Analysis

  • max time kernel
    44s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    17-01-2023 14:51

General

  • Target

    UDS-Trojan-PSW.MSIL.Tepfer.gen-09342b36eeaad2.exe

  • Size

    2.4MB

  • MD5

    b8ebe55c83b79c2f0c4c15ac4ec8c3a0

  • SHA1

    c13137e3bfb16f61e5c69f60248be578bdd70551

  • SHA256

    09342b36eeaad27a94f1fd6817bf161cf1c9194709ce8fe869afccd4239f4db3

  • SHA512

    93778d19151b28cfea617ca64e707d43a6bcb342bb502ea2e9723200f71a2f26cea3f1f128e7252528eb586e85eb35b47b08afd58056aaf1c84fdd29a57feb9b

  • SSDEEP

    49152:ubA34q6DjV16+6mCoG4HWT9TV6fsmLp3nfw9heL5fE3zdbg1NG:ubRDjV1x6mCoPYofsy9wvg5fgzd0HG

Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • DCRat payload 11 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Drops file in System32 directory 11 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 9 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 55 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\UDS-Trojan-PSW.MSIL.Tepfer.gen-09342b36eeaad2.exe
    "C:\Users\Admin\AppData\Local\Temp\UDS-Trojan-PSW.MSIL.Tepfer.gen-09342b36eeaad2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2024
    • C:\Users\Admin\AppData\Roaming\output.exe
      "C:\Users\Admin\AppData\Roaming\output.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:644
      • C:\Users\Admin\AppData\Local\Temp\qtOLGyaELuyA.exe
        "C:\Users\Admin\AppData\Local\Temp\qtOLGyaELuyA.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:568
        • C:\Users\Admin\AppData\Roaming\protectuser.exe
          "C:\Users\Admin\AppData\Roaming\protectuser.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1896
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\C_437\spoolsv.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1936
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "lsm" /sc ONLOGON /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsm.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1460
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\Windows\System32\wbem\scrcons\WMIADAP.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:464
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Java\jre7\lib\deploy\dwm.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:268
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "protectuser" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\hrtfs\protectuser.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1384
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\wow64\winlogon.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1832
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\Setup\State\spoolsv.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1072
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\System32\vbisurf\sppsvc.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:988
          • C:\Windows\system32\schtasks.exe
            "schtasks" /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\C_28599\spoolsv.exe'" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1732
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\5lrxVqtzZs.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1572
            • C:\Windows\system32\chcp.com
              chcp 65001
              6⤵
                PID:1660
              • C:\Windows\system32\PING.EXE
                ping -n 5 localhost
                6⤵
                • Runs ping.exe
                PID:1672
              • C:\Windows\System32\wbem\scrcons\WMIADAP.exe
                "C:\Windows\System32\wbem\scrcons\WMIADAP.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:764
          • C:\Users\Admin\AppData\Roaming\SteamKeyBoost.exe
            "C:\Users\Admin\AppData\Roaming\SteamKeyBoost.exe"
            4⤵
            • Executes dropped EXE
            PID:1592

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\5lrxVqtzZs.bat

      Filesize

      210B

      MD5

      19d8deaf34654cd4e5367c2493100664

      SHA1

      2b7fe5dda6391fbd87f7c9bb57a3b2e5370bc931

      SHA256

      c98fa07c442225e2617e017373a0d66c4836401017794ca991db8616a2dbff5a

      SHA512

      9339b32b844ffdbc019ea767a4517f7cbc5363413b2f71bff84ce974353b58f263f7a08551b1272c872a80d6484d901dbe2168beda2ff9418fe760487fc15a01

    • C:\Users\Admin\AppData\Local\Temp\qtOLGyaELuyA.exe

      Filesize

      2.0MB

      MD5

      624ba3439ab7210c7eb0b2326e4fbd9a

      SHA1

      6815d815dde9ff0dcd17e56505a08566026bd7b7

      SHA256

      8fe8f3efc119e54d0946abefd2e439d6b9a729213cd7991743631823730a77cc

      SHA512

      7d2cd2a7011eac0f99f16bfe80f35c18f094fb6fd08438680bee343ee378ce3486a8b4763687acc123d4d26bf97562643576577d9eaa269ec23aca8eab866992

    • C:\Users\Admin\AppData\Local\Temp\qtOLGyaELuyA.exe

      Filesize

      2.0MB

      MD5

      624ba3439ab7210c7eb0b2326e4fbd9a

      SHA1

      6815d815dde9ff0dcd17e56505a08566026bd7b7

      SHA256

      8fe8f3efc119e54d0946abefd2e439d6b9a729213cd7991743631823730a77cc

      SHA512

      7d2cd2a7011eac0f99f16bfe80f35c18f094fb6fd08438680bee343ee378ce3486a8b4763687acc123d4d26bf97562643576577d9eaa269ec23aca8eab866992

