Overview

overview

10

Static

static

1

DHL_101261...df.exe

windows7_x64

10

DHL_101261...df.exe

windows10_x64

10

Analysis

  • max time kernel
    294s
  • max time network
    318s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 00:10

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General

  • Target

    DHL_1012617429350,pdf.exe

  • Size

    321KB

  • MD5

    66399e9799830e4375a90c7527d1643d

  • SHA1

    22bfe4f3525245ebbbe332b84f4c51f48f94fb20

  • SHA256

    59a7f37f860925d6b3d8c666d255ada96c5ea855fed304161da561d12616ae0a

  • SHA512

    d61fee25094a565f1cccc4c460c670ba620fca057f4baa7998b8560034d2ce90da58a1913c9a3ec399753f35bb34aa5f1276ed25fbb41f5dfad8f50ca1b11dfe

Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealersuricatatrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

bnbnnjhjkii.ddns.net:2355

Mutex

d78dbf2b-8a68-42bd-af35-aa036c54c154

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-07-31T13:54:02.204062736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    2355

  • default_group

    JIMNHJ

  • 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

    d78dbf2b-8a68-42bd-af35-aa036c54c154

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    bnbnnjhjkii.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.

    keyloggertrojanstealerspywarenanocore
  • suricata: ET MALWARE Possible NanoCore C2 60B

    suricata: ET MALWARE Possible NanoCore C2 60B

    suricata
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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.

  • Suspicious behavior: EnumeratesProcesses 4 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\DHL_1012617429350,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL_1012617429350,pdf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1596
    • C:\Users\Admin\AppData\Local\Temp\DHL_1012617429350,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL_1012617429350,pdf.exe"
      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
      PID:1812

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsi36B.tmp\mktt.dll
    MD5

    e854945c316606824456ff4e3b665b0a

    SHA1

    d75cb6c4920fea497da7c81483f80a0eb2a3782f

    SHA256

    7a45be75b03cd245e7cf13298652c4bd1d5c127a1511350c8ad0d01b41b6a074

    SHA512

    a7636949cbc68c6ba5418aa01b90c451460ad2d34d9bded53544df2bcae11a4f237038d988cc26eb2fc605c20e949c323f25f6ac04bf8a08d956c249b12d5bb9

    Download Submit

  • memory/1596-53-0x0000000075A71000-0x0000000075A73000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1812-55-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

    Download

  • memory/1812-56-0x000000000040188B-mapping.dmp

    Download

  • memory/1812-59-0x0000000001FE0000-0x0000000001FE1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1812-58-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

    Download

  • memory/1812-60-0x0000000001FE1000-0x0000000001FE2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1812-62-0x0000000001FE7000-0x0000000001FE8000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1812-61-0x0000000001FE2000-0x0000000001FE4000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1812-63-0x0000000001FE8000-0x0000000001FE9000-memory.dmp

    Filesize

    4KB

    Download