General
- Target 134BSG.exe
- Size 203KB
- Sample260802-hfzfcsem6s
- SHA256 6604ac4f4afab76f555db240489790a71395d849001cf4d31e1244bf11cd2ed0
- MD5 f4b18e4e209eb3c2b0dc2f8d669ec95c
- SHA1 9cc773b8f28de4e82b1c7971ed105a284a67a936
- SHA512 6c1f6296767a4825b54e90d55440621abaa34dbfa71ebfc495b891a869d6209d491ef4e85d1e3e951f4cc442b751b79af0b60c874612fd5b8a1ad03f368fcf9f
- SSDEEP 6144:sLV6Bta6dtJmakIM5JZmvN1onPN5rjfmQ1:sLV6BtpmkPvN1MNR11
- TLSH T1F814CF567BA98A2FE2DE8679601212129378C2E3D8C3F3DF28D855B65F177E10A470D3
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
134BSG.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
134BSG.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
wcat.io:443
-
www.wcat.io:443
-
37240c1b-85d2-47c4-ba71-8aee132bc5cf
-
activate_away_mode
true
-
backup_connection_host
www.wcat.io
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2026-05-14T06:21:35.227961536Z
-
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
443
-
default_group
Default
-
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
37240c1b-85d2-47c4-ba71-8aee132bc5cf
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
wcat.io
-
primary_dns_server
8.8.8.8
-
request_elevation
false
-
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
Targets
-
- Target 134BSG.exe
- Size 203KB
- SHA256 6604ac4f4afab76f555db240489790a71395d849001cf4d31e1244bf11cd2ed0
- MD5 f4b18e4e209eb3c2b0dc2f8d669ec95c
- SHA1 9cc773b8f28de4e82b1c7971ed105a284a67a936
- SHA512 6c1f6296767a4825b54e90d55440621abaa34dbfa71ebfc495b891a869d6209d491ef4e85d1e3e951f4cc442b751b79af0b60c874612fd5b8a1ad03f368fcf9f
- SSDEEP 6144:sLV6Bta6dtJmakIM5JZmvN1onPN5rjfmQ1:sLV6BtpmkPvN1MNR11
- TLSH T1F814CF567BA98A2FE2DE8679601212129378C2E3D8C3F3DF28D855B65F177E10A470D3
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Executes dropped EXE
-
Adds Run key to start application
-
Checks whether UAC is enabled
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1