Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    09-12-2021 21:24

General

  • Target

    Dmg~2345678765-09876789.cmd.exe

  • Size

    1.0MB

  • MD5

    f175d0b6a0808bce473aa0ae47fa01b0

  • SHA1

    8da7b1bc07922d24b5b73060814119b5db5cdea8

  • SHA256

    c1a6565f3f81efca37159f4ed315623cc1defc395c738fba77d8c24d1f207cc6

  • SHA512

    477d9e8597fd4aec7ba0167b8d2ddd8d3c049e4cd95ddc3b0b762f330aa6b6905a20325ec5e55b9622b652ee19856b96cdd647d512b825d8770d89e08099afe7

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

6262.hopto.org:6262

185.140.53.131:6262

Mutex

7b578534-8b04-4a5d-9eb5-d375830cf45d

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.140.53.131

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-08-31T05:14:41.931016736Z

  • 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

    6262

  • default_group

    6262

  • 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

    7b578534-8b04-4a5d-9eb5-d375830cf45d

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    6262.hopto.org

  • 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.

  • Executes dropped EXE 4 IoCs
  • Obfuscated with Agile.Net obfuscator 3 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 3 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Dmg~2345678765-09876789.cmd.exe
    "C:\Users\Admin\AppData\Local\Temp\Dmg~2345678765-09876789.cmd.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3620
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "keysopne" /t REG_SZ /d "C:\Users\Admin\Documents\Dmg~2345678765-09876789.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4036
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "keysopne" /t REG_SZ /d "C:\Users\Admin\Documents\Dmg~2345678765-09876789.exe"
        3⤵
        • Adds Run key to start application
        PID:4240
    • C:\Users\Admin\Documents\Dmg~2345678765-09876789.exe
      "C:\Users\Admin\Documents\Dmg~2345678765-09876789.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3216
      • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
        "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
        3⤵
        • Executes dropped EXE
        • 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:380
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WAN Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC31D.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1328
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "WAN Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC38B.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1664
      • C:\Users\Admin\AppData\Local\Temp\loppp.exe
        "C:\Users\Admin\AppData\Local\Temp\loppp.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2384
        • C:\Users\Admin\AppData\Local\Temp\loppp.exe
          "C:\Users\Admin\AppData\Local\Temp\loppp.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2700

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\Microsoft\CLR_v4.0_32\UsageLogs\loppp.exe.log
    MD5

    e555c48cb712a9597ecb55a60135d1f8

    SHA1

    2081c72d30c34ec3f61f9944545ecdaae11521f7

    SHA256

    815c80df060afa8acf7640ca011735ef77c66666d03901e04a8767827d5da4e9

    SHA512

    32129b5be15217e5400f1e7536270a703d62db60ebb06396b9d74703e6a0dcd2e78f7f42b2019093be1508a9310912f305b88de274a295c9135a4086cd8c8427

  • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    MD5

    b58b926c3574d28d5b7fdd2ca3ec30d5

    SHA1

    d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

    SHA256

    6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

    SHA512

    b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

  • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    MD5

    b58b926c3574d28d5b7fdd2ca3ec30d5

    SHA1

    d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

    SHA256

    6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

    SHA512

    b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

  • C:\Users\Admin\AppData\Local\Temp\loppp.exe
    MD5

    0e362e7005823d0bec3719b902ed6d62

    SHA1

    590d860b909804349e0cdc2f1662b37bd62f7463

    SHA256

    2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

    SHA512

    518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

  • C:\Users\Admin\AppData\Local\Temp\loppp.exe
    MD5

    0e362e7005823d0bec3719b902ed6d62

    SHA1

    590d860b909804349e0cdc2f1662b37bd62f7463

    SHA256

    2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

    SHA512

    518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

  • C:\Users\Admin\AppData\Local\Temp\loppp.exe
    MD5

    0e362e7005823d0bec3719b902ed6d62

    SHA1

    590d860b909804349e0cdc2f1662b37bd62f7463

    SHA256

    2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad

    SHA512

    518991b68496b3f8545e418cf9b345e0791e09cc20d177b8aa47e0aba447aa55383c64f5bdaca39f2b061a5d08c16f2ad484af8a9f238ca23ab081618fba3ad3

  • C:\Users\Admin\AppData\Local\Temp\loppp.txt
    MD5

    cb9060d384470e2e4e4cb17080594364

    SHA1

    5e46cb2ee73190914b321cabc77841208f8eb857

    SHA256

    ddea80ce310f77c4d0ce1bec762c1125e9e6b4f19e22a59b5a027b450cf375f2

    SHA512

    826a1923982e746b870324c14e4fc5a6c3b91532a323cbfebae878e3015fdb471aae1f627621eb5c58460e4437d766c297b5be3a2b08d97ade4dbc83576dabdb

  • C:\Users\Admin\AppData\Local\Temp\loppp.txt
    MD5

    6255c47afb6eab1335fb88256792133f

    SHA1

    1ed13f292081ce22cd1a35d24f3f0334baccb647

    SHA256

    08e021f5c4fb3917eb34fc43f01946ad425cae090103333767aa8aef43903310

    SHA512

    09a1bd389661a6e434cbcd368beed68f734f132f57587b2cc0c780f3e004b9a621ae95b35af3a8d35c69a7fd6b79f94cacd0d74d8e3accfa766c0f334ab2e1a4

