Analysis

  • max time kernel
    104s
  • max time network
    154s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01-09-2022 02:54

General

  • Target

    95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3.exe

  • Size

    984KB

  • MD5

    f1f25aa7e3a1c8927b22c6e094efe659

  • SHA1

    22170983c839eba4ac6eb4a4e0859bc0aa8db72f

  • SHA256

    95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3

  • SHA512

    581e708e443477a3fab48d57f7135d2e91da704700102770a9b85522fb84902f38592cdb1915a9f90176771c42ebceb223d32c68653557adc88177143ca0c4bf

  • SSDEEP

    24576:eZ5NXY+mzo3bvfxjKqM46I58c3wlH8Kci:o5xlmzM3lN5HAGS

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

kasawulli845.ddns.net:5211

127.0.0.1:5211

Mutex

d4cfd040-7e1e-457d-bd2d-3dc785b0760c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-05-29T06:31:10.522487936Z

  • 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

    5211

  • default_group

    AUGFILE

  • 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

    d4cfd040-7e1e-457d-bd2d-3dc785b0760c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    kasawulli845.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.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • 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 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3.exe
    "C:\Users\Admin\AppData\Local\Temp\95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Users\Admin\AppData\Local\Temp\95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3.exe
      "C:\Users\Admin\AppData\Local\Temp\95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4192
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WAN Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp55FF.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:5052
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WAN Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5749.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1712
      • \??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe
        "c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\ibnflvcs.hs4"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:4900
      • \??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe
        "c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\kcr2ouvz.xxq"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:848

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\95a0fb783d47c26afd70681fa8a83341bca1d0a1e4f6c96f8cc98b8e24bd6af3.exe.log

    Filesize

    1KB

    MD5

    12557ab909651a6f99d3503d614d3562

    SHA1

    b86745768059a514bea3a438e1e96086af463246

    SHA256

    9589c869703e95d40d5870c60f66d8460f7914e9fe8dd579533c84148112babd

    SHA512

    10cdb2fa7cf054af937b4aeddfe16fe755d6b09db5a51f7052adbf472b4b435e16c141f3712762f3b67f990c3efcfa47659576988e321214c747d6cd98e75521

  • C:\Users\Admin\AppData\Local\Temp\ibnflvcs.hs4

    Filesize

    523B

    MD5

    69b2a2e17e78d24abee9f1de2f04811a

    SHA1

    d19c109704e83876ab3527457f9418a7d053aa33

    SHA256

    1b1491f21e64681f8fdc27b2265e2274fb7813eecb6ad8b446d2e431f6300edd

    SHA512

    eb7269979bc4187520636fe3d7b3089f2c7c02e81c4ce2a738ade680f72c61c67fe9577eeaa09d3ca93f34b60be8c434d2cfbfed6566e783f6611279f056150f

  • C:\Users\Admin\AppData\Local\Temp\kcr2ouvz.xxq

    Filesize

    3KB

    MD5

    02524418240369b25b988e9884cd1c54

    SHA1

    42a33322d952edf6d8431d4cd788bbc863d2b890

    SHA256

    80b2a0874c2f734dfe1196d7ae2a7bc6ccb30df2d9281513ac33edc529a71a37

    SHA512

    7c5bbe911f7f0b072d6fdb89ea5759655c2b5cf9ebfddff8f2f67f956141b8ed3697ab0504f60c3992849afbbc79434043a6c04d7cf6ddd958e23354fd3a698f

  • C:\Users\Admin\AppData\Local\Temp\tmp55FF.tmp

    Filesize

    1KB

    MD5

    53ffb1a3fad4ec6d3240c0f08acf612e

    SHA1

    cfd9c55e0a76ea524aaec1f42dbe3eaca5143776

    SHA256

    9ca0e47ee0fdd6a6c8b972d3481a169f9e0d4b5073e4fef0bd357d6de16643b6

    SHA512

    11b99987befe164b5ca9a65a110023f044ef4169dd2d5fc1a3da3aea76e8ac4640ec2c2ef2f5816f839a07325b49229151ee4b7836e62ee9cdf393c17b54188d

  • C:\Users\Admin\AppData\Local\Temp\tmp5749.tmp

    Filesize

    1KB

    MD5

    f3cda3e6bab1951e8d59c3eb775a14c6

    SHA1

    434c1ec851a45c0505fd8fd28159f549e2e9adfd

    SHA256

    067d3f5167cab2ea4e76f59386df4eaf49c6008f6451e1971274a938ad7bcf44

    SHA512

    bc79446e4e0204c04abcacef6799aeafe7915c1a5c6bdb3573ba40370d6a6a1e2590eb6315151d12a9447970f993a17463442c5dc0ba97c58df17dddfd73d62c

  • memory/848-417-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/848-414-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/848-365-0x0000000000442628-mapping.dmp

  • memory/1712-261-0x0000000000000000-mapping.dmp

  • memory/2728-165-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-144-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-126-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-127-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-128-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-129-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-130-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-132-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-131-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-133-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-134-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-135-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-136-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-137-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-138-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-139-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-140-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-141-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-142-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-143-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-171-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-145-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-146-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-147-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-148-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-149-0x0000000000F60000-0x000000000105C000-memory.dmp

    Filesize

    1008KB

  • memory/2728-150-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-151-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-152-0x0000000005F10000-0x000000000640E000-memory.dmp

    Filesize

    5.0MB

  • memory/2728-153-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-170-0x0000000005880000-0x000000000588A000-memory.dmp

    Filesize

    40KB

  • memory/2728-155-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-156-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-157-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-158-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-159-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-160-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-161-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-163-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-162-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-164-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-115-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-166-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-167-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-168-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-169-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-154-0x00000000058B0000-0x0000000005942000-memory.dmp

    Filesize

    584KB

  • memory/2728-125-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-175-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-173-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-174-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-172-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-176-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-177-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-178-0x0000000005B50000-0x0000000005B68000-memory.dmp

    Filesize

    96KB

  • memory/2728-179-0x00000000014F0000-0x00000000014FC000-memory.dmp

    Filesize

    48KB

  • memory/2728-180-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-181-0x0000000009070000-0x0000000009104000-memory.dmp

    Filesize

    592KB

  • memory/2728-182-0x00000000091A0000-0x000000000923C000-memory.dmp

    Filesize

    624KB

  • memory/2728-183-0x0000000009240000-0x00000000092A6000-memory.dmp

    Filesize

    408KB

  • memory/2728-184-0x0000000001660000-0x000000000169A000-memory.dmp

    Filesize

    232KB

  • memory/2728-116-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-117-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-119-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-118-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-189-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-124-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-120-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-123-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-122-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/2728-121-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/4192-185-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4192-287-0x0000000006220000-0x000000000622A000-memory.dmp

    Filesize

    40KB

  • memory/4192-299-0x0000000006A00000-0x0000000006A0C000-memory.dmp

    Filesize

    48KB

  • memory/4192-294-0x0000000006980000-0x0000000006992000-memory.dmp

    Filesize

    72KB

  • memory/4192-295-0x0000000006990000-0x00000000069AA000-memory.dmp

    Filesize

    104KB

  • memory/4192-296-0x00000000069D0000-0x00000000069DE000-memory.dmp

    Filesize

    56KB

  • memory/4192-297-0x00000000069E0000-0x00000000069F2000-memory.dmp

    Filesize

    72KB

  • memory/4192-298-0x00000000069F0000-0x00000000069FE000-memory.dmp

    Filesize

    56KB

  • memory/4192-303-0x0000000006B90000-0x0000000006B9E000-memory.dmp

    Filesize

    56KB

  • memory/4192-285-0x0000000005690000-0x00000000056AE000-memory.dmp

    Filesize

    120KB

  • memory/4192-301-0x0000000006B60000-0x0000000006B70000-memory.dmp

    Filesize

    64KB

  • memory/4192-300-0x0000000006A10000-0x0000000006A24000-memory.dmp

    Filesize

    80KB

  • memory/4192-302-0x0000000006B70000-0x0000000006B84000-memory.dmp

    Filesize

    80KB

  • memory/4192-304-0x0000000006BA0000-0x0000000006BCE000-memory.dmp

    Filesize

    184KB

  • memory/4192-305-0x0000000006BE0000-0x0000000006BF4000-memory.dmp

    Filesize

    80KB

  • memory/4192-284-0x00000000052D0000-0x00000000052DA000-memory.dmp

    Filesize

    40KB

  • memory/4192-186-0x000000000041E792-mapping.dmp

  • memory/4192-187-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/4192-188-0x0000000077D30000-0x0000000077EBE000-memory.dmp

    Filesize

    1.6MB

  • memory/4900-362-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4900-314-0x0000000000411654-mapping.dmp

  • memory/5052-242-0x0000000000000000-mapping.dmp