Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-07-2024 09:52

General

  • Target

    412e4da499408460c37e1dbae4ef079d_JaffaCakes118.exe

  • Size

    629KB

  • MD5

    412e4da499408460c37e1dbae4ef079d

  • SHA1

    2b1a36c55c0507d1f93dde74ad55a9c80bc9a3b9

  • SHA256

    09227712662d5f428cabf6507ea374d41aeb786cab6b87e39a57b768a641d6ea

  • SHA512

    1503ed00a8e87a628112d58bc0ef79a6099bb123f5d7277f9ee1e1d081e83ffa14ea856ab568dd5f69f6e41c9abd8de3615b37aed82931c7564f7ee1dca96562

  • SSDEEP

    12288:105RES+3WT6FdYmBC+ahE2b0du4fd0XAoFY3qnM6eeX:OQ306smBnaeB0XAozL3X

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

new2021.myq-see.com:2021

185.140.53.138:2021

Mutex

4e93981f-5ccc-40a6-ab4d-8d13e34d915c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.140.53.138

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-10-16T08:01:24.315081336Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2021

  • default_group

    2021

  • 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

    4e93981f-5ccc-40a6-ab4d-8d13e34d915c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    new2021.myq-see.com

  • 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.

  • Adds Run key to start application 2 TTPs 1 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\412e4da499408460c37e1dbae4ef079d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\412e4da499408460c37e1dbae4ef079d_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3064
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RwurLTccEUUS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3014.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1208
    • C:\Users\Admin\AppData\Local\Temp\412e4da499408460c37e1dbae4ef079d_JaffaCakes118.exe
      "{path}"
      2⤵
      • 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:1808
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp3479.tmp"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3808
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp34C8.tmp"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2128

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\412e4da499408460c37e1dbae4ef079d_JaffaCakes118.exe.log
    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\tmp3014.tmp
    Filesize

    1KB

    MD5

    956cfb061b95d021811040c3781680c9

    SHA1

    804db20e5fcbefddd2eccefbc179347c0196c4e9

    SHA256

    f47ed104500226cb42c7fd4b20343f150b6887902d8528e35fc02c4b3dadad30

    SHA512

    b2eabe4e258a642387d1b3df89c15a4678dfe1a567f1236ab0add617030d5402255606a5a33f006fa0da2896f27668ce3ad4c8f1140c9ba0ce254801d7cd9e21

  • C:\Users\Admin\AppData\Local\Temp\tmp3479.tmp
    Filesize

    1KB

    MD5

    05283d237df6b291c3f6f499e990a65e

    SHA1

    b154b44711a76b0d8d6053d3db079a815834903d

    SHA256

    844ab46c80239bbe93bfb6200eff10fedac962c6d5f792be09009e2764499130

    SHA512

    91e82d378c0fa5e5bcf50d5cf3463e23e7efff8e127b793a2f01ba6680fa0a8267049ac2e7c594f40f77b0df144efbb6a2784dc2a713838c7659d3de4ab48c14

  • C:\Users\Admin\AppData\Local\Temp\tmp34C8.tmp
    Filesize

    1KB

    MD5

    e7d3c8560fe3e223f6dfa16c2066930e

    SHA1

    8e7729d6856489a28fb1fd6d2fbc3661d6394f18

    SHA256

    ec5bea77c4f620d54db7e0ea1ee81551631b7d9e42ae619deaa9a14f5f69415f

    SHA512

    f6a4f3bf0fa30a459a662250f502772f431c1cef5562f8a3e9770529c5d24e7226b46531af8c9e96a556f417a275caaa70df96fddaa482c5218bb6b47f2614ae

  • memory/1808-14-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1808-17-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/1808-31-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/1808-30-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/1808-29-0x0000000006A00000-0x0000000006A0A000-memory.dmp
    Filesize

    40KB

  • memory/1808-28-0x0000000005D20000-0x0000000005D3E000-memory.dmp
    Filesize

    120KB

  • memory/1808-27-0x0000000005AC0000-0x0000000005ACA000-memory.dmp
    Filesize

    40KB

  • memory/1808-19-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/3064-3-0x0000000004D80000-0x0000000004E12000-memory.dmp
    Filesize

    584KB

  • memory/3064-5-0x0000000004D40000-0x0000000004D4A000-memory.dmp
    Filesize

    40KB

  • memory/3064-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp
    Filesize

    4KB

  • memory/3064-18-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/3064-4-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/3064-2-0x0000000005290000-0x0000000005834000-memory.dmp
    Filesize

    5.6MB

  • memory/3064-1-0x00000000002C0000-0x0000000000364000-memory.dmp
    Filesize

    656KB

  • memory/3064-10-0x0000000007AD0000-0x0000000007B5E000-memory.dmp
    Filesize

    568KB

  • memory/3064-9-0x0000000074AD0000-0x0000000075280000-memory.dmp
    Filesize

    7.7MB

  • memory/3064-8-0x0000000074ADE000-0x0000000074ADF000-memory.dmp
    Filesize

    4KB

  • memory/3064-7-0x00000000061B0000-0x00000000061C2000-memory.dmp
    Filesize

    72KB

  • memory/3064-6-0x00000000061D0000-0x000000000626C000-memory.dmp
    Filesize

    624KB