nanocore | e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15

General

Target

e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe
Size

416KB
MD5

7733ac590c5acfdd2d38ccff32e74850
SHA1

2bed655b8239f732cae231eac56aaa62d22aae67
SHA256

e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15
SHA512

bebbd9c6be29344b9f0aabec73b88b665c84bb6a6d8ff9a0dbbbc96318e9140c59b7f68390089ef2a19ea5e933e46edc512a4f561e8cc894b2012b200d88730b
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7k:ITNYrnE3bm/CiejewY5vH

Score

10^/10

nanocore defense_evasion discovery 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
Nanocore family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	ximo2ubzn1i.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.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 3532 set thread context of 3024	3532	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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.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
3024	regasm.exe
3024	regasm.exe
3024	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3024	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3024	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4036 wrote to memory of 3532	4036	e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe	82
PID 4036 wrote to memory of 3532	4036	e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe	82
PID 4036 wrote to memory of 3532	4036	e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe	82
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83
PID 3532 wrote to memory of 3024	3532	ximo2ubzn1i.exe	83

C:\Users\Admin\AppData\Local\Temp\e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe
"C:\Users\Admin\AppData\Local\Temp\e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4036
- 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:3532
- - 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:3024

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
416KB

MD5
c8c063f2547943efc2e05e8ac0c6311b

SHA1
d4011502521c5986c815b36427ebfd5cff09f455

SHA256
26e7acf29854473e0a80322b7fc107972283351efa360008e1e1a5a0b913a8b2

SHA512
7b2824be4dcfb5b69898879d7f953ce0865e2aeb665a547b32a81b36aaf3cda52d5fe0cb6a17196eaf22bf89e4234a64bc75c9c19e79e32ed938da069fbca2da

Download Submit
memory/3024-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3024-36-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-32-0x0000000005DB0000-0x0000000005DBA000-memory.dmp

Filesize
40KB

Download
memory/3024-31-0x00000000053D0000-0x00000000053EE000-memory.dmp

Filesize
120KB

Download
memory/3024-30-0x00000000053C0000-0x00000000053CA000-memory.dmp

Filesize
40KB

Download
memory/3024-28-0x0000000004EE0000-0x0000000004F7C000-memory.dmp

Filesize
624KB

Download
memory/3024-27-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/3024-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3024-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3532-22-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/3532-21-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/3532-33-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/3532-35-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/4036-0-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

Filesize
4KB

Download
memory/4036-20-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/4036-6-0x0000000005820000-0x000000000585C000-memory.dmp

Filesize
240KB

Download
memory/4036-5-0x0000000074EF0000-0x00000000756A0000-memory.dmp

Filesize
7.7MB

Download
memory/4036-4-0x0000000005340000-0x000000000534A000-memory.dmp

Filesize
40KB

Download
memory/4036-3-0x0000000005380000-0x0000000005412000-memory.dmp

Filesize
584KB

Download
memory/4036-2-0x0000000005890000-0x0000000005E34000-memory.dmp

Filesize
5.6MB

Download
memory/4036-1-0x00000000008D0000-0x000000000093E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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