Analysis

  • max time kernel
    57s
  • max time network
    106s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    17-07-2023 16:45

General

  • Target

    TeamViewer_Setup.exe

  • Size

    167KB

  • MD5

    e9b22671e6d12b6e916ba894ac226db6

  • SHA1

    81b6798f8f3168d65a114906dc0613bbedb0a51f

  • SHA256

    3ba0993bd95aa81f72ad13fa9cfb2304f715bebe4a486b688d6b1252e8f67d44

  • SHA512

    7d29251d77cbe813d0d414377e8d09438e3d457b12ed9d03898f7fa5c1a3538ff4407bb962ff033a665244b182c828126c62f5f1917155ce81001f9835208b42

  • SSDEEP

    3072:vJZKnPE2YyJzELtyTFyYeY8lNgoiJ+sX8HFvytbCNIR6kqOJTMMz+:vJZKBI0FyYeY4eoiJ+sCFvRSHbz+

Malware Config

Signatures

  • VanillaRat

    VanillaRat is an advanced remote administration tool coded in C#.

  • Vanilla Rat payload 10 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 55 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 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\TeamViewer_Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\TeamViewer_Setup.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1616
    • C:\Windows\SysWOW64\dllhоst.exe
      "C:\Windows\System32\dllhоst.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2576
      • C:\Windows\SysWOW64\reg.exe
        reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Windows\SysWOW64\dllhоst.exe /f
        3⤵
        • Adds Run key to start application
        • Modifies registry key
        PID:2552
      • C:\Windows\SysWOW64\сsrss.exe
        "C:\Windows\SysWOW64\сsrss.exe"
        3⤵
        • Executes dropped EXE
        PID:2096
  • 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:2880
    • 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,0x7fef6f69758,0x7fef6f69768,0x7fef6f69778
      2⤵
        PID:2828
      • 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=1132 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:2
        2⤵
          PID:2924
        • 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=1512 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
          2⤵
            PID:1088
          • 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=1588 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
            2⤵
              PID:1956
            • 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=2248 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:1
              2⤵
                PID:1388
              • 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=2240 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:1
                2⤵
                  PID:1816
                • 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=1328 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:2
                  2⤵
                    PID:1084
                  • 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=1372 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:1
                    2⤵
                      PID:1644
                    • 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=3424 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
                      2⤵
                        PID:1204
                      • 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=3548 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
                        2⤵
                          PID:2052
                        • 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=3584 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
                          2⤵
                            PID:1928
                          • 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=3444 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
                            2⤵
                              PID:2044
                            • 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=4020 --field-trial-handle=1296,i,9724600648432707195,12262456619706013434,131072 /prefetch:8
                              2⤵
                                PID:2984
                            • 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:2332

                              Network

                              MITRE ATT&CK Matrix ATT&CK v6

                              Persistence

                              Registry Run Keys / Startup Folder

                              1
                              T1060

                              Defense Evasion

                              Modify Registry

                              2
                              T1112

                              Discovery

                              System Information Discovery

                              2
                              T1082

                              Query Registry

                              1
                              T1012

                              Command and Control

                              Web Service

                              1
                              T1102

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\90b85e50-8767-46c3-8493-e7a568d90c16.tmp
                                Filesize

                                176KB

                                MD5

                                a6c2cf7349a6b3ff0263af9d597916a4

                                SHA1

                                cb786254b3474b40a751a69b2a3d35d5259ea73b

                                SHA256

                                c5e57e22787987ec8bb721a1e95dbe2177883e7e1f6665703e46b2dfa48db166

                                SHA512

                                7d7d208f022f3385c1dd2cb3ee63feb4bc62ed1ab3aa0a886fb6e714e96247846d966f07ea6015e7b84d5ecfa0df990511cc146cdedf3b5c3b937bed88405af4

                              • 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

                                4KB

                                MD5

                                b225b9c11183b16368fd90309ab07e79

                                SHA1

                                86575fbece9b5ff748b83e0a0dd9fb7873502797

                                SHA256

                                a715122ecd2943218fc8443a4146ce775add1c0ce5db45f0dbe0563a6349af8b

                                SHA512

                                9c6e11636a1fcfd8addf9c289eecfc99a9a9ae0329f3fa7424280739d74aef5b940404071e3457bf77be8df2b914c8ce37c40da53c2fcd76df3199d612725f60

                              • 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\Local State
                                Filesize

                                176KB

                                MD5

                                5ecc32dd49b9b11df3aa6d679cf16fec

                                SHA1

                                b41e0ed6b215e59d387e722e88a56766693cd74f

                                SHA256

                                9037381c0a658593f7b759bd919abc13f311d684a35241a32dc2edda28da20e8

                                SHA512

                                484257efcd4a37101bcbdff0c536bca18d1108601106430221a89019803ab742bb68635f5e99edb6ae5eeab0688050f004e088f97fa96cb547bfcfb82229f619

                              • C:\Windows\SysWOW64\dllhоst.exe
                                Filesize

                                130KB

                                MD5

                                d422f36032337b8996926d750b38fb15

                                SHA1

                                3c469472c5eadd2af6d93d9498e62934149f104d

                                SHA256

                                9c7708aa2255ef6df7faa3eb2821687272ce7e02449419c2fcd5bcde69825a6e

                                SHA512

                                2ba5c12cdc456e437da314759f3d3385179d313ae1118edb3692e2e32759ab3be789b2e086c087ef0ac07c488d860495c99935aed32247b234e5e77f088f3e45

