Analysis

  • max time kernel
    139s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-04-2024 09:42

General

  • Target

    POP.exe

  • Size

    660KB

  • MD5

    46d06b32a50fd0c1a1981695e6504aa5

  • SHA1

    562f1b0f554ab339d851e7c031059d20a1c88af6

  • SHA256

    3796fdf35ca6c4557746dc1de61e477fe9972bc44a2fb23503e302c27fab4335

  • SHA512

    c6ff00d37a3d8f8716df5a67d5f6e16bec0ec1a5ea4625138651ca8bc43ffda9e4ff77c158803d3399aa7543ec88dd37551215f60e159d226ac307cfd6e4cb44

  • SSDEEP

    12288:nYIPXjeFKYoJyZTH5Zx161j9QMRLPfVtc1qHNanyP8POCxU:nYIPGKYokbF01j9b1tcoMyP8POCy

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

amechi.duckdns.org:4190

Mutex

1e951a16-0899-4a49-9bed-fad9fc6657d1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    amechi.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-02-05T10:09:03.565293536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4190

  • default_group

    clement

  • 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

    1e951a16-0899-4a49-9bed-fad9fc6657d1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    amechi.duckdns.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.

  • 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).

  • Program crash 1 IoCs
  • 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 18 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\POP.exe
    "C:\Users\Admin\AppData\Local\Temp\POP.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4960
    • 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\POP.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3244
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CXAoYUE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5088
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CXAoYUE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAF4B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2472
    • C:\Users\Admin\AppData\Local\Temp\POP.exe
      "C:\Users\Admin\AppData\Local\Temp\POP.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:4376
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 1752
      2⤵
      • Program crash
      PID:3548
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4960 -ip 4960
    1⤵
      PID:3896

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      34f039addc5f467109344f2e21034e7b

      SHA1

      106365c7d342508bd241c02e874904b54803d5a7

      SHA256

      e6231450201faf94e22f4ca77ad8f9e9533e24c60a3fd975ed84a28994aafdf9

      SHA512

      d47c227dcfc823fb91bef520e065ed083be6365187f53e37c41f89687bbd6afe5c5ee4f12f09d212fc049f31689fba0eba0f0e7ee21ec7fd278f6d8ecca58da0

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_okaqyg3e.pxi.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmpAF4B.tmp

      Filesize

      1KB

      MD5

      607eb5a492eab726534ac15ef2af035c

      SHA1

      72b98f29b5e96824013b6f52b7e41af619135f21

      SHA256

      27967da3144d853cfbd41861ceba99f369cc933cb8ed7deb5ccea80c76e47da1

      SHA512

      0f42594efe7e9af27785d1fb4c5ae9bbad7631d4488df7d48f852c9eb634ae76c832a969d5d21e45513e88cd430625471066aaed22c03a5f560e8a9f2086b8f4

    • memory/3244-15-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/3244-17-0x00000000053F0000-0x0000000005400000-memory.dmp

      Filesize

      64KB

    • memory/3244-88-0x0000000007A50000-0x0000000007A6A000-memory.dmp

      Filesize

      104KB

    • memory/3244-86-0x00000000053F0000-0x0000000005400000-memory.dmp

      Filesize

      64KB

    • memory/3244-84-0x00000000053F0000-0x0000000005400000-memory.dmp

      Filesize

      64KB

    • memory/3244-96-0x0000000007D70000-0x0000000007D78000-memory.dmp

      Filesize

      32KB

    • memory/3244-14-0x0000000002E00000-0x0000000002E36000-memory.dmp

      Filesize

      216KB

    • memory/3244-16-0x0000000005A30000-0x0000000006058000-memory.dmp

      Filesize

      6.2MB

    • memory/3244-50-0x0000000006720000-0x000000000673E000-memory.dmp

      Filesize

      120KB

    • memory/3244-103-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/3244-19-0x00000000053F0000-0x0000000005400000-memory.dmp

      Filesize

      64KB

    • memory/3244-71-0x000000006FC00000-0x000000006FC4C000-memory.dmp

      Filesize

      304KB

    • memory/3244-21-0x0000000005960000-0x0000000005982000-memory.dmp

      Filesize

      136KB

    • memory/3244-58-0x0000000006CF0000-0x0000000006D22000-memory.dmp

      Filesize

      200KB

    • memory/3244-60-0x000000007FC60000-0x000000007FC70000-memory.dmp

      Filesize

      64KB

    • memory/3244-92-0x0000000007C50000-0x0000000007C61000-memory.dmp

      Filesize

      68KB

    • memory/3244-35-0x00000000060D0000-0x0000000006136000-memory.dmp

      Filesize

      408KB

    • memory/3244-24-0x0000000006060000-0x00000000060C6000-memory.dmp

      Filesize

      408KB

    • memory/3244-93-0x0000000007C80000-0x0000000007C8E000-memory.dmp

      Filesize

      56KB

    • memory/3244-54-0x0000000006BD0000-0x0000000006C1C000-memory.dmp

      Filesize

      304KB

    • memory/4376-110-0x0000000006B50000-0x0000000006B62000-memory.dmp

      Filesize

      72KB

    • memory/4376-105-0x0000000005540000-0x0000000005550000-memory.dmp

      Filesize

      64KB

    • memory/4376-48-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/4376-104-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/4376-45-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/4376-53-0x0000000005530000-0x000000000553A000-memory.dmp

