nanocore | 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71

General

Target

61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe
Size

256KB
MD5

d2f0b2b434dbfaeb899f4a42d5981940
SHA1

d88c43669e78b78960be072b741fd1b2f99d5276
SHA256

61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71
SHA512

65966c95acf86043f5609fab77a1886851c0f5e5fe9e55fcb66efbb0955feb7d245e384a42694b2b4ffb99a6abf86eb2787bc0ecdb86cfcc4cc3d830313c731f
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4B:EeGUA5YZazpXUmZhPB

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	61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe

Executes dropped EXE 2 IoCs

pid	Process
4416	a1punf5t2of.exe
2160	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"	61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.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 4416 set thread context of 2160	4416	a1punf5t2of.exe	90

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	61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.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
2160	a1punf5t2of.exe
2160	a1punf5t2of.exe
2160	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2160	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 4416	3680	61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe	89
PID 3680 wrote to memory of 4416	3680	61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe	89
PID 3680 wrote to memory of 4416	3680	61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe	89
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90
PID 4416 wrote to memory of 2160	4416	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe
"C:\Users\Admin\AppData\Local\Temp\61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3680
- 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:4416
- - 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:2160

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
256KB

MD5
7f09e8122e55092a36e638d578508661

SHA1
d68d22248a3ce300e39d2928b9bce0dfa81f7f81

SHA256
cdc4bfd68e177ec5b81682d72fa16a9c5a7bd1038bc311c96ca6d4f97825b3f4

SHA512
b349c67e6bf891e1f9d992fb8453e06927ee27135a3e16084d6f7df963f28d625cee755ff547e1df2244f1aa0dc744c94123418293141f77fa26240291405b05

Download Submit
memory/2160-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2160-41-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/2160-38-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/2160-37-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/2160-35-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/2160-34-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/2160-33-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/2160-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2160-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3680-6-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/3680-0-0x0000000075202000-0x0000000075203000-memory.dmp

Filesize
4KB

Download
memory/3680-1-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/3680-2-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/3680-22-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/3680-3-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/3680-4-0x0000000075202000-0x0000000075203000-memory.dmp

Filesize
4KB

Download
memory/3680-5-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/3680-7-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-26-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-21-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-23-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-27-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-25-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-40-0x0000000075200000-0x00000000757B1000-memory.dmp

Filesize
5.7MB

Download
memory/4416-24-0x0000000075200000-0x00000000757B1000-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