Analysis

  • max time kernel
    154s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    26-01-2022 05:03

General

  • Target

    b83c559b04351fdebcbc5c9c5ff033cd783815bb6bd6ff4e4ffa9f953c49ee5e.exe

  • Size

    333KB

  • MD5

    b35fd6523045221e87128a6c132a75a8

  • SHA1

    993c1672f4ee6cecdb240473cf802e481b9d033d

  • SHA256

    b83c559b04351fdebcbc5c9c5ff033cd783815bb6bd6ff4e4ffa9f953c49ee5e

  • SHA512

    24cc1df4ef99c86d36f148613ff9859c434f0678323ec73ee27c75fb2018546993c4608bc478a90b734dd65389dcbcacc41e8e80e0a49291d073e7381e235916

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://abpa.at/upload/

http://emaratghajari.com/upload/

http://d7qw.cn/upload/

http://alumik-group.ru/upload/

http://zamkikurgan.ru/upload/

https://oakland-studio.video/search.php

https://seattle-university.video/search.php

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Sets service image path in registry 2 TTPs
  • Drops file in Windows directory 1 IoCs
  • Program crash 5 IoCs
  • Checks SCSI registry key(s) 3 TTPs 9 IoCs

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

  • Checks processor information in registry 2 TTPs 15 IoCs

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

  • Enumerates system info in registry 2 TTPs 10 IoCs
  • Modifies Internet Explorer settings 1 TTPs 29 IoCs
  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 59 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k UnistackSvcGroup
    1⤵
      PID:2320
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:2972
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
          PID:2908
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:576
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3236
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:3060
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                1⤵
                  PID:2800
                  • C:\Windows\system32\WerFault.exe
                    C:\Windows\system32\WerFault.exe -u -p 2800 -s 1004
                    2⤵
                    • Program crash
                    • Checks processor information in registry
                    • Enumerates system info in registry
                    PID:1824
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
                  1⤵
                    PID:2612
                  • C:\Windows\system32\taskhostw.exe
                    taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                    1⤵
                      PID:2368
                    • C:\Windows\system32\sihost.exe
                      sihost.exe
                      1⤵
                        PID:2296
                      • C:\Users\Admin\AppData\Local\Temp\b83c559b04351fdebcbc5c9c5ff033cd783815bb6bd6ff4e4ffa9f953c49ee5e.exe
                        "C:\Users\Admin\AppData\Local\Temp\b83c559b04351fdebcbc5c9c5ff033cd783815bb6bd6ff4e4ffa9f953c49ee5e.exe"
                        1⤵
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious behavior: MapViewOfSection
                        PID:2236
                      • C:\Windows\System32\WaaSMedicAgent.exe
                        C:\Windows\System32\WaaSMedicAgent.exe 22a505ca8b43bbbdcd03f331255694a4 1OLgPN8KXEeFI7dsC0Hckw.0.1.0.0.0
                        1⤵
                        • Modifies data under HKEY_USERS
                        PID:2132
                      • C:\Users\Admin\AppData\Local\Temp\672E.exe
                        C:\Users\Admin\AppData\Local\Temp\672E.exe
                        1⤵
                        • Executes dropped EXE
                        • Checks SCSI registry key(s)
                        • Suspicious behavior: MapViewOfSection
                        PID:532
                      • C:\Windows\system32\cmd.exe
                        cmd
                        1⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1888
                        • C:\Windows\System32\Wbem\WMIC.exe
                          wmic /namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /format:csv
                          2⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1872
                        • C:\Windows\System32\Wbem\WMIC.exe
                          wmic /namespace:\\root\SecurityCenter2 Path FirewallProduct Get displayName /format:csv
                          2⤵
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1692
                        • C:\Windows\System32\Wbem\WMIC.exe
                          wmic /namespace:\\root\SecurityCenter2 Path AntiSpywareProduct Get displayName /format:csv
                          2⤵
                            PID:712
                          • C:\Windows\System32\Wbem\WMIC.exe
                            wmic /namespace:\\root\cimv2 Path Win32_Processor Get Name,DeviceID,NumberOfCores /format:csv
                            2⤵
                              PID:3284
                            • C:\Windows\System32\Wbem\WMIC.exe
                              wmic /namespace:\\root\cimv2 Path Win32_Product Get Name,Version /format:csv
                              2⤵
                                PID:2356
                            • C:\Windows\system32\msiexec.exe
                              C:\Windows\system32\msiexec.exe /V
                              1⤵
                                PID:3192
                              • C:\Users\Admin\AppData\Roaming\thfttfc
                                C:\Users\Admin\AppData\Roaming\thfttfc
                                1⤵
                                • Executes dropped EXE
                                • Checks SCSI registry key(s)
                                • Suspicious behavior: MapViewOfSection
                                PID:2552
                              • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
                                "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
                                1⤵
                                  PID:808
                                • C:\Program Files\Internet Explorer\iexplore.exe
                                  "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
                                  1⤵
                                  • Modifies Internet Explorer settings
                                  • Suspicious use of FindShellTrayWindow
                                  • Suspicious use of SetWindowsHookEx
                                  • Suspicious use of WriteProcessMemory
                                  PID:1856
                                  • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                                    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1856 CREDAT:17410 /prefetch:2
                                    2⤵
                                    • Modifies Internet Explorer settings
                                    • Suspicious use of SetWindowsHookEx
                                    PID:3104
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
                                  1⤵
                                    PID:3316
                                  • C:\Windows\SysWOW64\explorer.exe
                                    C:\Windows\SysWOW64\explorer.exe