                              • C:\Windows\SysWOW64\dllhоst.exe
                                Filesize

                                130KB

                                MD5

                                d422f36032337b8996926d750b38fb15

                                SHA1

                                3c469472c5eadd2af6d93d9498e62934149f104d

                                SHA256

                                9c7708aa2255ef6df7faa3eb2821687272ce7e02449419c2fcd5bcde69825a6e

                                SHA512

                                2ba5c12cdc456e437da314759f3d3385179d313ae1118edb3692e2e32759ab3be789b2e086c087ef0ac07c488d860495c99935aed32247b234e5e77f088f3e45

                              • C:\Windows\SysWOW64\сsrss.exe
                                Filesize

                                115KB

                                MD5

                                46876588de250f948d185a55b87c7c19

                                SHA1

                                2d098bcc85ff38027797f8a89116dad249afe67d

                                SHA256

                                0206f4977c8992745fcfc19723a473c3a5ed9b92b990271dcfe4edce4e64ebc2

                                SHA512

                                83af7f7a4e7629049fd41185e23d0c4cfba47db7300e4629cc7578dcfb1a403315c7e82b30dded4350e4c38abb942b08e17a1cc3557a2cf0f9ad8e0541e7f943

                              • C:\Windows\SysWOW64\сsrss.exe
                                Filesize

                                115KB

                                MD5

                                46876588de250f948d185a55b87c7c19

                                SHA1

                                2d098bcc85ff38027797f8a89116dad249afe67d

                                SHA256

                                0206f4977c8992745fcfc19723a473c3a5ed9b92b990271dcfe4edce4e64ebc2

                                SHA512

                                83af7f7a4e7629049fd41185e23d0c4cfba47db7300e4629cc7578dcfb1a403315c7e82b30dded4350e4c38abb942b08e17a1cc3557a2cf0f9ad8e0541e7f943

                              • \??\pipe\crashpad_2880_NZLVSTOYVFBONIIJ
                                MD5

                                d41d8cd98f00b204e9800998ecf8427e

                                SHA1

                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                SHA256

                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                SHA512

                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                              • \Windows\SysWOW64\dllhоst.exe
                                Filesize

                                130KB

                                MD5

                                d422f36032337b8996926d750b38fb15

                                SHA1

                                3c469472c5eadd2af6d93d9498e62934149f104d

                                SHA256

                                9c7708aa2255ef6df7faa3eb2821687272ce7e02449419c2fcd5bcde69825a6e

                                SHA512

                                2ba5c12cdc456e437da314759f3d3385179d313ae1118edb3692e2e32759ab3be789b2e086c087ef0ac07c488d860495c99935aed32247b234e5e77f088f3e45

                              • \Windows\SysWOW64\сsrss.exe
                                Filesize

                                115KB

                                MD5

                                46876588de250f948d185a55b87c7c19

                                SHA1

                                2d098bcc85ff38027797f8a89116dad249afe67d

                                SHA256

                                0206f4977c8992745fcfc19723a473c3a5ed9b92b990271dcfe4edce4e64ebc2

                                SHA512

                                83af7f7a4e7629049fd41185e23d0c4cfba47db7300e4629cc7578dcfb1a403315c7e82b30dded4350e4c38abb942b08e17a1cc3557a2cf0f9ad8e0541e7f943

                              • memory/1616-54-0x0000000000CA0000-0x0000000000CD2000-memory.dmp
                                Filesize

                                200KB

                              • memory/1616-65-0x0000000074800000-0x0000000074EEE000-memory.dmp
                                Filesize

                                6.9MB

                              • memory/1616-55-0x0000000074800000-0x0000000074EEE000-memory.dmp
                                Filesize

                                6.9MB

                              • memory/2096-75-0x0000000074800000-0x0000000074EEE000-memory.dmp
                                Filesize

                                6.9MB

                              • memory/2096-79-0x0000000074800000-0x0000000074EEE000-memory.dmp
                                Filesize

                                6.9MB

                              • memory/2096-80-0x0000000000A20000-0x0000000000A60000-memory.dmp
                                Filesize

                                256KB

                              • memory/2096-76-0x0000000000A20000-0x0000000000A60000-memory.dmp
                                Filesize

                                256KB

                              • memory/2096-74-0x00000000002B0000-0x00000000002D2000-memory.dmp
                                Filesize

                                136KB

                              • memory/2576-78-0x0000000004D60000-0x0000000004DA0000-memory.dmp
                                Filesize

                                256KB

                              • memory/2576-77-0x0000000074800000-0x0000000074EEE000-memory.dmp
                                Filesize

                                6.9MB

                              • memory/2576-66-0x0000000004D60000-0x0000000004DA0000-memory.dmp
                                Filesize

                                256KB

                              • memory/2576-64-0x0000000074800000-0x0000000074EEE000-memory.dmp
                                Filesize

                                6.9MB

                              • memory/2576-63-0x0000000000150000-0x0000000000178000-memory.dmp
                                Filesize

                                160KB