  • C:\Users\Admin\AppData\Local\Temp\loppp.txt
    MD5

    6255c47afb6eab1335fb88256792133f

    SHA1

    1ed13f292081ce22cd1a35d24f3f0334baccb647

    SHA256

    08e021f5c4fb3917eb34fc43f01946ad425cae090103333767aa8aef43903310

    SHA512

    09a1bd389661a6e434cbcd368beed68f734f132f57587b2cc0c780f3e004b9a621ae95b35af3a8d35c69a7fd6b79f94cacd0d74d8e3accfa766c0f334ab2e1a4

  • C:\Users\Admin\AppData\Local\Temp\tmpC31D.tmp
    MD5

    4cd7da0133ff64f40216341d95fe30bb

    SHA1

    88146cfd7754b988f50e929d876f33dc9916758f

    SHA256

    37cce77e24a3c3d5ab28c16f726ef6a62c553acd972e256927f69064c4e1cfde

    SHA512

    fa5b84f207fd9f20b2eace6cda9124e9d718fc80dc0a5fab31507f372d15ba69e1098a26e2e7036ba559ca52a99cfd804ca99ba68bda0a60386a33197722df8f

  • C:\Users\Admin\AppData\Local\Temp\tmpC38B.tmp
    MD5

    9f0deb7cf87b4ae4efde9cc98ff481db

    SHA1

    760265641ce176e555c64bedb494f6f75fd0bd27

    SHA256

    a57110ccf892c8ca9c9b28b2608f4d37a8b5df1bfcf1411e7c62b500e82fabda

    SHA512

    6517829d9a09df437a340485bb87183c7a80135a76296308120e0ab385f5ffa7369a2ace9655ffaf1c594869cc6a20015520b6b0c681217b641b3c58127a29de

  • C:\Users\Admin\Documents\Dmg~2345678765-09876789.exe
    MD5

    f175d0b6a0808bce473aa0ae47fa01b0

    SHA1

    8da7b1bc07922d24b5b73060814119b5db5cdea8

    SHA256

    c1a6565f3f81efca37159f4ed315623cc1defc395c738fba77d8c24d1f207cc6

    SHA512

    477d9e8597fd4aec7ba0167b8d2ddd8d3c049e4cd95ddc3b0b762f330aa6b6905a20325ec5e55b9622b652ee19856b96cdd647d512b825d8770d89e08099afe7

  • C:\Users\Admin\Documents\Dmg~2345678765-09876789.exe
    MD5

    f175d0b6a0808bce473aa0ae47fa01b0

    SHA1

    8da7b1bc07922d24b5b73060814119b5db5cdea8

    SHA256

    c1a6565f3f81efca37159f4ed315623cc1defc395c738fba77d8c24d1f207cc6

    SHA512

    477d9e8597fd4aec7ba0167b8d2ddd8d3c049e4cd95ddc3b0b762f330aa6b6905a20325ec5e55b9622b652ee19856b96cdd647d512b825d8770d89e08099afe7

  • memory/380-159-0x0000000005060000-0x000000000555E000-memory.dmp
    Filesize

    5.0MB

  • memory/380-142-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/380-143-0x000000000041E792-mapping.dmp
  • memory/380-158-0x0000000005240000-0x0000000005243000-memory.dmp
    Filesize

    12KB

  • memory/380-157-0x0000000005220000-0x0000000005239000-memory.dmp
    Filesize

    100KB

  • memory/380-151-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
    Filesize

    4KB

  • memory/380-156-0x00000000050E0000-0x00000000050E5000-memory.dmp
    Filesize

    20KB

  • memory/1328-152-0x0000000000000000-mapping.dmp
  • memory/1664-154-0x0000000000000000-mapping.dmp
  • memory/2384-163-0x0000000000820000-0x0000000000821000-memory.dmp
    Filesize

    4KB

  • memory/2384-160-0x0000000000000000-mapping.dmp
  • memory/2700-167-0x0000000000000000-mapping.dmp
  • memory/3216-127-0x0000000000000000-mapping.dmp
  • memory/3216-141-0x0000000009E90000-0x0000000009E91000-memory.dmp
    Filesize

    4KB

  • memory/3216-138-0x00000000059C0000-0x0000000005EBE000-memory.dmp
    Filesize

    5.0MB

  • memory/3216-140-0x0000000007880000-0x000000000788B000-memory.dmp
    Filesize

    44KB

  • memory/3216-139-0x00000000059C0000-0x0000000005EBE000-memory.dmp
    Filesize

    5.0MB

  • memory/3620-115-0x00000000006F0000-0x00000000006F1000-memory.dmp
    Filesize

    4KB

  • memory/3620-123-0x00000000063C0000-0x00000000063C1000-memory.dmp
    Filesize

    4KB

  • memory/3620-122-0x0000000006400000-0x0000000006401000-memory.dmp
    Filesize

    4KB

  • memory/3620-126-0x0000000005170000-0x000000000566E000-memory.dmp
    Filesize

    5.0MB

  • memory/3620-121-0x0000000006360000-0x0000000006381000-memory.dmp
    Filesize

    132KB

  • memory/3620-120-0x0000000005170000-0x000000000566E000-memory.dmp
    Filesize

    5.0MB

  • memory/3620-119-0x00000000052B0000-0x00000000052B1000-memory.dmp
    Filesize

    4KB

  • memory/3620-118-0x0000000005210000-0x0000000005211000-memory.dmp
    Filesize

    4KB

  • memory/3620-117-0x0000000005670000-0x0000000005671000-memory.dmp
    Filesize

    4KB

  • memory/4036-124-0x0000000000000000-mapping.dmp
  • memory/4240-125-0x0000000000000000-mapping.dmp