nanocore | cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626

General

Target

cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe
Size

254KB
MD5

1fd9f7947213241a383352a257d08925
SHA1

08882444b1d9b86a8ee534b39ba63f54a5539951
SHA256

cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626
SHA512

0a6bc1e5c9122eb58183a874f44e34c2e02b610e9d934782487dca6660b2cf312922a462b75b656a8236dbf2a4f91fa5e8570a25007d286759053db1055cca5d
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ38:EeGUA5YZazpXUmZhY8

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe

Executes dropped EXE 2 IoCs

pid	Process
1300	a1punf5t2of.exe
3704	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.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 1300 set thread context of 3704	1300	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	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3704	a1punf5t2of.exe
3704	a1punf5t2of.exe
3704	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3704	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3704	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 1300	4592	cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe	96
PID 4592 wrote to memory of 1300	4592	cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe	96
PID 4592 wrote to memory of 1300	4592	cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe	96
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97
PID 1300 wrote to memory of 3704	1300	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe
"C:\Users\Admin\AppData\Local\Temp\cfe1acbb9e55ad7a658bef86a48ad870993e2637d55b99105537e42486074626.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4592
- 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:1300
- - 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:3704

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
254KB

MD5
c21c8dc8b9b73044cfd7ec2001c1d1cb

SHA1
ac164cb95251a2ae8992b5651d15147439763a70

SHA256
b2d0b7bfcbb9b0bdd1cacf0d3a78c05c8aca882c92310eef6923e4f3599413e8

SHA512
13b95677a8245b67711a32b84741d98403f22502e9c3287a8e410999595ccaf6697611574e14d3bd6fbdce13b7c3b5b08b042eba5f89612259f7a66b28a4cd28

Download Submit
memory/1300-21-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-41-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-28-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-27-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-26-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-25-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-24-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/1300-23-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-31-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3704-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3704-42-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-39-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-38-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-35-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-36-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-34-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/3704-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4592-4-0x0000000074912000-0x0000000074913000-memory.dmp

Filesize
4KB

Download
memory/4592-0-0x0000000074912000-0x0000000074913000-memory.dmp

Filesize
4KB

Download
memory/4592-2-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-3-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-7-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-5-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-6-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-1-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download
memory/4592-22-0x0000000074910000-0x0000000074EC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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