nanocore | 7e71c79883eb025596762b4e0bf86b447039079dfe510ccf13a383b612575fa6

Analysis

max time kernel
141s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:25

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General

Target

3e8acfab95493518077e0028fd0f2dcc.exe
Size

418KB
MD5

3e8acfab95493518077e0028fd0f2dcc
SHA1

916709a0aab1d58c686999f2bdc894e63dc7699a
SHA256

0a5a53bdc5eee30ec63ba27249253d0ad2224bfc7bf3fc790642427a545d2b1f
SHA512

fde4cfa600e96f292996b779814e32ea4b98b45b7ac117f1aa2a98b4d09bdcbcb3cce6602bd8037cd184c12fbc937e73c7d3aeb088bae982e301ebe3bfa8be80
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUwbvl:ITNYrnE3bm/CiejewY5vXN

Score

10^/10

nanocore defense_evasion discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes

activate_away_mode
false
backup_connection_host
178.32.224.116
backup_dns_server
buffer_size
65535
build_time
2018-07-28T12:59:38.488799236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
46218
default_group
tourex
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
4af74541-e3f1-469c-8af7-efe4071b81cf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
[email protected]
primary_dns_server
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
Nanocore family
nanocore

Executes dropped EXE 1 IoCs

pid	Process
2752	ximo2ubzn1i.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	3e8acfab95493518077e0028fd0f2dcc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	3e8acfab95493518077e0028fd0f2dcc.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2684	2752	ximo2ubzn1i.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3e8acfab95493518077e0028fd0f2dcc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2684	regasm.exe
2684	regasm.exe
2684	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2684	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	regasm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2752	2236	3e8acfab95493518077e0028fd0f2dcc.exe	30
PID 2236 wrote to memory of 2752	2236	3e8acfab95493518077e0028fd0f2dcc.exe	30
PID 2236 wrote to memory of 2752	2236	3e8acfab95493518077e0028fd0f2dcc.exe	30
PID 2236 wrote to memory of 2752	2236	3e8acfab95493518077e0028fd0f2dcc.exe	30
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31
PID 2752 wrote to memory of 2684	2752	ximo2ubzn1i.exe	31

C:\Users\Admin\AppData\Local\Temp\3e8acfab95493518077e0028fd0f2dcc.exe
"C:\Users\Admin\AppData\Local\Temp\3e8acfab95493518077e0028fd0f2dcc.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
  "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
418KB

MD5
d1554ffe8c1ecda09dc733305d8b559f

SHA1
b7f5544e474a00850cccfbf379d1b920b0514bb8

SHA256
c5638e1d32e2f635aa1c6e630357fb4aad6660614a582190daf2b2a614912555

SHA512
0af4529d46e14d988279022ba364c78cc42f1e01dc752d534562d44280d92e0a9bdc9c84ac1183211987586f5074aac27c9e7c9dd8056a378b676f57760ded94

Download Submit
memory/2236-15-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2236-1-0x00000000001A0000-0x000000000020E000-memory.dmp

Filesize
440KB

Download
memory/2236-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2236-3-0x0000000001EC0000-0x0000000001EFC000-memory.dmp

Filesize
240KB

Download
memory/2236-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/2684-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-32-0x0000000000AF0000-0x0000000000AFA000-memory.dmp

Filesize
40KB

Download
memory/2684-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-31-0x0000000000AD0000-0x0000000000AEE000-memory.dmp

Filesize
120KB

Download
memory/2684-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2684-30-0x0000000000AC0000-0x0000000000ACA000-memory.dmp

Filesize
40KB

Download
memory/2684-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2752-13-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2752-14-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2752-12-0x00000000002F0000-0x000000000035E000-memory.dmp

Filesize
440KB

Download
memory/2752-33-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2752-34-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download