Analysis

  • max time kernel
    129s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 20:44

General

  • Target

    b3fa952967142383572df3400a9041a5f38982342cbb632f3ad0e6c7ac6105ea.exe

  • Size

    1.5MB

  • MD5

    175d4a702cd0982cb40ea858c2f93441

  • SHA1

    703f6b9ac5e02e628473e5c2314fc4ac9adb481a

  • SHA256

    b3fa952967142383572df3400a9041a5f38982342cbb632f3ad0e6c7ac6105ea

  • SHA512

    b55c0e7fb1911044837b2f9f0aabb41b3da5252e5fee99ffa50c8241ce93b5be98dcc05dde08519bf95adf12640df99d6c75dad7cdc96a3ba68907db03990c88

Malware Config

Extracted

Family

darkcomet

Botnet

Runescape

C2

mrsnickers03.no-ip.biz:340

Mutex

DC_MUTEX-6ZFK11A

Attributes
  • gencode

    uNwew4gojxtu

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Executes dropped EXE 3 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b3fa952967142383572df3400a9041a5f38982342cbb632f3ad0e6c7ac6105ea.exe
    "C:\Users\Admin\AppData\Local\Temp\b3fa952967142383572df3400a9041a5f38982342cbb632f3ad0e6c7ac6105ea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Windows\SysWOW64\svchost.exe
      "C:\Windows\system32\svchost.exe"
      2⤵
        PID:3716
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 92
          3⤵
          • Program crash
          PID:508
      • C:\Users\Admin\AppData\Local\Temp\b3fa952967142383572df3400a9041a5f38982342cbb632f3ad0e6c7ac6105ea.exe
        "C:\Users\Admin\AppData\Local\Temp\b3fa952967142383572df3400a9041a5f38982342cbb632f3ad0e6c7ac6105ea.exe"
        2⤵
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3112
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\EPMLP.bat" "
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:184
          • C:\Windows\SysWOW64\reg.exe
            REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "java" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\IDM\ichader.exe" /f
            4⤵
            • Adds Run key to start application
            PID:2416
        • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
          "C:\Users\Admin\AppData\Roaming\IDM\ichader.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1516
          • C:\Windows\SysWOW64\svchost.exe
            "C:\Windows\system32\svchost.exe"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of SetWindowsHookEx
            PID:3888
          • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
            "C:\Users\Admin\AppData\Roaming\IDM\ichader.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3900
          • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
            "C:\Users\Admin\AppData\Roaming\IDM\ichader.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:4008

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\EPMLP.bat
      MD5

      92353035f01403e26aa2ff51c3963238

      SHA1

      d13f167c73bfce23a2deab8ce7c4ce9f78759ff4

      SHA256

      2e72a8542f8f809bfb1e4adfb481c7c5e6dc00dda7970c74692ba8d83ea0a870

      SHA512

      74560e33477caae3c7bc13914e4ae3c6911bbcfe257b2833155c236a158db0aca17478beb9d97f648ff1ea566005260f511361771c74203195107f4e82cce7df

    • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
      MD5

      e92ba6ee7a729451ed54815c40f8a744

      SHA1

      3afd92af18686086047d11d4545b885eb964dbbd

      SHA256

      891fb91c8411f1e38146387805d376b3b7c5af0a08b3e5994162ce12d5ffcfed

      SHA512

      0a4a08a185c1babfe669623b938a06144d8f4f75a81d4e3f001b3d19c763f5bc1d06d43a1f2d3db9b37a0b73c0ff3eb6eacb460c84d02f07087118f2ebfdf9c3

    • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
      MD5

      e92ba6ee7a729451ed54815c40f8a744

      SHA1

      3afd92af18686086047d11d4545b885eb964dbbd

      SHA256

      891fb91c8411f1e38146387805d376b3b7c5af0a08b3e5994162ce12d5ffcfed

      SHA512

      0a4a08a185c1babfe669623b938a06144d8f4f75a81d4e3f001b3d19c763f5bc1d06d43a1f2d3db9b37a0b73c0ff3eb6eacb460c84d02f07087118f2ebfdf9c3

    • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
      MD5

      e92ba6ee7a729451ed54815c40f8a744

      SHA1

      3afd92af18686086047d11d4545b885eb964dbbd

      SHA256

      891fb91c8411f1e38146387805d376b3b7c5af0a08b3e5994162ce12d5ffcfed

      SHA512

      0a4a08a185c1babfe669623b938a06144d8f4f75a81d4e3f001b3d19c763f5bc1d06d43a1f2d3db9b37a0b73c0ff3eb6eacb460c84d02f07087118f2ebfdf9c3

    • C:\Users\Admin\AppData\Roaming\IDM\ichader.exe
      MD5

      e92ba6ee7a729451ed54815c40f8a744

      SHA1

      3afd92af18686086047d11d4545b885eb964dbbd

      SHA256

      891fb91c8411f1e38146387805d376b3b7c5af0a08b3e5994162ce12d5ffcfed

      SHA512

      0a4a08a185c1babfe669623b938a06144d8f4f75a81d4e3f001b3d19c763f5bc1d06d43a1f2d3db9b37a0b73c0ff3eb6eacb460c84d02f07087118f2ebfdf9c3

    • memory/184-11-0x0000000000000000-mapping.dmp
    • memory/508-10-0x0000000004D80000-0x0000000004D81000-memory.dmp
      Filesize

      4KB

    • memory/1516-14-0x0000000000000000-mapping.dmp
    • memory/1516-17-0x0000000073520000-0x00000000735B3000-memory.dmp
      Filesize

      588KB

    • memory/2416-13-0x0000000000000000-mapping.dmp
    • memory/3112-7-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3112-6-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3112-4-0x0000000000400000-0x000000000040B000-memory.dmp
      Filesize

      44KB

    • memory/3112-5-0x00000000004085D0-mapping.dmp
    • memory/3716-3-0x000000000040B000-mapping.dmp
    • memory/3888-23-0x0000000000400000-0x000000000040C000-memory.dmp
      Filesize

      48KB

    • memory/3888-22-0x0000000000400000-0x000000000040C000-memory.dmp
      Filesize

      48KB

    • memory/3888-21-0x000000000040B000-mapping.dmp
    • memory/3888-20-0x0000000000400000-0x000000000040C000-memory.dmp
      Filesize

      48KB

    • memory/3900-27-0x00000000004085D0-mapping.dmp
    • memory/3900-29-0x0000000073520000-0x00000000735B3000-memory.dmp
      Filesize

      588KB

    • memory/4008-30-0x0000000000400000-0x00000000004B7000-memory.dmp
      Filesize

      732KB

    • memory/4008-31-0x00000000004B5210-mapping.dmp
    • memory/4008-34-0x0000000073520000-0x00000000735B3000-memory.dmp
      Filesize

      588KB

    • memory/4008-36-0x0000000000400000-0x00000000004B7000-memory.dmp
      Filesize

      732KB

    • memory/4008-39-0x0000000000400000-0x00000000004B7000-memory.dmp
      Filesize

      732KB