Resubmissions

08-02-2024 14:09

240208-rggrdafg97 8

08-02-2024 14:06

240208-rehkwsfg86 8

Analysis

  • max time kernel
    72s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    08-02-2024 14:06

General

  • Target

    build3.exe

  • Size

    299KB

  • MD5

    41b883a061c95e9b9cb17d4ca50de770

  • SHA1

    1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

  • SHA256

    fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

  • SHA512

    cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

  • SSDEEP

    6144:2neDcgRQv5VaNT9DW7a6dtM9VstSttuvqIT:2O0v5VuT9DW7hdt9tKt2qI

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build3.exe
    "C:\Users\Admin\AppData\Local\Temp\build3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3036
    • C:\Users\Admin\AppData\Local\Temp\build3.exe
      "C:\Users\Admin\AppData\Local\Temp\build3.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:752
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
        3⤵
        • Creates scheduled task(s)
        PID:756
  • 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:1816
    • 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,0x7fef6d59758,0x7fef6d59768,0x7fef6d59778
      2⤵
        PID:1876
      • 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=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:2
        2⤵
          PID:2460
        • 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=1468 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
          2⤵
            PID:2684
          • 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=1556 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
            2⤵
              PID:2436
            • 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=2280 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:1
              2⤵
                PID:2600
              • 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=2288 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:1
                2⤵
                  PID:2972
                • 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=1532 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:2
                  2⤵
                    PID:1916
                  • 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=1312 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:1
                    2⤵
                      PID:596
                    • 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=3600 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                      2⤵
                        PID:828
                      • 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=10 --mojo-platform-channel-handle=1844 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:1
                        2⤵
                          PID:2316
                        • 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=580 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                          2⤵
                            PID:1964
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=3992 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                            2⤵
                              PID:1584
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=3984 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                              2⤵
                                PID:2708
                              • 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=3632 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                                2⤵
                                  PID:2280
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=4040 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                                  2⤵
                                    PID:1140
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=4024 --field-trial-handle=1284,i,2891639313493676653,4840808378444276645,131072 /prefetch:8
                                    2⤵
                                      PID:408
                                  • 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:2812
                                    • C:\Windows\system32\taskeng.exe
                                      taskeng.exe {939554EE-4CEA-488F-9DEE-280FCD8D5879} S-1-5-21-3470981204-343661084-3367201002-1000:GLTGRJAG\Admin:Interactive:[1]
                                      1⤵
                                        PID:2028
                                        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                          2⤵
                                          • Executes dropped EXE
                                          • Suspicious use of SetThreadContext
                                          PID:2904
                                          • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                            C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                            3⤵
                                            • Executes dropped EXE
                                            PID:1744
                                            • C:\Windows\SysWOW64\schtasks.exe
                                              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
                                              4⤵
                                              • Creates scheduled task(s)
                                              PID:2192
                                        • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                          C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                          2⤵
                                            PID:1180
                                            • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                              C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                              3⤵
                                                PID:1184
                                            • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                              C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                              2⤵
                                                PID:2044
                                                • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                                  C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
                                                  3⤵
                                                    PID:1812
                                              • C:\Windows\explorer.exe
                                                "C:\Windows\explorer.exe"
                                                1⤵
                                                  PID:888
                                                • C:\Users\Admin\Downloads\build3.exe
                                                  "C:\Users\Admin\Downloads\build3.exe"
                                                  1⤵
                                                    PID:2020
                                                    • C:\Users\Admin\Downloads\build3.exe
                                                      "C:\Users\Admin\Downloads\build3.exe"
                                                      2⤵
                                                        PID:1496
                                                    • C:\Users\Admin\Downloads\build3.exe
                                                      "C:\Users\Admin\Downloads\build3.exe"
                                                      1⤵
                                                        PID:1864
                                                        • C:\Users\Admin\Downloads\build3.exe
                                                          "C:\Users\Admin\Downloads\build3.exe"
                                                          2⤵
                                                            PID:1360
                                                        • C:\Users\Admin\Downloads\build3.exe
                                                          "C:\Users\Admin\Downloads\build3.exe"
                                                          1⤵
                                                            PID:1828
                                                            • C:\Users\Admin\Downloads\build3.exe
                                                              "C:\Users\Admin\Downloads\build3.exe"
                                                              2⤵
                                                                PID:2144

                                                            Network

                                                            MITRE ATT&CK Enterprise v15

                                                            Replay Monitor

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                                                            Downloads

                                                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GCM Store\Encryption\000006.dbtmp

                                                              Filesize

                                                              16B

                                                              MD5

                                                              aefd77f47fb84fae5ea194496b44c67a

                                                              SHA1

                                                              dcfbb6a5b8d05662c4858664f81693bb7f803b82

                                                              SHA256

                                                              4166bf17b2da789b0d0cc5c74203041d98005f5d4ef88c27e8281e00148cd611

                                                              SHA512

                                                              b733d502138821948267a8b27401d7c0751e590e1298fda1428e663ccd02f55d0d2446ff4bc265bdcdc61f952d13c01524a5341bc86afc3c2cde1d8589b2e1c3

                                                            • 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\Network Persistent State

                                                              Filesize

                                                              391B

                                                              MD5

                                                              e55e83b7f977fd9a4e0266b1eca1e1b1

                                                              SHA1

                                                              509e62fcd8c8d795abfcd67c79e11a1ff44498af

                                                              SHA256

                                                              e0cf2971345b0c3c354b762d407ea2c6b6314a0fd5b2bb4331e7d7334efaf3cb

                                                              SHA512

                                                              5d6d5f76c7f4a6fcba65600dd1aa3999ccef0668144ae38ad8ec242bf8f415d37f04137c42ddee4740a8afc0ab7e4558f509ddabd0d7f021d0c7c612f78e70ed

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

                                                              Filesize

                                                              5KB

                                                              MD5

                                                              3650102e93e01f87da3b401a715c1dd0

                                                              SHA1

                                                              42a29871f637453c24b7adcc86ac1115749d1e9d

                                                              SHA256

                                                              f77e6c1df05ce0091bc7a1d95bd126bd499d8486a4dd323659e94da2f767ee84

                                                              SHA512

                                                              acd02be70d16b030ba4d6186325ec6864048da9bf20433e0d1f066e6ddc84c003de606470854faa73c5c2b5e898f232ef79a9db65983877c18f88d3b836a0120

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

                                                              Filesize

                                                              5KB

                                                              MD5

                                                              489c498c771bdb18d83c01c77741fd4c

                                                              SHA1

                                                              c3486c666dc7221cb9589ff95680ec8cea285d69

                                                              SHA256

                                                              7e6c11203b291609f2444388b82b21317ad3e67343187191c6f4c9be6be15eff

                                                              SHA512

                                                              9018c31f4bb1ae674841b690cc7a6b1b5b0e724910cd1e62f6870c44b99fa80286ad6422f9fc48189ff768763ada72f9b4026ec0d44e5f4cb158bbb54a132dcd

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

                                                              Filesize

                                                              5KB

                                                              MD5

                                                              cda7d02dd02f6f567fe0df052f079e9d

                                                              SHA1

                                                              724693558594ecc7def28f8b7b0b94c194936004

                                                              SHA256

                                                              8b2b2b285f2641b406a925d1be6f305c73a4fc8e9a4646fc9569e67393ee9500

                                                              SHA512

                                                              7e80584490bc27d6e4020ac4c48467ac05d24023019b8f32af854abe7c510a70e833558e03f8f774fd1b0129adf81fe9da406d7afb3c3f7129329e9444e7535a

                                                            • 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\Temp\Cab3C95.tmp

                                                              Filesize

                                                              65KB

                                                              MD5

                                                              ac05d27423a85adc1622c714f2cb6184

                                                              SHA1

                                                              b0fe2b1abddb97837ea0195be70ab2ff14d43198

                                                              SHA256

                                                              c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

                                                              SHA512

                                                              6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

                                                            • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

                                                              Filesize

                                                              299KB

                                                              MD5

                                                              41b883a061c95e9b9cb17d4ca50de770

                                                              SHA1

                                                              1daf96ec21d53d9a4699cea9b4db08cda6fbb5ad

                                                              SHA256

                                                              fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408

                                                              SHA512

                                                              cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319

                                                            • \??\pipe\crashpad_1816_VZTQHPLGXGEPFEZL

                                                              MD5

                                                              d41d8cd98f00b204e9800998ecf8427e

                                                              SHA1

                                                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                                                              SHA256

                                                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                                              SHA512

                                                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                                            • memory/752-8-0x0000000000400000-0x0000000000406000-memory.dmp

                                                              Filesize

                                                              24KB

                                                            • memory/752-7-0x0000000000400000-0x0000000000406000-memory.dmp

                                                              Filesize

                                                              24KB

                                                            • memory/752-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

                                                              Filesize

                                                              4KB

                                                            • memory/752-5-0x0000000000400000-0x0000000000406000-memory.dmp

                                                              Filesize

                                                              24KB

                                                            • memory/1180-178-0x0000000000970000-0x0000000000A70000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/1828-223-0x00000000008B0000-0x00000000009B0000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/1864-215-0x00000000009E2000-0x00000000009F2000-memory.dmp

                                                              Filesize

                                                              64KB

                                                            • memory/2020-204-0x00000000008F0000-0x00000000009F0000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/2020-221-0x00000000008F0000-0x00000000009F0000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/2044-243-0x00000000008A0000-0x00000000009A0000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/2904-111-0x0000000000890000-0x0000000000990000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/3036-2-0x0000000000C50000-0x0000000000D50000-memory.dmp

                                                              Filesize

                                                              1024KB

                                                            • memory/3036-4-0x0000000000220000-0x0000000000224000-memory.dmp

                                                              Filesize

                                                              16KB