nanocore | 1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4deb

General

Target

1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe
Size

255KB
MD5

ce5d57795f9e9002e066a382da04df30
SHA1

acb520652e2b4fb179e99afb88fd23f02ecae586
SHA256

1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4deb
SHA512

febe06cf33308a28a5e93aa26fd8e90f1010f345b206acb2d7d0368ac1b788fc488bbda3f498e1464d458a982e0e12d5332bf1277ea57acf6b44a07c271ded02
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ9N:EeGUA5YZazpXUmZhmN

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe

Executes dropped EXE 2 IoCs

pid	Process
3852	a1punf5t2of.exe
1636	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.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 3852 set thread context of 1636	3852	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	1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.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
1636	a1punf5t2of.exe
1636	a1punf5t2of.exe
1636	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1636	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 3852	3756	1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe	82
PID 3756 wrote to memory of 3852	3756	1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe	82
PID 3756 wrote to memory of 3852	3756	1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe	82
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90
PID 3852 wrote to memory of 1636	3852	a1punf5t2of.exe	90

C:\Users\Admin\AppData\Local\Temp\1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe
"C:\Users\Admin\AppData\Local\Temp\1c1e2b6b038a48c330d5939d773fb35b80a2019414bedae3525b056921ec4debN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3756
- 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:3852
- - 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:1636

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
255KB

MD5
02a78db68c92ab04ceda5eb2248c1f4d

SHA1
c518215cd4b3d2a164f0411a9965f76ac088d07e

SHA256
da5e7457a4bb41cfc2b45c952933696e3d741585a1ac1f076de4b2d48e0b87b4

SHA512
e548cf7628c1082c066e573e8d05d51517a60e751ac2862d8f48dfb172a63e4f2c3f9f6340a5c45046ab98aa185edbc09c5218f75616f8bfaecb7b1084523d44

Download Submit
memory/1636-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1636-40-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/1636-37-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/1636-36-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/1636-33-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/1636-34-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/1636-32-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/1636-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1636-29-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3756-6-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-4-0x0000000074F62000-0x0000000074F63000-memory.dmp

Filesize
4KB

Download
memory/3756-1-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-2-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-3-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-23-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-5-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-7-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3756-0-0x0000000074F62000-0x0000000074F63000-memory.dmp

Filesize
4KB

Download
memory/3852-21-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3852-22-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3852-26-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3852-25-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3852-39-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3852-24-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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