nanocore | 5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67

General

Target

5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe
Size

282KB
MD5

ae05ab72d8dbb35a8b17af6681139515
SHA1

76619f7e9ff8c13ad4ceb0d2f694eff58941e34c
SHA256

5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67
SHA512

06f9e06e5a953b36a8d6706d788e931ae7117ba5075da984b52209113350434f026a68197e9acfa98a96991092f82f4a0d242f7f0a6d3a3d13561e73564b45db
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fKkfc:boSeGUA5YZazpXUmZhZ6SV

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
2772	a1punf5t2of.exe
2580	a1punf5t2of.exe

Loads dropped DLL 2 IoCs

pid	Process
2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe
2772	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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.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 2772 set thread context of 2580	2772	a1punf5t2of.exe	32

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	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2580	a1punf5t2of.exe
2580	a1punf5t2of.exe
2580	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2580	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2580	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2360 wrote to memory of 2772	2360	5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe	31
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32
PID 2772 wrote to memory of 2580	2772	a1punf5t2of.exe	32

C:\Users\Admin\AppData\Local\Temp\5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe
"C:\Users\Admin\AppData\Local\Temp\5b41291f73a514e0f2e432f4cf3345d5288af613c04b1c7549cd7d30c6d96a67.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- 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:2772
- - 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:2580

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
282KB

MD5
48d26b7282242e721ecff6a3063d26b8

SHA1
4bcd4c1485bfe3572fd012a2c07c522fc7465f6b

SHA256
7257a78164ca6ec55611eb253544bd39bf847073c2430e59e1a0067d3272bbbf

SHA512
e2c63343ba9402b9e618a4ba1b9331c07921b86bd93ff9db22d8d8b695e219b7b71c1476241e826fc73fc1404c0728c5fb4262aab1e5334404b9cc87babfce76

Download Submit
memory/2360-14-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-1-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-2-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-3-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-4-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-5-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2360-0-0x0000000074F21000-0x0000000074F22000-memory.dmp

Filesize
4KB

Download
memory/2580-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2580-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2580-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2580-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2580-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2580-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2580-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2580-36-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2772-19-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-15-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-16-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-18-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-17-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-39-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads