nanocore | def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27

General

Target

def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe
Size

1.2MB
MD5

ab97523c0c284868c08c9120d921ba06
SHA1

0c79283dff6d22f7cf85561f33ff8f2753de880a
SHA256

def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27
SHA512

06c09f00cc60e682453b5317f23f9c1d36a1535b0f5de10e491dc587953d43345e41dd50acfc7019487180f48e504cd8a6d4b10029c1508b367ba9609e96f554
SSDEEP

24576:ZAHnh+eWsN3skA4RV1Hom2KXMmHa+erpr3rzzF5:gh+ZkldoPK8Ya+WL

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.162.88.16:2359

dish123newpro.publicvm.com:2359

Mutex

c253fe26-7f15-444b-bcbf-bdaaa6a4fb19

Attributes

activate_away_mode
true
backup_connection_host
dish123newpro.publicvm.com
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-12-27T16:33:42.242053636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
2359
default_group
NANO17032019
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
c253fe26-7f15-444b-bcbf-bdaaa6a4fb19
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.162.88.16
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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
Executes dropped EXE 3 IoCs

Processes:

osk.exeosk.exeosk.exe

pid process

796 osk.exe
4884 osk.exe
2696 osk.exe

pid	process
796	osk.exe
4884	osk.exe
2696	osk.exe

Checks computer location settings 2 TTPs 4 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

osk.exedef61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exeosk.exeosk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	osk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	osk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	osk.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RegAsm.exe

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
C:\Users\Admin\authfwcfg\osk.exe	autoit_exe
C:\Users\Admin\authfwcfg\osk.exe	autoit_exe
C:\Users\Admin\authfwcfg\osk.exe	autoit_exe
C:\Users\Admin\authfwcfg\osk.exe	autoit_exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exeosk.exeosk.exeosk.exe

description	pid	process	target process
PID 4260 set thread context of 3228	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 796 set thread context of 4132	796	osk.exe	RegAsm.exe
PID 4884 set thread context of 3400	4884	osk.exe	RegAsm.exe
PID 2696 set thread context of 4348	2696	osk.exe	RegAsm.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid process

532 schtasks.exe
1280 schtasks.exe
2224 schtasks.exe
4904 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RegAsm.exe

pid process

3228 RegAsm.exe
3228 RegAsm.exe
3228 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

3228 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3228 RegAsm.exe

pid	process
532	schtasks.exe
1280	schtasks.exe
2224	schtasks.exe
4904	schtasks.exe

pid	process
3228	RegAsm.exe
3228	RegAsm.exe
3228	RegAsm.exe

pid	process
3228	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3228	RegAsm.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exeosk.exeosk.exeosk.exe

description	pid	process	target process
PID 4260 wrote to memory of 3228	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 4260 wrote to memory of 3228	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 4260 wrote to memory of 3228	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 4260 wrote to memory of 3228	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 4260 wrote to memory of 3228	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 4260 wrote to memory of 532	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 4260 wrote to memory of 532	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 4260 wrote to memory of 532	4260	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 796 wrote to memory of 4132	796	osk.exe	RegAsm.exe
PID 796 wrote to memory of 4132	796	osk.exe	RegAsm.exe
PID 796 wrote to memory of 4132	796	osk.exe	RegAsm.exe
PID 796 wrote to memory of 4132	796	osk.exe	RegAsm.exe
PID 796 wrote to memory of 4132	796	osk.exe	RegAsm.exe
PID 796 wrote to memory of 1280	796	osk.exe	schtasks.exe
PID 796 wrote to memory of 1280	796	osk.exe	schtasks.exe
PID 796 wrote to memory of 1280	796	osk.exe	schtasks.exe
PID 4884 wrote to memory of 3400	4884	osk.exe	RegAsm.exe
PID 4884 wrote to memory of 3400	4884	osk.exe	RegAsm.exe
PID 4884 wrote to memory of 3400	4884	osk.exe	RegAsm.exe
PID 4884 wrote to memory of 3400	4884	osk.exe	RegAsm.exe
PID 4884 wrote to memory of 3400	4884	osk.exe	RegAsm.exe
PID 4884 wrote to memory of 2224	4884	osk.exe	schtasks.exe
PID 4884 wrote to memory of 2224	4884	osk.exe	schtasks.exe
PID 4884 wrote to memory of 2224	4884	osk.exe	schtasks.exe
PID 2696 wrote to memory of 4348	2696	osk.exe	RegAsm.exe
PID 2696 wrote to memory of 4348	2696	osk.exe	RegAsm.exe
PID 2696 wrote to memory of 4348	2696	osk.exe	RegAsm.exe
PID 2696 wrote to memory of 4348	2696	osk.exe	RegAsm.exe
PID 2696 wrote to memory of 4348	2696	osk.exe	RegAsm.exe
PID 2696 wrote to memory of 4904	2696	osk.exe	schtasks.exe
PID 2696 wrote to memory of 4904	2696	osk.exe	schtasks.exe
PID 2696 wrote to memory of 4904	2696	osk.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe
"C:\Users\Admin\AppData\Local\Temp\def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4260

