Resubmissions

22-05-2024 07:50

240522-jpeb8agg24 10

22-05-2024 07:46

240522-jlztragf56 10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 07:46

General

  • Target

    Valkyria.exe

  • Size

    8.2MB

  • MD5

    1626922cadeeedea404cadfe628d7e16

  • SHA1

    9323dbefdd49c84ae79e188b79bac5cee2ab6a6e

  • SHA256

    202faa66219e927a3b57d90ee9b2b4fbd309ed72ff89a7e28d7668ca08d0fd49

  • SHA512

    80d0d6b93a8b85e2ed0fb6dee775b6f40f6d39381640c8e8ab3309f58e84d8b17e86b321849a2ffdfa4b7dd39736730b5a1d822f95a20153c1d41d52b604a9e0

  • SSDEEP

    196608:68oppJhh2fJB0ZOFkGEWZd7HFApko0eYOiKddHB2icEPld6aGXAr5xN:6jppJEJB0ZOFNVZRlekSFPvHlQAxN

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot5865379362:AAEUbyvhTdYJ7SmCp7YyfRe8OBV_Jrj9iqg/sendMessage?chat_id=5481385928

Signatures

  • BlackGuard

    Infostealer first seen in Late 2021.

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 5 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
  • Looks up external IP address via web service 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 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\Valkyria.exe
    "C:\Users\Admin\AppData\Local\Temp\Valkyria.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:932
    • C:\Users\Admin\AppData\Local\Temp\zkzkzkz.exe
      "C:\Users\Admin\AppData\Local\Temp\zkzkzkz.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:452
      • C:\Users\Admin\AppData\Local\Temp\server.exe
        "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3200
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          PID:4244
    • C:\Users\Admin\AppData\Local\Temp\Everything.exe
      "C:\Users\Admin\AppData\Local\Temp\Everything.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3464
      • C:\Users\Admin\AppData\Local\Temp\Natasha.exe
        "C:\Users\Admin\AppData\Local\Temp\Natasha.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1224
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --profile-directory=Default
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4884
    • 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=0x11c,0x120,0x124,0xf8,0x128,0x7fffe40a46f8,0x7fffe40a4708,0x7fffe40a4718
      2⤵
        PID:3976
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2064,6334356850100397099,8981795619975054058,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2076 /prefetch:2
        2⤵
          PID:3664
        • 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=2064,6334356850100397099,8981795619975054058,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2140 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4516
        • 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=2064,6334356850100397099,8981795619975054058,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2688 /prefetch:8
          2⤵
            PID:4944
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2064,6334356850100397099,8981795619975054058,131072 --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=3308 /prefetch:1
            2⤵
              PID:4112
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2064,6334356850100397099,8981795619975054058,131072 --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=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3324 /prefetch:1
              2⤵
                PID:2624
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2064,6334356850100397099,8981795619975054058,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4088 /prefetch:1
                2⤵
                  PID:1260
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2064,6334356850100397099,8981795619975054058,131072 --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=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4940 /prefetch:1
                  2⤵
                    PID:8
                • C:\Windows\System32\CompPkgSrv.exe
                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                  1⤵
                    PID:3980
                  • C:\Windows\System32\CompPkgSrv.exe
                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                    1⤵
                      PID:2072

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

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

                      Filesize

                      152B

                      MD5

                      ea98e583ad99df195d29aa066204ab56

                      SHA1

                      f89398664af0179641aa0138b337097b617cb2db

                      SHA256

                      a7abb51435909fa2d75c6f2ff5c69a93d4a0ab276ed579e7d8733b2a63ffbee6

                      SHA512

                      e109be3466e653e5d310b3e402e1626298b09205d223722a82344dd78504f3c33e1e24e8402a02f38cd2c9c50d96a303ce4846bea5a583423937ab018cd5782f

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

                      Filesize

                      5KB

                      MD5

                      e4f168dfc66b47b1746adb82e92f90f7

                      SHA1

                      dcf48616b60e50b9249ec42e4a2c5952d701c4a4

                      SHA256

                      e8009b86238486d8cb4b8fbdd562efa6ecdeef8366120dd314069c2ea445ab28

                      SHA512

                      7e5c47da3ae7a1fb1743265d4ea50c6a922923e7e14cb70f26826f33800282e4fd91f6476fdb665895114f18fcdece478163519809cee1cf848f11a9d6964b8d

