Analysis
- max time kernel
78s - max time network
149s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
31/05/2023, 05:41
General
- Target e89323dd0063fb87b2115af014bbaf94.exe
- Size 1.1MB
- Sample230531-gdfd2ade31
- SHA256 70d856cfc4e27c7ca18c939fd13fb989a308c64c0cd78d5d6f07759cc355c3db
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
jasonbourneblack.ddns.net:4032
-
127.0.0.1:4032
-
540c4d56-ad4d-4ca4-9f9f-305dba1da640
-
activate_away_mode
true
-
backup_connection_host
127.0.0.1
-
backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2023-03-04T22:22:44.882758536Z
-
bypass_user_account_control
false
-
bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
4032
-
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
540c4d56-ad4d-4ca4-9f9f-305dba1da640
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
jasonbourneblack.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.
- 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
- 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 4 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.exe"C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.exe"C:\Users\Admin\AppData\Local\Temp\e89323dd0063fb87b2115af014bbaf94.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
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "IMAP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA9A8.tmp"3⤵
- Creates scheduled task(s)
-
-
C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "IMAP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAC19.tmp"3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmpA9A8.tmp
tmpAC19.tmp
memory/468-75-0x0000000000660000-0x00000000006A0000-memory.dmp
memory/468-80-0x0000000000530000-0x000000000054E000-memory.dmp
memory/468-97-0x0000000000660000-0x00000000006A0000-memory.dmp
memory/468-95-0x00000000048A0000-0x00000000048B4000-memory.dmp
memory/468-94-0x00000000047F0000-0x000000000481E000-memory.dmp
memory/468-61-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-62-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-63-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-79-0x0000000000500000-0x000000000050A000-memory.dmp
memory/468-64-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-66-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-68-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-70-0x0000000000400000-0x0000000000438000-memory.dmp
memory/468-93-0x00000000047D0000-0x00000000047DE000-memory.dmp
memory/468-92-0x00000000024B0000-0x00000000024C4000-memory.dmp
memory/468-91-0x0000000002280000-0x0000000002290000-memory.dmp
memory/468-65-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/468-90-0x0000000002270000-0x0000000002284000-memory.dmp
memory/468-81-0x0000000000520000-0x000000000052A000-memory.dmp
memory/468-84-0x00000000006A0000-0x00000000006B2000-memory.dmp
memory/468-85-0x0000000000990000-0x00000000009AA000-memory.dmp
memory/468-86-0x00000000009B0000-0x00000000009BE000-memory.dmp
memory/468-87-0x0000000000A10000-0x0000000000A22000-memory.dmp
memory/468-88-0x0000000000CD0000-0x0000000000CDE000-memory.dmp
memory/468-89-0x0000000000CE0000-0x0000000000CEC000-memory.dmp
memory/2000-55-0x00000000003F0000-0x0000000000404000-memory.dmp
memory/2000-54-0x0000000000A20000-0x0000000000B34000-memory.dmp
memory/2000-57-0x0000000004E00000-0x0000000004E40000-memory.dmp
memory/2000-56-0x0000000004E00000-0x0000000004E40000-memory.dmp
memory/2000-60-0x0000000005040000-0x00000000050B6000-memory.dmp
memory/2000-59-0x0000000004F40000-0x0000000004FEC000-memory.dmp
memory/2000-58-0x0000000000660000-0x000000000066A000-memory.dmp