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:3228

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
2⤵
- Creates scheduled task(s)
PID:532

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:796

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
2⤵
PID:4132

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
2⤵
- Creates scheduled task(s)
PID:1280

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4884

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
2⤵
PID:3400

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
2⤵
- Creates scheduled task(s)
PID:2224

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
1⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2696

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
2⤵
PID:4348

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\SysWOW64\schtasks.exe" /create /tn SystemPropertiesHardware /tr "C:\Users\Admin\authfwcfg\osk.exe" /sc minute /mo 1 /F
2⤵
- Creates scheduled task(s)
PID:4904

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\RegAsm.exe.log
Filesize
496B

MD5
5b4789d01bb4d7483b71e1a35bce6a8b

SHA1
de083f2131c9a763c0d1810c97a38732146cffbf

SHA256
e248cef9500ed6e0c9f99d72a2a6a36955a5f0cfc0725748ef25a733cc8282f6

SHA512
357e18ef30430e4b9cc4f2569b9735b1cd12f934c83162e4de78ac29ba9703b63ddb624ccc22afd5a5868f6e9d91a3c64581846abac22e9625f5b2e3d80b3ede

Download Submit
C:\Users\Admin\authfwcfg\osk.exe
Filesize
1.2MB

MD5
d792111c6517fc19fb42fe2bab7fabc6

SHA1
210fd073132655fed6abbb3140807ee4c644dac7

SHA256
5d70f34e80726852aa55cf699730baf63448f9d71876a7cc16ae82720dda6a35

SHA512
87f17bd8c360cf923a3c6ddafb339d3838e6a096364cec30c17863a99d943fb32626a6a8b10661d2f21a57c9a68a75c0e5c7286138698027558df2e00543b131

Download Submit
C:\Users\Admin\authfwcfg\osk.exe
Filesize
1.2MB

MD5
d792111c6517fc19fb42fe2bab7fabc6

SHA1
210fd073132655fed6abbb3140807ee4c644dac7

SHA256
5d70f34e80726852aa55cf699730baf63448f9d71876a7cc16ae82720dda6a35

SHA512
87f17bd8c360cf923a3c6ddafb339d3838e6a096364cec30c17863a99d943fb32626a6a8b10661d2f21a57c9a68a75c0e5c7286138698027558df2e00543b131

Download Submit
C:\Users\Admin\authfwcfg\osk.exe
Filesize
1.2MB

MD5
d792111c6517fc19fb42fe2bab7fabc6

SHA1
210fd073132655fed6abbb3140807ee4c644dac7

SHA256
5d70f34e80726852aa55cf699730baf63448f9d71876a7cc16ae82720dda6a35

SHA512
87f17bd8c360cf923a3c6ddafb339d3838e6a096364cec30c17863a99d943fb32626a6a8b10661d2f21a57c9a68a75c0e5c7286138698027558df2e00543b131

Download Submit
C:\Users\Admin\authfwcfg\osk.exe
Filesize
1.2MB

MD5
d792111c6517fc19fb42fe2bab7fabc6

SHA1
210fd073132655fed6abbb3140807ee4c644dac7

SHA256
5d70f34e80726852aa55cf699730baf63448f9d71876a7cc16ae82720dda6a35

SHA512
87f17bd8c360cf923a3c6ddafb339d3838e6a096364cec30c17863a99d943fb32626a6a8b10661d2f21a57c9a68a75c0e5c7286138698027558df2e00543b131

Download Submit
memory/532-138-0x0000000000000000-mapping.dmp

Download
memory/1280-150-0x0000000000000000-mapping.dmp

Download
memory/2224-161-0x0000000000000000-mapping.dmp

Download
memory/3228-140-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/3228-133-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3228-132-0x0000000000000000-mapping.dmp

Download
memory/3228-139-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/3400-163-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/3400-154-0x0000000000000000-mapping.dmp

Download
memory/3400-162-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/4132-152-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/4132-151-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/4132-149-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/4132-143-0x0000000000000000-mapping.dmp

Download
memory/4348-166-0x0000000000700000-0x0000000000738000-memory.dmp

Filesize
224KB

Download
memory/4348-165-0x0000000000000000-mapping.dmp

Download
memory/4348-172-0x0000000073780000-0x0000000073D31000-memory.dmp

Filesize
5.7MB

Download
memory/4904-171-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads