Analysis

  • max time kernel
    40s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    15-06-2024 21:07

General

  • Target

    Bald.Win_New_Temp_Swoofer.exe

  • Size

    4.6MB

  • MD5

    76761b94d0187562e9acc8feb0d36111

  • SHA1

    40d118971e1c9e1e96264b23772ba0ec5e159a0c

  • SHA256

    d02f513e1673e5012e916fad43e0672ee0ff9cdfbc0733401b9b8fd4bd88d1f3

  • SHA512

    d48731994aae2c6f7b86edf22f843913568ade13e482154b71798c7b37b62e617c0f6960b3c9ba8db5c70d173ff0ef864f9c2467d7db6fb5d617a88a301c1423

  • SSDEEP

    98304:L/hllE2G7C2b9cH1UWzfW4Npy2K176ylIqdF8J8mK98wbRNVGllXLTPhCPzH00pE:LxlCcH1BSBvrltsY9jDqXLVaL7u

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Themida packer 8 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 48 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bald.Win_New_Temp_Swoofer.exe
    "C:\Users\Admin\AppData\Local\Temp\Bald.Win_New_Temp_Swoofer.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:2244
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:2608
    • 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:2740
      • 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,0x7fef5ae9758,0x7fef5ae9768,0x7fef5ae9778
        2⤵
          PID:2564
        • 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=1164 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:2
          2⤵
            PID:1796
          • 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=1452 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:8
            2⤵
              PID:1608
            • 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=1568 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:8
              2⤵
                PID:1948
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --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=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:1
                2⤵
                  PID:1248
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2256 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:1
                  2⤵
                    PID:760
                  • 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=1160 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:2
                    2⤵
                      PID:2728
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --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=1432 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:1
                      2⤵
                        PID:2360
                      • 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=3284 --field-trial-handle=1380,i,1925815316112715590,7408968760912200071,131072 /prefetch:8
                        2⤵
                          PID:2492
                      • 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:2944

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

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                        Downloads

                        • 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\Preferences
                          Filesize

                          5KB

                          MD5

                          22edb5a0434b121207a8af33dfe2793c

                          SHA1

                          34d66e79a0be47e6503cca607bb5ba08e1a121b9

                          SHA256

                          3e21402e5c6df6e5da4945a1d9c257390621589f4474ed8612647a8ac33c492b

                          SHA512

                          e284730f115196c415ef01b2a28bd16107aa43f9b9319571f5e950660ebbac3ab5e083d4609f9c7300e677e99417ce0f89bb955d96dfd49eb6b69ccb3911ecb7

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

                          5KB

                          MD5

                          1218297eed297c9c08f48a3b899c30bf

                          SHA1

                          b14097e8be7fb55ed513ab23d09a21278aee5a24

                          SHA256

                          55f23a93ec6be052987ba6ab4ddca6f0b1b5fbcfabd89e33d74710cfda4e3a99

                          SHA512

                          94206ddd6346deb1fb05e8420950ebb5554cc045c74778f6b44f1cfd9835c3991981e3349665b3ce93456365763547be08f66ea82ca3472310e5193c0d02262e

                        • 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

                        • \??\pipe\crashpad_2740_WMBGQUYSOOSWKMPJ
                          MD5

                          d41d8cd98f00b204e9800998ecf8427e

                          SHA1

                          da39a3ee5e6b4b0d3255bfef95601890afd80709

                          SHA256

                          e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                          SHA512

                          cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                        • memory/2244-2-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-5-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-3-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-9-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-6-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-4-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-1-0x00000000772B0000-0x00000000772B2000-memory.dmp
                          Filesize

                          8KB

                        • memory/2244-7-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB

                        • memory/2244-0-0x000000013FE60000-0x0000000140B5B000-memory.dmp
                          Filesize

                          13.0MB