nanocore | cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398

General

Target

cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe
Size

255KB
MD5

d8a507033ff81ad56143528fae985f90
SHA1

ae3a2beeed87ae6781e9d1bacd4fb00b70193038
SHA256

cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398
SHA512

69cd754e185e719f1a90b1b8244c96edcf9e685e50709b86e0a4e4bdbd1a25dae126c44b9b856d6b66281c6ae9c9a5d2df8716312725838e67f941b7bb796f4f
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ+s:EeGUA5YZazpXUmZhls

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe

Executes dropped EXE 2 IoCs

pid	Process
956	a1punf5t2of.exe
1344	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.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 956 set thread context of 1344	956	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	cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.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
1344	a1punf5t2of.exe
1344	a1punf5t2of.exe
1344	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1344	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1344	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 956	3440	cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe	92
PID 3440 wrote to memory of 956	3440	cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe	92
PID 3440 wrote to memory of 956	3440	cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe	92
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97
PID 956 wrote to memory of 1344	956	a1punf5t2of.exe	97

C:\Users\Admin\AppData\Local\Temp\cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe
"C:\Users\Admin\AppData\Local\Temp\cb33a5e49c9f447351d5bd8cf835dbefbe5f1778595c3e2423fc74c3a25f5398N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3440
- 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:956
- - 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:1344

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
8690c52422464bb3d46f47ebc929ce9f

SHA1
59bba3b6a62981916eb446e333736e15f3a6ef2c

SHA256
9ca1c2443604926384b58258d81a3edce80c4bdece44eea54c7281dd5350ae02

SHA512
3c6a8dea546aeb92d3e889d6cfdbe6501d1a8b970392ee0f327f059b409569354d440d85ff5978f0a0e67f15b33e58856ab79b8b095c9f255298972adfe65cb6

Download Submit
memory/956-38-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/956-26-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/956-25-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/956-24-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/956-23-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/956-22-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1344-32-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1344-35-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1344-39-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1344-36-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1344-33-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/1344-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1344-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1344-30-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3440-2-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3440-3-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3440-4-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/3440-0-0x0000000074932000-0x0000000074933000-memory.dmp

Filesize
4KB

Download
memory/3440-21-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3440-7-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3440-5-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3440-1-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download
memory/3440-6-0x0000000074930000-0x0000000074EE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads