Analysis

  • max time kernel
    60s
  • max time network
    60s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/04/2025, 19:21

General

  • Target

    file3.exe

  • Size

    1.0MB

  • MD5

    784eb8175f6a13be07633f2deb13a7ef

  • SHA1

    a369bf9b6e3dc4af534b0980d88af246ef2a980b

  • SHA256

    751b84526549ce5185de83cc3e7baf3e9019ba2bb51160d0a7890b82b2807d5f

  • SHA512

    7238874a886682ba108e5bed8e20350038dc24c630717ac52b1e38322fe124f4f9b1c40e6ff50fb94df6108aa371d7a0cf4c76d9e77a05700cde600e989dbd5c

  • SSDEEP

    24576:zm+KZ1xuVVjfFoynPaVBUR8f+kN10EB4gGApfkxI:zm+aQDgok30JjAL

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

jvjv2044duck33.duckdns.org:8808

Mutex

0fC8zJGwBBNm

Attributes
  • delay

    3

  • install

    true

  • install_file

    csrss.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

darkcomet

Botnet

Guest16

C2

jvjv2044duck33.duckdns.org:1604

Mutex

DC_MUTEX-VSPAW1U

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    WsSXJDBChA4p

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Nanocore family
  • Async RAT payload 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 13 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 24 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 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 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file3.exe
    "C:\Users\Admin\AppData\Local\Temp\file3.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5496
    • C:\Users\Admin\AppData\Roaming\ULTIME MULTIHACK REBORN.EXE
      "C:\Users\Admin\AppData\Roaming\ULTIME MULTIHACK REBORN.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1464
    • C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE
      "C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2968
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3180
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2152
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4512
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Roaming" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2364
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4544
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:3624
    • C:\Users\Admin\AppData\Roaming\WINDOWS DEFENDER.EXE
      "C:\Users\Admin\AppData\Roaming\WINDOWS DEFENDER.EXE"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2776
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "csrss" /tr '"C:\Users\Admin\AppData\Roaming\csrss.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        PID:6060
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "csrss" /tr '"C:\Users\Admin\AppData\Roaming\csrss.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2908
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6774.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        PID:936
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3020
        • C:\Users\Admin\AppData\Roaming\csrss.exe
          "C:\Users\Admin\AppData\Roaming\csrss.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:4316
    • C:\Users\Admin\AppData\Roaming\WINDOWS SECURITY NANO.EXE
      "C:\Users\Admin\AppData\Roaming\WINDOWS SECURITY NANO.EXE"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4552
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:848
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4736
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4904
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4620
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Program Files (x86)\WAN Manager\wanmgr.exe
    1⤵
      PID:2672
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      1⤵
        PID:5148
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:1612
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        1⤵
          PID:5944
          • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
            C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
            2⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:3616
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          1⤵
            PID:5544
            • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              2⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:392
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
            1⤵
              PID:684
              • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
                C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
                2⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                PID:4380
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              1⤵
                PID:5500
                • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
                  C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
                  2⤵
                  • Executes dropped EXE
                  • System Location Discovery: System Language Discovery
                  PID:4296

              Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              • C:\Users\Admin\AppData\Local\Temp\tmp6774.tmp.bat

                Filesize

                149B

                MD5

                1b9ca2557c06fc4301eee90c9132be58

                SHA1

                fb45bd3026551636649331f8451c4edf3363a5de

                SHA256

                a0a63d4f615cd025620b881ef2b052a53700e3f3574dd8dcd73129b161c2221f

                SHA512

                75e9bcd7f13ba0c6dc3c99ca37bd16b40104875beae43c232d5f96e26531091608179c210a48432c555682b9958bbc4c7feab41f6c26fea3c2dbc5b9310d0f26

              • C:\Users\Admin\AppData\Roaming\ULTIME MULTIHACK REBORN.EXE

                Filesize

                86KB

                MD5

                0739a4b039910c9ecc48661e25279e6e

                SHA1

                02bf3b0265850bc13e85ac9bb421b88b6babbcaf

                SHA256

                9df65940d3f2230b276e9ee989f15a94855e07cf2aa04210353f7a9e9a62db4a

                SHA512

                e8a8876f4cfc2657e2b355b288fb8386e40131aeacc18aba1036ea5e60cf9a571f8da4ead987751db16fba5054d50b3dac9c399e5dff38fc64bf22c4fb3cb92f

