA1 SHA512

                                NTUSER.DAT{53b39e88-18c4-11ea-a811-000d3aa4692b}.TMContainer00000000000000000001.regtrans-ms.ENC

                                • Path C:\Users\Admin\NTUSER.DAT{53b39e88-18c4-11ea-a811-000d3aa4692b}.TMContainer00000000000000000001.regtrans-ms.ENC
                                • Size 16B
                                • SHA256 b1be54e9d57ad9678740a73c896a77da02c9fc6a85d249ef4eff433468f8d2a0
                                • MD5 SHA1 SHA512

                                memory/448-32-0x00000000001D0000-0x00000000001F6000-memory.dmp

                                memory/3308-26-0x00007FFBE65B0000-0x00007FFBE7071000-memory.dmp

                                memory/3308-42-0x0000000000990000-0x000000000099C000-memory.dmp

                                memory/3308-35-0x00007FFBE65B0000-0x00007FFBE7071000-memory.dmp

                                memory/3308-34-0x00007FFBE65B0000-0x00007FFBE7071000-memory.dmp

                                memory/3308-31-0x00007FFBE65B0000-0x00007FFBE7071000-memory.dmp

                                memory/3308-24-0x00000000002C0000-0x00000000002CE000-memory.dmp

                                memory/4356-0-0x00007FFBE65B3000-0x00007FFBE65B5000-memory.dmp

                                memory/4356-1-0x0000000000CA0000-0x0000000000CD2000-memory.dmp