Resubmissions

24-07-2023 06:32

230724-haylwaag65 10

16-07-2023 18:15

230716-wwbacshb7z 10

Analysis

  • max time kernel
    153s
  • max time network
    184s
  • platform
    windows7_x64
  • resource
    win7-20230712-en
  • resource tags

    arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
  • submitted
    24-07-2023 06:32

General

  • Target

    2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe

  • Size

    924KB

  • MD5

    24948fffedf100ae5717a597279f2bd0

  • SHA1

    9682d3b718238fbc682d45cb66f67927a65ff584

  • SHA256

    2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53

  • SHA512

    a229bf77de9ddf1c9dd99c6bb24f6ddf21c782ca3a19488b921fba8fd36eaba1d4930d9e27176b63ee09a3843473d09a06acd6c367270abd58a80c3de136d4d9

  • SSDEEP

    12288:e6SlCKDiW1q9I6/kldSCGDyDg24xUMmFIDHmekod+ik4g8y3SoDpbBj0pV:bSwK5OPWUyCH1wrEloDptA

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

harolds.ooguy.com:6051

harold.2waky.com:6051

Mutex

79556390-7150-4551-9067-10cd33e6482e

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    harold.2waky.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-04-28T08:36:06.976087436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6051

  • default_group

    Acandy

  • 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

    79556390-7150-4551-9067-10cd33e6482e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    harolds.ooguy.com

  • 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).

  • Creates scheduled task(s) 1 TTPs 1 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 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe
    "C:\Users\Admin\AppData\Local\Temp\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2116
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GzgZEDIygQcf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8F06.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1496
    • C:\Users\Admin\AppData\Local\Temp\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2812

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\tmp8F06.tmp
    Filesize

    1KB

    MD5

    3848272cba4afaa650598502032b1954

    SHA1

    079a73e7fdefab05ca177fe37cf5da7219904eb8

    SHA256

    a1c0aad65e79182d3cd47db162f1a582abeeb3ccb6364fe70350c030463cfe2f

    SHA512

    a9d727362c22602a34fcd4da478bb8fdbb43f9eadabd7ddce9464afb7d9ef72b2526e9fcf832a04d840df38f8796f68f9cea59c40293d3918605f4755e7c56b9

  • memory/2116-54-0x00000000008B0000-0x000000000099E000-memory.dmp
    Filesize

    952KB

  • memory/2116-55-0x0000000074200000-0x00000000748EE000-memory.dmp
    Filesize

    6MB

  • memory/2116-56-0x0000000000320000-0x000000000032A000-memory.dmp
    Filesize

    40KB

  • memory/2116-57-0x0000000074200000-0x00000000748EE000-memory.dmp
    Filesize

    6MB

  • memory/2116-58-0x0000000007180000-0x00000000071C0000-memory.dmp
    Filesize

    256KB

  • memory/2116-59-0x0000000000B30000-0x0000000000B70000-memory.dmp
    Filesize

    256KB

  • memory/2116-84-0x0000000074200000-0x00000000748EE000-memory.dmp
    Filesize

    6MB

  • memory/2812-69-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-78-0x0000000074200000-0x00000000748EE000-memory.dmp
    Filesize

    6MB

  • memory/2812-65-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-71-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2812-73-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-75-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-77-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-67-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-79-0x00000000048F0000-0x0000000004930000-memory.dmp
    Filesize

    256KB

  • memory/2812-81-0x0000000000470000-0x000000000047A000-memory.dmp
    Filesize

    40KB

  • memory/2812-82-0x00000000004E0000-0x00000000004FE000-memory.dmp
    Filesize

    120KB

  • memory/2812-83-0x0000000000480000-0x000000000048A000-memory.dmp
    Filesize

    40KB

  • memory/2812-63-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2812-85-0x0000000074200000-0x00000000748EE000-memory.dmp
    Filesize

    6MB

  • memory/2812-86-0x00000000048F0000-0x0000000004930000-memory.dmp
    Filesize

    256KB