Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    07-10-2022 12:32

General

  • Target

    d9c9287699412cfa29ffee706b0b93d6689b74ac1d32739e77bae1d8666aecbd.exe

  • Size

    865KB

  • MD5

    e5390b1f6c2eafe0b9b2d18e11aa8c9c

  • SHA1

    6e4102d3a2ca6cc71cf605d5c3ff9fd29c035e8d

  • SHA256

    d9c9287699412cfa29ffee706b0b93d6689b74ac1d32739e77bae1d8666aecbd

  • SHA512

    9d02eda4fe404275e49f8d5190850e251611e63ddd058458ec94954dc5ae0ae752a74ea93143e4ea5a66fb77ca13f86796cb0213c1600b2a3d84f8d2fef17715

  • SSDEEP

    12288:mx8dHAzc5rT9UDc3QYcyBZ9km5fqjJ5n:Tac5+mBom5yjr

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

dera5nano.ddns.net:1010

107.182.129.248:1010

Mutex

5a26bcef-e67f-486a-8e48-1748cc7891a2

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    107.182.129.248

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-06T12:07:01.612898436Z

  • 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

    1010

  • 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

    5a26bcef-e67f-486a-8e48-1748cc7891a2

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    dera5nano.ddns.net

  • 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.

  • 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d9c9287699412cfa29ffee706b0b93d6689b74ac1d32739e77bae1d8666aecbd.exe
    "C:\Users\Admin\AppData\Local\Temp\d9c9287699412cfa29ffee706b0b93d6689b74ac1d32739e77bae1d8666aecbd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1000
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FPeLSHpEGEP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8C79.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1616
    • C:\Users\Admin\AppData\Local\Temp\d9c9287699412cfa29ffee706b0b93d6689b74ac1d32739e77bae1d8666aecbd.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:1236
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp91C5.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1828
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9291.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1200

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8C79.tmp
    Filesize

    1KB

    MD5

    3f2291fc2c6fb24872fdfb5ab4afaa51

    SHA1

    50463f63fd17f5f38efe06464ade53174955783f

    SHA256

    b29cb946804bed22bb9e665eaa897de7dfdc133cf538168c148eda852e19ef7f

    SHA512

    be585d9f47710326119e1c9df51866e359b1027cf55bf5a572fcbdaa70200ed6f8b97435b8d0c090ac1314ad0ecde83cdf14f757a675b03d0837acf8a311a573

  • C:\Users\Admin\AppData\Local\Temp\tmp91C5.tmp
    Filesize

    1KB

    MD5

    1531872e555db1161dc3175eab7bf35d

    SHA1

    ac294b7ddb3e41d63cf339620a14206320774ed6

    SHA256

    0e8cd141c6bd287716a4f4f71107e017264433cf4d42a74154a93ae2c3042d03

    SHA512

    3b1f5e3b5462e551c5495f601bc75aa5d90c67b104459fc38326ba7547452731813e52fadc2f943ca3be0ba53b6f39199e0de681119bdf5b91f0bef8728372ad

  • C:\Users\Admin\AppData\Local\Temp\tmp9291.tmp
    Filesize

    1KB

    MD5

    885d6dd30570594e167fadb59d9ca0ea

    SHA1

    9981e583644c4eb9cf5056615a0e1c2913c8983b

    SHA256

    7155bc082d1713d77c2797575ee0ade8467fb7012f5376c1d6f4aa618141a7d2

    SHA512

    1623218143c2c25a7c85fa9da8e0f251f04a5eb848c4d0aa10bfb78688518b82393a2b3c7f287a9dc06a366ef9f46d0d4e2d246ad4cef4554a74c0bb6ff9dd2a

  • memory/1000-55-0x0000000076561000-0x0000000076563000-memory.dmp
    Filesize

    8KB

  • memory/1000-56-0x00000000003A0000-0x00000000003C0000-memory.dmp
    Filesize

    128KB

  • memory/1000-57-0x0000000005030000-0x00000000050BA000-memory.dmp
    Filesize

    552KB

  • memory/1000-58-0x0000000001F00000-0x0000000001F3A000-memory.dmp
    Filesize

    232KB

  • memory/1000-54-0x0000000000280000-0x000000000035E000-memory.dmp
    Filesize

    888KB

  • memory/1200-76-0x0000000000000000-mapping.dmp
  • memory/1236-65-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-79-0x0000000000650000-0x000000000066E000-memory.dmp
    Filesize

    120KB

  • memory/1236-67-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-68-0x000000000041E792-mapping.dmp
  • memory/1236-70-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-72-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-80-0x0000000000460000-0x000000000046A000-memory.dmp
    Filesize

    40KB

  • memory/1236-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-62-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1236-78-0x0000000000450000-0x000000000045A000-memory.dmp
    Filesize

    40KB

  • memory/1616-59-0x0000000000000000-mapping.dmp
  • memory/1828-74-0x0000000000000000-mapping.dmp