    • C:\Users\Admin\AppData\Roaming\SteamKeyBoost.exe

      Filesize

      2.3MB

      MD5

      7c3cab1d97259537f098637a470200c3

      SHA1

      87c760496eda6bc4a9ac3e6d76f20843e52d4de1

      SHA256

      fa44ed8e4fe3acf3033daf19db1b05b47fb8e2d9bc8a473d07756b0dba35177c

      SHA512

      7355bafbf5a483df81f26074868749eba153610e81b2594f2c4fb9136502c3c487cad2812beca258c193bca0d498afa5bae85335dd248ed53af63341887f3b4f

    • C:\Users\Admin\AppData\Roaming\SteamKeyBoost.exe

      Filesize

      2.3MB

      MD5

      7c3cab1d97259537f098637a470200c3

      SHA1

      87c760496eda6bc4a9ac3e6d76f20843e52d4de1

      SHA256

      fa44ed8e4fe3acf3033daf19db1b05b47fb8e2d9bc8a473d07756b0dba35177c

      SHA512

      7355bafbf5a483df81f26074868749eba153610e81b2594f2c4fb9136502c3c487cad2812beca258c193bca0d498afa5bae85335dd248ed53af63341887f3b4f

    • C:\Users\Admin\AppData\Roaming\output.exe

      Filesize

      2.6MB

      MD5

      e7eb08585396e571d260dd55956e0a65

      SHA1

      bdf532d6ebe2b0de0d4fff8ba5f580101920335d

      SHA256

      55e95bfde07d8e6ab7824dd0a0b9a4e67e622793233729541ef258bf3610d434

      SHA512

      d2ddfbea5863566d8168c13eb7c311fec027af56db7cd2277f25ec800a6a63483f3e8cc89a519c57dc0bf20b51d0e0a64a603635519627c33decd00dcf70e49d

    • C:\Users\Admin\AppData\Roaming\output.exe

      Filesize

      2.6MB

      MD5

      e7eb08585396e571d260dd55956e0a65

      SHA1

      bdf532d6ebe2b0de0d4fff8ba5f580101920335d

      SHA256

      55e95bfde07d8e6ab7824dd0a0b9a4e67e622793233729541ef258bf3610d434

      SHA512

      d2ddfbea5863566d8168c13eb7c311fec027af56db7cd2277f25ec800a6a63483f3e8cc89a519c57dc0bf20b51d0e0a64a603635519627c33decd00dcf70e49d

    • C:\Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • C:\Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • C:\Windows\System32\wbem\scrcons\WMIADAP.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • C:\Windows\System32\wbem\scrcons\WMIADAP.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • \Users\Admin\AppData\Local\Temp\qtOLGyaELuyA.exe

      Filesize

      2.0MB

      MD5

      624ba3439ab7210c7eb0b2326e4fbd9a

      SHA1

      6815d815dde9ff0dcd17e56505a08566026bd7b7

      SHA256

      8fe8f3efc119e54d0946abefd2e439d6b9a729213cd7991743631823730a77cc

      SHA512

      7d2cd2a7011eac0f99f16bfe80f35c18f094fb6fd08438680bee343ee378ce3486a8b4763687acc123d4d26bf97562643576577d9eaa269ec23aca8eab866992

    • \Users\Admin\AppData\Roaming\SteamKeyBoost.exe

      Filesize

      2.3MB

      MD5

      7c3cab1d97259537f098637a470200c3

      SHA1

      87c760496eda6bc4a9ac3e6d76f20843e52d4de1

      SHA256

      fa44ed8e4fe3acf3033daf19db1b05b47fb8e2d9bc8a473d07756b0dba35177c

      SHA512

      7355bafbf5a483df81f26074868749eba153610e81b2594f2c4fb9136502c3c487cad2812beca258c193bca0d498afa5bae85335dd248ed53af63341887f3b4f

    • \Users\Admin\AppData\Roaming\SteamKeyBoost.exe

      Filesize

      2.3MB

      MD5

      7c3cab1d97259537f098637a470200c3

      SHA1

      87c760496eda6bc4a9ac3e6d76f20843e52d4de1

      SHA256

      fa44ed8e4fe3acf3033daf19db1b05b47fb8e2d9bc8a473d07756b0dba35177c

      SHA512

      7355bafbf5a483df81f26074868749eba153610e81b2594f2c4fb9136502c3c487cad2812beca258c193bca0d498afa5bae85335dd248ed53af63341887f3b4f

    • \Users\Admin\AppData\Roaming\SteamKeyBoost.exe

      Filesize

      2.3MB

      MD5

      7c3cab1d97259537f098637a470200c3

      SHA1

      87c760496eda6bc4a9ac3e6d76f20843e52d4de1

      SHA256

      fa44ed8e4fe3acf3033daf19db1b05b47fb8e2d9bc8a473d07756b0dba35177c

      SHA512

      7355bafbf5a483df81f26074868749eba153610e81b2594f2c4fb9136502c3c487cad2812beca258c193bca0d498afa5bae85335dd248ed53af63341887f3b4f

    • \Users\Admin\AppData\Roaming\SteamKeyBoost.exe

      Filesize

      2.3MB

      MD5

      7c3cab1d97259537f098637a470200c3

      SHA1

      87c760496eda6bc4a9ac3e6d76f20843e52d4de1

      SHA256

      fa44ed8e4fe3acf3033daf19db1b05b47fb8e2d9bc8a473d07756b0dba35177c

      SHA512

      7355bafbf5a483df81f26074868749eba153610e81b2594f2c4fb9136502c3c487cad2812beca258c193bca0d498afa5bae85335dd248ed53af63341887f3b4f

    • \Users\Admin\AppData\Roaming\output.exe

      Filesize

      2.6MB

      MD5

      e7eb08585396e571d260dd55956e0a65

      SHA1

      bdf532d6ebe2b0de0d4fff8ba5f580101920335d

      SHA256

      55e95bfde07d8e6ab7824dd0a0b9a4e67e622793233729541ef258bf3610d434

      SHA512

      d2ddfbea5863566d8168c13eb7c311fec027af56db7cd2277f25ec800a6a63483f3e8cc89a519c57dc0bf20b51d0e0a64a603635519627c33decd00dcf70e49d

    • \Users\Admin\AppData\Roaming\output.exe

      Filesize

      2.6MB

      MD5

      e7eb08585396e571d260dd55956e0a65

      SHA1

      bdf532d6ebe2b0de0d4fff8ba5f580101920335d

      SHA256

      55e95bfde07d8e6ab7824dd0a0b9a4e67e622793233729541ef258bf3610d434

      SHA512

      d2ddfbea5863566d8168c13eb7c311fec027af56db7cd2277f25ec800a6a63483f3e8cc89a519c57dc0bf20b51d0e0a64a603635519627c33decd00dcf70e49d

    • \Users\Admin\AppData\Roaming\output.exe

      Filesize

      2.6MB

      MD5

      e7eb08585396e571d260dd55956e0a65

      SHA1

      bdf532d6ebe2b0de0d4fff8ba5f580101920335d

      SHA256

      55e95bfde07d8e6ab7824dd0a0b9a4e67e622793233729541ef258bf3610d434

      SHA512

      d2ddfbea5863566d8168c13eb7c311fec027af56db7cd2277f25ec800a6a63483f3e8cc89a519c57dc0bf20b51d0e0a64a603635519627c33decd00dcf70e49d

    • \Users\Admin\AppData\Roaming\output.exe

      Filesize

      2.6MB

      MD5

      e7eb08585396e571d260dd55956e0a65

      SHA1

      bdf532d6ebe2b0de0d4fff8ba5f580101920335d

      SHA256

      55e95bfde07d8e6ab7824dd0a0b9a4e67e622793233729541ef258bf3610d434

      SHA512

      d2ddfbea5863566d8168c13eb7c311fec027af56db7cd2277f25ec800a6a63483f3e8cc89a519c57dc0bf20b51d0e0a64a603635519627c33decd00dcf70e49d

    • \Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • \Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • \Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • \Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • \Users\Admin\AppData\Roaming\protectuser.exe

      Filesize

      1.5MB

      MD5

      4d4416d03c666f90cdffed05443b2ad1

      SHA1

      51dcca8d0e1b4d15f48497e42a421f5e4427bfd7

      SHA256

      09f8d2c21b615748a3789084587025142032537945301db93fc828adc836c7b6

      SHA512

      2556ed2aa689867285882543eebed0a6aa1a5af387fe15a2a5ef2138904fbd55c48b3ae81dac0ef783f55616e6eeeda4f6b5cb7a7751e10a9ac316899d0c21d3

    • memory/268-91-0x0000000000000000-mapping.dmp

    • memory/464-90-0x0000000000000000-mapping.dmp

    • memory/568-67-0x0000000000000000-mapping.dmp

    • memory/644-62-0x0000000000A60000-0x0000000000CF6000-memory.dmp

      Filesize

      2.6MB

    • memory/644-64-0x0000000000390000-0x0000000000396000-memory.dmp

      Filesize

      24KB

    • memory/644-59-0x0000000000000000-mapping.dmp

    • memory/644-63-0x0000000000300000-0x0000000000306000-memory.dmp

      Filesize

      24KB

    • memory/764-102-0x0000000000000000-mapping.dmp

    • memory/764-104-0x0000000000A50000-0x0000000000BD0000-memory.dmp

      Filesize

      1.5MB

    • memory/988-95-0x0000000000000000-mapping.dmp

    • memory/1072-94-0x0000000000000000-mapping.dmp

    • memory/1384-92-0x0000000000000000-mapping.dmp

    • memory/1460-89-0x0000000000000000-mapping.dmp

    • memory/1572-97-0x0000000000000000-mapping.dmp

    • memory/1592-83-0x0000000000000000-mapping.dmp

    • memory/1660-99-0x0000000000000000-mapping.dmp

    • memory/1672-100-0x0000000000000000-mapping.dmp

    • memory/1732-96-0x0000000000000000-mapping.dmp

    • memory/1832-93-0x0000000000000000-mapping.dmp

    • memory/1896-87-0x0000000001230000-0x00000000013B0000-memory.dmp

      Filesize

      1.5MB

    • memory/1896-76-0x0000000000000000-mapping.dmp

    • memory/1936-88-0x0000000000000000-mapping.dmp

    • memory/2024-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

      Filesize

      8KB