nanocore | 74bf4be5cd674b82ed1eee10d1187d16b8abd1c348d2527d8ff34d88fbc01114

General

Target

HEALTHCARE PO 00134536OCT2422.exe
Size

816KB
MD5

09b2235e9a54194838d29a8e92d3d120
SHA1

93d2d74e32e4995f30e038287c5d229264c837fc
SHA256

74bf4be5cd674b82ed1eee10d1187d16b8abd1c348d2527d8ff34d88fbc01114
SHA512

676fdc32a922ee410d34c1fa65c17bd5584c82b4e2d7d9e315115a592a4d8a2e8ad3472452dc5916159ecaa7223d28595b648145e5c6a8f481e95132fc8b4e22
SSDEEP

6144:l7BRdX63JgEWqAi2iu8ifmZzBa34IDz3Dv+Xr3Di0OlqMuyP2X7+tCfUktC0w5T3:zX6Zglqk7WYPfLYr5GeL+kfRX4nYY9

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

198.50.231.134:5498

Mutex

9b971056-14d1-4d11-993c-89c2085bbd7c

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-07-01T11:22:25.531243736Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
5498
default_group
miracle
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
9b971056-14d1-4d11-993c-89c2085bbd7c
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
198.50.231.134
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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 whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

HEALTHCARE PO 00134536OCT2422.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	HEALTHCARE PO 00134536OCT2422.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

HEALTHCARE PO 00134536OCT2422.exe

description pid process target process

PID 1956 set thread context of 468 1956 HEALTHCARE PO 00134536OCT2422.exe HEALTHCARE PO 00134536OCT2422.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

1764 schtasks.exe

description	pid	process	target process
PID 1956 set thread context of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe

pid	process
1764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

HEALTHCARE PO 00134536OCT2422.exepowershell.exeHEALTHCARE PO 00134536OCT2422.exe

pid	process
1956	HEALTHCARE PO 00134536OCT2422.exe
1956	HEALTHCARE PO 00134536OCT2422.exe
1956	HEALTHCARE PO 00134536OCT2422.exe
1956	HEALTHCARE PO 00134536OCT2422.exe
1956	HEALTHCARE PO 00134536OCT2422.exe
1956	HEALTHCARE PO 00134536OCT2422.exe
1208	powershell.exe
468	HEALTHCARE PO 00134536OCT2422.exe
468	HEALTHCARE PO 00134536OCT2422.exe
468	HEALTHCARE PO 00134536OCT2422.exe
468	HEALTHCARE PO 00134536OCT2422.exe
468	HEALTHCARE PO 00134536OCT2422.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

HEALTHCARE PO 00134536OCT2422.exe

pid process

468 HEALTHCARE PO 00134536OCT2422.exe

pid	process
468	HEALTHCARE PO 00134536OCT2422.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

HEALTHCARE PO 00134536OCT2422.exepowershell.exeHEALTHCARE PO 00134536OCT2422.exe

description	pid	process
Token: SeDebugPrivilege	1956	HEALTHCARE PO 00134536OCT2422.exe
Token: SeDebugPrivilege	1208	powershell.exe
Token: SeDebugPrivilege	468	HEALTHCARE PO 00134536OCT2422.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

HEALTHCARE PO 00134536OCT2422.exe

description	pid	process	target process
PID 1956 wrote to memory of 1208	1956	HEALTHCARE PO 00134536OCT2422.exe	powershell.exe
PID 1956 wrote to memory of 1208	1956	HEALTHCARE PO 00134536OCT2422.exe	powershell.exe
PID 1956 wrote to memory of 1208	1956	HEALTHCARE PO 00134536OCT2422.exe	powershell.exe
PID 1956 wrote to memory of 1208	1956	HEALTHCARE PO 00134536OCT2422.exe	powershell.exe
PID 1956 wrote to memory of 1764	1956	HEALTHCARE PO 00134536OCT2422.exe	schtasks.exe
PID 1956 wrote to memory of 1764	1956	HEALTHCARE PO 00134536OCT2422.exe	schtasks.exe
PID 1956 wrote to memory of 1764	1956	HEALTHCARE PO 00134536OCT2422.exe	schtasks.exe
PID 1956 wrote to memory of 1764	1956	HEALTHCARE PO 00134536OCT2422.exe	schtasks.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe
PID 1956 wrote to memory of 468	1956	HEALTHCARE PO 00134536OCT2422.exe	HEALTHCARE PO 00134536OCT2422.exe

C:\Users\Admin\AppData\Local\Temp\HEALTHCARE PO 00134536OCT2422.exe
"C:\Users\Admin\AppData\Local\Temp\HEALTHCARE PO 00134536OCT2422.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ESrTlJCU.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1208

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ESrTlJCU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE541.tmp"
2⤵
- Creates scheduled task(s)
PID:1764

C:\Users\Admin\AppData\Local\Temp\HEALTHCARE PO 00134536OCT2422.exe
"C:\Users\Admin\AppData\Local\Temp\HEALTHCARE PO 00134536OCT2422.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:468

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE541.tmp
Filesize
1KB

MD5
349bb5618b56b128d165ed6f875fe519

SHA1
67c0fa37d927a3e692894fb4c6bd0374373d5d5b

SHA256
71ee4f0dffb9b3137d18bd991bad43e32f188a521c59d2760b2b9989c6e4a09e

SHA512
2ef9710481de5ea24c844a0bb179d87ce8a55cfc1df851f2ce3d8827ad5e4103627289f22227e2093025d0e065484c2496f75e33213570e7014b52297a929ea1

Download Submit
memory/468-72-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-70-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-67-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-68-0x000000000041E792-mapping.dmp

Download
memory/468-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-64-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/468-78-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/468-75-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1208-57-0x0000000000000000-mapping.dmp

Download
memory/1208-74-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1208-77-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1764-58-0x0000000000000000-mapping.dmp

Download
memory/1956-54-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download
memory/1956-76-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1956-56-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download
memory/1956-55-0x00000000742C0000-0x000000007486B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads