nanocore | b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c

General

Target

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe
Size

415KB
MD5

9a1bc53fb599e522844243dcef5f27e8
SHA1

25eb2abab65a2fd76f7cd420214f0789edb83bfd
SHA256

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c
SHA512

bde01fea16c83402e9e1f02b4d38a7e95eee6aa5a67a5f64301af971c9d2ed2b699e92cb9a2ee1489ab5d3861a0de4319aff4eb96abeb36fb34d6ffa8ed093a8
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUwK:ITNYrnE3bm/CiejewY5vu

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
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

Processes:

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
4580	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.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 4580 set thread context of 1720	4580	ximo2ubzn1i.exe	91

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:

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exeximo2ubzn1i.exeregasm.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.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

Processes:

regasm.exe

pid	Process
1720	regasm.exe
1720	regasm.exe
1720	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
1720	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	1720	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 3552 wrote to memory of 4580	3552	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	90
PID 3552 wrote to memory of 4580	3552	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	90
PID 3552 wrote to memory of 4580	3552	b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe	90
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91
PID 4580 wrote to memory of 1720	4580	ximo2ubzn1i.exe	91

C:\Users\Admin\AppData\Local\Temp\b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe
"C:\Users\Admin\AppData\Local\Temp\b1d5ed26e4c2a2d3a0bd199829ed8797d73a86263448612bbfa7d5e77881809c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3552
- 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:4580
- - 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:1720

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
415KB

MD5
2851749b9d4183f004a93ebd40b2ce56

SHA1
26f5fbffb044a5747c696b0f491747356eff73c4

SHA256
f9bb3e06cdcf8eef5b7ef2c4a1ee75180d9b7f748ca14e6dc66c0aa5cb47eca7

SHA512
7e304b6844a9cdaf6c94ad0731b3f4f5e57b19ecf5d8dbf0c8d04ada87a5f3f81bb1c3e7e708599e17e2dc429101053e8d3d9cbac68d32214c2fe7feb141e36b

Download Submit
memory/1720-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1720-36-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/1720-32-0x0000000006010000-0x000000000601A000-memory.dmp

Filesize
40KB

Download
memory/1720-31-0x00000000053A0000-0x00000000053BE000-memory.dmp

Filesize
120KB

Download
memory/1720-30-0x0000000005180000-0x000000000518A000-memory.dmp

Filesize
40KB

Download
memory/1720-28-0x0000000005190000-0x000000000522C000-memory.dmp

Filesize
624KB

Download
memory/1720-27-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/1720-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1720-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3552-5-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/3552-20-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/3552-6-0x00000000052D0000-0x000000000530C000-memory.dmp

Filesize
240KB

Download
memory/3552-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

Filesize
4KB

Download
memory/3552-4-0x0000000004FC0000-0x0000000004FCA000-memory.dmp

Filesize
40KB

Download
memory/3552-3-0x0000000004F00000-0x0000000004F92000-memory.dmp

Filesize
584KB

Download
memory/3552-2-0x00000000055C0000-0x0000000005B64000-memory.dmp

Filesize
5.6MB

Download
memory/3552-1-0x00000000004C0000-0x000000000052E000-memory.dmp

Filesize
440KB

Download
memory/4580-22-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4580-21-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4580-33-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download
memory/4580-35-0x00000000745E0000-0x0000000074D90000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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