                                    1⤵
                                      PID:3668
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -u -p 3668 -s 880
                                        2⤵
                                        • Drops file in Windows directory
                                        • Program crash
                                        • Checks processor information in registry
                                        • Enumerates system info in registry
                                        PID:3424
                                    • C:\Windows\explorer.exe
                                      C:\Windows\explorer.exe
                                      1⤵
                                        PID:1368
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3668 -ip 3668
                                        1⤵
                                        • Suspicious use of NtCreateProcessExOtherParentProcess
                                        • Suspicious use of WriteProcessMemory
                                        PID:3412
                                      • C:\Windows\SysWOW64\explorer.exe
                                        C:\Windows\SysWOW64\explorer.exe
                                        1⤵
                                        • Suspicious behavior: MapViewOfSection
                                        • Suspicious use of WriteProcessMemory
                                        PID:3832
                                      • C:\Windows\explorer.exe
                                        C:\Windows\explorer.exe
                                        1⤵
                                        • Suspicious behavior: MapViewOfSection
                                        • Suspicious use of WriteProcessMemory
                                        PID:3400
                                      • C:\Windows\SysWOW64\explorer.exe
                                        C:\Windows\SysWOW64\explorer.exe
                                        1⤵
                                        • Suspicious behavior: MapViewOfSection
                                        • Suspicious use of WriteProcessMemory
                                        PID:3088
                                      • C:\Windows\explorer.exe
                                        C:\Windows\explorer.exe
                                        1⤵
                                        • Suspicious behavior: MapViewOfSection
                                        • Suspicious use of WriteProcessMemory
                                        PID:3272
                                      • C:\Windows\SysWOW64\explorer.exe
                                        C:\Windows\SysWOW64\explorer.exe
                                        1⤵
                                        • Suspicious behavior: MapViewOfSection
                                        • Suspicious use of WriteProcessMemory
                                        PID:3208
                                      • C:\Windows\explorer.exe
                                        C:\Windows\explorer.exe
                                        1⤵
                                        • Suspicious behavior: MapViewOfSection
                                        • Suspicious use of WriteProcessMemory
                                        PID:1744
                                      • C:\Windows\system32\WerFault.exe
                                        C:\Windows\system32\WerFault.exe -pss -s 412 -p 2800 -ip 2800
                                        1⤵
                                        • Suspicious use of NtCreateProcessExOtherParentProcess
                                        PID:2816
                                      • C:\Windows\system32\DllHost.exe
                                        C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                        1⤵
                                          PID:3996
                                          • C:\Windows\system32\WerFault.exe
                                            C:\Windows\system32\WerFault.exe -u -p 3996 -s 836
                                            2⤵
                                            • Program crash
                                            • Checks processor information in registry
                                            • Enumerates system info in registry
                                            PID:960
                                        • C:\Windows\system32\WerFault.exe
                                          C:\Windows\system32\WerFault.exe -pss -s 452 -p 3996 -ip 3996
                                          1⤵
                                          • Suspicious use of NtCreateProcessExOtherParentProcess
                                          PID:1620
                                        • C:\Windows\system32\DllHost.exe
                                          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                          1⤵
                                            PID:1148
                                            • C:\Windows\system32\WerFault.exe
                                              C:\Windows\system32\WerFault.exe -u -p 1148 -s 812
                                              2⤵
                                              • Program crash
                                              • Checks processor information in registry
                                              • Enumerates system info in registry
                                              PID:2236
                                          • C:\Windows\system32\WerFault.exe
                                            C:\Windows\system32\WerFault.exe -pss -s 480 -p 1148 -ip 1148
                                            1⤵
                                            • Suspicious use of NtCreateProcessExOtherParentProcess
                                            PID:3988
                                          • C:\Windows\system32\DllHost.exe
                                            C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                            1⤵
                                              PID:2664
                                              • C:\Windows\system32\WerFault.exe
                                                C:\Windows\system32\WerFault.exe -u -p 2664 -s 808
                                                2⤵
                                                • Program crash
                                                • Checks processor information in registry
                                                • Enumerates system info in registry
                                                PID:8
                                            • C:\Windows\system32\WerFault.exe
                                              C:\Windows\system32\WerFault.exe -pss -s 404 -p 2664 -ip 2664
                                              1⤵
                                              • Suspicious use of NtCreateProcessExOtherParentProcess
                                              PID:3416

                                            Network

                                            MITRE ATT&CK Enterprise v6

                                            Replay Monitor

                                            Loading Replay Monitor...

                                            Downloads

                                            • C:\Users\Admin\AppData\Local\Temp\672E.exe

                                              MD5

                                              005e445db353075922c066d7a792f78f

                                              SHA1

                                              79aa6671076b491c0b016275161e6145b7a7a7c1

                                              SHA256

                                              e073d3debf3ced92c55317b98b6a4d31c8757af4edbddf97c405f555d6d264c0

                                              SHA512

                                              d355882916d84b8b848394851bd48f9ed74d6c715f09efe0e25b1e392e1bc148d683dc3ef5bb2aa80654bba7f7361c1d9d541b777c81b3f5e02dce3cd251d29a

                                            • C:\Users\Admin\AppData\Local\Temp\672E.exe

                                              MD5

                                              005e445db353075922c066d7a792f78f

                                              SHA1

                                              79aa6671076b491c0b016275161e6145b7a7a7c1

                                              SHA256

                                              e073d3debf3ced92c55317b98b6a4d31c8757af4edbddf97c405f555d6d264c0

                                              SHA512

                                              d355882916d84b8b848394851bd48f9ed74d6c715f09efe0e25b1e392e1bc148d683dc3ef5bb2aa80654bba7f7361c1d9d541b777c81b3f5e02dce3cd251d29a

                                            • C:\Users\Admin\AppData\Roaming\thfttfc

                                              MD5

                                              005e445db353075922c066d7a792f78f

                                              SHA1

                                              79aa6671076b491c0b016275161e6145b7a7a7c1

                                              SHA256

                                              e073d3debf3ced92c55317b98b6a4d31c8757af4edbddf97c405f555d6d264c0

                                              SHA512

                                              d355882916d84b8b848394851bd48f9ed74d6c715f09efe0e25b1e392e1bc148d683dc3ef5bb2aa80654bba7f7361c1d9d541b777c81b3f5e02dce3cd251d29a

                                            • C:\Users\Admin\AppData\Roaming\thfttfc

                                              MD5

                                              005e445db353075922c066d7a792f78f

                                              SHA1

                                              79aa6671076b491c0b016275161e6145b7a7a7c1

                                              SHA256

                                              e073d3debf3ced92c55317b98b6a4d31c8757af4edbddf97c405f555d6d264c0

                                              SHA512

                                              d355882916d84b8b848394851bd48f9ed74d6c715f09efe0e25b1e392e1bc148d683dc3ef5bb2aa80654bba7f7361c1d9d541b777c81b3f5e02dce3cd251d29a