                    • C:\Users\Admin\AppData\Local\Temp\Everything.exe

                      Filesize

                      7.7MB

                      MD5

                      37f6f35584fac7f216e69e813d4b7c10

                      SHA1

                      ddb093f14e5f2beb0512ac828448ff06d0237312

                      SHA256

                      cc17414b5bd2db809411f93256535e78d0c97f42fe86b6cc3119aa7c33c6e3c3

                      SHA512

                      917368e662428827f8477cc5915e41f6a06324f0e49721f807a6003740749261a219a25cd3d9a43d1a5714c73930e4b2da1240d2a9f108a62b11f990dc42a09e

                    • C:\Users\Admin\AppData\Local\Temp\Natasha.exe

                      Filesize

                      270KB

                      MD5

                      0ad61d702d2aca6801a833ec1d4bf5f7

                      SHA1

                      d4117c6c5c0ae71ee0ccd2554ab40fe69796c519

                      SHA256

                      e4668273e4cafe5a9a083eaa0d4d52ca1ba707e37ecb715c1b97de1dbb67faf4

                      SHA512

                      a0743430cabc74edb8600c71a4513ab83d21542a8088d230cd15e070d6b2b2d70dab057dd1bbd1968836bc0f3b3aceb90b98024b889503c6a28926475185e6ec

                    • C:\Users\Admin\AppData\Local\Temp\Newtonsoft.Json.dll

                      Filesize

                      571KB

                      MD5

                      169b6d383b7c650ab3ae2129397a6cf3

                      SHA1

                      fcaef7defb04301fd55fb1421bb15ef96d7040d6

                      SHA256

                      b896083feb2bdedc1568b62805dbd354c55e57f2d2469a52aec6c98f4ec2dedf

                      SHA512

                      7a7a7bdb508b8bf177249251c83b65a2ef4a5d8b29397cab130cb8444b23888678673a9a2e4b1c74cc095b358f923b9e7e5a91bfa8c240412d95765851f1dd87

                    • C:\Users\Admin\AppData\Local\Temp\SQLite.Interop.dll

                      Filesize

                      1.3MB

                      MD5

                      0a1e95b0b1535203a1b8479dff2c03ff

                      SHA1

                      20c4b4406e8a3b1b35ca739ed59aa07ba867043d

                      SHA256

                      788d748b4d35dfd091626529457d91e9ebc8225746211086b14fb4a25785a51e

                      SHA512

                      854abcca8d807a98a9ad0ca5d2e55716c3ce26fae7ee4642796baf415c3cfad522b658963eafe504ecaed6c2ecdcdf332c9b01e43dfa342fcc5ca0fbedfe600e

                    • C:\Users\Admin\AppData\Local\Temp\System.Data.SQLite.dll

                      Filesize

                      410KB

                      MD5

                      056d3fcaf3b1d32ff25f513621e2a372

                      SHA1

                      851740bca46bab71d0b1d47e47f3eb8358cbee03

                      SHA256

                      66b64362664030bff1596cda2ec5bd5df48cc7c8313c32f771db4aa30a3f86f9

                      SHA512

                      ce47c581538f48a46d70279a62c702195beacbfafb48a5a862b3922625fe56f6887d1679c6d9366f946d3d2124cb31c2a3eacbbd14d601ea56e66575cdf46180

                    • C:\Users\Admin\AppData\Local\Temp\zkzkzkz.exe

                      Filesize

                      93KB

                      MD5

                      ac79af1c488ed1bc1b289e0eb8d89714

                      SHA1

                      913ceaaaf7664bb83a496ebe746b6d12bb1e5e9a

                      SHA256

                      dc8e217ced1f36323ce6c237fdaa330e342063a819c13defe3b248ee84c1d492

                      SHA512

                      cd09c7c5e60ba946f7c83001876f3d5c48eab06c259324a7941161978531a175d00142cd486ff7cf0d2d461a651745808361e894346259ac079cc90eb42022cc

                    • C:\Users\Admin\AppData\Roaming\NZDRBVDBBwVVTwPXNDFZBXDXUA.Admin\Browsers\Firefox\Bookmarks.txt

                      Filesize

                      105B

                      MD5

                      2e9d094dda5cdc3ce6519f75943a4ff4

                      SHA1

                      5d989b4ac8b699781681fe75ed9ef98191a5096c

                      SHA256

                      c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

                      SHA512

                      d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

                    • C:\Users\Admin\AppData\Roaming\NZDRBVDBBwVVTwPXNDFZBXDXUA.Admin\Process.txt

                      Filesize

                      1KB

                      MD5

                      16eb2215358957213d4d8298d02102d1

                      SHA1

                      ba0ecbb3a189c19593b073b807570bac6535427b

                      SHA256

                      c61782b3ff13512c143add7c479a7ea12417b6254790a85b75664eff26f41614

                      SHA512

                      c0410a43e7908c425a82206c21bb403701aca85bfff7918bdcfa5cad03cc67a7c9e8e3f2b096bac505e5081c47a9006a63b90ed42a2760d178081c07551e1546

                    • C:\Users\Admin\AppData\Roaming\app

                      Filesize

                      5B

                      MD5

                      d43c5b07c128b116b7bc8faf7b8efa9d

                      SHA1

                      dd3540ad4ae14b21b665d108cf4570c2dfa6a6fa

                      SHA256

                      80ad1cc7b3a784dad618a445af0c8cf3efa903f82a814756f2aaa7b57f45791f

                      SHA512

                      618b01e2b808e1954d011635dfdf63bc75855145208fc5cae33ce09c7e5b43cf978f6511beb311765e6920e728a290c9f9ced7563e40e8ff8d093d50fdc18334

                    • memory/452-14-0x0000000073FD0000-0x0000000074581000-memory.dmp

                      Filesize

                      5.7MB

                    • memory/452-11-0x0000000073FD2000-0x0000000073FD3000-memory.dmp

                      Filesize

                      4KB

                    • memory/452-133-0x0000000073FD0000-0x0000000074581000-memory.dmp

                      Filesize

                      5.7MB

                    • memory/932-18-0x0000000000400000-0x0000000000C30000-memory.dmp

                      Filesize

                      8.2MB

                    • memory/1224-61-0x00000000061F0000-0x0000000006282000-memory.dmp

                      Filesize

                      584KB

                    • memory/1224-103-0x0000000005C10000-0x0000000005C32000-memory.dmp

                      Filesize

                      136KB

                    • memory/1224-115-0x0000000006A50000-0x0000000006A71000-memory.dmp

                      Filesize

                      132KB

                    • memory/1224-114-0x00000000070F0000-0x000000000712C000-memory.dmp

                      Filesize

                      240KB

                    • memory/1224-120-0x0000000007FE0000-0x00000000081A2000-memory.dmp

                      Filesize

                      1.8MB

                    • memory/1224-108-0x0000000006BF0000-0x0000000006F44000-memory.dmp

                      Filesize

                      3.3MB

                    • memory/1224-109-0x0000000006F50000-0x0000000006F9C000-memory.dmp

                      Filesize

                      304KB

                    • memory/1224-136-0x0000000008760000-0x0000000008D04000-memory.dmp

                      Filesize

                      5.6MB

                    • memory/1224-107-0x0000000006A80000-0x0000000006AE8000-memory.dmp

                      Filesize

                      416KB

                    • memory/1224-224-0x00000000090A0000-0x0000000009106000-memory.dmp

                      Filesize

                      408KB

                    • memory/1224-227-0x0000000009110000-0x0000000009186000-memory.dmp

                      Filesize

                      472KB

                    • memory/1224-228-0x0000000007F60000-0x0000000007F7E000-memory.dmp

                      Filesize

                      120KB

                    • memory/1224-102-0x0000000005C60000-0x0000000005CB0000-memory.dmp

                      Filesize

                      320KB

                    • memory/1224-101-0x0000000005E10000-0x0000000005EA2000-memory.dmp

                      Filesize

                      584KB

                    • memory/1224-50-0x0000000000EE0000-0x0000000000F2A000-memory.dmp

                      Filesize

                      296KB