Analysis

  • max time kernel
    147s
  • max time network
    195s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 02:28

General

  • Target

    DHL-#AWB130501923096PDF.exe

  • Size

    414KB

  • MD5

    1a4bf9b4501a87d22ad6bfc7abd91daf

  • SHA1

    6d9fb911e49b3c97cdb448dbb71513b119484c23

  • SHA256

    ff29de48c0798fcecbb3113c5d53229c9250b9950a1336c49c1e21434ef20203

  • SHA512

    cd1fb7ab9de8a2ed9a86fce6f51c62a6c802dd03bc3b4795962c498ad12c5aaafc31946a8745f63855b0592167b7310774f4e368b8b650935fdb62ca0afa8e90

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.165.153.247:5678

grace147.ddns.net:5678

Mutex

bb5979e4-6524-4144-a4bb-47ead86d7eef

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    grace147.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-03-07T00:51:33.782958036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5678

  • default_group

    GRACE

  • 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

    bb5979e4-6524-4144-a4bb-47ead86d7eef

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    185.165.153.247

  • 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.

  • 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 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL-#AWB130501923096PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL-#AWB130501923096PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XJcamAcfEc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA017.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1732
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:852

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

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA017.tmp
    Filesize

    1KB

    MD5

    2aae350f83f5160776a02cd5e6ffe261

    SHA1

    701c1ec0ae7e37a9c0a9dfdbd12cab7dfcfd5329

    SHA256

    c01d84e97f2113db7c91b09d98c7da2a936e8944b383ddd12c29be3cf88d450a

    SHA512

    afdd1fe3f26abbd5c386ba201e3bc530c22bbb26494f1a38f672958a44d555dc686c7091dbacf4ff1fbdf7305de123224ff0e691ffdcafca90a7a38edd77ee92

  • memory/316-55-0x0000000074860000-0x0000000074E0B000-memory.dmp
    Filesize

    5.7MB

  • memory/316-54-0x0000000076171000-0x0000000076173000-memory.dmp
    Filesize

    8KB

  • memory/852-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-58-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-59-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-62-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-65-0x000000000041E792-mapping.dmp
  • memory/852-67-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-69-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/852-71-0x00000000742B0000-0x000000007485B000-memory.dmp
    Filesize

    5.7MB

  • memory/852-72-0x0000000000A86000-0x0000000000A97000-memory.dmp
    Filesize

    68KB

  • memory/1732-56-0x0000000000000000-mapping.dmp