                                            • memory/532-138-0x0000000000500000-0x000000000052B000-memory.dmp

                                              Filesize

                                              172KB

                                            • memory/532-139-0x00000000004F0000-0x00000000004F9000-memory.dmp

                                              Filesize

                                              36KB

                                            • memory/532-140-0x0000000000400000-0x000000000047E000-memory.dmp

                                              Filesize

                                              504KB

                                            • memory/576-276-0x000001EC69110000-0x000001EC69111000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/576-275-0x000001EC69110000-0x000001EC69111000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/808-265-0x00000000045E0000-0x00000000045EB000-memory.dmp

                                              Filesize

                                              44KB

                                            • memory/808-264-0x00000000045F0000-0x00000000045F1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/1368-253-0x00000000012D0000-0x00000000012DC000-memory.dmp

                                              Filesize

                                              48KB

                                            • memory/1744-267-0x0000000000570000-0x000000000057D000-memory.dmp

                                              Filesize

                                              52KB

                                            • memory/1744-266-0x0000000000580000-0x0000000000587000-memory.dmp

                                              Filesize

                                              28KB

                                            • memory/2236-130-0x0000000000720000-0x000000000074B000-memory.dmp

                                              Filesize

                                              172KB

                                            • memory/2236-131-0x0000000000710000-0x0000000000719000-memory.dmp

                                              Filesize

                                              36KB

                                            • memory/2236-132-0x0000000000400000-0x000000000047D000-memory.dmp

                                              Filesize

                                              500KB

                                            • memory/2296-268-0x000001F3AC7D0000-0x000001F3AC7D1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2320-269-0x0000023857160000-0x0000023857161000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2368-270-0x000001B0D63D0000-0x000001B0D63D1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2520-141-0x0000000003220000-0x0000000003236000-memory.dmp

                                              Filesize

                                              88KB

                                            • memory/2520-133-0x00000000013B0000-0x00000000013C6000-memory.dmp

                                              Filesize

                                              88KB

                                            • memory/2552-218-0x0000000000830000-0x000000000085B000-memory.dmp

                                              Filesize

                                              172KB

                                            • memory/2552-241-0x0000000000400000-0x000000000047E000-memory.dmp

                                              Filesize

                                              504KB

                                            • memory/2612-271-0x0000019E3DA00000-0x0000019E3DA01000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2908-272-0x000002AD98970000-0x000002AD98971000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2972-273-0x000002699BAE0000-0x000002699BAE1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/3088-259-0x00000000030F0000-0x00000000030F9000-memory.dmp

                                              Filesize

                                              36KB

                                            • memory/3088-258-0x0000000003100000-0x0000000003105000-memory.dmp

                                              Filesize

                                              20KB

                                            • memory/3208-262-0x0000000003100000-0x0000000003106000-memory.dmp

                                              Filesize

                                              24KB

                                            • memory/3208-263-0x00000000030F0000-0x00000000030FB000-memory.dmp

                                              Filesize

                                              44KB

                                            • memory/3236-274-0x0000021BD08F0000-0x0000021BD08F1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/3272-261-0x00000000003D0000-0x00000000003DC000-memory.dmp

                                              Filesize

                                              48KB

                                            • memory/3272-260-0x00000000003E0000-0x00000000003E6000-memory.dmp

                                              Filesize

                                              24KB

                                            • memory/3400-257-0x0000000000190000-0x000000000019E000-memory.dmp

                                              Filesize

                                              56KB

                                            • memory/3400-256-0x00000000001A0000-0x00000000001A9000-memory.dmp

                                              Filesize

                                              36KB

                                            • memory/3668-252-0x0000000000600000-0x000000000066B000-memory.dmp

                                              Filesize

                                              428KB

                                            • memory/3668-251-0x0000000000670000-0x00000000006E5000-memory.dmp

                                              Filesize

                                              468KB

                                            • memory/3832-255-0x0000000002FF0000-0x0000000002FFB000-memory.dmp

                                              Filesize

                                              44KB

                                            • memory/3832-254-0x0000000003200000-0x0000000003207000-memory.dmp

                                              Filesize

                                              28KB