Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-04-2024 16:26

General

  • Target

    ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe

  • Size

    688KB

  • MD5

    ffb31463ba10f652b0dd8bc10e734b46

  • SHA1

    bfc2c18c7ea8f41823e5e1d89d2971fafa4966dd

  • SHA256

    8ca049e0699925d3ea76cb769814c220c410f29eae2f862ddbb03361e5a92d73

  • SHA512

    7cbc5aa59554d36eaf0daab10e1c7353b068cb65fb2afe225ef4812e43c90b1d0681c17c0924816a27850277c8b3b39fd388c72232b57615220dbbac9976a2e6

  • SSDEEP

    12288:Xx3TRu7iS/d3486AVmnmnk8RE9P6aowdJ5bUB0XKXHK:XZRxS/d3Y0RRE1Jq6XKa

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.193.75.228:1985

127.0.0.1:1985

Mutex

76ab9a6f-655c-4b06-a052-5a2cb9e07a2f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-05-07T21:13:54.381433036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1985

  • default_group

    KingT

  • 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

    76ab9a6f-655c-4b06-a052-5a2cb9e07a2f

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    91.193.75.228

  • 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.

  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 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).

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\ffb31463ba10f652b0dd8bc10e734b46_JaffaCakes118.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1948
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4688
  • 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=3700 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3348

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dy3gwtr4.gy2.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1948-56-0x0000000007730000-0x00000000077D3000-memory.dmp

      Filesize

      652KB

    • memory/1948-58-0x0000000007860000-0x000000000787A000-memory.dmp

      Filesize

      104KB

    • memory/1948-71-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/1948-68-0x0000000007B80000-0x0000000007B88000-memory.dmp

      Filesize

      32KB

    • memory/1948-66-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

      Filesize

      104KB

    • memory/1948-65-0x0000000007AA0000-0x0000000007AB4000-memory.dmp

      Filesize

      80KB

    • memory/1948-64-0x0000000007A90000-0x0000000007A9E000-memory.dmp

      Filesize

      56KB

    • memory/1948-63-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/1948-62-0x0000000007A60000-0x0000000007A71000-memory.dmp

      Filesize

      68KB

    • memory/1948-60-0x0000000007AE0000-0x0000000007B76000-memory.dmp

      Filesize

      600KB

    • memory/1948-59-0x00000000078D0000-0x00000000078DA000-memory.dmp

      Filesize

      40KB

    • memory/1948-57-0x0000000007EA0000-0x000000000851A000-memory.dmp

      Filesize

      6.5MB

    • memory/1948-55-0x0000000006AD0000-0x0000000006AEE000-memory.dmp

      Filesize

      120KB

    • memory/1948-15-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/1948-16-0x0000000002BA0000-0x0000000002BD6000-memory.dmp

      Filesize

      216KB

    • memory/1948-45-0x0000000070690000-0x00000000706DC000-memory.dmp

      Filesize

      304KB

    • memory/1948-18-0x00000000012A0000-0x00000000012B0000-memory.dmp

      Filesize

      64KB

    • memory/1948-19-0x00000000012A0000-0x00000000012B0000-memory.dmp

      Filesize

      64KB

    • memory/1948-44-0x0000000006B30000-0x0000000006B62000-memory.dmp

      Filesize

      200KB

    • memory/1948-21-0x00000000055E0000-0x0000000005C08000-memory.dmp

      Filesize

      6.2MB

    • memory/1948-24-0x0000000005DC0000-0x0000000005DE2000-memory.dmp

      Filesize

      136KB

    • memory/1948-25-0x0000000005E60000-0x0000000005EC6000-memory.dmp

      Filesize

      408KB

    • memory/1948-26-0x0000000005ED0000-0x0000000005F36000-memory.dmp

      Filesize

      408KB

    • memory/1948-43-0x00000000012A0000-0x00000000012B0000-memory.dmp

      Filesize

      64KB

    • memory/1948-42-0x0000000006580000-0x00000000065CC000-memory.dmp

      Filesize

      304KB

    • memory/1948-41-0x0000000006530000-0x000000000654E000-memory.dmp

      Filesize

      120KB

    • memory/1948-40-0x00000000060D0000-0x0000000006424000-memory.dmp

      Filesize

      3.3MB

    • memory/4656-4-0x0000000005060000-0x0000000005070000-memory.dmp

      Filesize

      64KB

    • memory/4656-11-0x00000000067B0000-0x00000000067EA000-memory.dmp

      Filesize

      232KB

    • memory/4656-2-0x0000000005310000-0x00000000058B4000-memory.dmp

      Filesize

      5.6MB

    • memory/4656-3-0x0000000004E00000-0x0000000004E92000-memory.dmp

      Filesize

      584KB

    • memory/4656-1-0x0000000000340000-0x00000000003F2000-memory.dmp

      Filesize

      712KB

    • memory/4656-20-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/4656-6-0x0000000005070000-0x000000000510C000-memory.dmp

      Filesize

      624KB

    • memory/4656-7-0x0000000006870000-0x0000000006882000-memory.dmp

      Filesize

      72KB

    • memory/4656-0-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/4656-10-0x0000000006730000-0x00000000067B2000-memory.dmp

      Filesize

      520KB

    • memory/4656-5-0x0000000004DC0000-0x0000000004DCA000-memory.dmp

      Filesize

      40KB

    • memory/4656-8-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/4656-9-0x0000000005060000-0x0000000005070000-memory.dmp

      Filesize

      64KB

    • memory/4688-38-0x0000000005FF0000-0x0000000005FFA000-memory.dmp

      Filesize

      40KB

    • memory/4688-72-0x0000000005010000-0x0000000005020000-memory.dmp

      Filesize

      64KB

    • memory/4688-12-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/4688-13-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB

    • memory/4688-17-0x0000000005010000-0x0000000005020000-memory.dmp

      Filesize

      64KB

    • memory/4688-33-0x0000000005C60000-0x0000000005C7E000-memory.dmp

      Filesize

      120KB

    • memory/4688-67-0x0000000005010000-0x0000000005020000-memory.dmp

      Filesize

      64KB

    • memory/4688-39-0x0000000005010000-0x0000000005020000-memory.dmp

      Filesize

      64KB

    • memory/4688-32-0x0000000005150000-0x000000000515A000-memory.dmp

      Filesize

      40KB

    • memory/4688-61-0x0000000074AB0000-0x0000000075260000-memory.dmp

      Filesize

      7.7MB