nanocore | 4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206

General

Target

4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe
Size

279KB
MD5

994a3919eed25f9a3c83823b002f7674
SHA1

649ef09e6f6db43b27bde0a093649868f3b9f8d7
SHA256

4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206
SHA512

0f6b5963bc4a16377c8efd4b36a70335280734d8c7773c9b7634a217bb9c2ada0391b81e555699d6a5444fb147954543df5ad85e950dd17b4f4bc35dd42741e0
SSDEEP

6144:boy5p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ66fr:boSeGUA5YZazpXUmZhZ6z

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe

Executes dropped EXE 2 IoCs

pid	Process
1580	a1punf5t2of.exe
2924	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.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 1580 set thread context of 2924	1580	a1punf5t2of.exe	100

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	4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.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
2924	a1punf5t2of.exe
2924	a1punf5t2of.exe
2924	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2924	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2924	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 1580	3668	4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe	99
PID 3668 wrote to memory of 1580	3668	4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe	99
PID 3668 wrote to memory of 1580	3668	4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe	99
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100
PID 1580 wrote to memory of 2924	1580	a1punf5t2of.exe	100

C:\Users\Admin\AppData\Local\Temp\4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe
"C:\Users\Admin\AppData\Local\Temp\4ec280ad769ff95e77868ea111bce4e16986c0eb177aa9382cb39b895bb3f206.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- 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:1580
- - 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:2924

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
279KB

MD5
324da0707939762901a94971e8c7c96e

SHA1
717d7e6c02bd0364360f770cdf3d510619289a0e

SHA256
594e479f1c4f52160e19b7e70f5a8b0ab257a6b0ce1a84da0f0cd450809590be

SHA512
964f5445f92707f94bc22890db0d82ea1b232e18db2466814d4969e25c7a9b6269cece3c4fd876d1af1ab7d65713564783cf2694b482ca5da137a1b21931e481

Download Submit
memory/1580-22-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-41-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-28-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-27-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-26-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-25-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-24-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/1580-23-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2924-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2924-42-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-39-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-38-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-35-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-36-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-34-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2924-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3668-4-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/3668-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/3668-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3668-3-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3668-21-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3668-5-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3668-6-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3668-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3668-7-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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