nanocore | 02836293f5f7da55efb90a2d910bf7bfa0b5820d6f605125eaac32a66aff3c97

General

Target

RAHIM_TR.exe
Size

678KB
MD5

c51d8463c81efb97b01612fb123a5487
SHA1

4653182de7be95a630fb98bde3232049daee816c
SHA256

240159852a07d731922811db6650130ff93a374e2128e72bf2b7cf8b52fe551e
SHA512

30371d92cc222d46653b662ab5083b7dca61d50f86ac409a64d7d16da57fed213d247d1bd7962ed7ee3d84b14539bf96040f068ce7f5cdfad138f7690b162c3d

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.97.7:21600

127.0.0.1:21600

Mutex

e5b96bc8-7801-4aaf-bd22-9b94311755e4

Attributes

activate_away_mode
false
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-05-22T19:43:27.532173036Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
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
e5b96bc8-7801-4aaf-bd22-9b94311755e4
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
194.5.97.7
primary_dns_server
8.8.8.8
request_elevation
false
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RAHIM_TR.exe

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

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RAHIM_TR.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RAHIM_TR.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

RAHIM_TR.exe

description pid process target process

PID 1612 set thread context of 1528 1612 RAHIM_TR.exe RAHIM_TR.exe

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

description	pid	process	target process
PID 1612 set thread context of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe

Drops file in Program Files directory 2 IoCs

Processes:

RAHIM_TR.exe

description	ioc	process
File created	C:\Program Files (x86)\ARP Service\arpsvc.exe	RAHIM_TR.exe
File opened for modification	C:\Program Files (x86)\ARP Service\arpsvc.exe	RAHIM_TR.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 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1648 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RAHIM_TR.exe

pid process

1528 RAHIM_TR.exe
1528 RAHIM_TR.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RAHIM_TR.exe

description pid process

Token: SeDebugPrivilege 1528 RAHIM_TR.exe

pid	process
1648	schtasks.exe

pid	process
1528	RAHIM_TR.exe
1528	RAHIM_TR.exe

description	pid	process
Token: SeDebugPrivilege	1528	RAHIM_TR.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

RAHIM_TR.exe

description	pid	process	target process
PID 1612 wrote to memory of 1648	1612	RAHIM_TR.exe	schtasks.exe
PID 1612 wrote to memory of 1648	1612	RAHIM_TR.exe	schtasks.exe
PID 1612 wrote to memory of 1648	1612	RAHIM_TR.exe	schtasks.exe
PID 1612 wrote to memory of 1648	1612	RAHIM_TR.exe	schtasks.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe
PID 1612 wrote to memory of 1528	1612	RAHIM_TR.exe	RAHIM_TR.exe

C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe
"C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oFxLYQpK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB2A.tmp"
2⤵
- Creates scheduled task(s)
PID:1648

C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe
"C:\Users\Admin\AppData\Local\Temp\RAHIM_TR.exe"
2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1528

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpEB2A.tmp
Filesize
1KB

MD5
4169b39bd13155c083b5836d35447e12

SHA1
f5c6006bbfffc08bb90ba12cf80f1a3dbf1acf57

SHA256
fc5f74fb175f54c9ecbf67d365eafc7b32e7b551ad7a82e9737a2e18dc1a0ec7

SHA512
4bb7f064bfadada92d7ff639807e59eedcc1bd7684f2abbe3b0726ecfc0d7dcec5a10f6688eceb8dea04c109fe2fab3547b71ed7c8924cf4d7e9a130bd449002

Download Submit
memory/1528-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-58-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-65-0x000000000041E792-mapping.dmp

Download
memory/1528-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-69-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1528-71-0x0000000074A70000-0x000000007501B000-memory.dmp

Filesize
5.7MB

Download
memory/1612-55-0x0000000074AE0000-0x000000007508B000-memory.dmp

Filesize
5.7MB

Download
memory/1612-54-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1648-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads