Analysis

  • max time kernel
    1800s
  • max time network
    1747s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    09/07/2024, 10:39

General

  • Target

    Chair_Loader (1).exe

  • Size

    7.6MB

  • MD5

    5d7dd4c3d90cf55ca75e3399155f2096

  • SHA1

    78918993a6106ba95a90c65aa0a62e40fae49a1f

  • SHA256

    99dbb833a265e54e72603300eb65877ab98f9c8032ccf712493905623131ba5e

  • SHA512

    b586a7c88dffeb5dc667900cf0000abaf66020e08966bd2ad8ad1731854dc527966dcaa8e995955d698cdc0aa638ae9300f4d5ac424374fb478ed3579ad9afd8

  • SSDEEP

    98304:TzDjWM8JEClk1r3amaHl3Ne4i3Tf2PkOpfW9hZMMoVmkzhxIdfFSpXq7eRaYKJJN:Tz05eNTfm/pf+xk4dNSESRatrbWOjgKZ

Score
7/10
upx

Malware Config

Signatures

  • Loads dropped DLL 7 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 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\Chair_Loader (1).exe
    "C:\Users\Admin\AppData\Local\Temp\Chair_Loader (1).exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2296
    • C:\Users\Admin\AppData\Local\Temp\Chair_Loader (1).exe
      "C:\Users\Admin\AppData\Local\Temp\Chair_Loader (1).exe"
      2⤵
      • Loads dropped DLL
      PID:2664
  • 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:2144
    • 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,0x7fef7af9758,0x7fef7af9768,0x7fef7af9778
      2⤵
        PID:1664
      • 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=1188 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:2
        2⤵
          PID:3004
        • 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=1540 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:8
          2⤵
            PID:2908
          • 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=1632 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:8
            2⤵
              PID:2660
            • 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=2236 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:1
              2⤵
                PID:1960
              • 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=2244 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:1
                2⤵
                  PID:2616
                • 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=1128 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:2
                  2⤵
                    PID:1040
                  • 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=1180 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:1
                    2⤵
                      PID:1508
                    • 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=3652 --field-trial-handle=1396,i,12134777668662059051,3265436025245285878,131072 /prefetch:8
                      2⤵
                        PID:592
                    • 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:1916

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      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\Network\Network Persistent State

                        Filesize

                        1KB

                        MD5

                        fc4e2aa3c363647b81dcd526b00785d4

                        SHA1

                        7d8b9a2757e519f1f86d50062be43f8584a12955

                        SHA256

                        a98104ce502dfac12929d5ef9fe18a309f0d8008527fff30c1c32e866f9bba43

                        SHA512

                        b62f9272eb04521cbec00a097677808a2aeb86d2288d37635499ccb85b6d51f2a4ea3b05cdd59ec34b31a345a6d1377110e90982bc1bd8beecedc79722371f3d

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

                        Filesize

                        987B

                        MD5

                        54ed7818cfd00bf6666406e3cf14a21d

                        SHA1

                        4e76396b8b54f53dd0a3b880f5be25956d5db372

                        SHA256

                        baffa60da7648d6603a9ed7caa7495f9bf800494a1b81a65575f522116764fea

                        SHA512

                        0b7b360c815292a65db8afce54f6673d33a62336a1869b09ec442645a50883bc01e16cb87e2806e35f5371af2eb6bd65e9d24979bf7342f8ebe53dacbe6ad2d7

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

                        Filesize

                        4KB

                        MD5

                        a6659b4829345c89feb481cbb6e67f28

                        SHA1

                        2a4007996c885cbd1b2e8ce6dd2ecb55f4bda554

                        SHA256

                        fbde9afd70318b2ecdac08bf506ecdb2aac89d9f5e4e0eba2ea3438e6c1343c7

                        SHA512

                        dca17b795a185533f56e886f40acb5b3c618e1bd904c0bd068e764552db31cd88a77ee750caf27c49f1b887937b5995a65a7cad03bd204d20d96eb439cddf150

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

                        Filesize

                        4KB

                        MD5

                        b4b3ab1e15e499f4e2868a84d44eeee7

                        SHA1

                        eed00c140a9c0f5f19f0a0f8d4ea1445026a578d

                        SHA256

                        73c1a848bbd907beeac326eae70e3c3a91f33a66e6098584fc25fbcfc8367efa

                        SHA512

                        4468207590b5effa23cac4e865749dec75f2f561864af5ad0954df726508ac9a882b4642540301c8acc0377f868fc63f1f9f83614b5b730eab2689673922e909

                      • 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\_MEI22962\api-ms-win-core-file-l1-2-0.dll

                        Filesize

                        21KB

                        MD5

                        1c58526d681efe507deb8f1935c75487

                        SHA1

                        0e6d328faf3563f2aae029bc5f2272fb7a742672

                        SHA256

                        ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2

                        SHA512

                        8edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1

                      • C:\Users\Admin\AppData\Local\Temp\_MEI22962\api-ms-win-core-file-l2-1-0.dll

                        Filesize

                        18KB

                        MD5

                        bfffa7117fd9b1622c66d949bac3f1d7

                        SHA1

                        402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

                        SHA256

                        1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

                        SHA512

                        b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

                      • C:\Users\Admin\AppData\Local\Temp\_MEI22962\api-ms-win-core-localization-l1-2-0.dll

                        Filesize

                        21KB

                        MD5

                        724223109e49cb01d61d63a8be926b8f

                        SHA1

                        072a4d01e01dbbab7281d9bd3add76f9a3c8b23b

                        SHA256

                        4e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210

                        SHA512

                        19b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c

                      • C:\Users\Admin\AppData\Local\Temp\_MEI22962\api-ms-win-core-processthreads-l1-1-1.dll

                        Filesize

                        21KB

                        MD5

                        517eb9e2cb671ae49f99173d7f7ce43f

                        SHA1

                        4ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab

                        SHA256

                        57cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54

                        SHA512

                        492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be

                      • C:\Users\Admin\AppData\Local\Temp\_MEI22962\api-ms-win-core-timezone-l1-1-0.dll

                        Filesize

                        21KB

                        MD5

                        d12403ee11359259ba2b0706e5e5111c

                        SHA1

                        03cc7827a30fd1dee38665c0cc993b4b533ac138

                        SHA256

                        f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781

                        SHA512

                        9004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0

                      • C:\Users\Admin\AppData\Local\Temp\_MEI22962\python311.dll

                        Filesize

                        1.6MB

                        MD5

                        bb46b85029b543b70276ad8e4c238799

                        SHA1

                        123bdcd9eebcac1ec0fd2764a37e5e5476bb0c1c

                        SHA256

                        72c24e1db1ba4df791720a93ca9502d77c3738eebf8b9092a5d82aa8d80121d0

                        SHA512

                        5e993617509c1cf434938d6a467eb0494e04580ad242535a04937f7c174d429da70a6e71792fc3de69e103ffc5d9de51d29001a4df528cfffefdaa2cef4eaf31

                      • C:\Users\Admin\AppData\Local\Temp\_MEI22962\ucrtbase.dll

                        Filesize

                        992KB

                        MD5

                        0e0bac3d1dcc1833eae4e3e4cf83c4ef

                        SHA1

                        4189f4459c54e69c6d3155a82524bda7549a75a6

                        SHA256

                        8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

                        SHA512

                        a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

                      • memory/2664-74-0x000007FEF5C70000-0x000007FEF6258000-memory.dmp

                        Filesize

                        5.9MB