nanocore | f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd

General

Target

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe
Size

3.3MB
MD5

b5cb2e972a0d15d113133d55d8fa9494
SHA1

cc307c7ccb5fc8ddb4aabfff18527804aeb1c077
SHA256

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd
SHA512

1370f52424d7635783cefda3333cce4efdbf2397b01ff251c6c8e4dd2bc32f5471211634da8c1fc271a4a83c2c49570ff8b5363838507d9b4b8f58290748120a
SSDEEP

12288:diy5BPaY1yG1wsKYeuELZ41ypSP+j/hfdeChoB3Lopc6iH7zd:n5BPaIyPB/Fqy4Gj/Xrhyoc6iHV

Score

10^/10

nanocore evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

3654.ddns.net:3654

10.9.0.118:3654

Mutex

08b979e3-5178-4508-8fee-8691cecb4a52

Attributes

activate_away_mode
true
backup_connection_host
10.9.0.118
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2024-04-20T00:01:40.250540136Z
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
3654
default_group
Nan
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
08b979e3-5178-4508-8fee-8691cecb4a52
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
3654.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.
keylogger trojan stealer spyware nanocore

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2156 powershell.exe

pid	process
2156	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

regsvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Monitor = "C:\\Program Files (x86)\\SMTP Monitor\\smtpmon.exe"	regsvcs.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

description	pid	process	target process
PID 2816 set thread context of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

regsvcs.exe

description	ioc	process
File created	C:\Program Files (x86)\SMTP Monitor\smtpmon.exe	regsvcs.exe
File opened for modification	C:\Program Files (x86)\SMTP Monitor\smtpmon.exe	regsvcs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

364 schtasks.exe
916 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeregsvcs.exe

pid process

2156 powershell.exe
2620 regsvcs.exe
2620 regsvcs.exe
2620 regsvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regsvcs.exe

pid process

2620 regsvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeregsvcs.exe

description pid process

Token: SeDebugPrivilege 2156 powershell.exe
Token: SeDebugPrivilege 2620 regsvcs.exe

pid	process
364	schtasks.exe
916	schtasks.exe

pid	process
2156	powershell.exe
2620	regsvcs.exe
2620	regsvcs.exe
2620	regsvcs.exe

pid	process
2620	regsvcs.exe

description	pid	process
Token: SeDebugPrivilege	2156	powershell.exe
Token: SeDebugPrivilege	2620	regsvcs.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exeregsvcs.exe

description	pid	process	target process
PID 2816 wrote to memory of 2156	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	powershell.exe
PID 2816 wrote to memory of 2156	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	powershell.exe
PID 2816 wrote to memory of 2156	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	powershell.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 2620	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	regsvcs.exe
PID 2816 wrote to memory of 3036	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	WerFault.exe
PID 2816 wrote to memory of 3036	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	WerFault.exe
PID 2816 wrote to memory of 3036	2816	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe	WerFault.exe
PID 2620 wrote to memory of 364	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 364	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 364	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 364	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 916	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 916	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 916	2620	regsvcs.exe	schtasks.exe
PID 2620 wrote to memory of 916	2620	regsvcs.exe	schtasks.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe

C:\Users\Admin\AppData\Local\Temp\f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe
"C:\Users\Admin\AppData\Local\Temp\f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2816

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\f746d18424c35a1c52b119dc13aa42b613301fa45fddd94a084707384a41fabd.exe" -Force
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2156

C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
2⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2620

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6C4A.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:364

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6F67.tmp"
3⤵
- Scheduled Task/Job: Scheduled Task
PID:916

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2816 -s 808
2⤵
PID:3036

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6C4A.tmp
Filesize
1KB

MD5
2511f5150c45c9c6141788c8be9a44bd

SHA1
1e468ad16380d3b6a7268d7af2482f6259c8651d

SHA256
b95602df2c09914384788c97c9bca318fc50bb443de39b13fb2e45856a2fe065

SHA512
a638b54fbe899780f6dcee8a1859085bcfd2f2195c6db092811b8019c5f4969457ba80b80e3a31c16f4bc964e3c9afbcdf6141c3a2e8953ad209838de8ca1a73

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6F67.tmp
Filesize
1KB

MD5
ffa9e95100598072ca693c672478895f

SHA1
518514c3112c51b2b21d36d3262bec72e83d025d

SHA256
1e45d509d390405f93e9f3b64ff497e61cf9bf791c015dde4499184b7a681eb3

SHA512
010d14ae46a23cef14cf1de9a06c8e6ff26ca86c10ebdd3d5f16f4ffbeacc3df7ca18fafda097e00bf747fb997c5c4f9d62646e47a3b501da7c630689c28d6df

Download Submit
memory/2156-9-0x0000000002430000-0x00000000024B0000-memory.dmp

Filesize
512KB

Download
memory/2156-23-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/2156-22-0x000000001B470000-0x000000001B752000-memory.dmp

Filesize
2.9MB

Download
memory/2620-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2620-31-0x00000000008F0000-0x00000000008FA000-memory.dmp

Filesize
40KB

Download
memory/2620-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2620-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2620-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2620-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2620-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2620-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2620-33-0x0000000000900000-0x000000000090A000-memory.dmp

Filesize
40KB

Download
memory/2620-32-0x0000000000920000-0x000000000093E000-memory.dmp

Filesize
120KB

Download
memory/2620-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2816-0-0x000007FEF5703000-0x000007FEF5704000-memory.dmp

Filesize
4KB

Download
memory/2816-1-0x0000000000E50000-0x0000000000E5C000-memory.dmp

Filesize
48KB

Download
memory/2816-2-0x000007FEF5700000-0x000007FEF60EC000-memory.dmp

Filesize
9.9MB

Download
memory/2816-3-0x000000001B940000-0x000000001B94C000-memory.dmp

Filesize
48KB

Download
memory/2816-4-0x000000001B000000-0x000000001B08C000-memory.dmp

Filesize
560KB

Download
memory/2816-34-0x000007FEF5703000-0x000007FEF5704000-memory.dmp

Filesize
4KB

Download
memory/2816-35-0x000007FEF5700000-0x000007FEF60EC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads