Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-09-2024 01:20

General

  • Target

    REVISE_RECBTAAH-PI.exe

  • Size

    676KB

  • MD5

    d0c54245dc16324c9170c419f2500737

  • SHA1

    642c7dd025dc31d39b26af7a7be53ba617e78bd4

  • SHA256

    6c22578a9080fc7f38d949df46f1bb88f386fd17ad76d78cac31e5b7782a2685

  • SHA512

    1e95e9efc025c53192de36154f51198181ec445145fdfe7f3b1afc83956cc49a04cbd9c6d318dde926da27057cf149565f5de5cb4208cfa78e01eef3f1f582e4

  • SSDEEP

    12288:49TK3cUmdavrlTGt5jw0LECUfE1F1Yl7tpkA1A9:0K3cFd6JNbDc13SHkG

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

45.66.231.103:7754

7754.hopto.org:7754

Mutex

cee2b15d-82f8-4d85-8dc9-22fd50400675

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    7754.hopto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-06-21T07:47:09.033387236Z

  • 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

    7754

  • default_group

    7754Nano

  • 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

    cee2b15d-82f8-4d85-8dc9-22fd50400675

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    45.66.231.103

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe
    "C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1520
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\oFNArmC.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1156
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oFNArmC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp14F5.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4292
    • C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe
      "C:\Users\Admin\AppData\Local\Temp\REVISE_RECBTAAH-PI.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:760
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SMTP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1A35.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2156
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SMTP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2216.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4752

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wggrnoho.mnz.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp14F5.tmp

    Filesize

    1KB

    MD5

    c22800e1ba41852ba43f41673390972e

    SHA1

    7e6c157428558f0e6065cd22e6a266a5bd9fa36f

    SHA256

    1521d3e01f08addf9585d5df2b40700a56d956e2adc91946c55cefcbf1a980d2

    SHA512

    e8eba086045070e1f14debe446f64f64ca1cec6e0b1729fb37c14bb4be91db84fb6870ccb6a588d71a96c8d1aefa7081b2db162790fa2425f1fe2dbf1008bd33

  • C:\Users\Admin\AppData\Local\Temp\tmp1A35.tmp

    Filesize

    1KB

    MD5

    6f7560bbdc552da8ecfe72886865afcf

    SHA1

    12a6ca08cd14fabeb51cf51b08f0ef0e0ba79591

    SHA256

    eb97db02099f25f5dd11e261332a13cb1c3ae3d5b9a0568ffbae797d35cc60cb

    SHA512

    04b41d85b00806697f3f8951eb99edfe559baa6bf81f77787b64b4e5cd2b3f5dce2b0120d58fb18dc9ee051486bac706618063781b51095ab7fcb008755ce679

  • C:\Users\Admin\AppData\Local\Temp\tmp2216.tmp

    Filesize

    1KB

    MD5

    b3b017f9df206021717a11f11d895402

    SHA1

    e4ea12823af6550ee634536eec1eb14490580a3b

    SHA256

    654dfce2c28024364e679e1b958f3fb81fc6d29685d534d905d1c83a84351024

    SHA512

    95666cb81aa1fd1ade04a32f63381ce8bff274d7d300c0b59cbb10a294c4d1eebaa3000365a2000b38793de030044995cf23e623c5e3648d9b00501f97ff9343

  • memory/760-60-0x0000000005950000-0x000000000595A000-memory.dmp

    Filesize

    40KB

  • memory/760-58-0x0000000005610000-0x000000000561A000-memory.dmp

    Filesize

    40KB

  • memory/760-59-0x0000000006580000-0x000000000659E000-memory.dmp

    Filesize

    120KB

  • memory/760-45-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1156-61-0x0000000006CD0000-0x0000000006D02000-memory.dmp

    Filesize

    200KB

  • memory/1156-85-0x0000000007050000-0x000000000706A000-memory.dmp

    Filesize

    104KB

  • memory/1156-97-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-90-0x0000000007290000-0x00000000072A4000-memory.dmp

    Filesize

    80KB

  • memory/1156-87-0x00000000072D0000-0x0000000007366000-memory.dmp

    Filesize

    600KB

  • memory/1156-86-0x00000000070C0000-0x00000000070CA000-memory.dmp

    Filesize

    40KB

  • memory/1156-19-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-84-0x00000000076A0000-0x0000000007D1A000-memory.dmp

    Filesize

    6.5MB

  • memory/1156-73-0x0000000006F10000-0x0000000006FB3000-memory.dmp

    Filesize

    652KB

  • memory/1156-62-0x00000000753C0000-0x000000007540C000-memory.dmp

    Filesize

    304KB

  • memory/1156-72-0x00000000062E0000-0x00000000062FE000-memory.dmp

    Filesize

    120KB

  • memory/1156-25-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1156-50-0x0000000005DA0000-0x0000000005DEC000-memory.dmp

    Filesize

    304KB

  • memory/1156-49-0x0000000005D10000-0x0000000005D2E000-memory.dmp

    Filesize

    120KB

  • memory/1156-46-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-91-0x0000000007C20000-0x0000000007C3A000-memory.dmp

    Filesize

    104KB

  • memory/1520-89-0x0000000007B10000-0x0000000007B1E000-memory.dmp

    Filesize

    56KB

  • memory/1520-15-0x0000000005020000-0x0000000005056000-memory.dmp

    Filesize

    216KB

  • memory/1520-36-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-98-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-92-0x0000000007C00000-0x0000000007C08000-memory.dmp

    Filesize

    32KB

  • memory/1520-24-0x0000000005EF0000-0x0000000006244000-memory.dmp

    Filesize

    3.3MB

  • memory/1520-16-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-18-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/1520-88-0x0000000007AE0000-0x0000000007AF1000-memory.dmp

    Filesize

    68KB

  • memory/1520-21-0x00000000055E0000-0x0000000005602000-memory.dmp

    Filesize

    136KB

  • memory/1520-22-0x0000000005CC0000-0x0000000005D26000-memory.dmp

    Filesize

    408KB

  • memory/1520-17-0x0000000005690000-0x0000000005CB8000-memory.dmp

    Filesize

    6.2MB

  • memory/1520-74-0x00000000753C0000-0x000000007540C000-memory.dmp

    Filesize

    304KB

  • memory/1520-23-0x0000000005D30000-0x0000000005D96000-memory.dmp

    Filesize

    408KB

  • memory/3008-5-0x0000000005800000-0x000000000580A000-memory.dmp

    Filesize

    40KB

  • memory/3008-10-0x000000000AC30000-0x000000000ACCC000-memory.dmp

    Filesize

    624KB

  • memory/3008-9-0x0000000006D30000-0x0000000006DAA000-memory.dmp

    Filesize

    488KB

  • memory/3008-0-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

    Filesize

    4KB

  • memory/3008-2-0x0000000005DF0000-0x0000000006394000-memory.dmp

    Filesize

    5.6MB

  • memory/3008-3-0x0000000005840000-0x00000000058D2000-memory.dmp

    Filesize

    584KB

  • memory/3008-4-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3008-7-0x0000000074B1E000-0x0000000074B1F000-memory.dmp

    Filesize

    4KB

  • memory/3008-6-0x0000000005C50000-0x0000000005C60000-memory.dmp

    Filesize

    64KB

  • memory/3008-1-0x0000000000DB0000-0x0000000000E60000-memory.dmp

    Filesize

    704KB

  • memory/3008-8-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB

  • memory/3008-48-0x0000000074B10000-0x00000000752C0000-memory.dmp

    Filesize

    7.7MB