nanocore | d51f21ff25f795d8e35ceee54a3e2e46183f46eee6ba3f9fe2cf94893ef6bc63

General

Target
RECEIPT.EXE
Size 594KB
Sample200723-ppzawdvs6e
SHA256 d51f21ff25f795d8e35ceee54a3e2e46183f46eee6ba3f9fe2cf94893ef6bc63
MD5 7d407d39196574f7baa80c9bd553f6ad
SHA1 a0283fbef34d6f21452fbf3acf8b57839bb9af82
SHA512 54767c8b14bec87203bcd02744ef663958fc6985f8ad7315dda972ca44435b2c29f365a0940bf01bb10d10dd08fbcf6ea5f91288fb4239bd44c8502027d9be11
MD5 SHA1 SHA512

Score

10^/10

evasion trojan keylogger stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

u852117.nvpn.to:5638

Mutex

c20191a5-cd52-4887-8771-2d1dca5667b7

Attributes

activate_away_mode
true
backup_connection_host
u852117.nvpn.to
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-03-19T15:09:07.734275836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
5638
default_group
BEGINS
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
c20191a5-cd52-4887-8771-2d1dca5667b7
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
u852117.nvpn.to
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

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

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

pid	Process
1760	schtasks.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 1760	1456	RECEIPT.EXE	26
PID 1456 wrote to memory of 1760	1456	RECEIPT.EXE	26
PID 1456 wrote to memory of 1760	1456	RECEIPT.EXE	26
PID 1456 wrote to memory of 1760	1456	RECEIPT.EXE	26
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28
PID 1456 wrote to memory of 1852	1456	RECEIPT.EXE	28

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1456 set thread context of 1852	1456	RECEIPT.EXE	28

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1852	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1852	RegSvcs.exe
1852	RegSvcs.exe
1852	RegSvcs.exe
1852	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1852	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\RECEIPT.EXE
"C:\Users\Admin\AppData\Local\Temp\RECEIPT.EXE"
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1456
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oSyQOVtiqYEgy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp17B4.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1760
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "{path}"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  PID:1852

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

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1852-2-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1852-4-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1852-5-0x0000000000400000-0x0000000000438000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads