Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    03-07-2022 18:00

General

  • Target

    3b0c8c8ac8b8f8a63b32aa842e34a31351b0950243854360bd34306d3790a470.exe

  • Size

    783KB

  • MD5

    d542141f5e8cff74364315499d0c6b09

  • SHA1

    26e17c0e297439cf92e5328bea860e47e268f2ee

  • SHA256

    3b0c8c8ac8b8f8a63b32aa842e34a31351b0950243854360bd34306d3790a470

  • SHA512

    3fa524c824b0510d6047225db9dc058b6e9bca0d330d444c987490a0cfb157e49804d915dd055c509051e5f55f31fd89750cef03ece92e7e5c5cd6d184346f6b

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

johnie3m.hopto.org:9497

doc5.duckdns.org:9497

Mutex

ed0ed031-dcf3-465d-8131-5a774c0aef5e

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    doc5.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-06-15T12:47:21.826742436Z

  • 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

    9497

  • default_group

    JOHNIE WALKER

  • 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

    ed0ed031-dcf3-465d-8131-5a774c0aef5e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    johnie3m.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.

  • 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 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3b0c8c8ac8b8f8a63b32aa842e34a31351b0950243854360bd34306d3790a470.exe
    "C:\Users\Admin\AppData\Local\Temp\3b0c8c8ac8b8f8a63b32aa842e34a31351b0950243854360bd34306d3790a470.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bJndYFgryrJkt" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA323.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1708
    • C:\Users\Admin\AppData\Local\Temp\3b0c8c8ac8b8f8a63b32aa842e34a31351b0950243854360bd34306d3790a470.exe
      "C:\Users\Admin\AppData\Local\Temp\3b0c8c8ac8b8f8a63b32aa842e34a31351b0950243854360bd34306d3790a470.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
      • Suspicious use of WriteProcessMemory
      PID:1720
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DSL Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAD12.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:560
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DSL Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB34A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1632

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\Temp\tmpA323.tmp
    Filesize

    1KB

    MD5

    35ec9498a9c56e5eab0e15365c323412

    SHA1

    a79a6b00c1a373b4469772767167812d33a75f3f

    SHA256

    aaf46cd77f3de8b6827e5a81eaab6131b43ba93ad607f794d67f268ed67932f5

    SHA512

    b437cf430213060aee4c05e3870e13da145199ac7f6785c231cecd39cbe3a1a00cf42c748c7331fc25d5bfa9bcc1936bd5a7edfc1ef1bba2bcba80a73b8b4254

  • C:\Users\Admin\AppData\Local\Temp\tmpAD12.tmp
    Filesize

    1KB

    MD5

    9515bccbbcbf88ad17943b532172dd0c

    SHA1

    1096c156d77794f7726b23c887045b7629f0c5b6

    SHA256

    0b2ec31fcf10f824a4fe8848f5fff96d23bba68031503f0a7ae460bc691b0826

    SHA512

    bf3901c9e741d859c376c1c48756ffb24b438b25f5b83092a2f1904a33e66c4239913728046d6f4fc9ee1f27132e4e9279482ab40e91f149909e849dad4d28ee

  • C:\Users\Admin\AppData\Local\Temp\tmpB34A.tmp
    Filesize

    1KB

    MD5

    f34c9976546ad9fc8624117687e1b732

    SHA1

    df5de84989e77f019a10e10f2e8a44bca2dc620d

    SHA256

    d524ed3f3648a50ab92cf755461af48ed0c973a3edfba3a4cd0fad3d2e833183

    SHA512

    cd90ca19818bcdf0ec6ee9bafd47749e87ffb8f5c4711ef6c73483acf73399b2ab8c7b55f98303fcce409591647741ceb2ddd7b399ad62b2f5b18ed5378c8260

  • memory/560-74-0x0000000000000000-mapping.dmp
  • memory/1512-55-0x0000000076421000-0x0000000076423000-memory.dmp
    Filesize

    8KB

  • memory/1512-56-0x0000000000530000-0x0000000000540000-memory.dmp
    Filesize

    64KB

  • memory/1512-57-0x0000000000F70000-0x0000000000FCC000-memory.dmp
    Filesize

    368KB

  • memory/1512-58-0x0000000004B40000-0x0000000004B7C000-memory.dmp
    Filesize

    240KB

  • memory/1512-54-0x0000000001220000-0x00000000012EA000-memory.dmp
    Filesize

    808KB

  • memory/1632-76-0x0000000000000000-mapping.dmp
  • memory/1708-59-0x0000000000000000-mapping.dmp
  • memory/1720-67-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-68-0x000000000041E792-mapping.dmp
  • memory/1720-70-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-72-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-65-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-62-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1720-78-0x0000000000450000-0x000000000045A000-memory.dmp
    Filesize

    40KB

  • memory/1720-79-0x0000000000460000-0x000000000047E000-memory.dmp
    Filesize

    120KB

  • memory/1720-80-0x0000000000580000-0x000000000058A000-memory.dmp
    Filesize

    40KB