Analysis
- max time kernel
120s - max time network
149s - platform
windows7_x64 - resource
win7-en-20211208 - submitted
14/01/2022, 05:12
General
- Target PO#0065026.doc.exe
- Size 1.5MB
- Sample220114-fvwlxaeffm
- SHA256 30e1ba61a63a27b668eee09f960a83d944e878c33b46f85ea86bacdf1427f4dd
Malware Config
Extracted
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nanocore
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1.2.2.0
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185.140.53.132:1604
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127.0.0.1:1604
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1122355e-5fe3-470d-a458-8c4cf0355482
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activate_away_mode
true
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backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
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buffer_size
65535
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build_time
2021-10-26T05:42:08.619849636Z
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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
1604
-
default_group
Default
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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
1122355e-5fe3-470d-a458-8c4cf0355482
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
185.140.53.132
-
primary_dns_server
8.8.8.8
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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.
- suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
- NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
- Nirsoft 3 IoCs
- Uses the VBS compiler for execution 1 TTPs
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 2 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 21 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 47 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.exe"C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.exe"C:\Users\Admin\AppData\Local\Temp\PO#0065026.doc.exe"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "SAAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA92B.tmp"3⤵
- Creates scheduled task(s)
-
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C:\Windows\SysWOW64\schtasks.exe"schtasks.exe" /create /f /tn "SAAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAA16.tmp"3⤵
- Creates scheduled task(s)
-
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\1zwfldan.pvi"3⤵
- Accesses Microsoft Outlook accounts
-
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\etf14dlg.n5j"3⤵
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\etf14dlg.n5j"3⤵
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\etf14dlg.n5j"3⤵
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\etf14dlg.n5j"3⤵
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\??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe"c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\etf14dlg.n5j"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/272-90-0x0000000000400000-0x000000000041B000-memory.dmp
memory/272-91-0x0000000000400000-0x000000000041B000-memory.dmp
memory/272-93-0x0000000076071000-0x0000000076073000-memory.dmp
memory/272-89-0x0000000000400000-0x000000000041B000-memory.dmp
memory/272-88-0x0000000000400000-0x000000000041B000-memory.dmp
memory/272-87-0x0000000000400000-0x000000000041B000-memory.dmp
memory/272-86-0x0000000000400000-0x000000000041B000-memory.dmp
memory/272-94-0x0000000000400000-0x000000000041B000-memory.dmp
memory/1096-73-0x0000000000770000-0x000000000077A000-memory.dmp
memory/1096-81-0x00000000047D0000-0x00000000047E0000-memory.dmp
memory/1096-65-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1096-69-0x0000000004940000-0x0000000004941000-memory.dmp
memory/1096-64-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1096-71-0x00000000006E0000-0x00000000006EA000-memory.dmp
memory/1096-72-0x0000000000810000-0x000000000082E000-memory.dmp
memory/1096-58-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1096-74-0x0000000000880000-0x0000000000892000-memory.dmp
memory/1096-75-0x0000000000B20000-0x0000000000B3A000-memory.dmp
memory/1096-76-0x0000000000D60000-0x0000000000D6E000-memory.dmp
memory/1096-77-0x0000000002180000-0x0000000002192000-memory.dmp
memory/1096-78-0x00000000022E0000-0x00000000022EE000-memory.dmp
memory/1096-79-0x00000000024A0000-0x00000000024AC000-memory.dmp
memory/1096-80-0x00000000047C0000-0x00000000047D4000-memory.dmp
memory/1096-59-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1096-82-0x0000000004820000-0x0000000004834000-memory.dmp
memory/1096-83-0x0000000004870000-0x000000000487E000-memory.dmp
memory/1096-84-0x0000000004AC0000-0x0000000004AEE000-memory.dmp
memory/1096-85-0x0000000004890000-0x00000000048A4000-memory.dmp
memory/1096-62-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1096-61-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1096-60-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1572-53-0x0000000000160000-0x00000000002EE000-memory.dmp
memory/1572-57-0x0000000007630000-0x000000000769C000-memory.dmp
memory/1572-56-0x00000000003B0000-0x00000000003C0000-memory.dmp
memory/1572-55-0x0000000007310000-0x0000000007311000-memory.dmp
memory/1572-54-0x0000000000160000-0x00000000002EE000-memory.dmp