nanocore | 40bbc3b0772a0365c7c91858d53373935cd72bbe27a431c976cafa12a2305d2e

General

Target
cliff.kuhfeldt's CV.exe
Size 764KB
Sample211115-ewdl2sebdr
SHA256 40bbc3b0772a0365c7c91858d53373935cd72bbe27a431c976cafa12a2305d2e
MD5 90c35c3c65e1decb48ed5a35dc012193
SHA1 bf34ed7633d5d3e63f159444a609391a4970d19b
SHA512 06753e4245e762e91df527f2534db5fab4fde05f7f39aed3467dd4256ee7cb15edb2349c7c6bc2628111eec2e21d4a701fa4b78a6c82f3812a46c1af47d91c67
MD5 SHA1 SHA512

Score

10^/10

nanocore evasion keylogger persistence spyware stealer suricata trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

dera31.ddns.net:1187
195.133.18.211:1187

Mutex

f4157c11-54e5-4893-8a60-6856b8471d8c

Attributes

activate_away_mode
true
backup_connection_host
195.133.18.211
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-08-13T08:45:25.192912336Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1187
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
f4157c11-54e5-4893-8a60-6856b8471d8c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
dera31.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
suricata: ET MALWARE Possible NanoCore C2 60B
suricata: ET MALWARE Possible NanoCore C2 60B
suricata

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\AGP Service = "C:\\Program Files (x86)\\AGP Service\\agpsvc.exe"	cliff.kuhfeldt's CV.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	cliff.kuhfeldt's CV.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 684 set thread context of 1372	684	cliff.kuhfeldt's CV.exe	28

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\AGP Service\agpsvc.exe	cliff.kuhfeldt's CV.exe
File opened for modification	C:\Program Files (x86)\AGP Service\agpsvc.exe	cliff.kuhfeldt's CV.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1372	cliff.kuhfeldt's CV.exe
1372	cliff.kuhfeldt's CV.exe
1372	cliff.kuhfeldt's CV.exe
1372	cliff.kuhfeldt's CV.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1372	cliff.kuhfeldt's CV.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1372	cliff.kuhfeldt's CV.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28
PID 684 wrote to memory of 1372	684	cliff.kuhfeldt's CV.exe	28

C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe
"C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:684
- C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe
  "C:\Users\Admin\AppData\Local\Temp\cliff.kuhfeldt's CV.exe"
  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
  PID:1372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/684-55-0x0000000076761000-0x0000000076763000-memory.dmp

Download

memory/684-56-0x00000000004A0000-0x00000000004A1000-memory.dmp

Download

memory/684-57-0x00000000004A1000-0x00000000004A2000-memory.dmp

Download

memory/1372-58-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1372-59-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1372-60-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1372-61-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1372-62-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/1372-65-0x0000000000E10000-0x0000000000E11000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads