Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/02/2024, 14:41

General

  • Target
    D0B86CAE284BE980712F0DB432A66DAD.exe
  • Size 1.2MB
  • Sample240217-r2eshsgd76
  • SHA256 64f7f22452241592c6dc0e2c8e0f2cf44b52da13f9330e8c73211eb8e2d27906
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • december2n.duckdns.org:64418

  • december2nd.ddns.net:64418

Mutex
  • d334376c-c2dc-4ef6-ba5b-7e6bd3ad949e

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2nd.ddns.net

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2023-11-18T21:10:07.370333236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    64418

  • default_group

    NO GREE

  • 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

    d334376c-c2dc-4ef6-ba5b-7e6bd3ad949e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2n.duckdns.org

  • primary_dns_server

  • 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

Signatures

  • NanoCore

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 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).

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\D0B86CAE284BE980712F0DB432A66DAD.exe
    "C:\Users\Admin\AppData\Local\Temp\D0B86CAE284BE980712F0DB432A66DAD.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4564
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xdqd.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3324
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ipconfig /release
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4172
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /release
          4⤵
          • Gathers network information
          PID:1640
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c vfbiudj.xl usik.ppt
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:908
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\vfbiudj.xl
          vfbiudj.xl usik.ppt
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4804
          • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
            "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Checks whether UAC is enabled
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4612
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7ABE.tmp"
              6⤵
              • Creates scheduled task(s)
              PID:528
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7B1C.tmp"
              6⤵
              • Creates scheduled task(s)
              PID:1240
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ipconfig /renew
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3272
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /renew
          4⤵
          • Gathers network information
          PID:4888

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        bagt.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bagt.msc
        • Size 533B
        • SHA256 7863fa86542a638b88d96599586c257191db167ff16803ede78163f10b6c95dd
        • MD5 SHA1 SHA512

        bbcxiqlb.pdf

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bbcxiqlb.pdf
        • Size 562B
        • SHA256 60e2c0a5d86908b9d5850d35154c17b34a71644c46dd00ac4f77d386a8897d2a
        • MD5 SHA1 SHA512

        bhbpp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bhbpp.dll
        • Size 596B
        • SHA256 e1a2e4dc7c09e270ae219cfd9695a993ef2e21906337a6493dce1ebe1eb88a80
        • MD5 SHA1 SHA512

        bjlb.pdf

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bjlb.pdf
        • Size 528B
        • SHA256 e9d5944646554ea40cc4301589bf1b5555d9cae1aea8cb8dedb2f2502569fd03
        • MD5 SHA1 SHA512

        craa.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\craa.ppt
        • Size 541B
        • SHA256 83552edff89fa68429b308e4a77d800735a33cb9bc61a867f3be8c16dc174a25
        • MD5 SHA1 SHA512

        enoggw.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\enoggw.exe
        • Size 569B
        • SHA256 4060726dd1e5f4940fb37e73cfef97460c04ade9c07bc06ee6d03926e209ef73
        • MD5 SHA1 SHA512

        fgqaj.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\fgqaj.msc
        • Size 634B
        • SHA256 437f05ac50000a3e3c2269dbd198e38acc899bf7cd2a6d55808229034b9766a8
        • MD5 SHA1 SHA512

        funrmpo.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\funrmpo.dat
        • Size 618B
        • SHA256 fb10ae9b8a457513ae5b01335120f2f5f0d100e0c2648cd898409b2b736771df
        • MD5 SHA1 SHA512

        ggmofe.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\ggmofe.icm
        • Size 547B
        • SHA256 2ccc2eff5c7e8e68a2a3c7676b08d8398194be3350bfbc959a432c5ce3fdb715
        • MD5 SHA1 SHA512

        hwfaaxqh.jpg

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\hwfaaxqh.jpg
        • Size 584B
        • SHA256 634721ea015d1f777e2f00223e4223872cc9d542ff5951a47923d61c58cec65d
        • MD5 SHA1 SHA512

        jetgjwnnte.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\jetgjwnnte.icm
        • Size 578B
        • SHA256 becfccb451748c9303c7f2eba6094d665ea19317e3c6b8a728e018f8e9213dca
        • MD5 SHA1 SHA512

        kocwfbppw.docx

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\kocwfbppw.docx
        • Size 526B
        • SHA256 fe821e618d48a12bd3f7fdcf3bdafc0939e9846af491732bbe3a968585edd0d1
        • MD5 SHA1 SHA512

        kofwdhnc.3gp

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\kofwdhnc.3gp
        • Size 574B
        • SHA256 0a4f615911ed9e2ee34bfd765b2db8ea6c55f7e57c64b59628853b7ebca9ec22
        • MD5 SHA1 SHA512

        lnrqf.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\lnrqf.msc
        • Size 517B
        • SHA256 7021f434a3b76eaa1663edd671782e09e8c725aacbfd758d7c28f24b15a2318b
        • MD5 SHA1 SHA512

        mdaksfntug.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mdaksfntug.dll
        • Size 510B
        • SHA256 1ac227a0d925b72745c7d2358dce6940f72ad2aa88ff1dfd4fde132da8d3f9bf
        • MD5 SHA1 SHA512

        mjsmsu.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mjsmsu.dat
        • Size 511B
        • SHA256 cbabcfae67619ad413f70219daefdff4e039f37c6f478dac22d45de0ad35f31f
        • MD5 SHA1 SHA512

        mswhw.pwq

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mswhw.pwq
        • Size 397KB
        • SHA256 387d82cff1d49af17926ec4a71ac6f64c9a707b59941ff6ac79c8ddb5dfc32d9
        • MD5 SHA1 SHA512 SSDEEP

