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

1532 osk.exe
1884 osk.exe
888 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

pid	process
1532	osk.exe
1884	osk.exe
888	osk.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 1900 set thread context of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1532 set thread context of 836	1532	osk.exe	RegAsm.exe
PID 1884 set thread context of 1716	1884	osk.exe	RegAsm.exe
PID 888 set thread context of 1372	888	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

1156 schtasks.exe
860 schtasks.exe
764 schtasks.exe
1260 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegAsm.exe

pid process

1928 RegAsm.exe
1928 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

1928 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1928 RegAsm.exe

pid	process
1156	schtasks.exe
860	schtasks.exe
764	schtasks.exe
1260	schtasks.exe

pid	process
1928	RegAsm.exe
1928	RegAsm.exe

pid	process
1928	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1928	RegAsm.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exetaskeng.exeosk.exeosk.exeosk.exe

description	pid	process	target process
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 1928	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	RegAsm.exe
PID 1900 wrote to memory of 860	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 1900 wrote to memory of 860	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 1900 wrote to memory of 860	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 1900 wrote to memory of 860	1900	def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe	schtasks.exe
PID 1696 wrote to memory of 1532	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 1532	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 1532	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 1532	1696	taskeng.exe	osk.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 836	1532	osk.exe	RegAsm.exe
PID 1532 wrote to memory of 764	1532	osk.exe	schtasks.exe
PID 1532 wrote to memory of 764	1532	osk.exe	schtasks.exe
PID 1532 wrote to memory of 764	1532	osk.exe	schtasks.exe
PID 1532 wrote to memory of 764	1532	osk.exe	schtasks.exe
PID 1696 wrote to memory of 1884	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 1884	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 1884	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 1884	1696	taskeng.exe	osk.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1716	1884	osk.exe	RegAsm.exe
PID 1884 wrote to memory of 1260	1884	osk.exe	schtasks.exe
PID 1884 wrote to memory of 1260	1884	osk.exe	schtasks.exe
PID 1884 wrote to memory of 1260	1884	osk.exe	schtasks.exe
PID 1884 wrote to memory of 1260	1884	osk.exe	schtasks.exe
PID 1696 wrote to memory of 888	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 888	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 888	1696	taskeng.exe	osk.exe
PID 1696 wrote to memory of 888	1696	taskeng.exe	osk.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1372	888	osk.exe	RegAsm.exe
PID 888 wrote to memory of 1156	888	osk.exe	schtasks.exe
PID 888 wrote to memory of 1156	888	osk.exe	schtasks.exe
PID 888 wrote to memory of 1156	888	osk.exe	schtasks.exe
PID 888 wrote to memory of 1156	888	osk.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe
"C:\Users\Admin\AppData\Local\Temp\def61d4f51f9e74dd472f3d3a815ab228d40fd4ff1b9fcc51c56f291270bcf27.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1900

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:1928

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:860

C:\Windows\system32\taskeng.exe
taskeng.exe {D67763A8-D20C-4CA6-B9EC-80B9C1BD9889} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1696

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1532

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
3⤵
PID:836

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
3⤵
- Creates scheduled task(s)
PID:764

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1884

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
3⤵
PID:1716

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
3⤵
- Creates scheduled task(s)
PID:1260

C:\Users\Admin\authfwcfg\osk.exe
C:\Users\Admin\authfwcfg\osk.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:888

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
3⤵
PID:1372

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
3⤵
- Creates scheduled task(s)
PID:1156

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

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

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

MD5
e76459c1f2a0636a19c74debe9d7367a

SHA1
5f24f955046cabc029d55758addf9b8c6feeb214

SHA256
4f13a224055a37c8bc0636795ac6358651eb011bc976d8f18ed35bb0a078bc2d

SHA512
ba9400af234148baa4c71fdf1768902b64c15b917889d4db77d21d5a2d6e427a4fc6ee0ed4c9151ef4b25d0128ccdab1e561506f523e61c020a0250dfe08f6b2

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

MD5
e76459c1f2a0636a19c74debe9d7367a

SHA1
5f24f955046cabc029d55758addf9b8c6feeb214

SHA256
4f13a224055a37c8bc0636795ac6358651eb011bc976d8f18ed35bb0a078bc2d

SHA512
ba9400af234148baa4c71fdf1768902b64c15b917889d4db77d21d5a2d6e427a4fc6ee0ed4c9151ef4b25d0128ccdab1e561506f523e61c020a0250dfe08f6b2

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

MD5
e76459c1f2a0636a19c74debe9d7367a

SHA1
5f24f955046cabc029d55758addf9b8c6feeb214

SHA256
4f13a224055a37c8bc0636795ac6358651eb011bc976d8f18ed35bb0a078bc2d

SHA512
ba9400af234148baa4c71fdf1768902b64c15b917889d4db77d21d5a2d6e427a4fc6ee0ed4c9151ef4b25d0128ccdab1e561506f523e61c020a0250dfe08f6b2

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

MD5
e76459c1f2a0636a19c74debe9d7367a

SHA1
5f24f955046cabc029d55758addf9b8c6feeb214

SHA256
4f13a224055a37c8bc0636795ac6358651eb011bc976d8f18ed35bb0a078bc2d

SHA512
ba9400af234148baa4c71fdf1768902b64c15b917889d4db77d21d5a2d6e427a4fc6ee0ed4c9151ef4b25d0128ccdab1e561506f523e61c020a0250dfe08f6b2

Download Submit
memory/764-83-0x0000000000000000-mapping.dmp

Download
memory/836-84-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/836-86-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/836-87-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/836-80-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/836-81-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/836-74-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/836-79-0x000000000041E792-mapping.dmp

Download
memory/860-66-0x0000000000000000-mapping.dmp

Download
memory/888-106-0x0000000000000000-mapping.dmp

Download
memory/1156-120-0x0000000000000000-mapping.dmp

Download
memory/1260-102-0x0000000000000000-mapping.dmp

Download
memory/1372-116-0x000000000041E792-mapping.dmp

Download
memory/1372-121-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1532-69-0x0000000000000000-mapping.dmp

Download
memory/1716-104-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1716-105-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1716-98-0x000000000041E792-mapping.dmp

Download
memory/1716-103-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1884-88-0x0000000000000000-mapping.dmp

Download
memory/1900-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/1928-85-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1928-57-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/1928-55-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/1928-67-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1928-63-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download
memory/1928-62-0x00000000000AE792-mapping.dmp

Download
memory/1928-64-0x0000000000090000-0x00000000000C8000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads