Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    06-11-2020 11:46

General

  • Target

    58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453.exe

  • Size

    752KB

  • MD5

    72cb9f5693c7dff79fecd8cdb3880ea8

  • SHA1

    9b7ac2f7dd26ae17c0048f630286f13689f195bb

  • SHA256

    58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

  • SHA512

    06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

Malware Config

Extracted

Family

darkcomet

Botnet

2020NOV5

C2

sandyclark255.hopto.org:1605

Mutex

DC_MUTEX-XRQ89VC

Attributes
  • InstallPath

    skypew.exe

  • gencode

    pZP6alYpcpSq

  • install

    true

  • offline_keylogger

    true

  • password

    hhhhhh

  • persistence

    true

  • reg_key

    skype

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453.exe
    "C:\Users\Admin\AppData\Local\Temp\58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
      "C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe"
      2⤵
      • Executes dropped EXE
      PID:1592
    • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
      "C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1580
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
          PID:592
        • C:\Users\Admin\Documents\skypew.exe
          "C:\Users\Admin\Documents\skypew.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:936
          • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
            "C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:524
            • C:\Windows\SysWOW64\notepad.exe
              notepad
              5⤵
                PID:1540

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Winlogon Helper DLL

      1
      T1004

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      2
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • C:\Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • C:\Users\Admin\Documents\skypew.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • C:\Users\Admin\Documents\skypew.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • \Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • \Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • \Users\Admin\AppData\Local\Temp\sduiHi6p255fGT7C\svehoste.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • \Users\Admin\Documents\skypew.exe
        MD5

        72cb9f5693c7dff79fecd8cdb3880ea8

        SHA1

        9b7ac2f7dd26ae17c0048f630286f13689f195bb

        SHA256

        58a2fa4a15e85f2cba62f30a84220cda8dffc43193acb8aa5cd83c4d40d28453

        SHA512

        06b040c5766c6d4639d77130ca4653dc7083d9af47d25d7a0975958d1412d9606ba8cc2b20b67594355b60c1f9d2ce1a8b8adbc323f65276c30e7e56b03786f5

      • memory/524-29-0x000000000048F888-mapping.dmp
      • memory/524-31-0x0000000000400000-0x00000000004C2000-memory.dmp
        Filesize

        776KB

      • memory/592-21-0x0000000000190000-0x0000000000191000-memory.dmp
        Filesize

        4KB

      • memory/592-22-0x0000000000000000-mapping.dmp
      • memory/592-20-0x0000000000000000-mapping.dmp
      • memory/936-24-0x0000000000000000-mapping.dmp
      • memory/1540-33-0x0000000000000000-mapping.dmp
      • memory/1540-34-0x0000000000210000-0x0000000000211000-memory.dmp
        Filesize

        4KB

      • memory/1540-35-0x0000000000000000-mapping.dmp
      • memory/1580-18-0x0000000000400000-0x00000000004C2000-memory.dmp
        Filesize

        776KB

      • memory/1580-16-0x000000000048F888-mapping.dmp
      • memory/1580-15-0x0000000000400000-0x00000000004C2000-memory.dmp
        Filesize

        776KB

      • memory/1704-0-0x0000000023370000-0x0000000023372000-memory.dmp
        Filesize

        8KB

      • memory/1704-4-0x0000000035070000-0x0000000036870000-memory.dmp
        Filesize

        24.0MB

      • memory/1704-1-0x0000000026370000-0x0000000026372000-memory.dmp
        Filesize

        8KB