        nbld.txt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\nbld.txt
        • Size 536B
        • SHA256 a64ef47e36ac90831f2cb944c5ddd9cdb4a45132c8a3da4fa3ef74fdc1f588bb
        • MD5 SHA1 SHA512

        ngbwkknqps.mp2

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\ngbwkknqps.mp2
        • Size 501B
        • SHA256 0ae368e2be196481e02146cc2c1ed708d5a4cc3485d2d53cd92b50685f6abc45
        • MD5 SHA1 SHA512

        nntwncpl.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\nntwncpl.msc
        • Size 523B
        • SHA256 36db4fba10e2b1dbca597abc8244c5e8f6462c7440ad20c81cb8ab7d6d608d70
        • MD5 SHA1 SHA512

        phnlcsf.xls

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\phnlcsf.xls
        • Size 540B
        • SHA256 661e832129955e0975331a0576f390f04eee6ce74dbaebf9057a5ac40fcbb26e
        • MD5 SHA1 SHA512

        pljgucjk.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pljgucjk.icm
        • Size 504B
        • SHA256 c1ed3f462b95fc26b9cd090e8e13884a73c37de438cc1858f5f5923838cacb33
        • MD5 SHA1 SHA512

        qerfqejn.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\qerfqejn.dll
        • Size 542B
        • SHA256 ceafeea7ab1470bd805e46043756e45caee8280702d36fcead637f0668429cc8
        • MD5 SHA1 SHA512

        qrowscnetu.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\qrowscnetu.dat
        • Size 551B
        • SHA256 1669ae8f806403999ad844d3ab3e7db09b75f31aef0c1ef9f417a857333f13e4
        • MD5 SHA1 SHA512

        rvfwstkdj.bin

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\rvfwstkdj.bin
        • Size 621B
        • SHA256 6179695ab55ee202731bf77b56871c65551d1acd2736f25c6d7b95f9112ae2ab
        • MD5 SHA1 SHA512

        svcg.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\svcg.mp3
        • Size 510B
        • SHA256 f2fc0170b433ebffc50f6278cc55d2adfcac641410cff5ecb45d78995a398e54
        • MD5 SHA1 SHA512

        tsjxnxfoh.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\tsjxnxfoh.mp3
        • Size 633B
        • SHA256 21408747272a3691ed91710ddfbbffb6ecf897277b5463b75265f5ac205f84a1
        • MD5 SHA1 SHA512

        usik.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\usik.ppt
        • Size 53.6MB
        • SHA256 6ebd0316dd0a6918b1076d0c5f669f79ec37bedd925e1643de883f0cf744feec
        • MD5 SHA1 SHA512 SSDEEP

        uvpkenxhkb.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\uvpkenxhkb.msc
        • Size 36KB
        • SHA256 2d48a95847d91290ef75bedc522381faf20950a9a0dd384e2fb401537946a6ca
        • MD5 SHA1 SHA512 SSDEEP

        uvpkenxhkb.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\uvpkenxhkb.msc
        • Size 36KB
        • SHA256 0208f52a6ce7bd4f9e7557638bfef1d13edab8279fbb4349a9a84dde60227b66
        • MD5 SHA1 SHA512 SSDEEP

        vfbiudj.xl

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\vfbiudj.xl
        • Size 880KB
        • SHA256 7bf426c11ea43614ef02e5373de0e53f54e785342d56c13182daa2849e9e3776
        • MD5 SHA1 SHA512 SSDEEP

        waqfrnrkm.bin

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\waqfrnrkm.bin
        • Size 530B
        • SHA256 2cc5b9cad5a0da0babc13568e942cfcc6a362a0108accf1d5ce78851719999e0
        • MD5 SHA1 SHA512

        xdqd.vbe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\xdqd.vbe
        • Size 77KB
        • SHA256 1573af56adeed5f7c5948c27b3ba26c2803a7cd15b3a12a3470aa33318a63b1e
        • MD5 SHA1 SHA512 SSDEEP

        xsfmxf.xls

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\xsfmxf.xls
        • Size 575B
        • SHA256 ff21e3403baf6e39c6f27628fa3b9908bfceac405191d15b2f999947f452f41e
        • MD5 SHA1 SHA512

        RegSvcs.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        • Size 44KB
        • SHA256 2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
        • MD5 SHA1 SHA512 SSDEEP

        tmp7ABE.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp7ABE.tmp
        • Size 1KB
        • SHA256 8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4
        • MD5 SHA1 SHA512

        tmp7B1C.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp7B1C.tmp
        • Size 1KB
        • SHA256 3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83
        • MD5 SHA1 SHA512

        memory/4612-194-0x0000000011A50000-0x0000000011AE2000-memory.dmp

        memory/4612-191-0x0000000001360000-0x000000000139A000-memory.dmp

        memory/4612-188-0x0000000001360000-0x0000000002360000-memory.dmp

        memory/4612-195-0x0000000011BD0000-0x0000000011C6C000-memory.dmp

        memory/4612-196-0x0000000011A00000-0x0000000011A10000-memory.dmp

        memory/4612-197-0x0000000011AF0000-0x0000000011AFA000-memory.dmp

        memory/4612-192-0x0000000072420000-0x0000000072BD0000-memory.dmp

        memory/4612-193-0x00000000120E0000-0x0000000012684000-memory.dmp

        memory/4612-205-0x0000000011BC0000-0x0000000011BCA000-memory.dmp

        memory/4612-206-0x00000000120B0000-0x00000000120BC000-memory.dmp

        memory/4612-207-0x00000000120C0000-0x00000000120DE000-memory.dmp

        memory/4612-208-0x0000000012B60000-0x0000000012B6A000-memory.dmp

        memory/4612-210-0x0000000072420000-0x0000000072BD0000-memory.dmp

        memory/4612-211-0x0000000011A00000-0x0000000011A10000-memory.dmp