Analysis

  • max time kernel
    153s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 18:56

General

  • Target

    7eccfb2ac45a99a369790670d0e81ccc19281b86cfaf8036b951870ebee22291.exe

  • Size

    851KB

  • MD5

    b21939c8f60b333a602450ce9ed8e5c8

  • SHA1

    999bfff04341d174c02978a42d572e96909192bc

  • SHA256

    7eccfb2ac45a99a369790670d0e81ccc19281b86cfaf8036b951870ebee22291

  • SHA512

    6bf7c99ad2aa4e83afbe5af99cdcccccb1bf00759b25c8c88ab5bccb074fddb4f205d35b6c9189fa5008ef27bad2984a6a20e2da4a7b032d72766b77d2cc4235

  • SSDEEP

    12288:kgrZqWiXsPnmx0Ap1OynaWM1ITRtEbmOkdbIIRkxJ5g7v:kgrwWiXEVAp1OydMUtEbbQEI65k

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

45.137.22.36:4837

vps.rootlayer.net:4837

Mutex

a34ff911-f69f-4250-a136-9f7dda1ff095

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    vps.rootlayer.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-26T04:44:00.669256236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4837

  • default_group

    root1

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    true

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    a34ff911-f69f-4250-a136-9f7dda1ff095

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    45.137.22.36

  • 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 computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 1 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7eccfb2ac45a99a369790670d0e81ccc19281b86cfaf8036b951870ebee22291.exe
    "C:\Users\Admin\AppData\Local\Temp\7eccfb2ac45a99a369790670d0e81ccc19281b86cfaf8036b951870ebee22291.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QpHPkzgcBelvAL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5F9F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:848
    • C:\Users\Admin\AppData\Local\Temp\7eccfb2ac45a99a369790670d0e81ccc19281b86cfaf8036b951870ebee22291.exe
      "C:\Users\Admin\AppData\Local\Temp\7eccfb2ac45a99a369790670d0e81ccc19281b86cfaf8036b951870ebee22291.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2620

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5F9F.tmp
    Filesize

    1KB

    MD5

    6a00a9331a9094624265fc82fb80c981

    SHA1

    fc11de4fd6c8764cdf38b147363650a3e2e46e24

    SHA256

    1720b14b690696fbb1a435d19f5432326580caf8ccf2c5b2325c13f2d0241b22

    SHA512

    95cb868e8ad5f1a85af7da41bd6e602385f1ad3b59b04371efd0144161caa2611d80c53dfa5866641ea489e2869491be896176f4161dbf052cd252e916386e7e

  • memory/848-138-0x0000000000000000-mapping.dmp
  • memory/1628-132-0x00000000008C0000-0x000000000099A000-memory.dmp
    Filesize

    872KB

  • memory/1628-133-0x00000000052D0000-0x000000000536C000-memory.dmp
    Filesize

    624KB

  • memory/1628-134-0x0000000005970000-0x0000000005F14000-memory.dmp
    Filesize

    5.6MB

  • memory/1628-135-0x0000000005460000-0x00000000054F2000-memory.dmp
    Filesize

    584KB

  • memory/1628-136-0x00000000053E0000-0x00000000053EA000-memory.dmp
    Filesize

    40KB

  • memory/1628-137-0x0000000005660000-0x00000000056B6000-memory.dmp
    Filesize

    344KB

  • memory/2620-140-0x0000000000000000-mapping.dmp
  • memory/2620-141-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB