Analysis

  • max time kernel
    138s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 22:25

General

  • Target

    8890d884a9ac5f8319b3739502600a53_JaffaCakes118.exe

  • Size

    709KB

  • MD5

    8890d884a9ac5f8319b3739502600a53

  • SHA1

    29f2a88600a85c835e845149f94da6cf266a5fbe

  • SHA256

    279303184a3975bb8f2ad4b8dfdf3234579976a3f4c6ea733a4f387ea9c24e3d

  • SHA512

    54810aa0bd1d39e75586c47aa59270e8036d5be0856294da8c4a31580361861fe0d7c52d95ae88c5d92a3b8868f8141c664939f3c1915e5d38b268e6b977307b

  • SSDEEP

    6144:V5vVSdzQIy1t9PSFnvWb2MYMRh5ApoaKB4S0lLEdD/We0V2c5UKAFCTDZ7UePZUN:V5aBsbLYLpo0S0mbzo5UNCTt7UePZUp

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

graceonme.ddns.net:3413

212.7.208.94:3413

Mutex

ff656f6d-dca0-4fd4-a988-9187645c88dc

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    212.7.208.94

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-08-23T20:40:45.770310136Z

  • 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

    3413

  • default_group

    Default

  • 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

    ff656f6d-dca0-4fd4-a988-9187645c88dc

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    graceonme.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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows 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.

  • Suspicious behavior: EnumeratesProcesses 3 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\8890d884a9ac5f8319b3739502600a53_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8890d884a9ac5f8319b3739502600a53_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LxmDgvUJpEf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAAD0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1712
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2728
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NTFS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpACB3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1528

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAAD0.tmp
    Filesize

    1KB

    MD5

    1b00ee1cd90e8bb54fa490716b6b1532

    SHA1

    db5eadb33d33a65f89fa4091fb607bd453af91fb

    SHA256

    8400ac69059736b8f8051ca5f5d72e38f3da7095c91303daa9637bcdfea0bf2e

    SHA512

    03f974d0a36136a66cdfa4422f71e8a79888c65923267602c13b672eddb83d4f1ad245fcde6f87a85da57fcf2d166aed3fbf96f44f4f6ff100679e162fb6a845

  • C:\Users\Admin\AppData\Local\Temp\tmpACB3.tmp
    Filesize

    1KB

    MD5

    c6f0625bf4c1cdfb699980c9243d3b22

    SHA1

    43de1fe580576935516327f17b5da0c656c72851

    SHA256

    8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576

    SHA512

    9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

  • memory/2104-0-0x0000000074B41000-0x0000000074B42000-memory.dmp
    Filesize

    4KB

  • memory/2104-1-0x0000000074B40000-0x00000000750EB000-memory.dmp
    Filesize

    5.7MB

  • memory/2104-2-0x0000000074B40000-0x00000000750EB000-memory.dmp
    Filesize

    5.7MB

  • memory/2104-3-0x0000000074B40000-0x00000000750EB000-memory.dmp
    Filesize

    5.7MB

  • memory/2104-4-0x0000000074B40000-0x00000000750EB000-memory.dmp
    Filesize

    5.7MB

  • memory/2104-21-0x0000000074B40000-0x00000000750EB000-memory.dmp
    Filesize

    5.7MB

  • memory/2728-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2728-13-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2728-20-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2728-12-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2728-11-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2728-18-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2728-17-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2728-10-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB