Resubmissions

25-11-2023 12:15

231125-pe82qsae24 10

25-11-2023 12:14

231125-pedwlaad98 10

25-11-2023 11:56

231125-n316csba21 10

Analysis

  • max time kernel
    27s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2023 11:56

General

  • Target

    Zul Free.exe

  • Size

    230KB

  • MD5

    a47cffac2602038b4cfc070f8a05243a

  • SHA1

    4111453f445d10ef516e98a000cc84845658dabe

  • SHA256

    29456c78a229429c66b4ce8997c9bb6593ad9b4e8928e094eb25caf4a7ee0e40

  • SHA512

    e390d7c96e2b5b2cad52b80c276787cb37d7ca3a171868037c1f1ef9e58177baa9e07f8866e0a95560ee9e0af0a38ba218f9feeaf1f19d77915f9e5c08d4070d

  • SSDEEP

    6144:1loZM+rIkd8g+EtXHkv/iD4tT1FzQEbqCzFQMpxbztjFK8e1mOvi:XoZtL+EP8tT1FzQEbqCzFQMpVpjy0

Score
10/10

Malware Config

Signatures

  • Detect Umbral payload 2 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Zul Free.exe
    "C:\Users\Admin\AppData\Local\Temp\Zul Free.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1716
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2644
    • 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=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6869758,0x7fef6869768,0x7fef6869778
      2⤵
        PID:2588
      • 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=1124 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:2
        2⤵
          PID:1920
        • 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=1484 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:8
          2⤵
            PID:1632
          • 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=1576 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:8
            2⤵
              PID:2784
            • 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=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2244 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:1
              2⤵
                PID:2232
              • 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=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2268 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:1
                2⤵
                  PID:1948
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1332 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:2
                  2⤵
                    PID:1048
                  • 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=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3180 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:1
                    2⤵
                      PID:2252
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=2940 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:8
                      2⤵
                        PID:792
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3524 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:8
                        2⤵
                          PID:3028
                        • 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=3632 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:8
                          2⤵
                            PID:2152
                          • 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=4 --enable-main-frame-before-activation --renderer-client-id=12 --mojo-platform-channel-handle=3700 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:1
                            2⤵
                              PID:2164
                            • 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=4 --enable-main-frame-before-activation --renderer-client-id=13 --mojo-platform-channel-handle=3688 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:1
                              2⤵
                                PID:2724
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=2436 --field-trial-handle=1288,i,17165605037797596597,12531170757350596637,131072 /prefetch:8
                                2⤵
                                  PID:2524
                              • 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:1764
                                • C:\Program Files\VideoLAN\VLC\vlc.exe
                                  "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\ExportWait.mpe"
                                  1⤵
                                    PID:3044
                                  • C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE
                                    "C:\Program Files (x86)\Microsoft Office\Office14\POWERPNT.EXE" "C:\Users\Admin\Desktop\StepCompress.pptx"
                                    1⤵
                                      PID:2652
                                      • C:\Windows\splwow64.exe
                                        C:\Windows\splwow64.exe 12288
                                        2⤵
                                          PID:1032

                                      Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index~RFf775bb7.TMP

                                        Filesize

                                        168B

                                        MD5

                                        f45eea77c4280e90d5e4538c30c57d5d

                                        SHA1

                                        fb2b9a89c678de4ffee56d05126295523726b0f9

                                        SHA256

                                        07f2dc3a6869b233fc0262d3ae55fb53161eb2ad73f09af41ebcd8c99f1b3b0c

                                        SHA512

                                        442f10f1627a923fd4db84ad54a60a1d8fdb9dde69247c2386d968446b499e2bd15fcad1dd2f4f09305b24dd241e341d5e65b6bae1b87f1ffc0759cf70f04779

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                                        Filesize

                                        264KB

                                        MD5

                                        f50f89a0a91564d0b8a211f8921aa7de

                                        SHA1

                                        112403a17dd69d5b9018b8cede023cb3b54eab7d

                                        SHA256

                                        b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                        SHA512

