Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 01:59

General

  • Target
    85ab2898cb89505c95021511b1cc04ad_JaffaCakes118.exe
  • Size 953KB
  • Sample240531-cefc7scc44
  • SHA256 f08a007d5bb495d7caf8ce9a3244438e11edb3f2d44df754cb53526d78992172
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • franex.sytes.net:19055

  • franexserve.duckdns.org:19055

Mutex
  • b419eeae-0d79-4132-aae3-286d9a62a602

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    franexserve.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-08-08T22:26:34.089187836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    19055

  • default_group

    franex

  • 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

    b419eeae-0d79-4132-aae3-286d9a62a602

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    franex.sytes.net

  • 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

Signatures

  • NanoCore

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

  • Checks computer location settings 2 TTPs 1 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
  • 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).

  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85ab2898cb89505c95021511b1cc04ad_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\85ab2898cb89505c95021511b1cc04ad_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4260
    • C:\Users\Admin\AppData\Local\Temp\68007679\mkk.exe
      "C:\Users\Admin\AppData\Local\Temp\68007679\mkk.exe" kkd=bqt
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5000
      • C:\Users\Admin\AppData\Local\Temp\68007679\mkk.exe
        C:\Users\Admin\AppData\Local\Temp\68007679\mkk.exe C:\Users\Admin\AppData\Local\Temp\68007679\VPAKG
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4980
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
          4⤵
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:4944

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        VPAKG

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\VPAKG
        • Size 86KB
        • SHA256 7e82e922a3acf2162f95dbf0a3e6d0f2d943d22d26a980bf98086c03e67d07fc
        • MD5 SHA1 SHA512 SSDEEP

        ajp.icm

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\ajp.icm
        • Size 560B
        • SHA256 8d1c68c099832edc180e9a4f253ac82ba59fbcef8921259f8093ea98696fbf13
        • MD5 SHA1 SHA512

        ams.dat

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\ams.dat
        • Size 509B
        • SHA256 6715048bb55cd844cf29bbfa150f1852e983f8e5a8b7c9200934e61c61c5f2b6
        • MD5 SHA1 SHA512

        bqn.docx

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\bqn.docx
        • Size 548B
        • SHA256 bfa7aca421439ea8542a965e80aa77e4e538da57e380433fbe7c1af438c12a28
        • MD5 SHA1 SHA512

        cxa.ico

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\cxa.ico
        • Size 548B
        • SHA256 f8d966188f777059a30cd4962ca0f26f7e9f9e3522c3717521641ae908338000
        • MD5 SHA1 SHA512

        cxj.jpg

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\cxj.jpg
        • Size 521B
        • SHA256 a640a4d676836bb0a6aeae30ad90b84ad0bec86370537e3170adedbcca203970
        • MD5 SHA1 SHA512

        dcc.dat

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\dcc.dat
        • Size 526B
        • SHA256 48882141ad677ca0053ded7f2740c041b9cf0ad975d633f4ddd173ded1b6a778
        • MD5 SHA1 SHA512

        dwf.xl

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\dwf.xl
        • Size 564B
        • SHA256 578666fedb9f774a5b868f19eb0218d15c14501cf9caab279963971e638c4a10
        • MD5 SHA1 SHA512

        eed.docx

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\eed.docx
        • Size 519B
        • SHA256 664234bd3621d7155a9fd3e60f49ff5c2cc9757b63cc732c73dc178ed840f967
        • MD5 SHA1 SHA512

        efx.ico

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\efx.ico
        • Size 529B
        • SHA256 8aaf06b0548f381809061ba28879ffad21a1960b3847de9f79815ae6a6895773
        • MD5 SHA1 SHA512

        eks.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\eks.ppt
        • Size 510B
        • SHA256 3d23813ddd0cf87c369b2060be533f458b2869074e0f6412af6c00dd764aab16
        • MD5 SHA1 SHA512

        elq.txt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\elq.txt
        • Size 590B
        • SHA256 52f7f131544b520ee11f5513541823362ab56263b26d3dab8e32173873632815
        • MD5 SHA1 SHA512

        fci.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\fci.ppt
        • Size 566B
        • SHA256 e31092d9e3b2ccffdbe04b37ca0796858a09b537e049fd7834fa53171fe16c74
        • MD5 SHA1 SHA512

        fjo.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\fjo.ppt
        • Size 542B
        • SHA256 89a37ae587f5e124a383c26f90e643578d07c1252bf07e134f15aebc1bc71c22
        • MD5 SHA1 SHA512

        hot.jpg

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\hot.jpg
        • Size 588B
        • SHA256 33149aba15442860efd13e9eea4d6e39e08f0b90fbcecd21f60ee55a8df102a3
        • MD5 SHA1 SHA512

        ios.icm

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\ios.icm
        • Size 628B
        • SHA256 4b400aef743d0d421901a4bfe514c7eb31206515fa22ed015df7442568f9253c
        • MD5 SHA1 SHA512

        ixb.xl

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\ixb.xl
        • Size 610B
        • SHA256 4b540bca94ef8ba180dd7e0d2418ab6a78ec889c74c697c83cb6cc4eb9c4f0bb
        • MD5 SHA1 SHA512

        jph.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\jph.ppt
        • Size 600B
        • SHA256 3f93668513d5cc638d10689159215a66b9ed5027a0ce6684c164a8e9a2dbf345
        • MD5 SHA1 SHA512

        kkd=bqt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\kkd=bqt
        • Size 124KB
        • SHA256 7818b469d4000364e24aff98d4df416acfeac2c7707a6e1eece249e6c7a582ec
        • MD5 SHA1 SHA512 SSDEEP

        mkk.exe

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\mkk.exe
        • Size 872KB
        • SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
        • MD5 SHA1 SHA512 SSDEEP

        nef.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\nef.ppt
        • Size 543B
        • SHA256 4025ad0a029b3d8c39893e83b7c2c7db0e3bd71daffdee1399030d44ce1c69c4
        • MD5 SHA1 SHA512

        nfe.txt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\nfe.txt
        • Size 524B
        • SHA256 0793945b2b3a7f83c61eef84d08d3b064533fc794e5803650367f78da4f844dd
        • MD5 SHA1 SHA512

        ojj.xl

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\ojj.xl
        • Size 584B
        • SHA256 a8b2e95cd8b7b433b58600e6f1302c43d9ff29d25bbd1f2f5c8f887047b945d3
        • MD5 SHA1 SHA512

        oln.docx

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\oln.docx
        • Size 570B
        • SHA256 eea44f6a6a7c1f8e636dcca1cb5a5fd4a8916fbea8561c183f44855f7431ec00
        • MD5 SHA1 SHA512

        pij.xl

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\pij.xl
        • Size 541B
        • SHA256 485d3085f3458a89ab90461a0adfb8eac77079f1825b0ad771960958f0b241a7
        • MD5 SHA1 SHA512

        pud.xl

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\pud.xl
        • Size 592B
        • SHA256 923dc3d2499ab7c6fd20175af029cb5dae46cbeafc5d9ae1c8178a2eac03d8e2
        • MD5 SHA1 SHA512

        pxr.docx

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\pxr.docx
        • Size 613B
        • SHA256 1f37d076b52fe048fbaa0198f5f2988835cb829df7b731bbf4e32c43328ee14c
        • MD5 SHA1 SHA512

        qpo.dat

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\qpo.dat
        • Size 512B
        • SHA256 f7cb97d8057222d8370edd0e404ba49d680c325e226145ecaf393de167a9c893
        • MD5 SHA1 SHA512

        rti.pdf

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\rti.pdf
        • Size 582KB
        • SHA256 0bda6573c67817e2e2a750145cd1e5b63ee7dd96105a523569ff0be88f74cca8
        • MD5 SHA1 SHA512 SSDEEP

        rwn.dat

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\rwn.dat
        • Size 612B
        • SHA256 3db35c8a9336429fe4ebf9e56bd4ea16ab69644c6c663087b5bf08e718cfefac
        • MD5 SHA1 SHA512

        sbn.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\sbn.mp3
        • Size 553B
        • SHA256 cc4cc52a6fc599fc42aa4850561dbc75057640f2bb6f81c9624e03d0be261796
        • MD5 SHA1 SHA512

        sth.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\sth.mp3
        • Size 531B
        • SHA256 1411c40521c26a6cd967468a43814ae4d52226dba31d1cccb05610fee8c46fc2
        • MD5 SHA1 SHA512

        tae.mp4

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\tae.mp4
        • Size 521B
        • SHA256 37ff28644a0c63a3eebab6fce1cbdce335b532aa1225149f611737b4ef7a905c
        • MD5 SHA1 SHA512

        thr.ico

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\thr.ico
        • Size 514B
        • SHA256 35e4ae4d61f8ba1f1b263b87e15db1a72789ca05b8c82021981b51de2951ae53
        • MD5 SHA1 SHA512

        thw.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\thw.mp3
        • Size 572B
        • SHA256 33b960d7b70678c9fe75532958c0188dc263cd5a0c0fd9f167df65ef11bd44de
        • MD5 SHA1 SHA512

        tsn.icm

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\tsn.icm
        • Size 529B
        • SHA256 b501a50a93a6a9c416c379c6656b6f012222d24a00430752f77d48a322a52af2
        • MD5 SHA1 SHA512

        uci.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\uci.mp3
        • Size 518B
        • SHA256 19af0175ae4af5dc5c2fff278daefcf643e87e4778e6f591fe7ba49de909e828
        • MD5 SHA1 SHA512

        uge.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\uge.ppt
        • Size 642B
        • SHA256 ee10cb6b65303843942f9710bf18adafa5f7fc2f56b4aeebab3a0b2a2c9c2533
        • MD5 SHA1 SHA512

        umg.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\umg.mp3
        • Size 578B
        • SHA256 f78d947d3c467e8f088abcac250dd02e0e50e6f20be96bea72d10b58df5c7386
        • MD5 SHA1 SHA512

        uoj.docx

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\uoj.docx
        • Size 520B
        • SHA256 7b0e66f11c4d82e25d7e631f36a2e2512437cfeffd8e2baadf9ceebfe461b517
        • MD5 SHA1 SHA512

        uwi.mp4

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\uwi.mp4
        • Size 523B
        • SHA256 8710f9281b805558291c65b0282b0d4ad2b58e34cf1d98f444482997e5fbfb70
        • MD5 SHA1 SHA512

        vkh.ico

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\vkh.ico
        • Size 535B
        • SHA256 3b890653aa9f67f07de3efa52a82b7617ee275ce6188ad0ea3bbc93876494420
        • MD5 SHA1 SHA512

        wer.icm

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\wer.icm
        • Size 585B
        • SHA256 61fb1ef7e7e7a1d7f7256fa8121491191536fde0b746466d48efac296e990c04
        • MD5 SHA1 SHA512

        wlj.mp4

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\wlj.mp4
        • Size 533B
        • SHA256 63fbc16fae4342ac5581a3fe3dd4f935749c19d04c28dffcddd202074c64825a
        • MD5 SHA1 SHA512

        www.jpg

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\www.jpg
        • Size 542B
        • SHA256 b9a833caa48f5ef5c75a24937147e31e50c12c54c2e2895d6afbb55fdb3267b2
        • MD5 SHA1 SHA512

        xjk.dat

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\xjk.dat
        • Size 559B
        • SHA256 afc4a52a8add8e08a15ae5b51fab0539ab23ef4ad1cc6588d3a304b2cd2251d2
        • MD5 SHA1 SHA512

        xtj.pdf

        • Path C:\Users\Admin\AppData\Local\Temp\68007679\xtj.pdf
        • Size 542B
        • SHA256 df1edafbac625b525a2bd9d35a6035fca19f7246560672f5a241111822ad35ac
        • MD5 SHA1 SHA512

        memory/4944-157-0x0000000005220000-0x000000000522A000-memory.dmp

        memory/4944-159-0x0000000005540000-0x000000000554A000-memory.dmp

        memory/4944-158-0x0000000005390000-0x00000000053AE000-memory.dmp

        memory/4944-154-0x00000000051D0000-0x00000000051DA000-memory.dmp

        memory/4944-153-0x0000000005270000-0x000000000530C000-memory.dmp

        memory/4944-152-0x0000000005130000-0x00000000051C2000-memory.dmp

        memory/4944-151-0x0000000005640000-0x0000000005BE4000-memory.dmp

        memory/4944-150-0x0000000000400000-0x0000000000438000-memory.dmp