Resubmissions

08-07-2021 12:18

210708-8z6d5h8z2n 10

06-07-2021 17:53

210706-g6we6sa7sa 10

19-06-2021 18:17

210619-vr8bj2dzfn 10

17-06-2021 21:39

210617-a9cvlnmrbx 10

11-06-2021 17:26

210611-wvab1yw2tj 10

08-06-2021 06:47

210608-qrbpch3y46 10

08-06-2021 06:47

210608-64tndgm1ln 10

05-06-2021 18:40

210605-cd6qpr55sx 10

04-06-2021 11:56

210604-5c416rs3ns 10

04-06-2021 08:52

210604-jy9885jen2 10

Analysis

  • max time kernel
    1796s
  • max time network
    1804s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    28-04-2021 18:03

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 5 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
    1⤵
      PID:352
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s UserManager
      1⤵
        PID:1216
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
        1⤵
          PID:2800
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s WpnService
          1⤵
            PID:2820
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s Browser
            1⤵
              PID:2748
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
              1⤵
                PID:2572
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
                1⤵
                  PID:2536
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
                  1⤵
                  • Modifies registry class
                  PID:1900
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s SENS
                  1⤵
                    PID:1448
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s Themes
                    1⤵
                      PID:1292
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1088
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:296
                        • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
                          "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
                          1⤵
                          • Suspicious use of WriteProcessMemory
                          PID:1032
                          • 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:2972
                            • 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:3548
                          • 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:2392
                          • 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:1732
                            • C:\Users\Admin\AppData\Local\Temp\is-7FKSD.tmp\Install.tmp
                              "C:\Users\Admin\AppData\Local\Temp\is-7FKSD.tmp\Install.tmp" /SL5="$40192,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                              3⤵
                              • Executes dropped EXE
                              • Loads dropped DLL
                              • Suspicious use of WriteProcessMemory
                              PID:644
                              • C:\Users\Admin\AppData\Local\Temp\is-TDTHV.tmp\Ultra.exe
                                "C:\Users\Admin\AppData\Local\Temp\is-TDTHV.tmp\Ultra.exe" /S /UID=burnerch1
                                4⤵
                                • Executes dropped EXE
                                • Suspicious use of WriteProcessMemory
                                PID:3844
                                • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
                                  dw20.exe -x -s 1260
                                  5⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:1872
                        • \??\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:1532
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                            2⤵
                            • Checks processor information in registry
                            • Modifies data under HKEY_USERS
                            • Modifies registry class
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:2116

                        Network

                        MITRE ATT&CK Matrix ATT&CK v6

                        Discovery

                        System Information Discovery

                        2
                        T1082

                        Query Registry

                        1
                        T1012

                        Command and Control

                        Web Service

                        1
                        T1102

                        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\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-7FKSD.tmp\Install.tmp
                          MD5

                          45ca138d0bb665df6e4bef2add68c7bf

                          SHA1

                          12c1a48e3a02f319a3d3ca647d04442d55e09265

                          SHA256

                          3960a0597104fc5bbf82bf6c03564a1eb6a829c560d1f50d0a63b4772fafbe37

                          SHA512

                          cd1a0493c26798eb70b3dabb8a439de7792c4676905cad21c6b3f372213ce9f6b65648245defcd36d4f19285160f41c62e1025e772e6b9f11aa126388ea8364f

                        • C:\Users\Admin\AppData\Local\Temp\is-TDTHV.tmp\Ultra.exe
                          MD5

                          cc2e3f1906f2f7a7318ce8e6f0f00683

                          SHA1

                          ff26f4b8ba148ddd488dde4eadd2412d6c288580

                          SHA256

                          0ed89ff238edaa1b5b084d5c3c7ba6864b59dac5a6fd961a9065e966f55b9cb2

                          SHA512

                          49d86be8794e0161bc2f2db626b9ce0031e9614486605f283c6cd8429fe9d907f3f3851d15cd318df5945ad2acac85da18f042f3692c38b794cc11d27b77a05a

