Analysis

  • max time kernel
    60s
  • max time network
    60s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/04/2025, 19:21

General

  • Target

    file2.exe

  • Size

    968KB

  • MD5

    8e8c0b5bf7b262756a59095da213ee90

  • SHA1

    e3a84452231879057925e565a2f6592cb8e2ebdd

  • SHA256

    047ab1b39a89a4bf9cb51c810dc7a4d62e3f848df566ec9884393c60d0988039

  • SHA512

    1bde8ffa4fea4539ff889ce0625eb0caed5250881eb8f56456cc092610550948552ecdff0c3c786df97e592399fc3084c4e0fa798cb916860349fbbe5a5c38db

  • SSDEEP

    24576:43Z1xuVVjfFoynPaVBUR8f+kN10EB4gGApfkxI:4pQDgok30JjAL

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

jvjv2044duck33.duckdns.org:54984

Mutex

2fda0c27-65af-4514-b648-0066e7bbf615

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    jvjv2044duck33.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2025-01-27T20:01:11.197098036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54984

  • default_group

    Default

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    2fda0c27-65af-4514-b648-0066e7bbf615

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    jvjv2044duck33.duckdns.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

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 4 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\file2.exe
    "C:\Users\Admin\AppData\Local\Temp\file2.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6008
    • 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:900
      • 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
        • Suspicious use of WriteProcessMemory
        PID:4224
        • 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:4844
      • 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:5600
        • 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:4836
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1580
      • 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:4752
    • 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:5608
      • 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:3068
        • 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:4372
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp90C6.tmp.bat""
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2576
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4396
        • 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:5436
    • 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
      PID:1820
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3728
    • 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:4744
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4564
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    1⤵
      PID:3476
      • 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
        PID:64
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Program Files (x86)\SMTP Service\smtpsvc.exe
      1⤵
        PID:396
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        1⤵
          PID:5012
          • 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:5244
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          1⤵
            PID:2912
            • 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:6068
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
            1⤵
              PID:1216
              • 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:5960
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
              1⤵
                PID:5784
                • 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:2876
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
                1⤵
                  PID:3576
                  • 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:5136
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /c C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
                  1⤵
                    PID:5604
                    • 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:636

                  Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\tmp90C6.tmp.bat

                    Filesize

                    149B

                    MD5

                    1a3e6fd26750be0bb505d0be0dea81e9

                    SHA1

                    38a8dfd44cbd4ebc596e1356620214c2593c436e

                    SHA256

                    1887a8ba13ff17bd6dcd8cb32bc3e1a127281b7a0ca6ad112212f3bdbcc21071

                    SHA512

                    50135e31d18a562f1e04f0e287948c267a50249c8ec6a528901e0e283b15536a2eb2af547738c3c8191fe25785511c30947d5ad3519d34435335681f8306a6d3

                  • 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/64-96-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/636-126-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/900-28-0x0000000002160000-0x0000000002161000-memory.dmp

                    Filesize

                    4KB

                  • memory/900-99-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/1580-37-0x0000000000F40000-0x0000000000F41000-memory.dmp

                    Filesize

                    4KB

                  • memory/1820-111-0x0000000071E00000-0x00000000723B1000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/1820-86-0x0000000071E00000-0x00000000723B1000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/1820-36-0x0000000071E00000-0x00000000723B1000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/1820-35-0x0000000071E02000-0x0000000071E03000-memory.dmp

                    Filesize

                    4KB

                  • memory/1820-112-0x0000000071E00000-0x00000000723B1000-memory.dmp

                    Filesize

                    5.7MB

                  • memory/1820-110-0x0000000071E02000-0x0000000071E03000-memory.dmp

                    Filesize

                    4KB

                  • memory/2876-121-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/4564-90-0x0000000000680000-0x0000000000681000-memory.dmp

                    Filesize

                    4KB

                  • memory/4744-115-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/4752-93-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/5136-124-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/5244-98-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/5608-34-0x0000000000C10000-0x0000000000C22000-memory.dmp

                    Filesize

                    72KB

                  • memory/5608-101-0x00000000054A0000-0x000000000553C000-memory.dmp

                    Filesize

                    624KB

                  • memory/5608-29-0x00000000738AE000-0x00000000738AF000-memory.dmp

                    Filesize

                    4KB

                  • memory/5960-118-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB

                  • memory/6068-114-0x0000000000400000-0x00000000004B2000-memory.dmp

                    Filesize

                    712KB