Analysis

  • max time kernel
    159s
  • max time network
    167s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    26-01-2022 07:26

General

  • Target

    ac8dcde9968f3614f4db0ccd26383366560b3936c5a5905c1d8e10a6a9798363.exe

  • Size

    333KB

  • MD5

    472e832877e234183aff01d044a48a04

  • SHA1

    918a3cde50c5af1310bf2f2b23fdc5c1674beb46

  • SHA256

    ac8dcde9968f3614f4db0ccd26383366560b3936c5a5905c1d8e10a6a9798363

  • SHA512

    495403a8dfce7231ccd38bdb39885a91e705e54b06966da4cdc13f63e6a9245d183fe5aa450ff27bfa24dce82a03f958ed67cf06eaff247c3b0e933d78444ce1

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.

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Deletes itself 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers network information 2 TTPs 4 IoCs

    Uses commandline utility to view network configuration.

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Modifies Internet Explorer settings 1 TTPs 14 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 48 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
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
      PID:3340
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
        PID:3832
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 3832 -s 900
          2⤵
          • Program crash
          PID:744
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3540
        • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
          1⤵
            PID:3352
          • c:\windows\system32\taskhostw.exe
            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
            1⤵
              PID:2424
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k unistacksvcgroup -s CDPUserSvc
              1⤵
                PID:2360
              • c:\windows\system32\sihost.exe
                sihost.exe
                1⤵
                  PID:2344
                • C:\Users\Admin\AppData\Local\Temp\ac8dcde9968f3614f4db0ccd26383366560b3936c5a5905c1d8e10a6a9798363.exe
                  "C:\Users\Admin\AppData\Local\Temp\ac8dcde9968f3614f4db0ccd26383366560b3936c5a5905c1d8e10a6a9798363.exe"
                  1⤵
                  • Checks SCSI registry key(s)
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious behavior: MapViewOfSection
                  PID:3416
                • C:\Users\Admin\AppData\Local\Temp\2EFB.exe
                  C:\Users\Admin\AppData\Local\Temp\2EFB.exe
                  1⤵
                  • Executes dropped EXE
                  • Checks SCSI registry key(s)
                  • Suspicious behavior: MapViewOfSection
                  PID:4344
                • C:\Windows\system32\cmd.exe
                  cmd
                  1⤵
                  • Suspicious use of WriteProcessMemory
                  PID:4296
                  • C:\Windows\System32\Wbem\WMIC.exe
                    wmic /namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /format:csv
                    2⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3164
                  • C:\Windows\System32\Wbem\WMIC.exe
                    wmic /namespace:\\root\SecurityCenter2 Path FirewallProduct Get displayName /format:csv
                    2⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3236
                  • C:\Windows\System32\Wbem\WMIC.exe
                    wmic /namespace:\\root\SecurityCenter2 Path AntiSpywareProduct Get displayName /format:csv
                    2⤵
                      PID:644
                    • C:\Windows\System32\Wbem\WMIC.exe
                      wmic /namespace:\\root\cimv2 Path Win32_Processor Get Name,DeviceID,NumberOfCores /format:csv
                      2⤵
                        PID:860
                      • C:\Windows\System32\Wbem\WMIC.exe
                        wmic /namespace:\\root\cimv2 Path Win32_Product Get Name,Version /format:csv
                        2⤵
                          PID:592
                        • C:\Windows\System32\Wbem\WMIC.exe
                          wmic /namespace:\\root\cimv2 Path Win32_NetworkAdapter Where PhysicalAdapter=TRUE Get Name,MACAddress,ProductName,ServiceName,NetConnectionID /format:csv
                          2⤵
                            PID:2816
                          • C:\Windows\System32\Wbem\WMIC.exe
                            wmic /namespace:\\root\cimv2 Path Win32_StartupCommand Get Name,Location,Command /format:csv
                            2⤵
                              PID:3580
                            • C:\Windows\System32\Wbem\WMIC.exe
                              wmic /namespace:\\root\cimv2 Path Win32_OperatingSystem Get Caption,CSDVersion,BuildNumber,Version,BuildType,CountryCode,CurrentTimeZone,InstallDate,LastBootUpTime,Locale,OSArchitecture,OSLanguage,OSProductSuite,OSType,SystemDirectory,Organization,RegisteredUser,SerialNumber /format:csv
                              2⤵
                                PID:4536
                              • C:\Windows\System32\Wbem\WMIC.exe
                                wmic /namespace:\\root\cimv2 Path Win32_Process Get Caption,CommandLine,ExecutablePath,ProcessId /format:csv
                                2⤵
                                  PID:2600
                                • C:\Windows\System32\Wbem\WMIC.exe
                                  wmic /namespace:\\root\cimv2 Path Win32_Volume Get Name,Label,FileSystem,SerialNumber,BootVolume,Capacity,DriveType /format:csv
                                  2⤵
                                    PID:4808
                                  • C:\Windows\System32\Wbem\WMIC.exe
                                    wmic /namespace:\\root\cimv2 Path Win32_UserAccount Get Name,Domain,AccountType,LocalAccount,Disabled,Status,SID /format:csv
                                    2⤵
                                      PID:1236
                                    • C:\Windows\System32\Wbem\WMIC.exe
                                      wmic /namespace:\\root\cimv2 Path Win32_GroupUser Get GroupComponent,PartComponent /format:csv
                                      2⤵
                                        PID:4916
                                      • C:\Windows\System32\Wbem\WMIC.exe
                                        wmic /namespace:\\root\cimv2 Path Win32_ComputerSystem Get Caption,Manufacturer,PrimaryOwnerName,UserName,Workgroup /format:csv
                                        2⤵
                                          PID:4980
                                        • C:\Windows\System32\Wbem\WMIC.exe
                                          wmic /namespace:\\root\cimv2 Path Win32_PnPEntity Where ClassGuid="{50dd5230-ba8a-11d1-bf5d-0000f805f530}" Get Name,DeviceID,PNPDeviceID,Manufacturer,Description /format:csv
                                          2⤵
                                            PID:1456
                                          • C:\Windows\system32\ipconfig.exe
                                            ipconfig /displaydns
                                            2⤵
                                            • Gathers network information
                                            PID:4872
                                          • C:\Windows\system32\ROUTE.EXE
                                            route print
                                            2⤵
                                              PID:4876
                                            • C:\Windows\system32\netsh.exe
                                              netsh firewall show state
                                              2⤵
                                                PID:4912
                                              • C:\Windows\system32\systeminfo.exe
                                                systeminfo
                                                2⤵
                                                • Gathers system information
                                                PID:4580
                                              • C:\Windows\system32\tasklist.exe
                                                tasklist /v
                                                2⤵
                                                • Enumerates processes with tasklist
                                                PID:1076
                                              • C:\Windows\system32\net.exe
                                                net accounts /domain
                                                2⤵
                                                • Suspicious use of WriteProcessMemory
                                                PID:60
                                                • C:\Windows\system32\net1.exe
                                                  C:\Windows\system32\net1 accounts /domain
                                                  3⤵
                                                    PID:1160
                                                • C:\Windows\system32\net.exe
                                                  net share
                                                  2⤵
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:1084
                                                  • C:\Windows\system32\net1.exe
                                                    C:\Windows\system32\net1 share
                                                    3⤵
                                                      PID:5020
                                                  • C:\Windows\system32\net.exe
                                                    net user
                                                    2⤵
                                                    • Suspicious use of WriteProcessMemory
                                                    PID:4656
