nanocore | 2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1

General

Target

2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe
Size

280KB
MD5

07679b4111b6721e3bb3d7c1f1c76330
SHA1

4478dc67916f81382a49183939e5476c2914cb79
SHA256

2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1
SHA512

e2a35b47ee89db2dbd345444c29a481b3e649eb91e0af85a4bd019604e70f3dcc5a5ead917535dd472f6414fbf0cec3013989f7c3e1f49e412325434cf98359a
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fL:boSeGUA5YZazpXUmZhZ6z

Score

10^/10

nanocore defense_evasion discovery 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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe

Executes dropped EXE 2 IoCs

pid	Process
3284	a1punf5t2of.exe
2188	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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_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 3284 set thread context of 2188	3284	a1punf5t2of.exe	97

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	2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.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
2188	a1punf5t2of.exe
2188	a1punf5t2of.exe
2188	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2188	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 3284	2624	2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe	92
PID 2624 wrote to memory of 3284	2624	2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe	92
PID 2624 wrote to memory of 3284	2624	2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe	92
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97
PID 3284 wrote to memory of 2188	3284	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe
"C:\Users\Admin\AppData\Local\Temp\2ed38f5f79f5d2c3e357362921af1948943becf23a78a1d7ef080b1daa87b1e1.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2624
- 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:3284
- - 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:2188

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
280KB

MD5
056c66242fb4fb8a28f115cd166059d0

SHA1
5f7a34ac1894a9cfa7a903531f3214994cac0ba9

SHA256
63fc713cc5f3ba4358e4c812eefa63e41cb2828c6f6df3f02e7402778249c3e3

SHA512
5da6435d5d4359a435163d4e13897f0559a214f38c7d6f34d3c160d08dbf3619f608b3bdd43b303573937bb86b605a56d6690f35c0cb174d61dda46cff3bd13f

Download Submit
memory/2188-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2188-41-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2188-38-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2188-37-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2188-35-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2188-34-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2188-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2188-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2624-6-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2624-3-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2624-1-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2624-2-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2624-4-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/2624-5-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2624-0-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/2624-7-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/2624-22-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-28-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-27-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-26-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-25-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-21-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-23-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-40-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3284-24-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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