nanocore | 40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9

General

Target

40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe
Size

413KB
MD5

c1cf35e9c306443d88821da407118231
SHA1

c00baf49364ea7be90390412f5893e7bc7be5e2b
SHA256

40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9
SHA512

ac439070c1c1e4fce0911a11d4c264ba3ae301c1abe78530988ce9462303f08487e151fa8fb1f03122e6496bed535d8ef841add785bcd6ee6c80925e4c345543
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUg:ITNYrnE3bm/CiejewY5vn

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:

40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
3876	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.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 3876 set thread context of 4420	3876	ximo2ubzn1i.exe	87

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.exe40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.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	40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regasm.exe

pid	Process
4420	regasm.exe
4420	regasm.exe
4420	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
4420	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	4420	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 4616 wrote to memory of 3876	4616	40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe	86
PID 4616 wrote to memory of 3876	4616	40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe	86
PID 4616 wrote to memory of 3876	4616	40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe	86
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87
PID 3876 wrote to memory of 4420	3876	ximo2ubzn1i.exe	87

C:\Users\Admin\AppData\Local\Temp\40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe
"C:\Users\Admin\AppData\Local\Temp\40f01221f9c4d6fcf2addeaf6092015aaa10523b478ea3332943bf3dca4846c9.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- 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:3876
- - 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:4420

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
18a224e7a4267994e816b61d1474094f

SHA1
89c0acf2c95ff0998d1df8058280010b72fd8d13

SHA256
b31e9299b22981476a5de5c8a2a7fcecf7c83faea8a563f83649e1f0104099b4

SHA512
293a83fe38a80daedb8bef451711d55f276e319971748610b81c4158f5f40c5c9bac45ebbab698525cfc0910e0e420d5ba4fc4c71076e58dea01da0c4a93483b

Download Submit
memory/3876-35-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-33-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-22-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/3876-21-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4420-28-0x0000000005350000-0x00000000053EC000-memory.dmp

Filesize
624KB

Download
memory/4420-32-0x00000000055E0000-0x00000000055EA000-memory.dmp

Filesize
40KB

Download
memory/4420-36-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4420-31-0x0000000005470000-0x000000000548E000-memory.dmp

Filesize
120KB

Download
memory/4420-30-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/4420-27-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4420-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4420-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4420-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4616-3-0x0000000005590000-0x0000000005622000-memory.dmp

Filesize
584KB

Download
memory/4616-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/4616-20-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4616-5-0x0000000074BF0000-0x00000000753A0000-memory.dmp

Filesize
7.7MB

Download
memory/4616-6-0x0000000005A10000-0x0000000005A4C000-memory.dmp

Filesize
240KB

Download
memory/4616-2-0x0000000005AA0000-0x0000000006044000-memory.dmp

Filesize
5.6MB

Download
memory/4616-1-0x0000000000AB0000-0x0000000000B1E000-memory.dmp

Filesize
440KB

Download
memory/4616-4-0x0000000005520000-0x000000000552A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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