                                                    • C:\Windows\system32\net1.exe
                                                      C:\Windows\system32\net1 user
                                                      3⤵
                                                        PID:4944
                                                    • C:\Windows\system32\net.exe
                                                      net user /domain
                                                      2⤵
                                                      • Suspicious use of WriteProcessMemory
                                                      PID:5036
                                                      • C:\Windows\system32\net1.exe
                                                        C:\Windows\system32\net1 user /domain
                                                        3⤵
                                                          PID:3748
                                                      • C:\Windows\system32\net.exe
                                                        net use
                                                        2⤵
                                                          PID:1240
                                                        • C:\Windows\system32\net.exe
                                                          net group
                                                          2⤵
                                                          • Suspicious use of WriteProcessMemory
                                                          PID:4528
                                                          • C:\Windows\system32\net1.exe
                                                            C:\Windows\system32\net1 group
                                                            3⤵
                                                              PID:1296
                                                          • C:\Windows\system32\net.exe
                                                            net localgroup
                                                            2⤵
                                                              PID:2192
                                                              • C:\Windows\system32\net1.exe
                                                                C:\Windows\system32\net1 localgroup
                                                                3⤵
                                                                  PID:1428
                                                              • C:\Windows\system32\NETSTAT.EXE
                                                                netstat -r
                                                                2⤵
                                                                • Gathers network information
                                                                PID:2784
                                                                • C:\Windows\system32\cmd.exe
                                                                  C:\Windows\system32\cmd.exe /c "C:\Windows\system32\route.exe" print
                                                                  3⤵
                                                                    PID:1660
                                                                    • C:\Windows\system32\ROUTE.EXE
                                                                      C:\Windows\system32\route.exe print
                                                                      4⤵
                                                                        PID:2020
                                                                  • C:\Windows\system32\NETSTAT.EXE
                                                                    netstat -nao
                                                                    2⤵
                                                                    • Gathers network information
                                                                    PID:2280
                                                                  • C:\Windows\system32\schtasks.exe
                                                                    schtasks /query
                                                                    2⤵
                                                                      PID:3024
                                                                    • C:\Windows\system32\ipconfig.exe
                                                                      ipconfig /all
                                                                      2⤵
                                                                      • Gathers network information
                                                                      PID:1924
                                                                  • C:\Windows\system32\msiexec.exe
                                                                    C:\Windows\system32\msiexec.exe /V
                                                                    1⤵
                                                                      PID:1156
                                                                    • 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
                                                                      PID:2248
                                                                      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                                                                        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2248 CREDAT:82945 /prefetch:2
                                                                        2⤵
                                                                        • Modifies Internet Explorer settings
                                                                        • Suspicious use of SetWindowsHookEx
                                                                        PID:3008
                                                                    • C:\Windows\SysWOW64\explorer.exe
                                                                      C:\Windows\SysWOW64\explorer.exe
                                                                      1⤵
                                                                      • Accesses Microsoft Outlook profiles
                                                                      • outlook_office_path
                                                                      • outlook_win_path
                                                                      PID:3028
                                                                    • C:\Windows\explorer.exe
                                                                      C:\Windows\explorer.exe
                                                                      1⤵
                                                                        PID:4448
                                                                      • C:\Windows\SysWOW64\explorer.exe
                                                                        C:\Windows\SysWOW64\explorer.exe
                                                                        1⤵
                                                                        • Suspicious behavior: MapViewOfSection
                                                                        PID:3280
                                                                      • C:\Windows\explorer.exe
                                                                        C:\Windows\explorer.exe
                                                                        1⤵
                                                                        • Suspicious behavior: MapViewOfSection
                                                                        PID:2204
                                                                      • C:\Windows\SysWOW64\explorer.exe
                                                                        C:\Windows\SysWOW64\explorer.exe
                                                                        1⤵
                                                                        • Suspicious behavior: MapViewOfSection
                                                                        PID:5032
                                                                      • C:\Windows\explorer.exe
                                                                        C:\Windows\explorer.exe
                                                                        1⤵
                                                                        • Suspicious behavior: MapViewOfSection
                                                                        PID:2592
                                                                      • C:\Windows\SysWOW64\explorer.exe
                                                                        C:\Windows\SysWOW64\explorer.exe
                                                                        1⤵
                                                                        • Suspicious behavior: MapViewOfSection
                                                                        PID:3052
                                                                      • C:\Windows\explorer.exe
                                                                        C:\Windows\explorer.exe
                                                                        1⤵
                                                                        • Suspicious behavior: MapViewOfSection
                                                                        PID:4116

                                                                      Network

                                                                      MITRE ATT&CK Matrix ATT&CK v6

                                                                      Execution

                                                                      Command-Line Interface

                                                                      1
                                                                      T1059

                                                                      Persistence

                                                                      Modify Existing Service

                                                                      1
                                                                      T1031

                                                                      Defense Evasion

                                                                      Modify Registry

                                                                      1
                                                                      T1112

                                                                      Discovery

                                                                      Query Registry

                                                                      1
                                                                      T1012

                                                                      Peripheral Device Discovery

                                                                      1
                                                                      T1120

                                                                      System Information Discovery

                                                                      3
                                                                      T1082

                                                                      Process Discovery

                                                                      1
                                                                      T1057

                                                                      Collection

                                                                      Email Collection

                                                                      1
                                                                      T1114

                                                                      Replay Monitor

                                                                      Loading Replay Monitor...

                                                                      Downloads

                                                                      • C:\Users\Admin\AppData\Local\Temp\2EFB.exe
                                                                        MD5

                                                                        005e445db353075922c066d7a792f78f

                                                                        SHA1

                                                                        79aa6671076b491c0b016275161e6145b7a7a7c1

                                                                        SHA256

                                                                        e073d3debf3ced92c55317b98b6a4d31c8757af4edbddf97c405f555d6d264c0

                                                                        SHA512

                                                                        d355882916d84b8b848394851bd48f9ed74d6c715f09efe0e25b1e392e1bc148d683dc3ef5bb2aa80654bba7f7361c1d9d541b777c81b3f5e02dce3cd251d29a

                                                                      • C:\Users\Admin\AppData\Local\Temp\2EFB.exe
                                                                        MD5

                                                                        005e445db353075922c066d7a792f78f

                                                                        SHA1

                                                                        79aa6671076b491c0b016275161e6145b7a7a7c1

                                                                        SHA256

                                                                        e073d3debf3ced92c55317b98b6a4d31c8757af4edbddf97c405f555d6d264c0

                                                                        SHA512

                                                                        d355882916d84b8b848394851bd48f9ed74d6c715f09efe0e25b1e392e1bc148d683dc3ef5bb2aa80654bba7f7361c1d9d541b777c81b3f5e02dce3cd251d29a

                                                                      • memory/396-124-0x0000000002B60000-0x0000000002B76000-memory.dmp
                                                                        Filesize

                                                                        88KB

                                                                      • memory/396-127-0x0000000002C50000-0x0000000002C5F000-memory.dmp
                                                                        Filesize

                                                                        60KB

                                                                      • memory/396-118-0x0000000000B20000-0x0000000000B36000-memory.dmp
                                                                        Filesize

                                                                        88KB

                                                                      • memory/744-158-0x000001F497000000-0x000001F497001000-memory.dmp
                                                                        Filesize

                                                                        4KB

                                                                      • memory/2204-144-0x00000000003D0000-0x00000000003DE000-memory.dmp
                                                                        Filesize

                                                                        56KB

                                                                      • memory/2204-143-0x00000000003E0000-0x00000000003E9000-memory.dmp
                                                                        Filesize

                                                                        36KB

                                                                      • memory/2344-153-0x0000026932C00000-0x0000026932C01000-memory.dmp
                                                                        Filesize

                                                                        4KB

                                                                      • memory/2360-154-0x0000020109B50000-0x0000020109B51000-memory.dmp
                                                                        Filesize

                                                                        4KB

                                                                      • memory/2424-155-0x000001C5B4850000-0x000001C5B4851000-memory.dmp
                                                                        Filesize

                                                                        4KB

                                                                      • memory/2424-157-0x000001C5B4B90000-0x000001C5B4B91000-memory.dmp
                                                                        Filesize

                                                                        4KB

                                                                      • memory/2592-147-0x0000000000AE0000-0x0000000000AE6000-memory.dmp
                                                                        Filesize

                                                                        24KB

                                                                      • memory/2592-148-0x0000000000AD0000-0x0000000000ADC000-memory.dmp
                                                                        Filesize

                                                                        48KB

                                                                      • memory/3028-138-0x0000000000960000-0x00000000009D5000-memory.dmp
                                                                        Filesize

                                                                        468KB

                                                                      • memory/3028-139-0x00000000008F0000-0x000000000095B000-memory.dmp
                                                                        Filesize

                                                                        428KB

                                                                      • memory/3052-150-0x00000000006B0000-0x00000000006BB000-memory.dmp
                                                                        Filesize

                                                                        44KB

                                                                      • memory/3052-149-0x00000000006C0000-0x00000000006C6000-memory.dmp
                                                                        Filesize

                                                                        24KB

                                                                      • memory/3280-142-0x0000000000CB0000-0x0000000000CBB000-memory.dmp
                                                                        Filesize

                                                                        44KB

                                                                      • memory/3280-141-0x0000000000CC0000-0x0000000000CC7000-memory.dmp
                                                                        Filesize

                                                                        28KB

                                                                      • memory/3416-115-0x0000000000680000-0x00000000006A9000-memory.dmp
                                                                        Filesize

                                                                        164KB

                                                                      • memory/3416-117-0x0000000000400000-0x000000000047E000-memory.dmp
                                                                        Filesize

                                                                        504KB

                                                                      • memory/3416-116-0x0000000000480000-0x00000000005CA000-memory.dmp
                                                                        Filesize

                                                                        1.3MB

                                                                      • memory/3540-156-0x000002677C8B0000-0x000002677C8B1000-memory.dmp
                                                                        Filesize

                                                                        4KB

                                                                      • memory/4116-151-0x00000000008E0000-0x00000000008E7000-memory.dmp
                                                                        Filesize

                                                                        28KB

                                                                      • memory/4116-152-0x00000000008D0000-0x00000000008DD000-memory.dmp
                                                                        Filesize

                                                                        52KB

                                                                      • memory/4344-123-0x0000000000400000-0x000000000047E000-memory.dmp
                                                                        Filesize

                                                                        504KB

                                                                      • memory/4344-122-0x00000000004D0000-0x00000000004D9000-memory.dmp
                                                                        Filesize

                                                                        36KB

                                                                      • memory/4448-140-0x0000000000990000-0x000000000099C000-memory.dmp
                                                                        Filesize

                                                                        48KB

                                                                      • memory/5032-146-0x0000000000350000-0x0000000000359000-memory.dmp
                                                                        Filesize

                                                                        36KB

                                                                      • memory/5032-145-0x0000000000360000-0x0000000000365000-memory.dmp
                                                                        Filesize

                                                                        20KB