Analysis

  • max time kernel
    1800s
  • max time network
    1692s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2023 04:27

General

  • Target

    http://valhalla.nextron-systems.com

Malware Config

Signatures

  • Cobalt Strike reflective loader 2 IoCs

    Detects the reflective loader used by Cobalt Strike.

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Industroyer

    Also known as CrashOverride. Malware framework which targets Industrial Control Systems (ICS) related to power transmission.

  • Industroyer IEC-104 Module 2 IoCs

    Contains strings related to Industroyer module used to communicate with power transmission grids over IEC-104 protocol.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 33 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 23 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" "--simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT'" http://valhalla.nextron-systems.com
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff99adc9758,0x7ff99adc9768,0x7ff99adc9778
      2⤵
        PID:1524
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1792 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:2
        2⤵
          PID:100
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2148 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:8
          2⤵
            PID:1864
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2232 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:8
            2⤵
              PID:1192
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=3000 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:1
              2⤵
                PID:2700
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3016 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:1
                2⤵
                  PID:1064
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=7 --mojo-platform-channel-handle=4480 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:1
                  2⤵
                    PID:4384
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3864 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:8
                    2⤵
                      PID:2236
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4940 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:8
                      2⤵
                        PID:2016
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4316 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:8
                        2⤵
                          PID:4256
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=912 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:8
                          2⤵
                            PID:1968
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --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=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1668 --field-trial-handle=1856,i,16058636223366492972,6606689871662581698,131072 /prefetch:2
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:3444
                        • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                          "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                          1⤵
                            PID:4604
                          • C:\Windows\system32\OpenWith.exe
                            C:\Windows\system32\OpenWith.exe -Embedding
                            1⤵
                            • Modifies registry class
                            • Suspicious use of SetWindowsHookEx
                            PID:1580
                            • C:\Windows\system32\NOTEPAD.EXE
                              "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Downloads\valhalla-rules.yar
                              2⤵
                                PID:4412

                            Network

                            MITRE ATT&CK Matrix ATT&CK v6

                            Discovery

                            Query Registry

                            1
                            T1012

                            System Information Discovery

                            1
                            T1082

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index
                              Filesize

                              96B

                              MD5

                              8a8637deebb6e28656999a999df2a351

                              SHA1

                              6b5ef9e1dfd857de89c4639f68d8a946b0f3c89f

                              SHA256

                              ce4e2682c33d50479f30b1ca57383c704504eccc7c709397540217693ddcd17f

                              SHA512

                              27f2b75e43e11d565f796ecc0268faffe21f22685bc15610b8f3de1af99d6ac04fe3aca3106470340dd46d2d0efb4a960b5e965d42899c66a858b9b8ad5a287c

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                              Filesize

                              1KB

                              MD5

                              3cc47617314c40f1240731aca2ee29c5

                              SHA1

                              c7d20bd257b1d237a46ac717826c595233e248f0

                              SHA256

                              9812f42a261fe0c853764574c6a89edb42fcd4040868c21d424c12a28791526b

                              SHA512

                              c24f2b899fa927ccddb6a15aa94640d64e0e5c7cb3ed0130fd8942d7d2ecac9b79ced79ca8fe5b0a00ac11485005221b5fee96802a60f3d04f7cac0d2a98e98b

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                              Filesize

                              539B

                              MD5

                              61e85615d3348d97f988d2acb83a9c45

                              SHA1

                              13002259476dd75240e7ab77b6ca239836396212

                              SHA256

                              8286c13cec5bbe538495ab0cfbb33045e2fbd95781cc98e8a42e990eae2fde15

                              SHA512

                              79b574a312fd3b493f90f2d069a50103df9ef865c12cd0df8881f3677c4cdfb44079eb3b6daecd971789bc1e6a0ee67d06274068168ee05852a2e2ee39471444

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                              Filesize

                              4KB

                              MD5

                              c735d02f02925facebb6d5fe074bbfe6

                              SHA1

                              f228495f00025523b7e83d36441975d8d523b6a5

                              SHA256

                              e05268f696fa61b742c7d430fa7b969133968dc588f682bcb12a6591d58c2050

                              SHA512

                              3dbb1674fe2494ebff8f7d0b147158a6ede206e658fd9f8f15874124a5e371a449cb2cab722b65e3fd73f56a8f504659af2b28207b6ef48d56d8adb64eed71d2

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                              Filesize

