Analysis

  • max time kernel
    86s
  • max time network
    212s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    13-05-2024 14:50

General

  • Target

    build.exe

  • Size

    1.6MB

  • MD5

    90ef1657375602c233da4ce1a9ca8a6f

  • SHA1

    556b3e441b7a754a70918d5a826b7b570437cc10

  • SHA256

    bfb2d2414f60614e012a7332d4a6606588d8add0e927516d17d45cafe2119338

  • SHA512

    11ba8a5606b818e837415649e94231bc2fedf94a58aa8ae4b8b44b0eef3e23ab8a621894aaa5a2ef76a278724eb9c8a823e2fa27b373b10d99e99c2618c3e77e

  • SSDEEP

    24576:ni2Q9NXw2/wPOjdGxY2rqkqjVnlqud+/2P+A+ZecdyFoBkkAnexMrdgLrd:iTq24GjdGSiqkqXfd+/9AqYanieKd

Score
10/10

Malware Config

Extracted

Family

stealerium

C2

Prueba

Signatures

  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build.exe
    "C:\Users\Admin\AppData\Local\Temp\build.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpAD09.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2856
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:2784
        • C:\Windows\SysWOW64\taskkill.exe
          TaskKill /F /IM 2804
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:528
        • C:\Windows\SysWOW64\timeout.exe
          Timeout /T 2 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:1660
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:2184
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /4
        1⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1960
      • 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:764
        • 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,0x7fef59f9758,0x7fef59f9768,0x7fef59f9778
          2⤵
            PID:884
          • 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=1160 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:2
            2⤵
              PID:2720
            • 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=1572 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
              2⤵
                PID:2256
              • 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=1644 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
                2⤵
                  PID:2648
                • 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=2372 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                  2⤵
                    PID:920
                  • 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=2392 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                    2⤵
                      PID:1548
                    • 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=1176 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:2
                      2⤵
                        PID:2052
                      • 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=1440 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                        2⤵
                          PID:2540
                        • 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=3472 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
                          2⤵
                            PID:2692
                          • 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=3488 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
                            2⤵
                              PID:2336
                            • C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe
                              "C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe" --reenable-autoupdates --system-level
                              2⤵
                                PID:324
                                • C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe
                                  "C:\Program Files\Google\Chrome\Application\106.0.5249.119\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\Crashpad --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0x154,0x158,0x15c,0x128,0x160,0x13fc37688,0x13fc37698,0x13fc376a8
                                  3⤵
                                    PID:680
                                • 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=3912 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
                                  2⤵
                                    PID:2804
                                  • 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=12 --mojo-platform-channel-handle=3904 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                                    2⤵
                                      PID:2288
                                    • 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=13 --mojo-platform-channel-handle=2788 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                                      2⤵
                                        PID:2264
                                      • 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=14 --mojo-platform-channel-handle=2188 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                                        2⤵
                                          PID:2244
                                        • 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=2652 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
                                          2⤵
                                            PID:1492
                                          • 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=3784 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:8
                                            2⤵
                                              PID:1608
                                            • 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=17 --mojo-platform-channel-handle=3020 --field-trial-handle=1420,i,251652449831024165,7141917578396784896,131072 /prefetch:1
                                              2⤵
                                                PID:2484
                                            • 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:2112

                                              Network

                                              MITRE ATT&CK Matrix ATT&CK v13

                                              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\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
                                                Filesize

                                                68KB

                                                MD5

                                                29f65ba8e88c063813cc50a4ea544e93

                                                SHA1

                                                05a7040d5c127e68c25d81cc51271ffb8bef3568

                                                SHA256

                                                1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

                                                SHA512

                                                e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

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

                                                2KB

                                                MD5

                                                0804b4884bbc46119a0b9f3cd3da0569

                                                SHA1

                                                a26420e12e780d3e4006af4c9a02fa50b32d398c

                                                SHA256

                                                65b152318bbe27c7a6953cd12b802f5a93cd870b17458ea153c5be3f3c3f0941

                                                SHA512

                                                653892620548623e0a55d8304575df7fc5839f5b33f7648b150a4cff67d151a52830d343ab059f921f9873329cf8362153dc907d4b6be98e920a00bdec18631e

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

                                                361B

                                                MD5

                                                f25e5065f50668bd38dd605abdccee2e

                                                SHA1

                                                45c380e6485fd0a6f5a33d177b993d0c2a953d66

                                                SHA256

                                                258e95657d3b62c49bfa342d20d65033a2e69082298e4970502408ce3eb9ca66

                                                SHA512

                                                8966784c59da7bb3730ebfa1a565ccb22eaa757ca2825f1ffddcad751f15025361f7832bd4ac92b82c6c707c804be951a5b2c9cb1a04dbadb12d3391c9e7520f

