Analysis

  • max time kernel
    155s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/02/2024, 02:04

General

  • Target
    9caad1da32f5b2fb837742a4b262f682.exe
  • Size 1.3MB
  • Sample240215-chmaxseg87
  • SHA256 17c60c8a88a849f2b1dfc511ddaf8baac98d0de2e22b30e4e7859be8ac80e6d9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • darkcomet

Botnet
  • BitchFuck

C2
  • niggerbop.zapto.org:1604

Mutex
  • DC_MUTEX-YX8YHVA

Attributes
  • gencode

    5mpeSBMyKRqf

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

Signatures

  • Darkcomet

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 13 IoCs
  • Adds Run key to start application 2 TTPs 7 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9caad1da32f5b2fb837742a4b262f682.exe
    "C:\Users\Admin\AppData\Local\Temp\9caad1da32f5b2fb837742a4b262f682.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\caca.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4896
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe "C:\Users\Admin\AppData\Local\Temp\invs.vbs" "C:\Users\Admin\AppData\Local\Temp\caca2.bat
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:5084
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\caca2.bat" "
          4⤵
          • Drops startup file
          PID:2908
    • C:\Windows\Temp\nminssk.exe
      C:\Windows\Temp\nminssk.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4676
    • C:\Windows\Temp\nminssk.exe
      C:\Windows\Temp\nminssk.exe
      2⤵
        PID:4904
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\per.bat" "
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4484
        • C:\Windows\SysWOW64\PING.EXE
          ping 1.1.1.1 -n 1 -w 3000
          3⤵
          • Runs ping.exe
          PID:3464
        • C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe
          "C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4720
          • C:\Windows\Temp\nminssk.exe
            C:\Windows\Temp\nminssk.exe
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            PID:2932
          • C:\Windows\Temp\nminssk.exe
            C:\Windows\Temp\nminssk.exe
            4⤵
              PID:4072
          • C:\Windows\SysWOW64\PING.EXE
            ping 1.1.1.1 -n 1 -w 3000
            3⤵
            • Runs ping.exe
            PID:3584
          • C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe
            "C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe"
            3⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3812
            • C:\Windows\Temp\nminssk.exe
              C:\Windows\Temp\nminssk.exe
              4⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              PID:4536
            • C:\Windows\Temp\nminssk.exe
              C:\Windows\Temp\nminssk.exe
              4⤵
                PID:2356
            • C:\Windows\SysWOW64\PING.EXE
              ping 1.1.1.1 -n 1 -w 3000
              3⤵
              • Runs ping.exe
              PID:4216
            • C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe
              "C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe"
              3⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetThreadContext
              • Suspicious behavior: EnumeratesProcesses
              PID:4404
              • C:\Windows\Temp\nminssk.exe
                C:\Windows\Temp\nminssk.exe
                4⤵
                • Executes dropped EXE
                PID:4172
              • C:\Windows\Temp\nminssk.exe
                C:\Windows\Temp\nminssk.exe
                4⤵
                  PID:1860
              • C:\Windows\SysWOW64\PING.EXE
                ping 1.1.1.1 -n 1 -w 3000
                3⤵
                • Runs ping.exe
                PID:2248
              • C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe
                "C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe"
                3⤵
                • Executes dropped EXE
                • Adds Run key to start application
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                PID:4428
                • C:\Windows\Temp\nminssk.exe
                  C:\Windows\Temp\nminssk.exe
                  4⤵
                  • Executes dropped EXE
                  PID:4888
                • C:\Windows\Temp\nminssk.exe
                  C:\Windows\Temp\nminssk.exe
                  4⤵
                    PID:2512
                • C:\Windows\SysWOW64\PING.EXE
                  ping 1.1.1.1 -n 1 -w 3000
                  3⤵
                  • Runs ping.exe
                  PID:3456
                • C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe
                  "C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe"
                  3⤵
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Suspicious use of SetThreadContext
                  • Suspicious behavior: EnumeratesProcesses
                  PID:3356
                  • C:\Windows\Temp\nminssk.exe
                    C:\Windows\Temp\nminssk.exe
                    4⤵
                    • Executes dropped EXE
                    PID:4680
                  • C:\Windows\Temp\nminssk.exe
                    C:\Windows\Temp\nminssk.exe
                    4⤵
                      PID:4840
                  • C:\Windows\SysWOW64\PING.EXE
                    ping 1.1.1.1 -n 1 -w 3000
                    3⤵
                    • Runs ping.exe
                    PID:520
                  • C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe
                    "C:\Users\Admin\AppData\Local\Temp\nminssk32 .exe"
                    3⤵
                    • Executes dropped EXE
                    • Adds Run key to start application
                    • Suspicious use of SetThreadContext
                    • Suspicious behavior: EnumeratesProcesses
                    PID:3872
                    • C:\Windows\Temp\nminssk.exe
                      C:\Windows\Temp\nminssk.exe
                      4⤵
                      • Executes dropped EXE
                      PID:4348
                    • C:\Windows\Temp\nminssk.exe
                      C:\Windows\Temp\nminssk.exe
                      4⤵
                        PID:2056

