Analysis

  • max time kernel
    62s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-09-2022 06:47

General

  • Target

    Jens Frodesen CV.exe

  • Size

    805KB

  • MD5

    210276dd5f377abe9e0b83e263507b83

  • SHA1

    90f06579adc205e74b57f9abb48b6b3f2c25635d

  • SHA256

    4d045c304e5cabb29318a9b07e9a6f41ff2172e72b704533a6f3b0bd79fba1c6

  • SHA512

    f292bd6768caba952aee7e3f47e0f613f4bb15b2693a61e16384d6d3a78bbf03808f3285915d77e7bead1c39cbdba664786d7cdff2553dd86258d16763e2a6dd

  • SSDEEP

    12288:gxDjQJlqtwEj1aIo1SUpomNVSs95FHP3jADqjJ5nt0+9MK:yj0qCEjpYjN75FDjrBe

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brightnano1.ddns.net:1989

171.22.30.97:1989

Mutex

fba1bbc6-2cc8-4c94-b6c0-dda5a12fd7fe

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    171.22.30.97

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-10T14:34:05.030247036Z

  • 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

    1989

  • 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

    fba1bbc6-2cc8-4c94-b6c0-dda5a12fd7fe

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    brightnano1.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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Jens Frodesen CV.exe
    "C:\Users\Admin\AppData\Local\Temp\Jens Frodesen CV.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:676
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\erfbnen" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4D2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2980
    • C:\Users\Admin\AppData\Local\Temp\Jens Frodesen CV.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:3156
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8D9.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2496
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp919.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4672

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

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Jens Frodesen CV.exe.log
    Filesize

    1KB

    MD5

    84e77a587d94307c0ac1357eb4d3d46f

    SHA1

    83cc900f9401f43d181207d64c5adba7a85edc1e

    SHA256

    e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

    SHA512

    aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

  • C:\Users\Admin\AppData\Local\Temp\tmp4D2.tmp
    Filesize

    1KB

    MD5

    58377af6fa1519262752d453bcf6eae2

    SHA1

    6f5df3b303d96b31f40fd570f1e43917e61025ce

    SHA256

    51a02254f814592e84187e29841113e4bfd422da49c5b385edecb9b2ed81ed02

    SHA512

    7a3f29d378825a28c91958aed9c18253a6a1ea7ced826e8712d692f7095ef1faf78a41b51e220f2b5551b32852c8d0f55bf425265703c0a630e477ec520241d0

  • C:\Users\Admin\AppData\Local\Temp\tmp8D9.tmp
    Filesize

    1KB

    MD5

    e1dd6e2c29777a6d5ca9e987132bdccc

    SHA1

    7a66c0cf1100262f6c3a73c34be1f9dfa2a6a132

    SHA256

    bd83ad0c63f039703d45a8a3650784d3d4ee9edd2f90c2219f8bedb56e095884

    SHA512

    e876049e62c7c430f3f6cb8f2684b5883172aa75c6214683c59f91b843b64f1b35bdf19b4acec3413cc7a2ae7543b68d44fb51f5f5c3dc6bf843a18c0ea1db96

  • C:\Users\Admin\AppData\Local\Temp\tmp919.tmp
    Filesize

    1KB

    MD5

    157cd55403665c49c9fd3ca1196c4397

    SHA1

    4feed6e606b41bb617274471349582963182756b

    SHA256

    49d903f84313feb16bd189c58b6c206f98b05da00ea0da881e2ff0c893b6ba5e

    SHA512

    bea7e3caa9c37cadd772a6d3ee0d9ed47de6b3e880cd58649be2939cacd00f70d4edc1ad177e432539267bb520094d9cda3f781cdfc69122f3775242321c11b8

  • memory/676-135-0x0000000005020000-0x00000000050BC000-memory.dmp
    Filesize

    624KB

  • memory/676-136-0x0000000004F40000-0x0000000004F4A000-memory.dmp
    Filesize

    40KB

  • memory/676-134-0x0000000004F80000-0x0000000005012000-memory.dmp
    Filesize

    584KB

  • memory/676-132-0x00000000004E0000-0x00000000005B0000-memory.dmp
    Filesize

    832KB

  • memory/676-133-0x0000000005490000-0x0000000005A34000-memory.dmp
    Filesize

    5.6MB

  • memory/2496-142-0x0000000000000000-mapping.dmp
  • memory/2980-137-0x0000000000000000-mapping.dmp
  • memory/3156-140-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/3156-139-0x0000000000000000-mapping.dmp
  • memory/3156-146-0x0000000006BF0000-0x0000000006C56000-memory.dmp
    Filesize

    408KB

  • memory/4672-144-0x0000000000000000-mapping.dmp