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Analysis

  • max time kernel
    299s
  • max time network
    304s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19-05-2021 13:58

General

  • Target

    keygen-step-4d.exe

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Browser
    1⤵
      PID:2804
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s WpnService
      1⤵
        PID:2660
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
        1⤵
          PID:2636
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
          1⤵
            PID:2484
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2472
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1820
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s SENS
                1⤵
                  PID:1416
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                  1⤵
                    PID:1300
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s Themes
                    1⤵
                      PID:1220
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1084
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:356
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                          1⤵
                            PID:352
                          • C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe
                            "C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe"
                            1⤵
                            • Suspicious use of WriteProcessMemory
                            PID:848
                            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
                              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
                              2⤵
                              • Executes dropped EXE
                              • Drops file in Program Files directory
                              • Suspicious use of SetWindowsHookEx
                              • Suspicious use of WriteProcessMemory
                              PID:4076
                              • C:\Windows\SysWOW64\rundll32.exe
                                "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                                3⤵
                                • Loads dropped DLL
                                • Modifies registry class
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                • Suspicious use of WriteProcessMemory
                                PID:916
                            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
                              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
                              2⤵
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              PID:3396
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 3396 -s 1340
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2228
                            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe
                              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                              2⤵
                              • Executes dropped EXE
                              • Suspicious use of WriteProcessMemory
                              PID:1760
                              • C:\Users\Admin\AppData\Local\Temp\is-R6GBR.tmp\Install.tmp
                                "C:\Users\Admin\AppData\Local\Temp\is-R6GBR.tmp\Install.tmp" /SL5="$201EA,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                                3⤵
                                • Executes dropped EXE
                                • Loads dropped DLL
                                PID:3916
                            • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe
                              "C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe"
                              2⤵
                              • Executes dropped EXE
                              PID:548
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -u -p 548 -s 1368
                                3⤵
                                • Drops file in Windows directory
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2156
                          • \??\c:\windows\system32\svchost.exe
                            c:\windows\system32\svchost.exe -k netsvcs -s BITS
                            1⤵
                            • Suspicious use of SetThreadContext
                            • Modifies registry class
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:1368
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:1568

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • C:\Program Files\install.dat

                            MD5

                            806c3221a013fec9530762750556c332

                            SHA1

                            36475bcfd0a18555d7c0413d007bbe80f7d321b5

                            SHA256

                            9bcecc5fb84d21db673c81a7ed1d10b28686b8261f79136f748ab7bbad7752f7

                            SHA512

                            56bbaafe7b0883f4e5dcff00ae69339a3b81ac8ba90b304aeab3e4e7e7523b568fd9b269241fc38a39f74894084f1f252a91c22b79cc0a16f9e135859a13145e

                          • C:\Program Files\install.dll

                            MD5

                            fe60ddbeab6e50c4f490ddf56b52057c

                            SHA1

                            6a71fdf73761a1192fd9c6961f66754a63d6db17

                            SHA256

                            9fcfa73600ff1b588015ffa20779cec6714e48ee6ae15db8766f7ffd5ee3031d

                            SHA512

                            0113b47ba1a33a2f597a26c9b66435483373cde4edb183e0e92abef8ed003743f426ba5ffe25a5807c030cc14d8a95d73aa6af95a85f44a86dd40264ecb96536

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe

                            MD5

                            41a5f4fd1ea7cac4aa94a87aebccfef0

                            SHA1

                            0d0abf079413a4c773754bf4fda338dc5b9a8ddc

                            SHA256

                            97e95e99fd499ec45a7c1d8683d5731ce5e7a8fb8b710622e578cd169a00d8d9

                            SHA512

                            5ca14bda498f26efff4e1179969b8f2c25244063c7bf25f3ec20b5cd24b5be320bbfb8b3d0b2d66f5c5b415da777a766fece5f251a4247773c6cb991417fb75f

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe

                            MD5

                            41a5f4fd1ea7cac4aa94a87aebccfef0

                            SHA1

                            0d0abf079413a4c773754bf4fda338dc5b9a8ddc

                            SHA256

                            97e95e99fd499ec45a7c1d8683d5731ce5e7a8fb8b710622e578cd169a00d8d9

                            SHA512

                            5ca14bda498f26efff4e1179969b8f2c25244063c7bf25f3ec20b5cd24b5be320bbfb8b3d0b2d66f5c5b415da777a766fece5f251a4247773c6cb991417fb75f