                        • C:\Users\Admin\AppData\Local\Temp\is-TDTHV.tmp\Ultra.exe
                          MD5

                          cc2e3f1906f2f7a7318ce8e6f0f00683

                          SHA1

                          ff26f4b8ba148ddd488dde4eadd2412d6c288580

                          SHA256

                          0ed89ff238edaa1b5b084d5c3c7ba6864b59dac5a6fd961a9065e966f55b9cb2

                          SHA512

                          49d86be8794e0161bc2f2db626b9ce0031e9614486605f283c6cd8429fe9d907f3f3851d15cd318df5945ad2acac85da18f042f3692c38b794cc11d27b77a05a

                        • \Program Files\install.dll
                          MD5

                          fe60ddbeab6e50c4f490ddf56b52057c

                          SHA1

                          6a71fdf73761a1192fd9c6961f66754a63d6db17

                          SHA256

                          9fcfa73600ff1b588015ffa20779cec6714e48ee6ae15db8766f7ffd5ee3031d

                          SHA512

                          0113b47ba1a33a2f597a26c9b66435483373cde4edb183e0e92abef8ed003743f426ba5ffe25a5807c030cc14d8a95d73aa6af95a85f44a86dd40264ecb96536

                        • \Users\Admin\AppData\Local\Temp\is-TDTHV.tmp\idp.dll
                          MD5

                          8f995688085bced38ba7795f60a5e1d3

                          SHA1

                          5b1ad67a149c05c50d6e388527af5c8a0af4343a

                          SHA256

                          203d7b61eac96de865ab3b586160e72c78d93ab5532b13d50ef27174126fd006

                          SHA512

                          043d41947ab69fc9297dcb5ad238acc2c35250d1172869945ed1a56894c10f93855f0210cbca41ceee9efb55fd56a35a4ec03c77e252409edc64bfb5fb821c35

                        • memory/296-233-0x0000028566F40000-0x0000028566FB0000-memory.dmp
                          Filesize

                          448KB

                        • memory/296-188-0x00000285668D0000-0x0000028566940000-memory.dmp
                          Filesize

                          448KB

                        • memory/352-167-0x0000022296760000-0x00000222967D0000-memory.dmp
                          Filesize

                          448KB

                        • memory/352-225-0x00000222967D0000-0x0000022296840000-memory.dmp
                          Filesize

                          448KB

                        • memory/644-196-0x0000000000000000-mapping.dmp
                        • memory/644-199-0x00000000001E0000-0x00000000001E1000-memory.dmp
                          Filesize

                          4KB

                        • memory/1088-185-0x0000012A8AC90000-0x0000012A8AD00000-memory.dmp
                          Filesize

                          448KB

                        • memory/1088-231-0x0000012A8B2B0000-0x0000012A8B320000-memory.dmp
                          Filesize

                          448KB

                        • memory/1216-174-0x000001CC1B480000-0x000001CC1B4F0000-memory.dmp
                          Filesize

                          448KB

                        • memory/1216-241-0x000001CC1BA10000-0x000001CC1BA80000-memory.dmp
                          Filesize

                          448KB

                        • memory/1292-168-0x000001DB90AD0000-0x000001DB90B40000-memory.dmp
                          Filesize

                          448KB

                        • memory/1292-239-0x000001DB90B60000-0x000001DB90BD0000-memory.dmp
                          Filesize

                          448KB

                        • memory/1448-154-0x0000023482C40000-0x0000023482CB0000-memory.dmp
                          Filesize

                          448KB

                        • memory/1448-235-0x00000234832B0000-0x0000023483320000-memory.dmp
                          Filesize

                          448KB

                        • memory/1532-205-0x0000026CA65D0000-0x0000026CA65D4000-memory.dmp
                          Filesize

                          16KB

                        • memory/1532-153-0x0000026CA6960000-0x0000026CA69D0000-memory.dmp
                          Filesize

