nanocore | b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343

General

Target

b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe
Size

255KB
MD5

dc183d453a35c1c81f84688545b03a94
SHA1

92a036bb8f123b3fc19db1fcfffa6505763bb856
SHA256

b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343
SHA512

54b0bd98853cfa8456f7a23a53bc4d8a3e9484090a4704ec7633ef48f149451218cef7964bd0dafbbf86d2c916e6e527724fd89d9526bdcfbf4ff2ce0f659d1e
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+l:EeGUA5YZazpXUmZhll

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sysupdate24.ddns.net:45400

Mutex

ae82ab7f-db07-49ee-9d2b-76075d76f37f

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
buffer_size
65535
build_time
2020-04-24T17:41:53.492468936Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
45400
default_group
Default
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
ae82ab7f-db07-49ee-9d2b-76075d76f37f
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
sysupdate24.ddns.net
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	b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe

Executes dropped EXE 2 IoCs

pid	Process
3180	a1punf5t2of.exe
4636	a1punf5t2of.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\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a1punf5t2of.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3180 set thread context of 4636	3180	a1punf5t2of.exe	90

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	b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4636	a1punf5t2of.exe
4636	a1punf5t2of.exe
4636	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4636	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4636	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 3180	1048	b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe	86
PID 1048 wrote to memory of 3180	1048	b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe	86
PID 1048 wrote to memory of 3180	1048	b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe	86
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90
PID 3180 wrote to memory of 4636	3180	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe
"C:\Users\Admin\AppData\Local\Temp\b3948ef552e3de44c9ca24d5f30d0633617efd8bc61acbe3f1a85a3eb84e3343.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3180
- - C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
    "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
    3⤵
    - Executes dropped EXE
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:4636

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\b1b2dqljdx3\a1punf5t2of.exe

Filesize
255KB

MD5
6cc6a7b3edc11da17bdbaca66bff07ef

SHA1
7f732627d18af133766510d57875231e1eaa0b5c

SHA256
3036f68c5e5d8a1e418626ee21446c8f4f8aaece41b262a91144d41cede4b7fe

SHA512
61e5ea591512688d4d9cb6dd82334bba0171cae0516a62adf8434b09da9898b419d73066b106d826c0906e92985b133a4cc72d74d0223da45d248a68ae2a3a60

Download Submit
memory/1048-0-0x0000000074C02000-0x0000000074C03000-memory.dmp

Filesize
4KB

Download
memory/1048-1-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/1048-2-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/1048-3-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/1048-4-0x0000000074C02000-0x0000000074C03000-memory.dmp

Filesize
4KB

Download
memory/1048-5-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/1048-6-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/1048-7-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/1048-21-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-22-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-24-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-23-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-25-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-26-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-27-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/3180-39-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4636-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4636-34-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4636-33-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4636-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4636-36-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4636-37-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download
memory/4636-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4636-40-0x0000000074C00000-0x00000000751B1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads