Analysis

  • max time kernel
    78s
  • max time network
    77s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2024 11:49

General

  • Target

    https://github.com/rombus-PREMIUM/rombus-9-grabber/blob/main/rombus-9-grabber.exe

Malware Config

Signatures

  • Contains code to disable Windows Defender 2 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 2 IoCs
  • Stormkitty family
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • NTFS ADS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --start-maximized --single-argument https://github.com/rombus-PREMIUM/rombus-9-grabber/blob/main/rombus-9-grabber.exe
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4088
    • 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,0x100,0x104,0xd8,0x108,0x7ffe5c5846f8,0x7ffe5c584708,0x7ffe5c584718
      2⤵
        PID:3044
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2144 /prefetch:2
        2⤵
          PID:2972
        • 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=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2216 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3112
        • 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=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2680 /prefetch:8
          2⤵
            PID:3120
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --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:3052
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --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=3356 /prefetch:1
              2⤵
                PID:4164
              • 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=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5380 /prefetch:8
                2⤵
                  PID:3600
                • 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=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5380 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1328
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --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=5424 /prefetch:1
                  2⤵
                    PID:1780
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --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=4168 /prefetch:1
                    2⤵
                      PID:2840
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --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=3084 /prefetch:1
                      2⤵
                        PID:3588
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --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=5620 /prefetch:1
                        2⤵
                          PID:524
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=3496 /prefetch:8
                          2⤵
                            PID:2012
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3588 /prefetch:1
                            2⤵
                              PID:1544
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=6228 /prefetch:8
                              2⤵
                                PID:4544
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=2132,427297007996740744,14619768128954921627,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6272 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1232
                              • C:\Users\Admin\Downloads\rombus-9-grabber.exe
                                "C:\Users\Admin\Downloads\rombus-9-grabber.exe"
                                2⤵
                                • Executes dropped EXE
                                • Adds Run key to start application
                                • NTFS ADS
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:840
                              • C:\Users\Admin\Downloads\rombus-9-grabber.exe
                                "C:\Users\Admin\Downloads\rombus-9-grabber.exe"
                                2⤵
                                • Executes dropped EXE
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:3624
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:2604
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:3492
                                • C:\Windows\System32\rundll32.exe
                                  C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                  1⤵
                                    PID:2372
                                  • C:\Users\Admin\Downloads\rombus-9-grabber.exe
                                    "C:\Users\Admin\Downloads\rombus-9-grabber.exe"
                                    1⤵
                                    • Executes dropped EXE
                                    • Suspicious behavior: EnumeratesProcesses
                                    • Suspicious use of AdjustPrivilegeToken
                                    PID:5004

                                  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

                                    fab8d8d865e33fe195732aa7dcb91c30

                                    SHA1

                                    2637e832f38acc70af3e511f5eba80fbd7461f2c

                                    SHA256

                                    1b034ffe38e534e2b7a21be7c1f207ff84a1d5f3893207d0b4bb1a509b4185ea

                                    SHA512

                                    39a3d43ef7e28fea2cb247a5d09576a4904a43680db8c32139f22a03d80f6ede98708a2452f3f82232b868501340f79c0b3f810f597bcaf5267c3ccfb1704b43

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

                                    Filesize

                                    152B

                                    MD5

                                    36988ca14952e1848e81a959880ea217

                                    SHA1

                                    a0482ef725657760502c2d1a5abe0bb37aebaadb

                                    SHA256

                                    d7e96088b37cec1bde202ae8ec2d2f3c3aafc368b6ebd91b3e2985846facf2e6

                                    SHA512

                                    d04b2f5afec92eb3d9f9cdc148a3eddd1b615e0dfb270566a7969576f50881d1f8572bccb8b9fd7993724bdfe36fc7633a33381d43e0b96c4e9bbd53fc010173

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                    Filesize

                                    1KB

                                    MD5

                                    1288ff7597b10f7ed4c22c6f7f715dca

                                    SHA1

                                    d5ea66bb91c5df80680a655ad4c32915626f6a30

                                    SHA256

                                    445cf1b75822704bdece3757bc63f532bf18ac964e2c9b5f2a9c29940a7fd5c7

                                    SHA512

                                    496d35c15bcbd6c13e01f77f6eae5747f9247e5080b88c82eccea9ae43c9c71d2025c75f711226042299735d8dda8cbf552f4044f1552ff66678fd0fcf96eba0

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

                                    Filesize

                                    579B

                                    MD5

                                    ed5f4213c17629776cd75510648fc019

                                    SHA1

                                    ebfa685dca9b7c920cd5ad521c03e4ad0ce435b9

                                    SHA256

                                    e969795f0e63ec8a35cdf34d5bc43867ca0825bebfed9734943e69b34ed2ad87

                                    SHA512

                                    71bcc166ae5a48f7a79aa5de7ecc7e10dce22c39240ca9ffe9d0f9340f40fc2a2429529cfee8b2b5d7082efe94921fa7df3454852d5313ff4093bfdffc189627

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

                                    Filesize

                                    6KB

                                    MD5

                                    06077f72b386289c237e169dd113fc79

                                    SHA1

                                    5358bcefd22ba6f3f32687dfad5da3539e454802

                                    SHA256

                                    d4bd4fc4118a3691e5826adaa76b069c780fa813e5c3ed71214ce2fa3fe56261

                                    SHA512

                                    7b08dd2e134d0881dc1f80fc8442aa75d44ff8ee892686a80bdbcebf81c89c9b60756899df40c1c245ebf4cdc45e4e0f4d8f40a1a23353cdc911061879c15a85

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

                                    Filesize

                                    5KB

                                    MD5

                                    a1c7b76e3fc99ccf4ca649ca005132e9

                                    SHA1

                                    6450e447780268fcf12a4cbbd02c87272ce85bee

                                    SHA256

                                    4173d73a697ba68ce0937983b46c5eb038d5bbccb15bd3804a67b82538f52eb8

                                    SHA512

                                    822110d98c6b59240a22581659c418f00b387b412bd567731d5e5464e2684a7ea2ddeb4f27b2d2f20ad870f36c171bd1626535916e99dc4ed6bd0cca03f2d602

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

                                    Filesize

                                    6KB

                                    MD5

                                    afa2ead3a885b880e505d209bdc7b57d

                                    SHA1

                                    9e6db3d4ea5ad7d65ae2f6a00d65d420eb7b1d6e

                                    SHA256

                                    07bf4aa533d25c34195ebbb84d5b6fe17391ddbe6b2c9e1dd7011171bf269bfd

                                    SHA512

                                    658147ba527cde18e7d3f1c7926bacaa974de9a3ab1031ef9f22a403bacaf22735cb93fd037e17a2b51e0d7aaf3d811c4c8821be9b117dd7b4c0061de265a069

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

                                    Filesize

                                    1KB

                                    MD5

                                    d224fcc4b5ecfbafab53f19acb177f2d

                                    SHA1

                                    96c2a3e9dc994bc5e9166c1ee95e2fc34641f31f

                                    SHA256

                                    0cd1448fc929b717ee0a526133502ef55795dd6565923ec081f92460afe147d6

                                    SHA512

                                    17f81299b4b309591f35bfc4ba7fc763bf66238a93d46bae8069c1d53a205668daa8886e2fe0680507b35eee2f1b2c3f1269a408e95deba6ebb275efa24acc09

                                  • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity~RFe5bbd9f.TMP

                                    Filesize

                                    1KB

                                    MD5

                                    3830d3447fc2fb56e1b5c2dcac1ee6d3

                                    SHA1

                                    8b4ea881fd7792bb9cadb59f0436db2b644de96b

                                    SHA256

                                    f831a1933245716d4c8b29750e487306672caa4d3b58072ec984722f8086ca87

                                    SHA512

                                    8101ad6c55497e0687b247a5fd0facbe5efb27791429ae423856ca9b752bdcd92d85226a269cacb77382ca6cd2e7a13d6bc6f88f2c3fb1cd456d9db55dfcc6da

                                  • 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

                                    5a5bdec77e0b2c3bba9651a73aa80e33

                                    SHA1

                                    204700d84da2a29bc99dc6e08a80c6655143ed95

                                    SHA256

                                    34f9715a3722f2818448c680b7c478b3e1873b752ce65ae041d33d368bde0c41

                                    SHA512

                                    9243d56f4ca3487a38edf91971b9b0e123e22bb298a51b5e3d5eba82d33e6dc5873b388c04fa3ad649607970f11474da3a61e5386e48944b0d3a0ca332a6121c

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

                                    Filesize

                                    10KB

                                    MD5

                                    f7f82aac91628b4b450ddcc3fdf366e5

                                    SHA1

                                    98d0c434fd6d14e226c25e4386a8e5247970c0cf

                                    SHA256

                                    787290dbfc6892e82ca7e28e63ed842a00a8dc73c932f0f9bb18098c6afc2d85

                                    SHA512

                                    9ab9a0bbbe06618c2aa70b82cb0fde3b119ec52303542281da9fdaaebad3999e4d9d7367ba9efee0758be4f91fc7841075a1c5d586cffc78e75df870a1cbf9d3

                                  • C:\Users\Admin\Downloads\Unconfirmed 170386.crdownload

                                    Filesize

                                    82KB

                                    MD5

                                    a1a974c17251c93f66d102d1d0106af1

                                    SHA1

                                    bd545e18a5f9f44bfe1113b612bf231baa5ad4ec

                                    SHA256

                                    0e84dcca5effe9e6da099694e1455b2e42437c598fec6a1838b763c7a4d812ba

                                    SHA512

                                    00ad93244bb8c43758a1f253551c11b2c4142ef6d76fc4c31bced41ebe1d2e236615f1acfdf98df6e6d4e1cc6b48bc2611bc6df048f793fc59133cce45594e48

                                  • memory/840-220-0x0000000000360000-0x000000000037A000-memory.dmp

                                    Filesize

                                    104KB