Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2022 01:41

General

  • Target

    Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe

  • Size

    968KB

  • MD5

    8beb5b0227606ded6fb8d361569a33a1

  • SHA1

    6d4ef697c42d499bded4586724570201213321eb

  • SHA256

    0560ac93c3fc234e056519b8f162ddd1bfe36905f54dc9c9088c25972e4a7970

  • SHA512

    e45e3324573aea0486d2cede8754d3697e0683d3cf497aca4390806d0b71701f3ac7f24db655f4a9531b3526076bb6743b9548f57891ad4229135e4bda9bb7c7

  • SSDEEP

    12288:QYT+ykC/7qO71wSY/030fjUZfmC6JtHMxxWGOyTYw:f+ykCZa/kMUZfOaq

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

anglemanagement.ddns.net:9036

anglemanagement039.freeddns.org:9036

Mutex

a2513c3a-8d74-413e-a1e8-a41d734656af

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    anglemanagement039.freeddns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-11T22:11:54.136761836Z

  • 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

    9036

  • default_group

    SEPT2022

  • 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

    a2513c3a-8d74-413e-a1e8-a41d734656af

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    anglemanagement.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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe
    "C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oWfykWJZalfRC.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:568
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oWfykWJZalfRC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC1AB.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1800
    • C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe
      "C:\Users\Admin\AppData\Local\Temp\Memorandum-Circular No. JGS 038-22 PHILHEALTH.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC775.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1080

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC1AB.tmp

    Filesize

    1KB

    MD5

    543f7fd64f5b11b7a899512b133262d7

    SHA1

    c3507ba946f52a178df028a59fff66f6c20c5a4f

    SHA256

    3a9144df60c1fcd4e43ead5dff6f145853fa00db105a09d62cfdaab44ecb4b2a

    SHA512

    c94e01d239cbc442775bf891b39b60728f62a9f9fcfc3cd1c51e4f389cd3f8aabcb02a018e259998db9c04f1c56f880cd80af3ddb753da6291ca34973eb9f16f

  • C:\Users\Admin\AppData\Local\Temp\tmpC775.tmp

    Filesize

    1KB

    MD5

    f37c2d6ef41302019dfc34cebd727abf

    SHA1

    33ee51ad053aa1539a19405b94b5a36ae383ae71

    SHA256

    0fe2c6341194fb407af7ca7cd4731066fd8b28f68ef67872af554878c0ec4b99

    SHA512

    4da178543e299d7599a75d0349b1de810549bbbfccad59d6d725807535be68922b83e7c709861221eb8512054519956688daf8c01535dcb4af16ba640571d6e7

  • memory/568-83-0x000000006E820000-0x000000006EDCB000-memory.dmp

    Filesize

    5.7MB

  • memory/568-82-0x000000006E820000-0x000000006EDCB000-memory.dmp

    Filesize

    5.7MB

  • memory/1552-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-81-0x0000000000520000-0x000000000052A000-memory.dmp

    Filesize

    40KB

  • memory/1552-95-0x00000000043D0000-0x00000000043E4000-memory.dmp

    Filesize

    80KB

  • memory/1552-94-0x00000000043A0000-0x00000000043CE000-memory.dmp

    Filesize

    184KB

  • memory/1552-65-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-67-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-68-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-70-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-73-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-75-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1552-93-0x0000000002100000-0x000000000210E000-memory.dmp

    Filesize

    56KB

  • memory/1552-92-0x0000000002070000-0x0000000002084000-memory.dmp

    Filesize

    80KB

  • memory/1552-79-0x00000000004B0000-0x00000000004BA000-memory.dmp

    Filesize

    40KB

  • memory/1552-80-0x0000000000500000-0x000000000051E000-memory.dmp

    Filesize

    120KB

  • memory/1552-91-0x0000000000B60000-0x0000000000B70000-memory.dmp

    Filesize

    64KB

  • memory/1552-90-0x0000000000B50000-0x0000000000B64000-memory.dmp

    Filesize

    80KB

  • memory/1552-89-0x0000000000B40000-0x0000000000B4E000-memory.dmp

    Filesize

    56KB

  • memory/1552-84-0x0000000000830000-0x000000000083C000-memory.dmp

    Filesize

    48KB

  • memory/1552-85-0x0000000000A20000-0x0000000000A3A000-memory.dmp

    Filesize

    104KB

  • memory/1552-86-0x0000000000A40000-0x0000000000A4E000-memory.dmp

    Filesize

    56KB

  • memory/1552-87-0x0000000000A50000-0x0000000000A62000-memory.dmp

    Filesize

    72KB

  • memory/1552-88-0x0000000000B30000-0x0000000000B3C000-memory.dmp

    Filesize

    48KB

  • memory/1600-55-0x0000000076461000-0x0000000076463000-memory.dmp

    Filesize

    8KB

  • memory/1600-56-0x00000000004A0000-0x00000000004B6000-memory.dmp

    Filesize

    88KB

  • memory/1600-57-0x00000000004B0000-0x00000000004BC000-memory.dmp

    Filesize

    48KB

  • memory/1600-58-0x0000000007F20000-0x0000000007FB4000-memory.dmp

    Filesize

    592KB

  • memory/1600-54-0x0000000000B70000-0x0000000000C68000-memory.dmp

    Filesize

    992KB

  • memory/1600-63-0x0000000005D30000-0x0000000005D6A000-memory.dmp

    Filesize

    232KB