      Filesize

      40KB

    • memory/4376-113-0x0000000006B80000-0x0000000006B94000-memory.dmp

      Filesize

      80KB

    • memory/4376-55-0x0000000005B10000-0x0000000005B2E000-memory.dmp

      Filesize

      120KB

    • memory/4376-56-0x0000000005B30000-0x0000000005B3A000-memory.dmp

      Filesize

      40KB

    • memory/4376-107-0x0000000006B00000-0x0000000006B12000-memory.dmp

      Filesize

      72KB

    • memory/4376-114-0x0000000006B90000-0x0000000006BA0000-memory.dmp

      Filesize

      64KB

    • memory/4376-112-0x0000000006B70000-0x0000000006B7E000-memory.dmp

      Filesize

      56KB

    • memory/4376-108-0x0000000006B10000-0x0000000006B2A000-memory.dmp

      Filesize

      104KB

    • memory/4376-115-0x0000000006BB0000-0x0000000006BC4000-memory.dmp

      Filesize

      80KB

    • memory/4376-111-0x0000000006B60000-0x0000000006B6C000-memory.dmp

      Filesize

      48KB

    • memory/4376-109-0x0000000006B40000-0x0000000006B4E000-memory.dmp

      Filesize

      56KB

    • memory/4960-47-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/4960-8-0x0000000007160000-0x00000000071DA000-memory.dmp

      Filesize

      488KB

    • memory/4960-0-0x0000000000E10000-0x0000000000EBC000-memory.dmp

      Filesize

      688KB

    • memory/4960-7-0x0000000006BD0000-0x0000000006BE4000-memory.dmp

      Filesize

      80KB

    • memory/4960-57-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/4960-6-0x0000000006BA0000-0x0000000006BC0000-memory.dmp

      Filesize

      128KB

    • memory/4960-9-0x000000000DAB0000-0x000000000DB4C000-memory.dmp

      Filesize

      624KB

    • memory/4960-49-0x0000000005870000-0x0000000005880000-memory.dmp

      Filesize

      64KB

    • memory/4960-5-0x00000000058A0000-0x00000000058AA000-memory.dmp

      Filesize

      40KB

    • memory/4960-4-0x0000000005870000-0x0000000005880000-memory.dmp

      Filesize

      64KB

    • memory/4960-3-0x00000000058D0000-0x0000000005962000-memory.dmp

      Filesize

      584KB

    • memory/4960-2-0x0000000005E80000-0x0000000006424000-memory.dmp

      Filesize

      5.6MB

    • memory/4960-1-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/5088-22-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB

    • memory/5088-95-0x0000000007370000-0x000000000738A000-memory.dmp

      Filesize

      104KB

    • memory/5088-94-0x0000000007270000-0x0000000007284000-memory.dmp

      Filesize

      80KB

    • memory/5088-91-0x00000000072B0000-0x0000000007346000-memory.dmp

      Filesize

      600KB

    • memory/5088-102-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/5088-89-0x00000000070A0000-0x00000000070AA000-memory.dmp

      Filesize

      40KB

    • memory/5088-87-0x0000000007670000-0x0000000007CEA000-memory.dmp

      Filesize

      6.5MB

    • memory/5088-73-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB

    • memory/5088-85-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB

    • memory/5088-74-0x0000000006F30000-0x0000000006FD3000-memory.dmp

      Filesize

      652KB

    • memory/5088-72-0x000000007FB90000-0x000000007FBA0000-memory.dmp

      Filesize

      64KB

    • memory/5088-70-0x00000000062F0000-0x000000000630E000-memory.dmp

      Filesize

      120KB

    • memory/5088-59-0x000000006FC00000-0x000000006FC4C000-memory.dmp

      Filesize

      304KB

    • memory/5088-44-0x0000000005810000-0x0000000005B64000-memory.dmp

      Filesize

      3.3MB

    • memory/5088-20-0x0000000075320000-0x0000000075AD0000-memory.dmp

      Filesize

      7.7MB

    • memory/5088-18-0x0000000004790000-0x00000000047A0000-memory.dmp

      Filesize

      64KB