                              4KB

                              MD5

                              6ae241bd964bfd07260940c7870e8add

                              SHA1

                              12e7e1deb196dea34b2307e16dedb221e2d8d4b5

                              SHA256

                              afccf11ee6cccee99727a047d9c3b1ef5562b9f7623f7ba87b01d8cbb30a72e2

                              SHA512

                              1a1ccc45177931b3a5bbf163ccb12677c648ed692a17050e4831bf642ea0889e80ca7e86c39e2472ec8b46278b0cc87eaa431e531da5db651acc0da4ed4dd450

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                              Filesize

                              4KB

                              MD5

                              7d41c5426aeab5d0884634acd0d41233

                              SHA1

                              e8865765f72708abc9b6845912f6cfbdc86cb382

                              SHA256

                              be6d18ee36704e582a3039c73acdbc76796fa8c56c7b7e935c7fc3b6a8002e50

                              SHA512

                              119f44671706381110072a4f362581e48c1a6821b3647b33833b7c14d15ac7add895f2bf70bff4b586e76b06c853669a8fb9cb10306b41c1c5b4f1ef3ee442bc

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                              Filesize

                              4KB

                              MD5

                              f16c3daa8cb29e67c2a78acbac855613

                              SHA1

                              37a8fb03a8ff5c5ce424ece5d228ee5513d0083c

                              SHA256

                              7af10c878bcbc707c02649e9e4feee3e5d44d9cf6f5f24d1e7726a910b6d4b27

                              SHA512

                              0961cbc8017720d9594ea7be054f61746332f9ff7b13149fee71e1730e393c27067a7a54464a57894a3f7864ccb32aca0d044b88f6a7814f906944ac7b8067c2

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                              Filesize

                              144KB

                              MD5

                              009ebae68dca7c7ce4773c0eeae53baa

                              SHA1

                              da04cada9d252bd47f416d8dfb36eda463a87d30

                              SHA256

                              2cc96f256ccc5cd4eb9b1e4e79f9911711b4638382338d73e9c1eb1e0581d5ac

                              SHA512

                              b033a34b4d6d121159246ad1de2454bf3247898383f9bdb511929df48b52a0fb564a1ab43fd78a1b39315042328d90fbf65e038de2b95e07465cf37c187ec43c

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache
                              Filesize

                              110KB

                              MD5

                              674d25aefe7e7561e2ed2790ec2517ea

                              SHA1

                              1396fe0c1849f6bbfab9d6bb375cb014eca1c4ce

                              SHA256

                              e0ecc4c1083987163e58320750f283f7edc7d45ca8447e340aee17358ae59be4

                              SHA512

                              41380dd95e15939d6d3e6a404dbff270dfccee82f586740c55ed58eb9cfd93222ab8addbc5593fe162bd58829cbba4eb9d0d4b37211c63463b7303a0700e62c8

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache~RFe57eafc.TMP
                              Filesize

                              100KB

                              MD5

                              30faaf0f4d9a7406da14bbe15853cbba

                              SHA1

                              568de821f31137ec783ecb69a9328df1bd3b4128

                              SHA256

                              df1fa68ed15b2412db604701dddbde17d360584d5f09ba8d7fcb2fc620ff7aa2

                              SHA512

                              db499543af14484d03abf65e1810ea10f0685c63ea8ef880ebd5f6903f352f48035c82aa084b2beb22d4c28ab3355fa7a78931616defce24487b3ceec4f19ecc

                            • C:\Users\Admin\Downloads\valhalla-rules.yar
                              Filesize

                              2.2MB

                              MD5

                              1a4ac1b1bad9a801c4520808a313fcac

                              SHA1

                              de4f68d1c6a12ff8e79b6e53bfee0c865f91ce65

                              SHA256

                              c50c2a54faac977abdb1d73ad864e1cc30e4ca5ca8fd634390c0356d5671367f

                              SHA512

                              b0396950ed2aba7982944652f3f0ae442a28750058f2dda5538302e8dcf3782e3e90a2fd15fa1d3ee799c79e292d70f4453bc05b05f8aa8973d97d0796c2dd54

                            • C:\Users\Admin\Downloads\valhalla-rules.yar.crdownload
                              Filesize

                              2.2MB

                              MD5

                              1a4ac1b1bad9a801c4520808a313fcac

                              SHA1

                              de4f68d1c6a12ff8e79b6e53bfee0c865f91ce65

                              SHA256

                              c50c2a54faac977abdb1d73ad864e1cc30e4ca5ca8fd634390c0356d5671367f

                              SHA512

                              b0396950ed2aba7982944652f3f0ae442a28750058f2dda5538302e8dcf3782e3e90a2fd15fa1d3ee799c79e292d70f4453bc05b05f8aa8973d97d0796c2dd54

                            • \??\pipe\crashpad_2544_MFBFCBBAIXTIVRPE
                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e