nanocore | 21c60fcbc947a644af73ca89b387a2cf0e27d8ff54883755893e0fe2e706e46e

General

Target
d5f4a624baaa4f48e3e2b2d87890454f.exe
Size 723KB
Sample230218-ktbbssbb6z
SHA256 21c60fcbc947a644af73ca89b387a2cf0e27d8ff54883755893e0fe2e706e46e
MD5 d5f4a624baaa4f48e3e2b2d87890454f
SHA1 261f35933ea83c785128732bf1c629fb912b747c
SHA512 ff2deb347e470b4fdcaaeaf505c57a9f1be71c3a00fb8985890cc8509f430aa712dbdee943141d31af66d9b673cbe300f213c52d3f197b8b370c6accf0009b4e
SSDEEP 12288:it5RqDSuSDsv9tzFpXDrRAxU/jfQDoyUbH1Ps/izgUNOTsCKMW9xWnP++AwiLDsT:it5RqDSu/pHiU/jYcL7a/stCNWrWWB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

tzitziklishop.ddns.net:1665
127.0.0.1:1665

Mutex

be28fce4-4930-4ffe-96ed-0110cf99b889

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-11-05T12:54:30.362923036Z
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
1665
default_group
SecureKMT
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
be28fce4-4930-4ffe-96ed-0110cf99b889
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
tzitziklishop.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

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\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe"	d5f4a624baaa4f48e3e2b2d87890454f.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	d5f4a624baaa4f48e3e2b2d87890454f.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1536 set thread context of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	d5f4a624baaa4f48e3e2b2d87890454f.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	d5f4a624baaa4f48e3e2b2d87890454f.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
4832	schtasks.exe
4432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4660	d5f4a624baaa4f48e3e2b2d87890454f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 1536 wrote to memory of 4660	1536	d5f4a624baaa4f48e3e2b2d87890454f.exe	92
PID 4660 wrote to memory of 4832	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe	93
PID 4660 wrote to memory of 4832	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe	93
PID 4660 wrote to memory of 4832	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe	93
PID 4660 wrote to memory of 4432	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe	95
PID 4660 wrote to memory of 4432	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe	95
PID 4660 wrote to memory of 4432	4660	d5f4a624baaa4f48e3e2b2d87890454f.exe	95

C:\Users\Admin\AppData\Local\Temp\d5f4a624baaa4f48e3e2b2d87890454f.exe
"C:\Users\Admin\AppData\Local\Temp\d5f4a624baaa4f48e3e2b2d87890454f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Users\Admin\AppData\Local\Temp\d5f4a624baaa4f48e3e2b2d87890454f.exe
  "C:\Users\Admin\AppData\Local\Temp\d5f4a624baaa4f48e3e2b2d87890454f.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
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBF6.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4832
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC84.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:4432

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpBF6.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpBF6.tmp
Size 1KB
SHA256 8361357cba3b16885463519ebd68eee474b0029be5c1070e8a5ac5b04046c47f
MD5 4e5d90796a60cc64cc44aaac1b6e58d1
SHA1 04304e5a5698d6ed5bc94367398907bdcf8783d3
SHA512 baf276169efa155be2f33d7d95d4c7a5ec66c9c8a04ce52eff0f01bd0af1b5572a78257a0b5e07a0f1d9963229dd7f2ad9363f120c9a0f531ebad9052a975776
MD5 SHA1 SHA512

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tmpC84.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpC84.tmp
Size 1KB
SHA256 062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207
MD5 4b7ef560289c0f62d0baf6f14f48a57a
SHA1 8331acb90dde588aa3196919f6e847f398fd06d1
SHA512 ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8
MD5 SHA1 SHA512

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memory/1536-132-0x0000000000380000-0x000000000043A000-memory.dmp

Download

memory/1536-133-0x0000000005290000-0x0000000005834000-memory.dmp

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memory/1536-134-0x0000000004CE0000-0x0000000004D72000-memory.dmp

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memory/1536-135-0x0000000004CA0000-0x0000000004CAA000-memory.dmp

Download

memory/1536-136-0x00000000076C0000-0x000000000775C000-memory.dmp

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memory/4660-138-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4660-143-0x0000000006BA0000-0x0000000006C06000-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