nanocore | 4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73

General

Target

4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe
Size

257KB
MD5

4b190e8e8f6fa125c8e12119033266f0
SHA1

c4ae63b1e1e4e93eebd8ce308507a3c2c55bd651
SHA256

4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73
SHA512

e778233396f411f0585fee2f017bfd22247e9b9affd6625d5e0e9c531a6eb97d62435835ac8a22f53f67a52cdbc5773a62f1ae705dfa7c8fd1cbdc958d06fce1
SSDEEP

6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4i:EeGUA5YZazpXUmZhPi

Score

10^/10

nanocore defense_evasion discovery 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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe

Executes dropped EXE 2 IoCs

pid	Process
368	a1punf5t2of.exe
1708	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-1-5-21-4003209913-3868522715-854928974-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe"	4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_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 368 set thread context of 1708	368	a1punf5t2of.exe	89

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	4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1punf5t2of.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1708	a1punf5t2of.exe
1708	a1punf5t2of.exe
1708	a1punf5t2of.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1708	a1punf5t2of.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1708	a1punf5t2of.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 184 wrote to memory of 368	184	4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe	88
PID 184 wrote to memory of 368	184	4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe	88
PID 184 wrote to memory of 368	184	4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe	88
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89
PID 368 wrote to memory of 1708	368	a1punf5t2of.exe	89

C:\Users\Admin\AppData\Local\Temp\4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe
"C:\Users\Admin\AppData\Local\Temp\4627e45e75fd36129a6ccc762828cb9a1e614f7eba26694f390affecc9f22d73N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:184
- 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:368
- - 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:1708

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
257KB

MD5
ab8076618aa0fb5e669ea82fae9ed47e

SHA1
d4541182fb234352a2064e42cb12bdaf8caeb65c

SHA256
37f377288851f5e7749bca3e9b253b55abfa313ab1b20f6de2872da9b81a139d

SHA512
9f6fcb2f263c5b142a0c98d86b8d3e00b7c89b80da7aee614cf9a209ef5d5b82bf497a862671d95dd4adbe123c7620d01a6a819ad5670163045eed1863fa1a10

Download Submit
memory/184-22-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-3-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-2-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-4-0x00000000755E2000-0x00000000755E3000-memory.dmp

Filesize
4KB

Download
memory/184-5-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-6-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-7-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-1-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/184-0-0x00000000755E2000-0x00000000755E3000-memory.dmp

Filesize
4KB

Download
memory/368-25-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/368-23-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/368-24-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/368-21-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/368-37-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/1708-28-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1708-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1708-34-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/1708-31-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/1708-32-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/1708-35-0x00000000755E0000-0x0000000075B91000-memory.dmp

Filesize
5.7MB

Download
memory/1708-26-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1708-38-0x00000000755E0000-0x0000000075B91000-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