nanocore | 0982bdc34132441865753618ab6e934e3f1a64b7df75cd0b1ece7fb5eb42fe51

General

Target

bright.exe
Size

1013KB
MD5

577b4a8ffd3d2ede7f85c53ee88feaa7
SHA1

f1a0dfec0dcc641d904793a2631d3b7b5a44f9dc
SHA256

0982bdc34132441865753618ab6e934e3f1a64b7df75cd0b1ece7fb5eb42fe51
SHA512

c6ff4b4d197da083f5a117ce3db4830b832490c2f670c12a30f12aaf8417bc1686d19ce55ce2ec992c01da5d72026628869ba91a54051d05ef3b2e5a899476e5
SSDEEP

24576:DuXqE4Th/qIG9pENMqh1oJB9LlzuVLTw5nF:aXqHVyIcc1h1iLlzuVL4F

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brightnano1.ddns.net:1989

171.22.30.97:1989

Mutex

fba1bbc6-2cc8-4c94-b6c0-dda5a12fd7fe

Attributes

activate_away_mode
true
backup_connection_host
171.22.30.97
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-06-10T14:34:05.030247036Z
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
1989
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
fba1bbc6-2cc8-4c94-b6c0-dda5a12fd7fe
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
brightnano1.ddns.net
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

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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	bright.exe

Adds Run key 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\DHCP Subsystem = "C:\\Program Files (x86)\\DHCP Subsystem\\dhcpss.exe"	bright.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	bright.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3124 set thread context of 1752	3124	bright.exe	90

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	bright.exe
File opened for modification	C:\Program Files (x86)\DHCP Subsystem\dhcpss.exe	bright.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 3 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
3288	schtasks.exe
4672	schtasks.exe
2160	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1752	bright.exe
1752	bright.exe
1752	bright.exe
1752	bright.exe
1752	bright.exe
1752	bright.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1752	bright.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	bright.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 4672	3124	bright.exe	88
PID 3124 wrote to memory of 4672	3124	bright.exe	88
PID 3124 wrote to memory of 4672	3124	bright.exe	88
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 3124 wrote to memory of 1752	3124	bright.exe	90
PID 1752 wrote to memory of 2160	1752	bright.exe	91
PID 1752 wrote to memory of 2160	1752	bright.exe	91
PID 1752 wrote to memory of 2160	1752	bright.exe	91
PID 1752 wrote to memory of 3288	1752	bright.exe	93
PID 1752 wrote to memory of 3288	1752	bright.exe	93
PID 1752 wrote to memory of 3288	1752	bright.exe	93

C:\Users\Admin\AppData\Local\Temp\bright.exe
"C:\Users\Admin\AppData\Local\Temp\bright.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zbqrzWmpOD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F6F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4672
- C:\Users\Admin\AppData\Local\Temp\bright.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1752
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2470.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:2160
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp24DE.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3288

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

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1F6F.tmp

Filesize
1KB

MD5
d83d3e49fee73604fad7bedf43d8ec1b

SHA1
2c7c4392aeddf52cf1600838caa8d00c74ad2cbb

SHA256
c4846a36e8c3e5e879450a598c0bf5ea54c6cac6a745d69b56cbc182f156eb6b

SHA512
365f2ac7708140889cfdadaf123214ea3dae3ce23244d4e5703c7cfead43a17a758e20932374d660633ed982ef055488c0147b3f98a8f9227f7e54f73d79bd64

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2470.tmp

Filesize
1KB

MD5
fc3c777a8aeae21507fbc222f301a892

SHA1
b0272f89b780e59acee1732d20d3c88dbe64be17

SHA256
a9cd964d23d31120a840656495322d0b420e0412357fd21598b46c167c8cbff2

SHA512
db3ec406282c2fbfdfa80b5d64a573f5168f496935805f39a28fac4737b51acf23efd9cfee408bba615a8a99a900347429c269d27f49f01aaf64a45cff1b6cb6

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp24DE.tmp

Filesize
1KB

MD5
2f26d92c1eeead3896820e56ec46f6f1

SHA1
d95533b61eed7d89e4ada56bc566d60e42ac1f61

SHA256
99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa

SHA512
6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892

Download Submit
memory/1752-145-0x0000000007370000-0x00000000073D6000-memory.dmp

Filesize
408KB

Download
memory/1752-140-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3124-136-0x0000000004F10000-0x0000000004F1A000-memory.dmp

Filesize
40KB

Download
memory/3124-132-0x0000000000470000-0x0000000000574000-memory.dmp

Filesize
1.0MB

Download
memory/3124-135-0x0000000004FD0000-0x000000000506C000-memory.dmp

Filesize
624KB

Download
memory/3124-134-0x0000000004F30000-0x0000000004FC2000-memory.dmp

Filesize
584KB

Download
memory/3124-133-0x0000000005440000-0x00000000059E4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads