Analysis

  • max time kernel
    121s
  • max time network
    163s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    22-10-2021 12:17

General

  • Target

    Conform descrierii traducereProfil liniar355377.exe

  • Size

    540KB

  • MD5

    2758e51b671a8831a9518f4ee6c8f0e2

  • SHA1

    7fd0032aaff45b5e5b71af1c432899efc80d2162

  • SHA256

    3efbcb58b916487e6ac469d8c289ff1c1861446715480277fbb2e0af1444c8c3

  • SHA512

    c448bbe76d17a707a60b15557e0dcb87098be2f4622ab6d4023b62b5ed9b7c4048e020043c71839a08a07450cc769953b88b9fcb9ff04b5fc945cb1c94654666

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

178.170.138.163:5626

Mutex

01f9d977-6605-495e-941a-753d3cd6dc0b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-02-27T13:54:38.807349736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5626

  • default_group

    4Maticross.

  • 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

    01f9d977-6605-495e-941a-753d3cd6dc0b

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    178.170.138.163

  • 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 1 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe
    "C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3816
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fYFblKct" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8A5A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:184
    • C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe
      "C:\Users\Admin\AppData\Local\Temp\Conform descrierii traducereProfil liniar355377.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:404

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

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Conform descrierii traducereProfil liniar355377.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • memory/184-124-0x0000000000000000-mapping.dmp
  • memory/404-143-0x00000000066B0000-0x00000000066B6000-memory.dmp
    Filesize

    24KB

  • memory/404-150-0x0000000006930000-0x0000000006931000-memory.dmp
    Filesize

    4KB

  • memory/404-136-0x0000000005750000-0x0000000005753000-memory.dmp
    Filesize

    12KB

  • memory/404-137-0x0000000005270000-0x000000000576E000-memory.dmp
    Filesize

    5.0MB

  • memory/404-149-0x0000000006750000-0x000000000675F000-memory.dmp
    Filesize

    60KB

  • memory/404-148-0x0000000006710000-0x0000000006739000-memory.dmp
    Filesize

    164KB

  • memory/404-147-0x0000000006700000-0x000000000670A000-memory.dmp
    Filesize

    40KB

  • memory/404-125-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/404-126-0x000000000041E792-mapping.dmp
  • memory/404-146-0x00000000066E0000-0x00000000066EF000-memory.dmp
    Filesize

    60KB

  • memory/404-134-0x0000000005360000-0x0000000005365000-memory.dmp
    Filesize

    20KB

  • memory/404-135-0x0000000005720000-0x0000000005739000-memory.dmp
    Filesize

    100KB

  • memory/404-138-0x0000000006630000-0x000000000663D000-memory.dmp
    Filesize

    52KB

  • memory/404-144-0x00000000066C0000-0x00000000066CD000-memory.dmp
    Filesize

    52KB

  • memory/404-145-0x00000000066D0000-0x00000000066D9000-memory.dmp
    Filesize

    36KB

  • memory/404-139-0x0000000006640000-0x0000000006655000-memory.dmp
    Filesize

    84KB

  • memory/404-140-0x0000000006670000-0x0000000006676000-memory.dmp
    Filesize

    24KB

  • memory/404-141-0x0000000006690000-0x000000000669C000-memory.dmp
    Filesize

    48KB

  • memory/404-142-0x00000000066A0000-0x00000000066A7000-memory.dmp
    Filesize

    28KB

  • memory/3816-115-0x0000000000A90000-0x0000000000A91000-memory.dmp
    Filesize

    4KB

  • memory/3816-119-0x00000000054B0000-0x00000000054B1000-memory.dmp
    Filesize

    4KB

  • memory/3816-120-0x0000000005430000-0x000000000592E000-memory.dmp
    Filesize

    5.0MB

  • memory/3816-117-0x0000000005930000-0x0000000005931000-memory.dmp
    Filesize

    4KB

  • memory/3816-118-0x00000000054D0000-0x00000000054D1000-memory.dmp
    Filesize

    4KB

  • memory/3816-123-0x0000000008ED0000-0x0000000008F24000-memory.dmp
    Filesize

    336KB

  • memory/3816-122-0x0000000007600000-0x0000000007601000-memory.dmp
    Filesize

    4KB

  • memory/3816-121-0x0000000006280000-0x0000000006287000-memory.dmp
    Filesize

    28KB