nanocore | ce63f32e218780e78c1c6809c7f47b9105edd5980450d61881ea14311b5511d5

General

Target

55b78c947cfe5364c1af28c90343a070N.exe
Size

282KB
MD5

55b78c947cfe5364c1af28c90343a070
SHA1

2e287abf7dd0a7f2d9aba8bf9045eaa6081ad01a
SHA256

ce63f32e218780e78c1c6809c7f47b9105edd5980450d61881ea14311b5511d5
SHA512

ab670c08519173fdb1bd03852bba127f9302e945a69769a6dbf4c3a0f98378cf437ffc3a10b09093780c18c142444a9d8aefab3de69c7d90e0e21fba4dbc645d
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfI:boSeGUA5YZazpXUmZhZ6S5

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

Executes dropped EXE 2 IoCs

pid	Process
2632	a1punf5t2of.exe
528	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2888	55b78c947cfe5364c1af28c90343a070N.exe
2632	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	55b78c947cfe5364c1af28c90343a070N.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 2632 set thread context of 528	2632	a1punf5t2of.exe	31

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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55b78c947cfe5364c1af28c90343a070N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
528	a1punf5t2of.exe
528	a1punf5t2of.exe
528	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
528	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	528	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2888 wrote to memory of 2632	2888	55b78c947cfe5364c1af28c90343a070N.exe	30
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31
PID 2632 wrote to memory of 528	2632	a1punf5t2of.exe	31

C:\Users\Admin\AppData\Local\Temp\55b78c947cfe5364c1af28c90343a070N.exe
"C:\Users\Admin\AppData\Local\Temp\55b78c947cfe5364c1af28c90343a070N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe
  "C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2632
- - 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:528

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

System Information Discovery

2

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

\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe

Filesize
282KB

MD5
d8e49bc10f5f9a67995c0a47027f0f3e

SHA1
b29dc4b048dca1ca8365d69aec435ad1f4b9c424

SHA256
e085bb2ce7702a776e84933a7397108a5a5ec99cf7327b45905ce0aafab250cc

SHA512
db324798ffbbe24e161f55e05ab17158cef6717865adbcd0f0b33c9d47683e74a89c4933364f52084b5d80af44c4b752b5af88442bec1de472f93c34e7550615

Download Submit
memory/528-38-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-32-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/528-40-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/528-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2632-42-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-16-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-19-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-15-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-17-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-21-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-18-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2632-20-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2888-14-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2888-0-0x0000000074131000-0x0000000074132000-memory.dmp

Filesize
4KB

Download
memory/2888-1-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2888-5-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2888-4-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2888-2-0x0000000074130000-0x00000000746DB000-memory.dmp

Filesize
5.7MB

Download
memory/2888-3-0x0000000074130000-0x00000000746DB000-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