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

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                      Downloads

                      nminssk32 .exe.log

                      • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\nminssk32 .exe.log
                      • Size 588B
                      • SHA256 43ed2be236e2f945c0bcb46697a414bd57a0cc324d431893f61a13eeee72f6ba
                      • MD5 SHA1 SHA512

                      caca.bat

                      • Path C:\Users\Admin\AppData\Local\Temp\caca.bat
                      • Size 47B
                      • SHA256 eccc9f27214ff49689c1f597c0d3d3a3e45391064fd0baa9b5e0e03931b7822b
                      • MD5 SHA1 SHA512

                      caca2.bat

                      • Path C:\Users\Admin\AppData\Local\Temp\caca2.bat
                      • Size 153B
                      • SHA256 7a3ced047bdae6a58da9ff34113af37f40dfc28190cc190870098f06b2415fc4
                      • MD5 SHA1 SHA512

                      invs.vbs

                      • Path C:\Users\Admin\AppData\Local\Temp\invs.vbs
                      • Size 78B
                      • SHA256 20a98a7e6e137bb1b9bd5ef6911a479cb8eac925b80d6db4e70b19f62a40cce2
                      • MD5 SHA1 SHA512

                      per.bat

                      • Path C:\Users\Admin\AppData\Local\Temp\per.bat
                      • Size 112B
                      • SHA256 38da0f64f9ac05ecc9eb39d7a57acc1bc37986f646afdb78ccde8780a5b86095
                      • MD5 SHA1 SHA512

                      rundll32-.txt

                      • Path C:\Users\Admin\AppData\Local\Temp\rundll32-.txt
                      • Size 1.3MB
                      • SHA256 17c60c8a88a849f2b1dfc511ddaf8baac98d0de2e22b30e4e7859be8ac80e6d9
                      • MD5 SHA1 SHA512 SSDEEP

                      nminssk.exe

                      • Path C:\Windows\Temp\nminssk.exe
                      • Size 1.1MB
                      • SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/1676-0-0x00000000748F0000-0x0000000074EA1000-memory.dmp

                      memory/1676-34-0x00000000748F0000-0x0000000074EA1000-memory.dmp

                      memory/1676-1-0x00000000748F0000-0x0000000074EA1000-memory.dmp

                      memory/1676-2-0x0000000001BF0000-0x0000000001C00000-memory.dmp

                      memory/1676-40-0x00000000748F0000-0x0000000074EA1000-memory.dmp

                      memory/2932-52-0x0000000002120000-0x0000000002121000-memory.dmp

                      memory/2932-51-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/3356-106-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3356-116-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3356-105-0x00000000006C0000-0x00000000006D0000-memory.dmp

                      memory/3356-104-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3812-63-0x0000000000FB0000-0x0000000000FC0000-memory.dmp

                      memory/3812-62-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3812-64-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3812-74-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3872-119-0x0000000000D60000-0x0000000000D70000-memory.dmp

                      memory/3872-118-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/3872-120-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4172-83-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4172-84-0x0000000000680000-0x0000000000681000-memory.dmp

                      memory/4348-127-0x00000000007A0000-0x00000000007A1000-memory.dmp

                      memory/4348-126-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4404-88-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4404-78-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4404-76-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4404-77-0x0000000000980000-0x0000000000990000-memory.dmp

                      memory/4428-102-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4428-92-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4428-90-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4428-91-0x0000000000FA0000-0x0000000000FB0000-memory.dmp

                      memory/4536-69-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4536-70-0x00000000022D0000-0x00000000022D1000-memory.dmp

                      memory/4676-114-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-73-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-129-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-16-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-86-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-87-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-125-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-55-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-54-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-20-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-22-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-24-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-100-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-101-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-72-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-26-0x00000000022C0000-0x00000000022C1000-memory.dmp

                      memory/4676-27-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-33-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-43-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4676-115-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4680-112-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4680-111-0x0000000002190000-0x0000000002191000-memory.dmp

                      memory/4720-44-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4720-45-0x00000000011F0000-0x0000000001200000-memory.dmp

                      memory/4720-46-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4720-56-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4720-57-0x00000000011F0000-0x0000000001200000-memory.dmp

                      memory/4720-59-0x0000000074860000-0x0000000074E11000-memory.dmp

                      memory/4888-98-0x0000000000400000-0x00000000004B5000-memory.dmp

                      memory/4888-97-0x0000000002180000-0x0000000002181000-memory.dmp