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe

                            MD5

                            3b1b318df4d314a35dce9e8fd89e5121

                            SHA1

                            55b0f8d56212a74bda0fc5f8cc0632ef52a4bc71

                            SHA256

                            4df9e7fcd10900ae5def897377f54856b0ddad1798fa22614eba56096940885b

                            SHA512

                            f04faca320d344378dd31bf05556fb3ac02873e46e2140d5858162e739f5c25bc9b32d619587c84c36b768b9193ea5292d63f62bb0b8458b35d65959b52df6b4

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe

                            MD5

                            3b1b318df4d314a35dce9e8fd89e5121

                            SHA1

                            55b0f8d56212a74bda0fc5f8cc0632ef52a4bc71

                            SHA256

                            4df9e7fcd10900ae5def897377f54856b0ddad1798fa22614eba56096940885b

                            SHA512

                            f04faca320d344378dd31bf05556fb3ac02873e46e2140d5858162e739f5c25bc9b32d619587c84c36b768b9193ea5292d63f62bb0b8458b35d65959b52df6b4

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe

                            MD5

                            3bc84c0e8831842f2ae263789217245d

                            SHA1

                            d60b174c7f8372036da1eb0a955200b1bb244387

                            SHA256

                            757e7c2569cc52c9e1639fbca06e957cb40f775d5cb1a8aafa670131b62b0824

                            SHA512

                            f3117a6bd79db1d67dce2c67d539c56c177caed9f0b5b019dfb0034f28cb2e79e248893171c2ad78cbca358c2f5813edb17f0126ab40cfe08f9a6357f233f2e4

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe

                            MD5

                            3bc84c0e8831842f2ae263789217245d

                            SHA1

                            d60b174c7f8372036da1eb0a955200b1bb244387

                            SHA256

                            757e7c2569cc52c9e1639fbca06e957cb40f775d5cb1a8aafa670131b62b0824

                            SHA512

                            f3117a6bd79db1d67dce2c67d539c56c177caed9f0b5b019dfb0034f28cb2e79e248893171c2ad78cbca358c2f5813edb17f0126ab40cfe08f9a6357f233f2e4

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe

                            MD5

                            e72eb3a565d7b5b83c7ff6fad519c6c9

                            SHA1

                            1a2668a26b01828eec1415aa614743abb0a4fb70

                            SHA256

                            8ff1e74643983f7ca9bca70f1bea562e805a86421defde1bd57fc0da3722f599

                            SHA512

                            71ae4db9c307c068f31a4e6471d950d1112d89d5661a4960dffbf6a7343cc313f98cfc35c5a10d38aae68be4b0a3f6a702fd5c28d938ca00094b26d0bcf03da3

                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe

                            MD5

                            e72eb3a565d7b5b83c7ff6fad519c6c9

                            SHA1

                            1a2668a26b01828eec1415aa614743abb0a4fb70

                            SHA256

                            8ff1e74643983f7ca9bca70f1bea562e805a86421defde1bd57fc0da3722f599

                            SHA512

                            71ae4db9c307c068f31a4e6471d950d1112d89d5661a4960dffbf6a7343cc313f98cfc35c5a10d38aae68be4b0a3f6a702fd5c28d938ca00094b26d0bcf03da3

                          • C:\Users\Admin\AppData\Local\Temp\is-R6GBR.tmp\Install.tmp

                            MD5

                            45ca138d0bb665df6e4bef2add68c7bf

                            SHA1

                            12c1a48e3a02f319a3d3ca647d04442d55e09265

                            SHA256

                            3960a0597104fc5bbf82bf6c03564a1eb6a829c560d1f50d0a63b4772fafbe37

                            SHA512

                            cd1a0493c26798eb70b3dabb8a439de7792c4676905cad21c6b3f372213ce9f6b65648245defcd36d4f19285160f41c62e1025e772e6b9f11aa126388ea8364f

