nanocore | 2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d

General

Target

dutyx.exe
Size

932KB
MD5

5aab72a04e08d18505e3b80390a61ba5
SHA1

18e60c3c8112b0681db538eb2c4c9bde7d590aaa
SHA256

2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d
SHA512

2920b69e55ef7304b66856c41c762a8426df109021156776e6d501693bce2b6e329837693b1e8414caeae2aa3e618274ee8906e01727b061fdf3054971be98ac

Score

10^/10

evasion trojan keylogger stealer spyware nanocore persistence

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.75:21600

Mutex

85973092-053f-4ccf-8ddc-0f660900bcba

Attributes

activate_away_mode
false
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2019-08-24T13:32:11.278262436Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
21600
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
85973092-053f-4ccf-8ddc-0f660900bcba
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
79.134.225.75
primary_dns_server
8.8.8.8
request_elevation
false
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

dutyx.exedutyx.exe

description	pid	process	target process
PID 1100 wrote to memory of 1144	1100	dutyx.exe	dutyx.exe
PID 1100 wrote to memory of 1144	1100	dutyx.exe	dutyx.exe
PID 1100 wrote to memory of 1144	1100	dutyx.exe	dutyx.exe
PID 1100 wrote to memory of 1144	1100	dutyx.exe	dutyx.exe
PID 1144 wrote to memory of 1400	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 1400	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 1400	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 1400	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 844	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 844	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 844	1144	dutyx.exe	schtasks.exe
PID 1144 wrote to memory of 844	1144	dutyx.exe	schtasks.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

dutyx.exe

description pid process target process

PID 1100 set thread context of 1144 1100 dutyx.exe dutyx.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

dutyx.exe

description pid process

Token: SeDebugPrivilege 1144 dutyx.exe
Token: SeDebugPrivilege 1144 dutyx.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

dutyx.exe

pid process

1144 dutyx.exe

description	pid	process	target process
PID 1100 set thread context of 1144	1100	dutyx.exe	dutyx.exe

description	pid	process
Token: SeDebugPrivilege	1144	dutyx.exe
Token: SeDebugPrivilege	1144	dutyx.exe

pid	process
1144	dutyx.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

Processes:

resource	yara_rule
behavioral1/memory/1144-0-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral1/memory/1144-2-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral1/memory/1144-3-0x0000000000400000-0x000000000047F000-memory.dmp	upx

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

dutyx.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA dutyx.exe
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

dutyx.exedutyx.exe

pid process

1100 dutyx.exe
1144 dutyx.exe
1144 dutyx.exe

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

pid	process
1100	dutyx.exe
1144	dutyx.exe
1144	dutyx.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

dutyx.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WPA Service = "C:\\Program Files (x86)\\WPA Service\\wpasvc.exe"	dutyx.exe

Drops file in Program Files directory 2 IoCs

Processes:

dutyx.exe

description	ioc	process
File created	C:\Program Files (x86)\WPA Service\wpasvc.exe	dutyx.exe
File opened for modification	C:\Program Files (x86)\WPA Service\wpasvc.exe	dutyx.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1400 schtasks.exe
844 schtasks.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

dutyx.exe

pid process

1100 dutyx.exe

pid	process
1400	schtasks.exe
844	schtasks.exe

pid	process
1100	dutyx.exe

C:\Users\Admin\AppData\Local\Temp\dutyx.exe
"C:\Users\Admin\AppData\Local\Temp\dutyx.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1100

C:\Users\Admin\AppData\Local\Temp\dutyx.exe
"C:\Users\Admin\AppData\Local\Temp\dutyx.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: GetForegroundWindowSpam
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Adds Run entry to start application
- Drops file in Program Files directory
PID:1144

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "WPA Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp76E3.tmp"
3⤵
- Creates scheduled task(s)
PID:1400

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "WPA Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7964.tmp"
3⤵
- Creates scheduled task(s)
PID:844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp76E3.tmp

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C:\Users\Admin\AppData\Local\Temp\tmp7964.tmp

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memory/844-10-0x0000000000000000-mapping.dmp

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memory/1144-0-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

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memory/1144-1-0x000000000047D700-mapping.dmp

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memory/1144-2-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

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memory/1144-3-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

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memory/1144-4-0x00000000004F0000-0x0000000000528000-memory.dmp

Filesize
224KB

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memory/1144-6-0x00000000001C0000-0x00000000001F3000-memory.dmp

Filesize
204KB

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memory/1400-8-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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