Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-05-2024 18:05

General

  • Target

    1dbab2dfd53fa6481e4f349d74ca6798_JaffaCakes118.exe

  • Size

    414KB

  • MD5

    1dbab2dfd53fa6481e4f349d74ca6798

  • SHA1

    96301fd3a1d6c4a4c79af509b1601061c7296f94

  • SHA256

    3a903150a230d5a6f08058cddedf503aa25076b489690a092b3ee46298cfd531

  • SHA512

    9aeb8ead2f4254d8f6e8d900cc5904f0950867d9c6aecb660c2c5fc75c80699b34921caaf991505a215bc798dba0b074de53b7509a44d4a15b2b1f3a98ae659d

  • SSDEEP

    6144:bHnBfTXqlbSpwEiCbjKDVVH4q9D9izTG+mBoaXjauY4/2FE:bBqbgwb/DVVH4yD9i25BoarYzFE

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

smithhk.ddns.net:4782

Mutex

963de217-df7f-4e6b-92bd-1e43f6c4f226

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-04-27T02:01:46.610026136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    4782

  • default_group

    Frosh Benz

  • 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

    963de217-df7f-4e6b-92bd-1e43f6c4f226

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    smithhk.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

  • Drops startup file 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1dbab2dfd53fa6481e4f349d74ca6798_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1dbab2dfd53fa6481e4f349d74ca6798_JaffaCakes118.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:628
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\54ixrtip\54ixrtip.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3608
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES290F.tmp" "c:\Users\Admin\AppData\Local\Temp\54ixrtip\CSCC25CA9D1F3F441AC9AD181B36290FD66.TMP"
        3⤵
          PID:1436
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /query
        2⤵
          PID:1972
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /sc MINUTE /tn Intel /MO 1 /tr "C:\Users\Admin\AppData\Roaming\null\
          2⤵
          • Creates scheduled task(s)
          PID:332
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:4492
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:4752

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\54ixrtip\54ixrtip.dll

          Filesize

          9KB

          MD5

          85229e27e4b3fab088930f108dee0a97

          SHA1

          b8bd04715614076ae9881e403864e95a04c6a350

          SHA256

          0fa75a10cb206bec76b7fbf6c5bb058d643086768c8808ed2ee2501809662d95

          SHA512

          3fb23233f03d58e8f57a4e4e88dc902b3e6819daec29fd3129cf5166c3e09f12f05ae9ef0c9526e73d7deb8b8e25dc9459e6d296e0fce2d38b4d27f3036e8ba9

        • C:\Users\Admin\AppData\Local\Temp\54ixrtip\54ixrtip.pdb

          Filesize

          25KB

          MD5

          acb3320a18588650826bc64aa4d529fa

          SHA1

          d56b49ebd99b2b020ce3845e668998bcc35353d5

          SHA256

          0435f405dd9d300539610b90b46234cc9458e079ecdf16b159ed6b3a1aca5e36

          SHA512

          2873d206c605f0a5339bd83da02b9b07dcf3526eae388f1eb6b890584f95c2e9550763da17da11e7f6aeca602c4697ea0a2fff972c9c19ff901714bd7b0be86a

        • C:\Users\Admin\AppData\Local\Temp\RES290F.tmp

          Filesize

          1KB

          MD5

          c5288916b2564c30e65653d4b70a5d38

          SHA1

          92c3997c9979f9f85970c35d741565f7591d330c

          SHA256

          9e03dc6749b8b3214b8426bb153d32db38a070f811d716ec9f24c7cf8acda2df

          SHA512

          e4c0ccf3d99b9d141bbca3ca3e7de117f0f0017cbb0da601c5c528103c87f771532a51ff4ba92495a85aa9f858adfa33c1b73c29ca95a527dd3338f2d40fe377

        • \??\c:\Users\Admin\AppData\Local\Temp\54ixrtip\54ixrtip.0.cs

          Filesize

          10KB

          MD5

          21cd1b3e77c3f770205babc7a862c6ef

          SHA1

          ee71e8ef404a95d7f77e2421d5892f349d0fc2be

          SHA256

          905250aa3670ddec5a3a4d3c2427190f973fe3c669b030884b5ef7da6339b075

          SHA512

          806ce8d2162864331b29ebb1fe0bf814965db9077c537d5a0b9c13294c1edcba6e11c5f929824a3aef8680097e0322c09481f4aaa450cceee788591f6d2441b4

        • \??\c:\Users\Admin\AppData\Local\Temp\54ixrtip\54ixrtip.cmdline

          Filesize

          312B

          MD5

          240bcd6db79f7db6ac9891b70eb30026

          SHA1

          8403e423f081d191ca18046861c4ed7061293ade

          SHA256

          e8846aee42600e74dd7c5b9c2bcaf043ab23f6c87cca26def3d0313d8a746b57

          SHA512

          8fd8558863998457a95bcc9c1c8e37f387140767d01c60002b8beb3dcfe788090477581a1dc122191e1771355dd85877be8b3ad59525bfd94b80ce8383ab9372

        • \??\c:\Users\Admin\AppData\Local\Temp\54ixrtip\CSCC25CA9D1F3F441AC9AD181B36290FD66.TMP

          Filesize

          1KB

          MD5

          2492da72482474621a04af0a01f39e44

          SHA1

          184df1e2d2b5560f4e5ac97d02ac6bf75511b063

          SHA256

          ac69b4814ed40e12df850eb5365cf57bde36bee697e83d79d15b5e8e875eba8c

          SHA512

          f060584e7ee2b7c804d7eda4a617cda17a9dcac9d802f750a975575da25eefdcc2379dd36f741859f8d3901906eace3d7b95731f6739d60cfc022f756667a192

        • memory/628-19-0x0000000005B10000-0x0000000005BA2000-memory.dmp

          Filesize

          584KB

        • memory/628-24-0x0000000005540000-0x0000000005578000-memory.dmp

          Filesize

          224KB

        • memory/628-1-0x0000000000BD0000-0x0000000000C24000-memory.dmp

          Filesize

          336KB

        • memory/628-17-0x0000000002FC0000-0x0000000002FC8000-memory.dmp

          Filesize

          32KB

        • memory/628-0-0x0000000074E4E000-0x0000000074E4F000-memory.dmp

          Filesize

          4KB

        • memory/628-20-0x0000000006020000-0x0000000006064000-memory.dmp

          Filesize

          272KB

        • memory/628-21-0x0000000002F60000-0x0000000002F6C000-memory.dmp

          Filesize

          48KB

        • memory/628-2-0x0000000074E40000-0x00000000755F0000-memory.dmp

          Filesize

          7.7MB

        • memory/628-25-0x0000000006060000-0x00000000060FC000-memory.dmp

          Filesize

          624KB

        • memory/628-28-0x0000000074E40000-0x00000000755F0000-memory.dmp

          Filesize

          7.7MB

        • memory/4492-26-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/4492-29-0x00000000056D0000-0x0000000005C74000-memory.dmp

          Filesize

          5.6MB

        • memory/4492-30-0x0000000005120000-0x000000000512A000-memory.dmp

          Filesize

          40KB

        • memory/4492-32-0x00000000051A0000-0x00000000051AA000-memory.dmp

          Filesize

          40KB

        • memory/4492-33-0x0000000005310000-0x000000000532E000-memory.dmp

          Filesize

          120KB

        • memory/4492-34-0x00000000056B0000-0x00000000056BA000-memory.dmp

          Filesize

          40KB