                          • \Program Files\install.dll

                            MD5

                            fe60ddbeab6e50c4f490ddf56b52057c

                            SHA1

                            6a71fdf73761a1192fd9c6961f66754a63d6db17

                            SHA256

                            9fcfa73600ff1b588015ffa20779cec6714e48ee6ae15db8766f7ffd5ee3031d

                            SHA512

                            0113b47ba1a33a2f597a26c9b66435483373cde4edb183e0e92abef8ed003743f426ba5ffe25a5807c030cc14d8a95d73aa6af95a85f44a86dd40264ecb96536

                          • \Users\Admin\AppData\Local\Temp\is-KK928.tmp\idp.dll

                            MD5

                            8f995688085bced38ba7795f60a5e1d3

                            SHA1

                            5b1ad67a149c05c50d6e388527af5c8a0af4343a

                            SHA256

                            203d7b61eac96de865ab3b586160e72c78d93ab5532b13d50ef27174126fd006

                            SHA512

                            043d41947ab69fc9297dcb5ad238acc2c35250d1172869945ed1a56894c10f93855f0210cbca41ceee9efb55fd56a35a4ec03c77e252409edc64bfb5fb821c35

                          • memory/352-143-0x0000024CEF4D0000-0x0000024CEF540000-memory.dmp

                            Filesize

                            448KB

                          • memory/352-141-0x0000024CEF410000-0x0000024CEF45B000-memory.dmp

                            Filesize

                            300KB

                          • memory/356-178-0x0000012BA4B40000-0x0000012BA4BB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/548-199-0x0000000000000000-mapping.dmp

                          • memory/548-202-0x0000000000F30000-0x0000000000F3D000-memory.dmp

                            Filesize

                            52KB

                          • memory/916-137-0x0000000004727000-0x0000000004828000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/916-144-0x0000000004980000-0x00000000049DC000-memory.dmp

                            Filesize

                            368KB

                          • memory/916-119-0x0000000000000000-mapping.dmp

                          • memory/1084-161-0x0000021DCF0E0000-0x0000021DCF150000-memory.dmp

                            Filesize

                            448KB

                          • memory/1220-184-0x0000029164880000-0x00000291648F0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1300-186-0x00000273F4360000-0x00000273F43D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1368-154-0x0000020C422B0000-0x0000020C42320000-memory.dmp

                            Filesize

                            448KB

                          • memory/1416-180-0x000002350A940000-0x000002350A9B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1568-162-0x000002B641C00000-0x000002B641C70000-memory.dmp

                            Filesize

                            448KB

                          • memory/1568-133-0x00007FF674BA4060-mapping.dmp

                          • memory/1760-193-0x0000000000400000-0x000000000042B000-memory.dmp

                            Filesize

                            172KB

                          • memory/1760-191-0x0000000000000000-mapping.dmp

                          • memory/1820-182-0x00000214E5F90000-0x00000214E6000000-memory.dmp

                            Filesize

                            448KB

                          • memory/2472-155-0x000001ACA67D0000-0x000001ACA6840000-memory.dmp

                            Filesize

                            448KB

                          • memory/2484-150-0x0000014D89F70000-0x0000014D89FE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2636-188-0x00000196F5200000-0x00000196F5270000-memory.dmp

                            Filesize

                            448KB

                          • memory/2660-190-0x0000025DC2110000-0x0000025DC2180000-memory.dmp

                            Filesize

                            448KB

                          • memory/2804-139-0x000001AC0AD70000-0x000001AC0ADE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3396-145-0x000000001AF80000-0x000000001AF82000-memory.dmp

                            Filesize

                            8KB

                          • memory/3396-130-0x0000000000A70000-0x0000000000A71000-memory.dmp

                            Filesize

                            4KB

                          • memory/3396-129-0x0000000000A50000-0x0000000000A6C000-memory.dmp

                            Filesize

                            112KB

                          • memory/3396-128-0x0000000000A40000-0x0000000000A41000-memory.dmp

                            Filesize

                            4KB

                          • memory/3396-126-0x0000000000340000-0x0000000000341000-memory.dmp

                            Filesize

                            4KB

                          • memory/3396-120-0x0000000000000000-mapping.dmp

                          • memory/3916-196-0x0000000000000000-mapping.dmp

                          • memory/3916-205-0x00000000001E0000-0x00000000001E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/4076-116-0x0000000000000000-mapping.dmp