                                        bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

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

                                        Filesize

                                        527B

                                        MD5

                                        2afa1259a75fb394c423a1cf6fdbeb74

                                        SHA1

                                        8094cf0d336e628debebdc7571055f192bef4b23

                                        SHA256

                                        b090bad26084d965b84141891c2e35c8de224f7696a1b382f467b6a63fc4380d

                                        SHA512

                                        f1d21fe5cb733c3c3b5aa3377f23d2dd601af3530e9e2c7451642b606dfee9979d7b951cc19e3a56aced2843cb8ed05e0d30100983704f075c03b430b6d0a0e1

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

                                        Filesize

                                        4KB

                                        MD5

                                        73ab5d1d40db2518474a4fa8b4a5a1e5

                                        SHA1

                                        ba4c256c9f02ab6855ebca430fb17cff1b2d91ef

                                        SHA256

                                        b2bc2ba042f47769e6d7e949b9d85e032fcaf25b447e3377a5ab031ac90ae553

                                        SHA512

                                        552a8963be5bf08db2364b8f1e200c3ff68d4e05d891d05f42703708a5c426cafd3e1ae429a400e25168c374627b24731229fa2dd0fe7838af7abe0bf253c419

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp

                                        Filesize

                                        16B

                                        MD5

                                        18e723571b00fb1694a3bad6c78e4054

                                        SHA1

                                        afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                                        SHA256

                                        8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                                        SHA512

                                        43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\d4d1a0a3-59e2-4b67-85a9-156beeefb563.tmp

                                        Filesize

                                        5KB

                                        MD5

                                        b0e320a87088a6b6e40f63bd7060ec01

                                        SHA1

                                        f5c3697c9de8b28a6c91c2c1dc8e03906df688ba

                                        SHA256

                                        0e558aafd9f1b7745c054fdd3906875590ba04346683483e607b1592c01e619d

                                        SHA512

                                        886f9f39276dc5b32fb6ff967fa3c6cd644dc45615506ea8e76f80594db0ac235dd7d56d0c43625f4cab63c13af430e6fa0073f16a88b1811ee0ce78046caff8

                                      • memory/2276-0-0x0000000000D10000-0x0000000000D50000-memory.dmp

                                        Filesize

                                        256KB

                                      • memory/2276-1-0x000007FEF4F10000-0x000007FEF58FC000-memory.dmp

                                        Filesize

                                        9.9MB

                                      • memory/2276-2-0x00000000021D0000-0x0000000002250000-memory.dmp

                                        Filesize

                                        512KB

                                      • memory/2276-3-0x000007FEF4F10000-0x000007FEF58FC000-memory.dmp

                                        Filesize

                                        9.9MB

                                      • memory/2652-182-0x000000005FFF0000-0x0000000060000000-memory.dmp

                                        Filesize

                                        64KB

                                      • memory/2652-181-0x000000002D811000-0x000000002D812000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/2652-183-0x00000000720FD000-0x0000000072108000-memory.dmp

                                        Filesize

                                        44KB

                                      • memory/2652-193-0x000000005FFF0000-0x0000000060000000-memory.dmp

                                        Filesize

                                        64KB

                                      • memory/2652-194-0x00000000720FD000-0x0000000072108000-memory.dmp

                                        Filesize

                                        44KB

                                      • memory/3044-179-0x000007FEF28E0000-0x000007FEF398B000-memory.dmp

                                        Filesize

                                        16.7MB

                                      • memory/3044-180-0x000007FEF1B80000-0x000007FEF1C92000-memory.dmp

                                        Filesize

                                        1.1MB

                                      • memory/3044-178-0x000007FEF3990000-0x000007FEF3C44000-memory.dmp

                                        Filesize

                                        2.7MB

                                      • memory/3044-177-0x000007FEF4610000-0x000007FEF4644000-memory.dmp

                                        Filesize

                                        208KB

                                      • memory/3044-176-0x000000013FD60000-0x000000013FE58000-memory.dmp

                                        Filesize

                                        992KB