              • C:\Users\Admin\AppData\Roaming\VLC MEDIA PLAYE.EXE

                Filesize

                658KB

                MD5

                de8155dd13365377edb85032384b10cb

                SHA1

                cb23083134afbf04d2fda5981cf4ac05b65afe86

                SHA256

                ad4b6815581ce764ee631e5d2cc588fe0b5bb607de8499d21316544940db224b

                SHA512

                8cbcca98eef2417932d1bb6acb59c72ca1944b6480551dee372ae2bc50a3f66bfc3cfd834f932b36e63df9b930febec9f1e34a0d54b162e126e91c55a2d95d6a

              • C:\Users\Admin\AppData\Roaming\WINDOWS DEFENDER.EXE

                Filesize

                47KB

                MD5

                96da127f30d555f809b5a781eeadb5d4

                SHA1

                6742daf92406b52d5b98fcf3c8b96aca2f691404

                SHA256

                f2e3e68a10f9f07b031e2fd3d7d73553ee4639a5e1c2a0775ac0a2ddbeff5e53

                SHA512

                2c7f2d0bfb65e532f1c1068a93f92c2cd17682de70d8ee84cab47d3b3e80f87d97d16e0d41dee027f3381e5abe9d19f8b2604da7769d36243695be1d79b3be52

              • C:\Users\Admin\AppData\Roaming\WINDOWS SECURITY NANO.EXE

                Filesize

                209KB

                MD5

                172214b69dfbf053c83ff8e6b70842bc

                SHA1

                02e321757925f21b18c96d2e23d6e9a755df59ab

                SHA256

                da01598ba05a9467fa7cf76d9d212df75886eeeea30a633654dcdf29d8be90d9

                SHA512

                6b02e7dffd64a8cc7b83e7dcbfbd8d4dfb99f7cc13d5056ffb00efb51f7cf0431bb270b8afa394dbeb4e7b3558261c0ea6bd3a542bd82afd9fbc9c5227f83a42

              • memory/392-131-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/1464-83-0x0000000005000000-0x0000000005056000-memory.dmp

                Filesize

                344KB

              • memory/1464-123-0x000000007347E000-0x000000007347F000-memory.dmp

                Filesize

                4KB

              • memory/1464-43-0x0000000004C10000-0x0000000004CAC000-memory.dmp

                Filesize

                624KB

              • memory/1464-41-0x00000000003F0000-0x000000000040C000-memory.dmp

                Filesize

                112KB

              • memory/1464-49-0x0000000005280000-0x0000000005824000-memory.dmp

                Filesize

                5.6MB

              • memory/1464-50-0x0000000004D70000-0x0000000004E02000-memory.dmp

                Filesize

                584KB

              • memory/1464-36-0x000000007347E000-0x000000007347F000-memory.dmp

                Filesize

                4KB

              • memory/1464-52-0x0000000004D10000-0x0000000004D1A000-memory.dmp

                Filesize

                40KB

              • memory/1612-125-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/2776-47-0x0000000073470000-0x0000000073C20000-memory.dmp

                Filesize

                7.7MB

              • memory/2776-40-0x00000000005D0000-0x00000000005E2000-memory.dmp

                Filesize

                72KB

              • memory/2776-118-0x0000000073470000-0x0000000073C20000-memory.dmp

                Filesize

                7.7MB

              • memory/2968-112-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/2968-48-0x0000000002160000-0x0000000002161000-memory.dmp

                Filesize

                4KB

              • memory/3616-128-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/3624-111-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/4296-138-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/4380-134-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/4544-51-0x0000000000E20000-0x0000000000E21000-memory.dmp

                Filesize

                4KB

              • memory/4620-110-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/4736-126-0x0000000000400000-0x00000000004B2000-memory.dmp

                Filesize

                712KB

              • memory/4904-106-0x0000000000B30000-0x0000000000B31000-memory.dmp

                Filesize

                4KB