nanocore | 5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9

General

Target

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe
Size

413KB
MD5

db5951f034577f923a0736f805d51a16
SHA1

62f4f0e7a56322cc0f25b6c9554a3b9ded04b762
SHA256

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9
SHA512

8a7146bc2c107971bca26a9a5c794133287a9f160dbf47b613b8ed9105c5331836e935a4c62fc13e9276e48839b9194384b5aeae3bec0b8017a9283dd41d2923
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUa:ITNYrnE3bm/CiejewY5vB

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[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

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
2128	ximo2ubzn1i.exe

Loads dropped DLL 1 IoCs

Processes:

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe

pid	Process
1044	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

regasm.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

ximo2ubzn1i.exe

description	pid	Process	procid_target
PID 2128 set thread context of 2728	2128	ximo2ubzn1i.exe	29

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

Processes:

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exeximo2ubzn1i.exeregasm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.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 2 IoCs

Processes:

regasm.exe

pid	Process
2728	regasm.exe
2728	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
2728	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	2728	regasm.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 1044 wrote to memory of 2128	1044	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	28
PID 1044 wrote to memory of 2128	1044	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	28
PID 1044 wrote to memory of 2128	1044	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	28
PID 1044 wrote to memory of 2128	1044	5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe	28
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29
PID 2128 wrote to memory of 2728	2128	ximo2ubzn1i.exe	29

C:\Users\Admin\AppData\Local\Temp\5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe
"C:\Users\Admin\AppData\Local\Temp\5b4735497ad84ff66f437586921df3ceeda71d205cccd2b19924f87818d3c0f9.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1044
- 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:2128
- - 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:2728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
413KB

MD5
53a605bd21f63a1a478262df0155801b

SHA1
5dbfa9c79802888b0bf58ee5ee3d3755cfdb6315

SHA256
06e094775de4c816f454af723076d997d8f1a81b93f908d951aae4c332ee41be

SHA512
1d593bf1cae36f7659d2909d666a507a7d3c0e495934b381cf5b8c00052f6eae6eb61b086ba408eb20c12980dc7217bbec6ac542d5f3d92ae1daee057a731d4c

Download Submit
memory/1044-1-0x0000000001340000-0x00000000013AE000-memory.dmp

Filesize
440KB

Download
memory/1044-2-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/1044-3-0x0000000000C90000-0x0000000000CCC000-memory.dmp

Filesize
240KB

Download
memory/1044-15-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/1044-0-0x00000000740EE000-0x00000000740EF000-memory.dmp

Filesize
4KB

Download
memory/2128-38-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/2128-13-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/2128-12-0x0000000000C00000-0x0000000000C6E000-memory.dmp

Filesize
440KB

Download
memory/2128-14-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/2128-39-0x00000000740E0000-0x00000000747CE000-memory.dmp

Filesize
6.9MB

Download
memory/2728-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2728-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-33-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-35-0x00000000003A0000-0x00000000003AA000-memory.dmp

Filesize
40KB

Download
memory/2728-36-0x0000000000540000-0x000000000055E000-memory.dmp

Filesize
120KB

Download
memory/2728-37-0x00000000003B0000-0x00000000003BA000-memory.dmp

Filesize
40KB

Download
memory/2728-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2728-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads