Analysis

  • max time kernel
    153s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 12:37

General

  • Target

    62495c2cfde10b47d1c2cc907822fec4ca4f8b6e51c9216cf1dfdcc454c8a8d5.exe

  • Size

    762KB

  • MD5

    acaedef2c694bd1d58f4cb82ffb6318b

  • SHA1

    316f234a5571b199a7d948f541ad3982536c033a

  • SHA256

    62495c2cfde10b47d1c2cc907822fec4ca4f8b6e51c9216cf1dfdcc454c8a8d5

  • SHA512

    82f718bc54003f0537e7923285ed6d3188e458301f95029d0d273660f643755af5d2654f9acc4f23dd62e8fb15b0e114c308b7cf4dfbd673579f4f1d5b804513

Malware Config

Extracted

Family

darkcomet

Botnet

×èòåð

C2

62.33.2.50:1111

happycraft.hopto.org:1111

Mutex

DC_MUTEX-1BX3PA1

Attributes
  • InstallPath

    temp\java.exe

  • gencode

    6hPE8cPj7vE4

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    java.exe

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

62.33.2.50:2222

Mutex

41aabe8f8c6d7c53ac94c0ce4c6ce249

Attributes
  • reg_key

    41aabe8f8c6d7c53ac94c0ce4c6ce249

  • splitter

    |'|'|

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Windows security bypass 2 TTPs
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • suricata: ET MALWARE Common RAT Connectivity Check Observed

    suricata: ET MALWARE Common RAT Connectivity Check Observed

  • Executes dropped EXE 6 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets file to hidden 1 TTPs

    Modifies file attributes to stop it showing in Explorer etc.

  • Drops startup file 2 IoCs
  • Loads dropped DLL 10 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops autorun.inf file 1 TTPs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\62495c2cfde10b47d1c2cc907822fec4ca4f8b6e51c9216cf1dfdcc454c8a8d5.exe
    "C:\Users\Admin\AppData\Local\Temp\62495c2cfde10b47d1c2cc907822fec4ca4f8b6e51c9216cf1dfdcc454c8a8d5.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1692
    • C:\Users\Admin\AppData\Local\Temp\2.exe
      "C:\Users\Admin\AppData\Local\Temp\2.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1636
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\2.exe" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1996
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\2.exe" +s +h
          4⤵
          • Views/modifies file attributes
          PID:1320
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Views/modifies file attributes
          PID:1172
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
          PID:1664
        • C:\Windows\temp\java.exe
          "C:\Windows\temp\java.exe"
          3⤵
          • Modifies firewall policy service
          • Modifies security service
          • Executes dropped EXE
          • Windows security modification
          • Adds Run key to start application
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:1740
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
            4⤵
              PID:328
            • C:\Windows\explorer.exe
              "C:\Windows\explorer.exe"
              4⤵
                PID:1040
              • C:\Windows\SysWOW64\notepad.exe
                notepad
                4⤵
                  PID:1808
            • C:\Users\Admin\AppData\Local\Temp\1.exe
              "C:\Users\Admin\AppData\Local\Temp\1.exe"
              2⤵
              • Executes dropped EXE
              • Loads dropped DLL
              PID:580
              • C:\Users\Admin\AppData\Local\Temp\svchost.exe
                "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
                3⤵
                • Executes dropped EXE
                • Drops startup file
                • Adds Run key to start application
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: GetForegroundWindowSpam
                • Suspicious use of AdjustPrivilegeToken
                PID:1988
                • C:\Windows\SysWOW64\netsh.exe
                  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\svchost.exe" "svchost.exe" ENABLE
                  4⤵
                    PID:1628
              • C:\Users\Admin\AppData\Local\Temp\3.exe
                "C:\Users\Admin\AppData\Local\Temp\3.exe"
                2⤵
                • Executes dropped EXE
                • Loads dropped DLL
                PID:1168
                • C:\Windows\SysWOW64\schtasks.exe
                  "schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\3.exe" /rl HIGHEST /f
                  3⤵
                  • Creates scheduled task(s)
                  PID:1896
                • C:\Users\Admin\AppData\Roaming\driver\driver.exe
                  "C:\Users\Admin\AppData\Roaming\driver\driver.exe" -d2
                  3⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of SetWindowsHookEx
                  PID:1124
                  • C:\Windows\SysWOW64\schtasks.exe
                    "schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\driver\driver.exe" /rl HIGHEST /f
                    4⤵
                    • Creates scheduled task(s)
                    PID:1596

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Initial Access

            Replication Through Removable Media

            1
            T1091

            Execution

            Scheduled Task

            1
            T1053

            Persistence

            Winlogon Helper DLL

            1
            T1004

            Modify Existing Service

            3
            T1031

            Hidden Files and Directories

            2
            T1158

            Registry Run Keys / Startup Folder

            1
            T1060

            Scheduled Task

            1
            T1053

            Privilege Escalation

            Scheduled Task

            1
            T1053

            Defense Evasion

            Modify Registry

            7
            T1112

            Disabling Security Tools

            2
            T1089

            Hidden Files and Directories

            2
            T1158

            Discovery

            System Information Discovery

            1
            T1082

            Lateral Movement

            Replication Through Removable Media

            1
            T1091

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\1.exe
              Filesize

              49KB

              MD5

              44276fd73f9654eb7aac24712b6678b3

              SHA1

              90adc57a4034c06f46d15cc9774502ca73d4c3b2

              SHA256

              dde17e40dc1453b61185a7f5c10df7dd76b097450f896a0df712b3b3f5683f4b

              SHA512

              1371c82ccd6202eb6359f740fb722cb40a188309d5cd6a743835d995fbb2bb29da9653d7c45f451c5148af275ba03e5bac0a17f4022216c0bc2a587b116eddf6

            • C:\Users\Admin\AppData\Local\Temp\1.exe
              Filesize

              49KB

              MD5

              44276fd73f9654eb7aac24712b6678b3

              SHA1

              90adc57a4034c06f46d15cc9774502ca73d4c3b2

              SHA256

              dde17e40dc1453b61185a7f5c10df7dd76b097450f896a0df712b3b3f5683f4b

              SHA512

              1371c82ccd6202eb6359f740fb722cb40a188309d5cd6a743835d995fbb2bb29da9653d7c45f451c5148af275ba03e5bac0a17f4022216c0bc2a587b116eddf6

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

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

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

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • C:\Users\Admin\AppData\Local\Temp\3.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • C:\Users\Admin\AppData\Local\Temp\3.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • C:\Users\Admin\AppData\Local\Temp\svchost.exe
              Filesize

              49KB

              MD5

              44276fd73f9654eb7aac24712b6678b3

              SHA1

              90adc57a4034c06f46d15cc9774502ca73d4c3b2

              SHA256

              dde17e40dc1453b61185a7f5c10df7dd76b097450f896a0df712b3b3f5683f4b

              SHA512

              1371c82ccd6202eb6359f740fb722cb40a188309d5cd6a743835d995fbb2bb29da9653d7c45f451c5148af275ba03e5bac0a17f4022216c0bc2a587b116eddf6

            • C:\Users\Admin\AppData\Local\Temp\svchost.exe
              Filesize

              49KB

              MD5

              44276fd73f9654eb7aac24712b6678b3

              SHA1

              90adc57a4034c06f46d15cc9774502ca73d4c3b2

              SHA256

              dde17e40dc1453b61185a7f5c10df7dd76b097450f896a0df712b3b3f5683f4b

              SHA512

              1371c82ccd6202eb6359f740fb722cb40a188309d5cd6a743835d995fbb2bb29da9653d7c45f451c5148af275ba03e5bac0a17f4022216c0bc2a587b116eddf6

            • C:\Users\Admin\AppData\Roaming\driver\driver.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • C:\Users\Admin\AppData\Roaming\driver\driver.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • C:\Windows\Temp\java.exe
              Filesize

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • C:\Windows\temp\java.exe
              Filesize

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • \Users\Admin\AppData\Local\Temp\1.exe
              Filesize

              49KB

              MD5

              44276fd73f9654eb7aac24712b6678b3

              SHA1

              90adc57a4034c06f46d15cc9774502ca73d4c3b2

              SHA256

              dde17e40dc1453b61185a7f5c10df7dd76b097450f896a0df712b3b3f5683f4b

              SHA512

              1371c82ccd6202eb6359f740fb722cb40a188309d5cd6a743835d995fbb2bb29da9653d7c45f451c5148af275ba03e5bac0a17f4022216c0bc2a587b116eddf6

            • \Users\Admin\AppData\Local\Temp\2.exe
              Filesize

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • \Users\Admin\AppData\Local\Temp\2.exe
              Filesize

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • \Users\Admin\AppData\Local\Temp\3.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • \Users\Admin\AppData\Local\Temp\3.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • \Users\Admin\AppData\Local\Temp\svchost.exe
              Filesize

              49KB

              MD5

              44276fd73f9654eb7aac24712b6678b3

              SHA1

              90adc57a4034c06f46d15cc9774502ca73d4c3b2

              SHA256

              dde17e40dc1453b61185a7f5c10df7dd76b097450f896a0df712b3b3f5683f4b

              SHA512

              1371c82ccd6202eb6359f740fb722cb40a188309d5cd6a743835d995fbb2bb29da9653d7c45f451c5148af275ba03e5bac0a17f4022216c0bc2a587b116eddf6

            • \Users\Admin\AppData\Roaming\driver\driver.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • \Users\Admin\AppData\Roaming\driver\driver.exe
              Filesize

              344KB

              MD5

              adb2eb09e5abf4b8ba14f026ed7343c4

              SHA1

              cbc506f1723891c458d7ccb3d135dd550a0d926e

              SHA256

              6be293224b4fbd57f391f449aefd1dad303e9b4c7c04da48d762c5a3933497da

              SHA512

              4fafad2f5d0820cdd64f13b95f6f73ea4b1646a64f8999d819a95063c00991c0de59dcc6909ffad58285d7cd430dead515c2f0cc06335226bf053e152520f7e0

            • \Windows\Temp\java.exe
              Filesize

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • \Windows\Temp\java.exe
              Filesize

              690KB

              MD5

              0b5d0f84291ee7f1839be29234bfeb7e

              SHA1

              4cf56760fe279da2337cb7ee6184297dafee805a

              SHA256

              2a6eec17d15b5a46589afad617aa7b141e0b087baf6ae82eac2e9c1c896e59bf

              SHA512

              3683dcfc41e368382a8308ed3fc8e165c613badcc200016b58ec2468cc07c4b74321e15e0ea133d13695c25bec09d4e8eaa8f6a6164c6536118ae6e10fdc9a18

            • memory/580-67-0x0000000000000000-mapping.dmp
            • memory/580-87-0x0000000074190000-0x000000007473B000-memory.dmp
              Filesize

              5.7MB

            • memory/1124-91-0x0000000000000000-mapping.dmp
            • memory/1124-94-0x0000000000B50000-0x0000000000BAA000-memory.dmp
              Filesize

              360KB

            • memory/1168-82-0x0000000000060000-0x00000000000BA000-memory.dmp
              Filesize

              360KB

            • memory/1168-72-0x0000000000000000-mapping.dmp
            • memory/1172-64-0x0000000000000000-mapping.dmp
            • memory/1320-63-0x0000000000000000-mapping.dmp
            • memory/1596-96-0x0000000000000000-mapping.dmp
            • memory/1628-103-0x0000000000000000-mapping.dmp
            • memory/1636-57-0x0000000000000000-mapping.dmp
            • memory/1664-66-0x0000000000000000-mapping.dmp
            • memory/1692-54-0x00000000763E1000-0x00000000763E3000-memory.dmp
              Filesize

              8KB

            • memory/1740-79-0x0000000000000000-mapping.dmp
            • memory/1808-84-0x0000000000000000-mapping.dmp
            • memory/1896-88-0x0000000000000000-mapping.dmp
            • memory/1988-98-0x0000000000000000-mapping.dmp
            • memory/1988-102-0x00000000704E0000-0x0000000070A8B000-memory.dmp
              Filesize

              5.7MB

            • memory/1996-61-0x0000000000000000-mapping.dmp
            • memory/2028-62-0x0000000000000000-mapping.dmp