nanocore | 5901a8e4a36574b8ca6cb3c899e64cdfc27395de606cd4a512431e6dd827196f

General

Target

bb4eb0cc2f31f248a9c2f38c0abbb252.exe
Size

710KB
MD5

bb4eb0cc2f31f248a9c2f38c0abbb252
SHA1

562528a4a0ea3eefe8e5526ad68ffdf3df9b5e64
SHA256

5901a8e4a36574b8ca6cb3c899e64cdfc27395de606cd4a512431e6dd827196f
SHA512

07b33a80ce27fc9b3b4d01900d7a513f1900183ea484e07d79ad57093b94d6adf81006b52f3cc412bcc73c43b32eeba155bbd793d180fa2d3a1a372396fbae79

Score

10^/10

upx evasion trojan keylogger stealer spyware nanocore persistence

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

godisgood.hopto.org:2177

185.165.153.30:2177

Mutex

adf7c98d-c26d-478d-b499-e4ca79cefdbc

Attributes

activate_away_mode
true
backup_connection_host
185.165.153.30
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-05-04T01:35:20.350531836Z
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
2177
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
adf7c98d-c26d-478d-b499-e4ca79cefdbc
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
godisgood.hopto.org
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

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

bb4eb0cc2f31f248a9c2f38c0abbb252.exenotepad.exehfsjrifske.exehfsjrifske.exe

description	pid	process	target process
PID 2584 wrote to memory of 492	2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe	notepad.exe
PID 2584 wrote to memory of 492	2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe	notepad.exe
PID 2584 wrote to memory of 492	2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe	notepad.exe
PID 2584 wrote to memory of 492	2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe	notepad.exe
PID 2584 wrote to memory of 492	2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe	notepad.exe
PID 492 wrote to memory of 632	492	notepad.exe	hfsjrifske.exe
PID 492 wrote to memory of 632	492	notepad.exe	hfsjrifske.exe
PID 492 wrote to memory of 632	492	notepad.exe	hfsjrifske.exe
PID 632 wrote to memory of 804	632	hfsjrifske.exe	hfsjrifske.exe
PID 632 wrote to memory of 804	632	hfsjrifske.exe	hfsjrifske.exe
PID 632 wrote to memory of 804	632	hfsjrifske.exe	hfsjrifske.exe
PID 632 wrote to memory of 996	632	hfsjrifske.exe	hfsjrifske.exe
PID 632 wrote to memory of 996	632	hfsjrifske.exe	hfsjrifske.exe
PID 632 wrote to memory of 996	632	hfsjrifske.exe	hfsjrifske.exe
PID 804 wrote to memory of 1100	804	hfsjrifske.exe	schtasks.exe
PID 804 wrote to memory of 1100	804	hfsjrifske.exe	schtasks.exe
PID 804 wrote to memory of 1100	804	hfsjrifske.exe	schtasks.exe
PID 804 wrote to memory of 1412	804	hfsjrifske.exe	schtasks.exe
PID 804 wrote to memory of 1412	804	hfsjrifske.exe	schtasks.exe
PID 804 wrote to memory of 1412	804	hfsjrifske.exe	schtasks.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

hfsjrifske.exe

pid process

632 hfsjrifske.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

hfsjrifske.exe

description pid process

Token: SeDebugPrivilege 804 hfsjrifske.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

hfsjrifske.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA hfsjrifske.exe
Executes dropped EXE 3 IoCs

Processes:

hfsjrifske.exehfsjrifske.exehfsjrifske.exe

pid process

632 hfsjrifske.exe
804 hfsjrifske.exe
996 hfsjrifske.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hfsjrifske.exe

description pid process target process

PID 632 set thread context of 804 632 hfsjrifske.exe hfsjrifske.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

hfsjrifske.exe

pid process

804 hfsjrifske.exe

pid	process
632	hfsjrifske.exe

description	pid	process
Token: SeDebugPrivilege	804	hfsjrifske.exe

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

pid	process
632	hfsjrifske.exe
804	hfsjrifske.exe
996	hfsjrifske.exe

description	pid	process	target process
PID 632 set thread context of 804	632	hfsjrifske.exe	hfsjrifske.exe

pid	process
804	hfsjrifske.exe

NTFS ADS 2 IoCs

Processes:

notepad.exehfsjrifske.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe:ZoneIdentifier	notepad.exe
File created	C:\Program Files (x86)\IMAP Service\imapsv.exe\:ZoneIdentifier:$DATA	hfsjrifske.exe

Drops startup file 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\web.vbs notepad.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

1100 schtasks.exe
1412 schtasks.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\web.vbs	notepad.exe

pid	process
1100	schtasks.exe
1412	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2703 IoCs

Processes:

bb4eb0cc2f31f248a9c2f38c0abbb252.exehfsjrifske.exehfsjrifske.exe

pid	process
2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe
2584	bb4eb0cc2f31f248a9c2f38c0abbb252.exe
632	hfsjrifske.exe
632	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe
996	hfsjrifske.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/804-4-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/804-4-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/804-8-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/804-8-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/804-9-0x0000000000400000-0x000000000047F000-memory.dmp	upx
behavioral2/memory/804-9-0x0000000000400000-0x000000000047F000-memory.dmp	upx

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Drops file in Program Files directory 3 IoCs

Processes:

hfsjrifske.exe

description	ioc	process
File created	C:\Program Files (x86)\IMAP Service\imapsv.exe	hfsjrifske.exe
File opened for modification	C:\Program Files (x86)\IMAP Service\imapsv.exe	hfsjrifske.exe
File created	C:\Program Files (x86)\IMAP Service\imapsv.exe\:ZoneIdentifier:$DATA	hfsjrifske.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

hfsjrifske.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\IMAP Service = "C:\\Program Files (x86)\\IMAP Service\\imapsv.exe"	hfsjrifske.exe

C:\Users\Admin\AppData\Local\Temp\bb4eb0cc2f31f248a9c2f38c0abbb252.exe
"C:\Users\Admin\AppData\Local\Temp\bb4eb0cc2f31f248a9c2f38c0abbb252.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious behavior: EnumeratesProcesses
PID:2584

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Suspicious use of WriteProcessMemory
- NTFS ADS
- Drops startup file
PID:492

C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe
"C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe"
3⤵
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
PID:632

C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe
"C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe"
4⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
- Checks whether UAC is enabled
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- NTFS ADS
- Drops file in Program Files directory
- Adds Run key to start application
PID:804

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "IMAP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC7DF.tmp"
5⤵
- Creates scheduled task(s)
PID:1100

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "IMAP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC986.tmp"
5⤵
- Creates scheduled task(s)
PID:1412

C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe
"C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe" 2 804 109906
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:996

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC7DF.tmp

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C:\Users\Admin\AppData\Local\Temp\tmpC986.tmp

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C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe

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C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe

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C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe

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C:\Users\Admin\AppData\Roaming\appdata\hfsjrifske.exe

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memory/492-0-0x0000000000000000-mapping.dmp

Download
memory/632-1-0x0000000000000000-mapping.dmp

Download
memory/804-12-0x0000000000972000-0x0000000000973000-memory.dmp

Filesize
4KB

Download
memory/804-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/804-11-0x0000000002180000-0x00000000021B8000-memory.dmp

Filesize
224KB

Download
memory/804-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/804-5-0x000000000047D730-mapping.dmp

Download
memory/804-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/996-7-0x0000000000000000-mapping.dmp

Download
memory/1100-13-0x0000000000000000-mapping.dmp

Download
memory/1412-15-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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