nanocore | 6343bc22fcb1a909e908ca7c0fa90d34e09f669dbd72a69e75ff8af7a9d217eb

General

Target
RFQ.exe
Size 744KB
Sample200709-7fcd2pcd5j
SHA256 6343bc22fcb1a909e908ca7c0fa90d34e09f669dbd72a69e75ff8af7a9d217eb
MD5 32e1d4c85781d7fbe62d8f93aa5bf792
SHA1 86f00a66314b03734bd741d51b78670c756eb794
SHA512 7edbc73c739b237d37f911b75051f841bea9b7a7f21c757b8c6e1215c7c443c2acf4ce0c097a874dd4466405571e0c6025661f421b0bc083fb0120080b6229c4
MD5 SHA1 SHA512

Score

10^/10

evasion trojan keylogger stealer spyware nanocore persistence

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.165.153.26:1985

Mutex

2276abda-5081-40bb-9a10-f4ca8116bc08

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-19T23:28:11.122410736Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
1985
default_group
Xmen
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
2276abda-5081-40bb-9a10-f4ca8116bc08
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
185.165.153.26
primary_dns_server
8.8.8.8
request_elevation
true
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 17 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 2588	640	RFQ.exe	72
PID 640 wrote to memory of 2588	640	RFQ.exe	72
PID 640 wrote to memory of 2588	640	RFQ.exe	72
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 640 wrote to memory of 3644	640	RFQ.exe	74
PID 3644 wrote to memory of 4084	3644	RegSvcs.exe	75
PID 3644 wrote to memory of 4084	3644	RegSvcs.exe	75
PID 3644 wrote to memory of 4084	3644	RegSvcs.exe	75
PID 3644 wrote to memory of 1700	3644	RegSvcs.exe	77
PID 3644 wrote to memory of 1700	3644	RegSvcs.exe	77
PID 3644 wrote to memory of 1700	3644	RegSvcs.exe	77

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 640 set thread context of 3644	640	RFQ.exe	74

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3644	RegSvcs.exe
3644	RegSvcs.exe
3644	RegSvcs.exe

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2588	schtasks.exe
4084	schtasks.exe
1700	schtasks.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SCSI Manager\scsimgr.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\SCSI Manager\scsimgr.exe	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3644	RegSvcs.exe
Token: SeDebugPrivilege	3644	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3644	RegSvcs.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SCSI Manager = "C:\\Program Files (x86)\\SCSI Manager\\scsimgr.exe"	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:640
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KBKGCm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp669F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2588
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "{path}"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Suspicious behavior: EnumeratesProcesses
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: GetForegroundWindowSpam
  - Adds Run entry to start application
  PID:3644
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SCSI Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6D95.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4084
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SCSI Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6DF3.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1700