                          448KB

                        • memory/1532-150-0x0000026CA68A0000-0x0000026CA68EB000-memory.dmp
                          Filesize

                          300KB

                        • memory/1532-206-0x0000026CA6570000-0x0000026CA6571000-memory.dmp
                          Filesize

                          4KB

                        • memory/1532-207-0x0000026CA6570000-0x0000026CA6574000-memory.dmp
                          Filesize

                          16KB

                        • memory/1532-209-0x0000026CA6500000-0x0000026CA6504000-memory.dmp
                          Filesize

                          16KB

                        • memory/1732-193-0x0000000000400000-0x000000000042B000-memory.dmp
                          Filesize

                          172KB

                        • memory/1732-191-0x0000000000000000-mapping.dmp
                        • memory/1872-204-0x0000000000000000-mapping.dmp
                        • memory/1900-161-0x00000236FF230000-0x00000236FF2A0000-memory.dmp
                          Filesize

                          448KB

                        • memory/1900-237-0x00000236FF7B0000-0x00000236FF820000-memory.dmp
                          Filesize

                          448KB

                        • memory/2116-134-0x00007FF65DBE4060-mapping.dmp
                        • memory/2116-162-0x0000023AD17D0000-0x0000023AD1840000-memory.dmp
                          Filesize

                          448KB

                        • memory/2392-140-0x0000000000D00000-0x0000000000D01000-memory.dmp
                          Filesize

                          4KB

                        • memory/2392-126-0x00000000007E0000-0x00000000007E1000-memory.dmp
                          Filesize

                          4KB

                        • memory/2392-190-0x000000001B550000-0x000000001B552000-memory.dmp
                          Filesize

                          8KB

                        • memory/2392-120-0x0000000000000000-mapping.dmp
                        • memory/2392-130-0x0000000000CF0000-0x0000000000CF1000-memory.dmp
                          Filesize

                          4KB

                        • memory/2392-133-0x0000000001010000-0x000000000102C000-memory.dmp
                          Filesize

                          112KB

                        • memory/2536-227-0x00000273A7270000-0x00000273A72E0000-memory.dmp
                          Filesize

                          448KB

                        • memory/2536-173-0x00000273A7010000-0x00000273A7080000-memory.dmp
                          Filesize

                          448KB

                        • memory/2572-229-0x0000018CA9E40000-0x0000018CA9EB0000-memory.dmp
                          Filesize

                          448KB

                        • memory/2572-179-0x0000018CA98A0000-0x0000018CA9910000-memory.dmp
                          Filesize

                          448KB

                        • memory/2748-160-0x000001D431880000-0x000001D4318F0000-memory.dmp
                          Filesize

                          448KB

                        • memory/2748-223-0x000001D431960000-0x000001D4319D0000-memory.dmp
                          Filesize

                          448KB

                        • memory/2800-243-0x00000287E8230000-0x00000287E82A0000-memory.dmp
                          Filesize

                          448KB

                        • memory/2800-180-0x00000287E7EA0000-0x00000287E7F10000-memory.dmp
                          Filesize

                          448KB

                        • memory/2820-245-0x000001BDD4DB0000-0x000001BDD4E20000-memory.dmp
                          Filesize

                          448KB

                        • memory/2820-186-0x000001BDD4D40000-0x000001BDD4DB0000-memory.dmp
                          Filesize

                          448KB

                        • memory/2972-116-0x0000000000000000-mapping.dmp
                        • memory/3548-129-0x0000000004F60000-0x0000000004FBC000-memory.dmp
                          Filesize

                          368KB

                        • memory/3548-128-0x0000000004D14000-0x0000000004E15000-memory.dmp
                          Filesize

                          1.0MB

                        • memory/3548-119-0x0000000000000000-mapping.dmp
                        • memory/3844-203-0x0000000002A50000-0x0000000002A52000-memory.dmp
                          Filesize

                          8KB

                        • memory/3844-200-0x0000000000000000-mapping.dmp