nanocore | 075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685

General

Target

075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe
Size

413KB
MD5

40589e95b838e591668adef85793cdc0
SHA1

7c6a8dd522ae4e2b95607f75947b0d46b3b7d53a
SHA256

075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685
SHA512

37d42778e59afe4681b7baf5caf7716d00fd1451c48554675a3e2a73a9bc9ea55c9943dad95010535311335f3b2174718c4c5f3dda16c68a8a4cba1397e9f09f
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUU:ITNYrnE3bm/CiejewY5vv

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
1176	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.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 1176 set thread context of 4244	1176	ximo2ubzn1i.exe	83

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:

ximo2ubzn1i.exeregasm.exe075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regasm.exe

pid	Process
4244	regasm.exe
4244	regasm.exe
4244	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
4244	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	4244	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 3332 wrote to memory of 1176	3332	075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe	82
PID 3332 wrote to memory of 1176	3332	075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe	82
PID 3332 wrote to memory of 1176	3332	075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe	82
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83
PID 1176 wrote to memory of 4244	1176	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe
"C:\Users\Admin\AppData\Local\Temp\075a903e2fe6bb505b10b34e65bd92fdc8a14ca032fff72be35afb8a87429685N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3332
- 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:1176
- - 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:4244

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

Query Registry

1

T1012

System Information Discovery

3

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

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

Filesize
413KB

MD5
123bb3f6c6961c1efe65e421274b1fb3

SHA1
1fc83ebecddeb45ef4226af680203091db50988a

SHA256
a1210a63324e8d38374b6f21a9684f2901b9fb2d8ad480c98be7f5b27da7986f

SHA512
b4c9ca801b4b584bd6c23d435525775dfb0aa672e56dda7771fc57895b0133bd35828bbbfab0d8bff4ede8cb3a03b5ed00e84b8f6645a9451c688b8bd671d87b

Download Submit
memory/1176-35-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/1176-33-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/1176-22-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/1176-21-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/3332-5-0x0000000005740000-0x000000000574A000-memory.dmp

Filesize
40KB

Download
memory/3332-6-0x0000000005920000-0x000000000595C000-memory.dmp

Filesize
240KB

Download
memory/3332-0-0x000000007508E000-0x000000007508F000-memory.dmp

Filesize
4KB

Download
memory/3332-20-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/3332-4-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/3332-3-0x0000000005690000-0x0000000005722000-memory.dmp

Filesize
584KB

Download
memory/3332-1-0x0000000000C30000-0x0000000000C9E000-memory.dmp

Filesize
440KB

Download
memory/3332-2-0x0000000005D30000-0x00000000062D4000-memory.dmp

Filesize
5.6MB

Download
memory/4244-27-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download
memory/4244-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4244-28-0x00000000056B0000-0x000000000574C000-memory.dmp

Filesize
624KB

Download
memory/4244-30-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/4244-31-0x00000000058D0000-0x00000000058EE000-memory.dmp

Filesize
120KB

Download
memory/4244-32-0x0000000005B00000-0x0000000005B0A000-memory.dmp

Filesize
40KB

Download
memory/4244-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4244-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4244-36-0x0000000075080000-0x0000000075830000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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