Analysis
-
max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
17-04-2024 14:54
Static task
static1
Behavioral task
behavioral1
Sample
5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral3
Sample
ufyabb.exe
Resource
win7-20240221-en
General
-
Target
5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe
-
Size
584KB
-
MD5
051ce434ea8ea139cb3fc0cd61b21a99
-
SHA1
0ebb963dc8226ff95f26b90ae148fd02154ef39b
-
SHA256
5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b
-
SHA512
5566eab44fd5d2dac278d06015503c709e8f5154fe0b7a9d60ec47d75061ebfdd388005d771bf33a8bcf67f5d014076887832fd081045815118bf952e9b95ac0
-
SSDEEP
12288:ij34VVCbFKQNt4qQwhZ43CA2TxixwYl06HHbWJQSE88pvtmcSfWl:i8HW/eCrTAwYl06H7l391B
Malware Config
Extracted
nanocore
1.2.2.0
kennynanobelintourismedleonline.dumb1.com:7072
6b1312cb-72d0-4da8-8182-e917f5887e6c
-
activate_away_mode
true
- backup_connection_host
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2023-09-30T11:54:33.233317936Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
7072
-
default_group
Mr Smart
-
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
6b1312cb-72d0-4da8-8182-e917f5887e6c
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
kennynanobelintourismedleonline.dumb1.com
-
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
-
Executes dropped EXE 2 IoCs
Processes:
ufyabb.exeufyabb.exepid process 4512 ufyabb.exe 1484 ufyabb.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
ufyabb.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Acrobat = "C:\\Users\\Admin\\AppData\\Roaming\\Adobe\\Acrobat!.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\ufyabb.exe\" " ufyabb.exe -
Processes:
ufyabb.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA ufyabb.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
ufyabb.exedescription pid process target process PID 4512 set thread context of 1484 4512 ufyabb.exe ufyabb.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
ufyabb.exepid process 1484 ufyabb.exe 1484 ufyabb.exe 1484 ufyabb.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
ufyabb.exepid process 1484 ufyabb.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
ufyabb.exepid process 4512 ufyabb.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
ufyabb.exedescription pid process Token: SeDebugPrivilege 1484 ufyabb.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exeufyabb.exedescription pid process target process PID 4444 wrote to memory of 4512 4444 5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe ufyabb.exe PID 4444 wrote to memory of 4512 4444 5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe ufyabb.exe PID 4444 wrote to memory of 4512 4444 5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe ufyabb.exe PID 4512 wrote to memory of 1484 4512 ufyabb.exe ufyabb.exe PID 4512 wrote to memory of 1484 4512 ufyabb.exe ufyabb.exe PID 4512 wrote to memory of 1484 4512 ufyabb.exe ufyabb.exe PID 4512 wrote to memory of 1484 4512 ufyabb.exe ufyabb.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe"C:\Users\Admin\AppData\Local\Temp\5aad4e2ad582c6fe27f4f7d2a9c526115cf40f9227385cb9e2c5d160c85bf11b.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"C:\Users\Admin\AppData\Local\Temp\ufyabb.exe"3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\rdnhexth.cFilesize
304KB
MD55422b38bbfba1196cf692a1d6cbabd28
SHA16b6c03f98471ff2d01c047c4d167aa296050f405
SHA2565247cc6c9ca9dbab728327d290a76cd05be6cd74682dbec5f19e5a4934a58e03
SHA51208c874a7d0e46c1e4afc445d8335169b5836ebfec7bb2be9e7713868144c221feae2d1f6ea4cb32f1dfd27b2fde650d5d0569c47dafbc58de7fcd3eaada0f909
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C:\Users\Admin\AppData\Local\Temp\ufyabb.exeFilesize
526KB
MD5101a2de82607b0f99ef5d4a810896c9b
SHA134c52d9c349da842c27e76afb716227857a57cdb
SHA256d3aa0b25ae8642adba83223811333cada5ffeaad584b7391b03e0f7fb28d864f
SHA5122a62c1c7a319437f94f5f913f27a55a1274284eccdec5effa4689f9630ab64359c751375c8bac3d1af952bf2232a7230fa7044c6d1d588cc4f37c474117ee278
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memory/1484-13-0x0000000000400000-0x000000000044B000-memory.dmpFilesize
300KB
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memory/1484-8-0x0000000000400000-0x000000000044B000-memory.dmpFilesize
300KB
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memory/1484-10-0x0000000000400000-0x000000000044B000-memory.dmpFilesize
300KB
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memory/1484-12-0x0000000000400000-0x000000000044B000-memory.dmpFilesize
300KB
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memory/1484-14-0x0000000075230000-0x00000000757E1000-memory.dmpFilesize
5.7MB
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memory/1484-15-0x0000000075230000-0x00000000757E1000-memory.dmpFilesize
5.7MB
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memory/1484-16-0x0000000002720000-0x0000000002730000-memory.dmpFilesize
64KB
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memory/1484-17-0x0000000002720000-0x0000000002730000-memory.dmpFilesize
64KB
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memory/1484-18-0x0000000002720000-0x0000000002730000-memory.dmpFilesize
64KB
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memory/1484-20-0x0000000075230000-0x00000000757E1000-memory.dmpFilesize
5.7MB
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memory/1484-21-0x0000000002720000-0x0000000002730000-memory.dmpFilesize
64KB
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memory/1484-22-0x0000000002720000-0x0000000002730000-memory.dmpFilesize
64KB
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memory/4512-5-0x00000000016F0000-0x00000000016F2000-memory.dmpFilesize
8KB