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

                                                361B

                                                MD5

                                                8477790d74cedaa8c53659d6e5d522f9

                                                SHA1

                                                c45786231e0fa505de936dfaaf5ee56085ca3a7e

                                                SHA256

                                                1eb0d902ecb9d50f113831a885f203846fb213cee905fb245a3c87cb2d4857e8

                                                SHA512

                                                cd405a829cabb4638636738523b11b49c12efe19d64e28a96ef98b06a5b56cee61817a4188c077aaa085b2251a3850b6b3421ea5326740bd4ba4c8fe1f26ce3b

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

                                                5KB

                                                MD5

                                                829ff3b367651a0193008874d0804f62

                                                SHA1

                                                02aeef76408e9f9d566a7bfca626c5c42d5f6cd8

                                                SHA256

                                                6a5c591851907dde05dabbc617761fc14a46d60908811cb8ac360bd15bc3382f

                                                SHA512

                                                7b1ef8e77688f9202e4ca29f0d0b848029f1d6b1588c30de10a524f11df1520a85e022dd8525928647dd10faf25334beaf6f24691a39d1e2fef9df33427641af

                                              • 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\db667255-c3eb-446d-a4aa-6392aa66c7d3.tmp
                                                Filesize

                                                5KB

                                                MD5

                                                c40e25b8a3dc904e1e365c477285b9b2

                                                SHA1

                                                c1319b6012427fe2041522d758f45350379a9f44

                                                SHA256

                                                d1bafd886289e243d1acef736849058d837acd22189dc50c2f45b53a1c4997c9

                                                SHA512

                                                18db1ff57ff99af45958f7a3b5ad7090aa665728a4d8dd09d1f4a30512252f81087d24a8a43268b5e19760ded160b03a16db07dd2bbbc85437bc808ce1821d94

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

                                                267KB

                                                MD5

                                                f4ed2798e2adb163ebdc35a8bc625506

                                                SHA1

                                                58933d7a7a6b9b88a6c76ec43670a05a59630790

                                                SHA256

                                                030b252cee7e6c2aa4214f4162c167b7ede0be2aca00560dc87868aea3cd209c

                                                SHA512

                                                f20e3d8299ea082478f0517cae9e156bc8fe9354a206142c9ef69600c6be04e8ee961cdedd2741f2f9a6510da0ba338ba845029a4843b765ceba4311331086d8

                                              • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1
                                                Filesize

                                                264KB

                                                MD5

                                                f50f89a0a91564d0b8a211f8921aa7de

                                                SHA1

                                                112403a17dd69d5b9018b8cede023cb3b54eab7d

                                                SHA256

                                                b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                                                SHA512

                                                bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                                              • C:\Users\Admin\AppData\Local\Temp\TarAB73.tmp
                                                Filesize

                                                177KB

                                                MD5

                                                435a9ac180383f9fa094131b173a2f7b

                                                SHA1

                                                76944ea657a9db94f9a4bef38f88c46ed4166983

                                                SHA256

                                                67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

                                                SHA512

                                                1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

                                              • C:\Users\Admin\AppData\Local\Temp\tmpAD09.tmp.bat
                                                Filesize

                                                57B

                                                MD5

                                                91bcce537d493b918abde30773f3aa97

                                                SHA1

                                                a2118f6df28225ed1a79be080b5b0a5fe9b4c9e3

                                                SHA256

                                                fd6e59d8722d42c30920b38e6395d68543375690695417282da8c1707b01347b

                                                SHA512

                                                aa217618edaaeacf544c446a8679c5ea8e44532bd05643b6ca94bd50d6491dd66959719e33f02c30908b05a582b0279125ea8681bf20b23b3b80751955d7893e

                                              • \??\pipe\crashpad_764_XTBQAYRGCFNLVLBJ
                                                MD5

                                                d41d8cd98f00b204e9800998ecf8427e

                                                SHA1

                                                da39a3ee5e6b4b0d3255bfef95601890afd80709

                                                SHA256

                                                e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                                SHA512

                                                cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                              • memory/1960-50-0x0000000140000000-0x00000001405E8000-memory.dmp
                                                Filesize

                                                5.9MB

                                              • memory/1960-51-0x0000000140000000-0x00000001405E8000-memory.dmp
                                                Filesize

                                                5.9MB

                                              • memory/2804-0-0x000000007428E000-0x000000007428F000-memory.dmp
                                                Filesize

                                                4KB

                                              • memory/2804-49-0x0000000074280000-0x000000007496E000-memory.dmp
                                                Filesize

                                                6.9MB

                                              • memory/2804-7-0x0000000000670000-0x0000000000678000-memory.dmp
                                                Filesize

                                                32KB

                                              • memory/2804-6-0x00000000005C0000-0x00000000005E6000-memory.dmp
                                                Filesize

                                                152KB

                                              • memory/2804-5-0x0000000004870000-0x0000000004902000-memory.dmp
                                                Filesize

                                                584KB

                                              • memory/2804-2-0x0000000074280000-0x000000007496E000-memory.dmp
                                                Filesize

                                                6.9MB

                                              • memory/2804-1-0x0000000000BF0000-0x0000000000D86000-memory.dmp
                                                Filesize

                                                1.6MB