General
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Target
Invoice NeededPDF.exe
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Size
1.1MB
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Sample
210728-23b8mlz2ej
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MD5
9cf504947d9ba331fb5d7dab266ded76
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SHA1
fbbdd9841da2b426c61db1772da07e9642a75f10
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SHA256
edb5f7136ced51208b8c6503f67f9b9153c4ac47a4876b32d82e69208de51509
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SHA512
d9f1d86a36d3ed9b6131036c3fac03ec3dc5dd0fb9c5bb255ba04adaf98297092071f83390d42a6e7b3c7ac81ee8f570f1aa4fbaf998829db57d29ed16abb7f9
Static task
static1
Behavioral task
behavioral1
Sample
Invoice NeededPDF.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
Invoice NeededPDF.exe
Resource
win10v20210408
Malware Config
Extracted
nanocore
1.2.2.0
sys2021.linkpc.net:11940
23.94.82.41:11940
de7e01ad-963b-4e14-81aa-08dfb351f0fe
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activate_away_mode
false
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backup_connection_host
23.94.82.41
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-04-24T08:14:59.254967636Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
11940
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default_group
Do
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
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lan_timeout
2500
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max_packet_size
1.048576e+07
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mutex
de7e01ad-963b-4e14-81aa-08dfb351f0fe
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mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
sys2021.linkpc.net
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primary_dns_server
8.8.8.8
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
false
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Targets
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Target
Invoice NeededPDF.exe
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Size
1.1MB
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MD5
9cf504947d9ba331fb5d7dab266ded76
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SHA1
fbbdd9841da2b426c61db1772da07e9642a75f10
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SHA256
edb5f7136ced51208b8c6503f67f9b9153c4ac47a4876b32d82e69208de51509
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SHA512
d9f1d86a36d3ed9b6131036c3fac03ec3dc5dd0fb9c5bb255ba04adaf98297092071f83390d42a6e7b3c7ac81ee8f570f1aa4fbaf998829db57d29ed16abb7f9
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Modifies WinLogon for persistence
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suricata: ET MALWARE Possible NanoCore C2 60B
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AgentTesla Payload
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Suspicious use of SetThreadContext
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